./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/lockfree-3.3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/lockfree-3.3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya --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 1db117ae3c729419255b5da4a7f4ecd64b2d99a167d11f22266a773c4ff13cdb --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:28:57,565 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:28:57,637 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-29 00:28:57,642 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:28:57,642 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:28:57,667 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:28:57,667 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:28:57,668 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:28:57,669 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:28:57,669 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:28:57,670 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:28:57,670 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:28:57,671 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:28:57,671 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:28:57,672 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:28:57,673 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:28:57,673 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:28:57,674 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:28:57,674 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:28:57,675 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:28:57,675 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 00:28:57,676 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 00:28:57,676 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 00:28:57,677 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:28:57,677 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 00:28:57,678 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 00:28:57,678 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:28:57,678 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:28:57,679 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:28:57,679 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:28:57,680 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:28:57,680 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:28:57,680 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:28:57,681 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:28:57,681 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:28:57,681 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:28:57,681 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:28:57,682 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:28:57,682 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:28:57,682 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:28:57,682 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:28:57,683 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_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1db117ae3c729419255b5da4a7f4ecd64b2d99a167d11f22266a773c4ff13cdb [2023-11-29 00:28:57,899 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:28:57,919 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:28:57,922 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:28:57,923 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:28:57,924 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:28:57,925 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/memsafety/lockfree-3.3.i [2023-11-29 00:29:00,680 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:29:00,910 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:29:00,911 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/sv-benchmarks/c/memsafety/lockfree-3.3.i [2023-11-29 00:29:00,926 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/data/a738ebf91/dd526c50766c4272943a03f41368735d/FLAG281b8a4c2 [2023-11-29 00:29:00,940 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/data/a738ebf91/dd526c50766c4272943a03f41368735d [2023-11-29 00:29:00,942 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:29:00,944 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:29:00,945 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:29:00,946 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:29:00,951 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:29:00,952 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:29:00" (1/1) ... [2023-11-29 00:29:00,953 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a1ab72e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:00, skipping insertion in model container [2023-11-29 00:29:00,953 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:29:00" (1/1) ... [2023-11-29 00:29:01,032 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:29:01,314 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:29:01,325 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:29:01,366 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:29:01,398 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:29:01,399 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:01 WrapperNode [2023-11-29 00:29:01,399 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:29:01,400 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:29:01,400 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:29:01,400 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:29:01,407 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:01" (1/1) ... [2023-11-29 00:29:01,421 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:01" (1/1) ... [2023-11-29 00:29:01,447 INFO L138 Inliner]: procedures = 125, calls = 18, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 127 [2023-11-29 00:29:01,447 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:29:01,448 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:29:01,448 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:29:01,448 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:29:01,460 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:01" (1/1) ... [2023-11-29 00:29:01,460 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:01" (1/1) ... [2023-11-29 00:29:01,464 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:01" (1/1) ... [2023-11-29 00:29:01,482 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 5 writes are split as follows [0, 5]. [2023-11-29 00:29:01,483 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:01" (1/1) ... [2023-11-29 00:29:01,483 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:01" (1/1) ... [2023-11-29 00:29:01,491 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:01" (1/1) ... [2023-11-29 00:29:01,495 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:01" (1/1) ... [2023-11-29 00:29:01,497 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:01" (1/1) ... [2023-11-29 00:29:01,498 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:01" (1/1) ... [2023-11-29 00:29:01,502 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:29:01,503 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:29:01,503 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:29:01,503 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:29:01,504 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:01" (1/1) ... [2023-11-29 00:29:01,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:29:01,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:29:01,533 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:29:01,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:29:01,575 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 00:29:01,575 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 00:29:01,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 00:29:01,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 00:29:01,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 00:29:01,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:29:01,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 00:29:01,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 00:29:01,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 00:29:01,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 00:29:01,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 00:29:01,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 00:29:01,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 00:29:01,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:29:01,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:29:01,702 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:29:01,705 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:29:01,965 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:29:02,010 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:29:02,010 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 00:29:02,011 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:29:02 BoogieIcfgContainer [2023-11-29 00:29:02,011 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:29:02,013 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:29:02,014 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:29:02,017 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:29:02,017 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:29:00" (1/3) ... [2023-11-29 00:29:02,018 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a55b8fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:29:02, skipping insertion in model container [2023-11-29 00:29:02,018 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:01" (2/3) ... [2023-11-29 00:29:02,019 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a55b8fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:29:02, skipping insertion in model container [2023-11-29 00:29:02,019 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:29:02" (3/3) ... [2023-11-29 00:29:02,020 INFO L112 eAbstractionObserver]: Analyzing ICFG lockfree-3.3.i [2023-11-29 00:29:02,039 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:29:02,039 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2023-11-29 00:29:02,076 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:29:02,081 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;@31ea4b5f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:29:02,081 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-11-29 00:29:02,085 INFO L276 IsEmpty]: Start isEmpty. Operand has 56 states, 35 states have (on average 2.142857142857143) internal successors, (75), 55 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:02,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-29 00:29:02,091 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:02,092 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-29 00:29:02,092 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:29:02,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:02,098 INFO L85 PathProgramCache]: Analyzing trace with hash 5969409, now seen corresponding path program 1 times [2023-11-29 00:29:02,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:02,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051980984] [2023-11-29 00:29:02,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:02,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:02,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:02,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:29:02,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:02,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051980984] [2023-11-29 00:29:02,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051980984] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:29:02,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:29:02,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:29:02,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495620679] [2023-11-29 00:29:02,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:29:02,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 00:29:02,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:02,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 00:29:02,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 00:29:02,271 INFO L87 Difference]: Start difference. First operand has 56 states, 35 states have (on average 2.142857142857143) internal successors, (75), 55 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2023-11-29 00:29:02,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:02,302 INFO L93 Difference]: Finished difference Result 56 states and 73 transitions. [2023-11-29 00:29:02,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 00:29:02,304 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2023-11-29 00:29:02,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:02,313 INFO L225 Difference]: With dead ends: 56 [2023-11-29 00:29:02,314 INFO L226 Difference]: Without dead ends: 55 [2023-11-29 00:29:02,315 INFO L412 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 [2023-11-29 00:29:02,319 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:02,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 65 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:29:02,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-11-29 00:29:02,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2023-11-29 00:29:02,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 35 states have (on average 2.057142857142857) internal successors, (72), 54 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:02,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 72 transitions. [2023-11-29 00:29:02,350 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 72 transitions. Word has length 4 [2023-11-29 00:29:02,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:02,350 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 72 transitions. [2023-11-29 00:29:02,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2023-11-29 00:29:02,351 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 72 transitions. [2023-11-29 00:29:02,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-29 00:29:02,351 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:02,352 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 00:29:02,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 00:29:02,352 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:29:02,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:02,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1323128715, now seen corresponding path program 1 times [2023-11-29 00:29:02,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:02,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463493429] [2023-11-29 00:29:02,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:02,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:02,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:02,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:29:02,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:02,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463493429] [2023-11-29 00:29:02,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463493429] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:29:02,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:29:02,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:29:02,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223707405] [2023-11-29 00:29:02,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:29:02,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:29:02,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:02,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:29:02,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:29:02,472 INFO L87 Difference]: Start difference. First operand 55 states and 72 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-11-29 00:29:02,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:02,560 INFO L93 Difference]: Finished difference Result 89 states and 115 transitions. [2023-11-29 00:29:02,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:29:02,561 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2023-11-29 00:29:02,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:02,562 INFO L225 Difference]: With dead ends: 89 [2023-11-29 00:29:02,563 INFO L226 Difference]: Without dead ends: 89 [2023-11-29 00:29:02,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:29:02,565 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 40 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:02,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 170 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:29:02,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-11-29 00:29:02,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 70. [2023-11-29 00:29:02,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 50 states have (on average 2.04) internal successors, (102), 69 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) [2023-11-29 00:29:02,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 102 transitions. [2023-11-29 00:29:02,577 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 102 transitions. Word has length 6 [2023-11-29 00:29:02,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:02,577 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 102 transitions. [2023-11-29 00:29:02,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-11-29 00:29:02,578 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 102 transitions. [2023-11-29 00:29:02,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-29 00:29:02,578 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:02,579 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 00:29:02,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 00:29:02,579 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:29:02,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:02,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1323188297, now seen corresponding path program 1 times [2023-11-29 00:29:02,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:02,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334332293] [2023-11-29 00:29:02,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:02,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:02,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:02,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:29:02,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:02,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334332293] [2023-11-29 00:29:02,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334332293] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:29:02,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:29:02,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:29:02,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056428185] [2023-11-29 00:29:02,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:29:02,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:29:02,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:02,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:29:02,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:29:02,652 INFO L87 Difference]: Start difference. First operand 70 states and 102 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2023-11-29 00:29:02,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:02,696 INFO L93 Difference]: Finished difference Result 127 states and 191 transitions. [2023-11-29 00:29:02,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:29:02,697 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2023-11-29 00:29:02,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:02,699 INFO L225 Difference]: With dead ends: 127 [2023-11-29 00:29:02,699 INFO L226 Difference]: Without dead ends: 127 [2023-11-29 00:29:02,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:29:02,701 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 57 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:02,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 116 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:29:02,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-11-29 00:29:02,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 109. [2023-11-29 00:29:02,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 89 states have (on average 2.0112359550561796) internal successors, (179), 108 states have internal predecessors, (179), 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) [2023-11-29 00:29:02,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 179 transitions. [2023-11-29 00:29:02,716 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 179 transitions. Word has length 6 [2023-11-29 00:29:02,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:02,717 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 179 transitions. [2023-11-29 00:29:02,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2023-11-29 00:29:02,717 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 179 transitions. [2023-11-29 00:29:02,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 00:29:02,717 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:02,718 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:02,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 00:29:02,718 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:29:02,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:02,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1930837147, now seen corresponding path program 1 times [2023-11-29 00:29:02,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:02,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732124468] [2023-11-29 00:29:02,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:02,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:02,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:02,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:29:02,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:02,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732124468] [2023-11-29 00:29:02,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732124468] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:29:02,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:29:02,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:29:02,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141059102] [2023-11-29 00:29:02,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:29:02,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:29:02,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:02,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:29:02,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:29:02,772 INFO L87 Difference]: Start difference. First operand 109 states and 179 transitions. Second operand has 3 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) [2023-11-29 00:29:02,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:02,839 INFO L93 Difference]: Finished difference Result 180 states and 290 transitions. [2023-11-29 00:29:02,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:29:02,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 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 [2023-11-29 00:29:02,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:02,842 INFO L225 Difference]: With dead ends: 180 [2023-11-29 00:29:02,842 INFO L226 Difference]: Without dead ends: 177 [2023-11-29 00:29:02,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:29:02,844 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 57 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:02,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 103 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:29:02,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2023-11-29 00:29:02,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 158. [2023-11-29 00:29:02,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 138 states have (on average 2.0) internal successors, (276), 157 states have internal predecessors, (276), 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) [2023-11-29 00:29:02,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 276 transitions. [2023-11-29 00:29:02,860 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 276 transitions. Word has length 7 [2023-11-29 00:29:02,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:02,861 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 276 transitions. [2023-11-29 00:29:02,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-11-29 00:29:02,861 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 276 transitions. [2023-11-29 00:29:02,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 00:29:02,862 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:02,862 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:02,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 00:29:02,863 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:29:02,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:02,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1930894162, now seen corresponding path program 1 times [2023-11-29 00:29:02,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:02,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165589461] [2023-11-29 00:29:02,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:02,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:02,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:02,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:29:02,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:02,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165589461] [2023-11-29 00:29:02,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165589461] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:29:02,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:29:02,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:29:02,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047517869] [2023-11-29 00:29:02,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:29:02,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:29:02,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:02,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:29:02,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:29:02,943 INFO L87 Difference]: Start difference. First operand 158 states and 276 transitions. Second operand has 3 states, 2 states have (on average 3.5) 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) [2023-11-29 00:29:03,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:03,015 INFO L93 Difference]: Finished difference Result 224 states and 374 transitions. [2023-11-29 00:29:03,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:29:03,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) 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 [2023-11-29 00:29:03,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:03,018 INFO L225 Difference]: With dead ends: 224 [2023-11-29 00:29:03,018 INFO L226 Difference]: Without dead ends: 224 [2023-11-29 00:29:03,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:29:03,020 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 61 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:03,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 141 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:29:03,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-11-29 00:29:03,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 204. [2023-11-29 00:29:03,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 186 states have (on average 1.9408602150537635) internal successors, (361), 203 states have internal predecessors, (361), 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) [2023-11-29 00:29:03,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 361 transitions. [2023-11-29 00:29:03,037 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 361 transitions. Word has length 7 [2023-11-29 00:29:03,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:03,037 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 361 transitions. [2023-11-29 00:29:03,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) 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) [2023-11-29 00:29:03,037 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 361 transitions. [2023-11-29 00:29:03,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 00:29:03,038 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:03,038 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:03,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 00:29:03,038 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:29:03,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:03,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1930894161, now seen corresponding path program 1 times [2023-11-29 00:29:03,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:03,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830916938] [2023-11-29 00:29:03,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:03,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:03,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:03,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:29:03,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:03,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830916938] [2023-11-29 00:29:03,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830916938] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:29:03,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:29:03,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:29:03,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129344960] [2023-11-29 00:29:03,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:29:03,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:29:03,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:03,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:29:03,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:29:03,138 INFO L87 Difference]: Start difference. First operand 204 states and 361 transitions. Second operand has 3 states, 2 states have (on average 3.5) 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) [2023-11-29 00:29:03,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:03,213 INFO L93 Difference]: Finished difference Result 219 states and 365 transitions. [2023-11-29 00:29:03,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:29:03,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) 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 [2023-11-29 00:29:03,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:03,215 INFO L225 Difference]: With dead ends: 219 [2023-11-29 00:29:03,215 INFO L226 Difference]: Without dead ends: 219 [2023-11-29 00:29:03,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:29:03,217 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 60 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:03,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 148 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:29:03,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2023-11-29 00:29:03,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 202. [2023-11-29 00:29:03,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 186 states have (on average 1.8978494623655915) internal successors, (353), 201 states have internal predecessors, (353), 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) [2023-11-29 00:29:03,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 353 transitions. [2023-11-29 00:29:03,232 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 353 transitions. Word has length 7 [2023-11-29 00:29:03,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:03,232 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 353 transitions. [2023-11-29 00:29:03,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) 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) [2023-11-29 00:29:03,233 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 353 transitions. [2023-11-29 00:29:03,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-29 00:29:03,233 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:03,233 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:03,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 00:29:03,234 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:29:03,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:03,235 INFO L85 PathProgramCache]: Analyzing trace with hash 271831126, now seen corresponding path program 1 times [2023-11-29 00:29:03,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:03,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71303909] [2023-11-29 00:29:03,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:03,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:03,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:03,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:29:03,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:03,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71303909] [2023-11-29 00:29:03,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71303909] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:29:03,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:29:03,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:29:03,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139747786] [2023-11-29 00:29:03,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:29:03,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:29:03,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:03,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:29:03,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:29:03,286 INFO L87 Difference]: Start difference. First operand 202 states and 353 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-11-29 00:29:03,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:03,340 INFO L93 Difference]: Finished difference Result 186 states and 296 transitions. [2023-11-29 00:29:03,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:29:03,341 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2023-11-29 00:29:03,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:03,342 INFO L225 Difference]: With dead ends: 186 [2023-11-29 00:29:03,343 INFO L226 Difference]: Without dead ends: 186 [2023-11-29 00:29:03,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:29:03,344 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 48 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:03,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 154 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:29:03,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2023-11-29 00:29:03,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 162. [2023-11-29 00:29:03,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 150 states have (on average 1.8533333333333333) internal successors, (278), 161 states have internal predecessors, (278), 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) [2023-11-29 00:29:03,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 278 transitions. [2023-11-29 00:29:03,353 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 278 transitions. Word has length 8 [2023-11-29 00:29:03,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:03,353 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 278 transitions. [2023-11-29 00:29:03,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-11-29 00:29:03,354 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 278 transitions. [2023-11-29 00:29:03,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-29 00:29:03,354 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:03,354 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:03,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 00:29:03,355 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:29:03,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:03,355 INFO L85 PathProgramCache]: Analyzing trace with hash -111813905, now seen corresponding path program 1 times [2023-11-29 00:29:03,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:03,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051211137] [2023-11-29 00:29:03,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:03,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:03,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:03,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:29:03,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:03,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051211137] [2023-11-29 00:29:03,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051211137] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:29:03,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:29:03,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:29:03,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079008380] [2023-11-29 00:29:03,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:29:03,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:29:03,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:03,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:29:03,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:29:03,409 INFO L87 Difference]: Start difference. First operand 162 states and 278 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) [2023-11-29 00:29:03,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:03,450 INFO L93 Difference]: Finished difference Result 261 states and 411 transitions. [2023-11-29 00:29:03,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:29:03,450 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2023-11-29 00:29:03,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:03,452 INFO L225 Difference]: With dead ends: 261 [2023-11-29 00:29:03,452 INFO L226 Difference]: Without dead ends: 261 [2023-11-29 00:29:03,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:29:03,453 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 50 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:03,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 145 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:29:03,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2023-11-29 00:29:03,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 238. [2023-11-29 00:29:03,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 226 states have (on average 1.7168141592920354) internal successors, (388), 237 states have internal predecessors, (388), 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) [2023-11-29 00:29:03,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 388 transitions. [2023-11-29 00:29:03,463 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 388 transitions. Word has length 9 [2023-11-29 00:29:03,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:03,463 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 388 transitions. [2023-11-29 00:29:03,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) [2023-11-29 00:29:03,463 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 388 transitions. [2023-11-29 00:29:03,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-29 00:29:03,464 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:03,464 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:03,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 00:29:03,465 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:29:03,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:03,465 INFO L85 PathProgramCache]: Analyzing trace with hash -925635527, now seen corresponding path program 1 times [2023-11-29 00:29:03,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:03,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798627599] [2023-11-29 00:29:03,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:03,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:03,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:03,505 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:29:03,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:03,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798627599] [2023-11-29 00:29:03,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798627599] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:29:03,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:29:03,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:29:03,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513625496] [2023-11-29 00:29:03,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:29:03,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:29:03,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:03,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:29:03,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:29:03,507 INFO L87 Difference]: Start difference. First operand 238 states and 388 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2023-11-29 00:29:03,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:03,527 INFO L93 Difference]: Finished difference Result 250 states and 400 transitions. [2023-11-29 00:29:03,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:29:03,528 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 15 [2023-11-29 00:29:03,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:03,530 INFO L225 Difference]: With dead ends: 250 [2023-11-29 00:29:03,530 INFO L226 Difference]: Without dead ends: 250 [2023-11-29 00:29:03,530 INFO L412 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 [2023-11-29 00:29:03,531 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 0 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:03,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 109 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:29:03,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2023-11-29 00:29:03,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 248. [2023-11-29 00:29:03,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 236 states have (on average 1.6864406779661016) internal successors, (398), 247 states have internal predecessors, (398), 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) [2023-11-29 00:29:03,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 398 transitions. [2023-11-29 00:29:03,540 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 398 transitions. Word has length 15 [2023-11-29 00:29:03,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:03,540 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 398 transitions. [2023-11-29 00:29:03,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2023-11-29 00:29:03,541 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 398 transitions. [2023-11-29 00:29:03,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-29 00:29:03,541 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:03,542 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:03,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 00:29:03,542 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:29:03,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:03,542 INFO L85 PathProgramCache]: Analyzing trace with hash -923788485, now seen corresponding path program 1 times [2023-11-29 00:29:03,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:03,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576696379] [2023-11-29 00:29:03,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:03,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:03,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:03,641 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:29:03,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:03,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576696379] [2023-11-29 00:29:03,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576696379] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:29:03,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233283399] [2023-11-29 00:29:03,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:03,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:29:03,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:29:03,643 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:29:03,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 00:29:03,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:03,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 00:29:03,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:29:03,807 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:29:03,807 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:29:03,842 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:29:03,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233283399] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:29:03,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:29:03,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2023-11-29 00:29:03,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042222002] [2023-11-29 00:29:03,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:29:03,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:29:03,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:03,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:29:03,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:29:03,845 INFO L87 Difference]: Start difference. First operand 248 states and 398 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 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) [2023-11-29 00:29:03,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:03,916 INFO L93 Difference]: Finished difference Result 252 states and 388 transitions. [2023-11-29 00:29:03,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:29:03,917 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 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 15 [2023-11-29 00:29:03,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:03,918 INFO L225 Difference]: With dead ends: 252 [2023-11-29 00:29:03,918 INFO L226 Difference]: Without dead ends: 252 [2023-11-29 00:29:03,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:29:03,919 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 163 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:03,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 263 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:29:03,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2023-11-29 00:29:03,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 244. [2023-11-29 00:29:03,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 232 states have (on average 1.6637931034482758) internal successors, (386), 243 states have internal predecessors, (386), 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) [2023-11-29 00:29:03,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 386 transitions. [2023-11-29 00:29:03,927 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 386 transitions. Word has length 15 [2023-11-29 00:29:03,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:03,927 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 386 transitions. [2023-11-29 00:29:03,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 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) [2023-11-29 00:29:03,928 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 386 transitions. [2023-11-29 00:29:03,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-29 00:29:03,929 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:03,929 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:03,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 00:29:04,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 00:29:04,131 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:29:04,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:04,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1446576255, now seen corresponding path program 1 times [2023-11-29 00:29:04,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:04,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890362912] [2023-11-29 00:29:04,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:04,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:04,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:04,209 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:29:04,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:04,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890362912] [2023-11-29 00:29:04,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890362912] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:29:04,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859632554] [2023-11-29 00:29:04,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:04,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:29:04,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:29:04,211 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:29:04,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 00:29:04,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:04,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 00:29:04,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:29:04,328 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:29:04,329 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:29:04,372 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:29:04,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859632554] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:29:04,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:29:04,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2023-11-29 00:29:04,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717777475] [2023-11-29 00:29:04,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:29:04,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:29:04,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:04,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:29:04,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:29:04,373 INFO L87 Difference]: Start difference. First operand 244 states and 386 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 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) [2023-11-29 00:29:04,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:04,471 INFO L93 Difference]: Finished difference Result 409 states and 605 transitions. [2023-11-29 00:29:04,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:29:04,471 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 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 15 [2023-11-29 00:29:04,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:04,474 INFO L225 Difference]: With dead ends: 409 [2023-11-29 00:29:04,474 INFO L226 Difference]: Without dead ends: 409 [2023-11-29 00:29:04,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:29:04,475 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 80 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:04,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 339 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:29:04,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2023-11-29 00:29:04,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 355. [2023-11-29 00:29:04,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 343 states have (on average 1.5830903790087463) internal successors, (543), 354 states have internal predecessors, (543), 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) [2023-11-29 00:29:04,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 543 transitions. [2023-11-29 00:29:04,484 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 543 transitions. Word has length 15 [2023-11-29 00:29:04,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:04,484 INFO L495 AbstractCegarLoop]: Abstraction has 355 states and 543 transitions. [2023-11-29 00:29:04,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 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) [2023-11-29 00:29:04,485 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 543 transitions. [2023-11-29 00:29:04,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-29 00:29:04,486 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:04,486 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2023-11-29 00:29:04,491 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 00:29:04,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 00:29:04,691 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:29:04,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:04,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1156430351, now seen corresponding path program 2 times [2023-11-29 00:29:04,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:04,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937748315] [2023-11-29 00:29:04,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:04,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:04,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:04,764 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 00:29:04,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:04,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937748315] [2023-11-29 00:29:04,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937748315] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:29:04,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278006151] [2023-11-29 00:29:04,765 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:29:04,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:29:04,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:29:04,766 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:29:04,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 00:29:04,845 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:29:04,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:29:04,846 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:29:04,848 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:29:04,886 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:29:04,887 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:29:04,940 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:29:04,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278006151] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:29:04,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:29:04,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 8 [2023-11-29 00:29:04,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105838765] [2023-11-29 00:29:04,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:29:04,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:29:04,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:04,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:29:04,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:29:04,942 INFO L87 Difference]: Start difference. First operand 355 states and 543 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 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) [2023-11-29 00:29:05,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:05,070 INFO L93 Difference]: Finished difference Result 409 states and 589 transitions. [2023-11-29 00:29:05,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 00:29:05,071 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 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 21 [2023-11-29 00:29:05,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:05,074 INFO L225 Difference]: With dead ends: 409 [2023-11-29 00:29:05,074 INFO L226 Difference]: Without dead ends: 409 [2023-11-29 00:29:05,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2023-11-29 00:29:05,075 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 271 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:05,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 328 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:29:05,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2023-11-29 00:29:05,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 355. [2023-11-29 00:29:05,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 343 states have (on average 1.5364431486880465) internal successors, (527), 354 states have internal predecessors, (527), 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) [2023-11-29 00:29:05,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 527 transitions. [2023-11-29 00:29:05,086 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 527 transitions. Word has length 21 [2023-11-29 00:29:05,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:05,086 INFO L495 AbstractCegarLoop]: Abstraction has 355 states and 527 transitions. [2023-11-29 00:29:05,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 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) [2023-11-29 00:29:05,087 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 527 transitions. [2023-11-29 00:29:05,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-29 00:29:05,087 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:05,088 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:05,093 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 00:29:05,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:29:05,294 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:29:05,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:05,294 INFO L85 PathProgramCache]: Analyzing trace with hash 936153864, now seen corresponding path program 1 times [2023-11-29 00:29:05,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:05,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247673456] [2023-11-29 00:29:05,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:05,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:05,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:05,373 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:29:05,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:05,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247673456] [2023-11-29 00:29:05,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247673456] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:29:05,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291441695] [2023-11-29 00:29:05,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:05,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:29:05,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:29:05,375 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:29:05,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 00:29:05,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:05,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 00:29:05,453 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:29:05,512 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:29:05,512 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:29:05,570 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:29:05,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291441695] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:29:05,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:29:05,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2023-11-29 00:29:05,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067407510] [2023-11-29 00:29:05,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:29:05,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:29:05,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:05,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:29:05,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:29:05,572 INFO L87 Difference]: Start difference. First operand 355 states and 527 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 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) [2023-11-29 00:29:05,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:05,656 INFO L93 Difference]: Finished difference Result 851 states and 1245 transitions. [2023-11-29 00:29:05,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:29:05,657 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 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 23 [2023-11-29 00:29:05,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:05,662 INFO L225 Difference]: With dead ends: 851 [2023-11-29 00:29:05,662 INFO L226 Difference]: Without dead ends: 851 [2023-11-29 00:29:05,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:29:05,663 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 157 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:05,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 135 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:29:05,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2023-11-29 00:29:05,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 740. [2023-11-29 00:29:05,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 728 states have (on average 1.5178571428571428) internal successors, (1105), 739 states have internal predecessors, (1105), 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) [2023-11-29 00:29:05,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 1105 transitions. [2023-11-29 00:29:05,685 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 1105 transitions. Word has length 23 [2023-11-29 00:29:05,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:05,686 INFO L495 AbstractCegarLoop]: Abstraction has 740 states and 1105 transitions. [2023-11-29 00:29:05,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 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) [2023-11-29 00:29:05,686 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 1105 transitions. [2023-11-29 00:29:05,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-29 00:29:05,687 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:05,687 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:05,692 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 00:29:05,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 00:29:05,891 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:29:05,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:05,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1391650477, now seen corresponding path program 1 times [2023-11-29 00:29:05,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:05,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360945625] [2023-11-29 00:29:05,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:05,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:05,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:05,990 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:29:05,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:05,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360945625] [2023-11-29 00:29:05,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360945625] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:29:05,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656615471] [2023-11-29 00:29:05,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:05,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:29:05,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:29:05,992 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:29:05,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 00:29:06,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:06,086 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 00:29:06,088 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:29:06,108 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:29:06,108 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:29:06,127 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:29:06,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656615471] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:29:06,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:29:06,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2023-11-29 00:29:06,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046249169] [2023-11-29 00:29:06,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:29:06,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:29:06,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:06,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:29:06,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:29:06,130 INFO L87 Difference]: Start difference. First operand 740 states and 1105 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 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) [2023-11-29 00:29:06,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:06,207 INFO L93 Difference]: Finished difference Result 364 states and 503 transitions. [2023-11-29 00:29:06,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:29:06,208 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 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 25 [2023-11-29 00:29:06,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:06,210 INFO L225 Difference]: With dead ends: 364 [2023-11-29 00:29:06,210 INFO L226 Difference]: Without dead ends: 364 [2023-11-29 00:29:06,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:29:06,211 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 93 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:06,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 351 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:29:06,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2023-11-29 00:29:06,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 320. [2023-11-29 00:29:06,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 308 states have (on average 1.4772727272727273) internal successors, (455), 319 states have internal predecessors, (455), 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) [2023-11-29 00:29:06,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 455 transitions. [2023-11-29 00:29:06,226 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 455 transitions. Word has length 25 [2023-11-29 00:29:06,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:06,227 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 455 transitions. [2023-11-29 00:29:06,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 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) [2023-11-29 00:29:06,227 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 455 transitions. [2023-11-29 00:29:06,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-29 00:29:06,228 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:06,228 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:06,234 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 00:29:06,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 00:29:06,429 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:29:06,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:06,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1970646423, now seen corresponding path program 1 times [2023-11-29 00:29:06,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:06,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795879871] [2023-11-29 00:29:06,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:06,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:06,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:06,504 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:29:06,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:06,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795879871] [2023-11-29 00:29:06,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795879871] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:29:06,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11173602] [2023-11-29 00:29:06,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:06,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:29:06,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:29:06,506 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:29:06,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 00:29:06,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:06,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 00:29:06,589 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:29:06,624 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:29:06,624 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:29:06,676 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:29:06,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11173602] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:29:06,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:29:06,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-11-29 00:29:06,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842036277] [2023-11-29 00:29:06,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:29:06,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 00:29:06,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:06,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 00:29:06,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:29:06,678 INFO L87 Difference]: Start difference. First operand 320 states and 455 transitions. Second operand has 10 states, 10 states have (on average 4.9) internal successors, (49), 9 states have internal predecessors, (49), 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) [2023-11-29 00:29:06,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:06,879 INFO L93 Difference]: Finished difference Result 929 states and 1253 transitions. [2023-11-29 00:29:06,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 00:29:06,879 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 9 states have internal predecessors, (49), 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 26 [2023-11-29 00:29:06,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:06,884 INFO L225 Difference]: With dead ends: 929 [2023-11-29 00:29:06,884 INFO L226 Difference]: Without dead ends: 929 [2023-11-29 00:29:06,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-11-29 00:29:06,885 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 250 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:06,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 398 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:29:06,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2023-11-29 00:29:06,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 824. [2023-11-29 00:29:06,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 812 states have (on average 1.4322660098522169) internal successors, (1163), 823 states have internal predecessors, (1163), 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) [2023-11-29 00:29:06,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 1163 transitions. [2023-11-29 00:29:06,901 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 1163 transitions. Word has length 26 [2023-11-29 00:29:06,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:06,902 INFO L495 AbstractCegarLoop]: Abstraction has 824 states and 1163 transitions. [2023-11-29 00:29:06,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 9 states have internal predecessors, (49), 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) [2023-11-29 00:29:06,902 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 1163 transitions. [2023-11-29 00:29:06,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-29 00:29:06,904 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:06,904 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:06,909 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 00:29:07,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 00:29:07,105 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:29:07,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:07,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1812095213, now seen corresponding path program 1 times [2023-11-29 00:29:07,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:07,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327903348] [2023-11-29 00:29:07,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:07,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:07,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:07,256 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-29 00:29:07,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:07,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327903348] [2023-11-29 00:29:07,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327903348] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:29:07,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709801213] [2023-11-29 00:29:07,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:07,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:29:07,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:29:07,258 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:29:07,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 00:29:07,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:07,366 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 00:29:07,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:29:07,464 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 19 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:29:07,464 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:29:07,561 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 19 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:29:07,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709801213] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:29:07,561 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:29:07,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 13 [2023-11-29 00:29:07,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483207616] [2023-11-29 00:29:07,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:29:07,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 00:29:07,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:07,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 00:29:07,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-11-29 00:29:07,563 INFO L87 Difference]: Start difference. First operand 824 states and 1163 transitions. Second operand has 13 states, 13 states have (on average 6.0) internal successors, (78), 13 states have internal predecessors, (78), 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) [2023-11-29 00:29:07,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:07,898 INFO L93 Difference]: Finished difference Result 1559 states and 2119 transitions. [2023-11-29 00:29:07,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 00:29:07,899 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.0) internal successors, (78), 13 states have internal predecessors, (78), 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 50 [2023-11-29 00:29:07,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:07,905 INFO L225 Difference]: With dead ends: 1559 [2023-11-29 00:29:07,905 INFO L226 Difference]: Without dead ends: 1559 [2023-11-29 00:29:07,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 90 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=242, Invalid=570, Unknown=0, NotChecked=0, Total=812 [2023-11-29 00:29:07,906 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 304 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:07,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 656 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:29:07,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1559 states. [2023-11-29 00:29:07,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1559 to 908. [2023-11-29 00:29:07,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 908 states, 896 states have (on average 1.4542410714285714) internal successors, (1303), 907 states have internal predecessors, (1303), 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) [2023-11-29 00:29:07,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1303 transitions. [2023-11-29 00:29:07,927 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1303 transitions. Word has length 50 [2023-11-29 00:29:07,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:07,927 INFO L495 AbstractCegarLoop]: Abstraction has 908 states and 1303 transitions. [2023-11-29 00:29:07,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.0) internal successors, (78), 13 states have internal predecessors, (78), 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) [2023-11-29 00:29:07,928 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1303 transitions. [2023-11-29 00:29:07,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-29 00:29:07,929 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:07,929 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:07,934 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 00:29:08,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 00:29:08,130 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:29:08,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:08,130 INFO L85 PathProgramCache]: Analyzing trace with hash 447476165, now seen corresponding path program 1 times [2023-11-29 00:29:08,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:08,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953426708] [2023-11-29 00:29:08,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:08,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:08,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:08,303 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 65 proven. 3 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-29 00:29:08,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:08,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953426708] [2023-11-29 00:29:08,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953426708] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:29:08,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196150786] [2023-11-29 00:29:08,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:08,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:29:08,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:29:08,306 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:29:08,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 00:29:08,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:08,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 00:29:08,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:29:08,501 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 92 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 00:29:08,501 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:29:08,564 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-29 00:29:08,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196150786] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 00:29:08,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:29:08,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 13 [2023-11-29 00:29:08,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505715394] [2023-11-29 00:29:08,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:29:08,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:29:08,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:08,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:29:08,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 00:29:08,567 INFO L87 Difference]: Start difference. First operand 908 states and 1303 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 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) [2023-11-29 00:29:08,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:08,684 INFO L93 Difference]: Finished difference Result 1574 states and 2196 transitions. [2023-11-29 00:29:08,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:29:08,685 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 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 58 [2023-11-29 00:29:08,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:08,693 INFO L225 Difference]: With dead ends: 1574 [2023-11-29 00:29:08,693 INFO L226 Difference]: Without dead ends: 1574 [2023-11-29 00:29:08,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-11-29 00:29:08,694 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 124 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:08,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 200 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:29:08,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1574 states. [2023-11-29 00:29:08,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1574 to 1505. [2023-11-29 00:29:08,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1505 states, 1493 states have (on average 1.4286671131949096) internal successors, (2133), 1504 states have internal predecessors, (2133), 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) [2023-11-29 00:29:08,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1505 states to 1505 states and 2133 transitions. [2023-11-29 00:29:08,730 INFO L78 Accepts]: Start accepts. Automaton has 1505 states and 2133 transitions. Word has length 58 [2023-11-29 00:29:08,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:08,731 INFO L495 AbstractCegarLoop]: Abstraction has 1505 states and 2133 transitions. [2023-11-29 00:29:08,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 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) [2023-11-29 00:29:08,731 INFO L276 IsEmpty]: Start isEmpty. Operand 1505 states and 2133 transitions. [2023-11-29 00:29:08,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-29 00:29:08,732 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:08,732 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:08,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-29 00:29:08,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 00:29:08,938 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:29:08,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:08,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1422576838, now seen corresponding path program 1 times [2023-11-29 00:29:08,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:08,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104802690] [2023-11-29 00:29:08,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:08,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:08,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:09,050 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 27 proven. 49 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-29 00:29:09,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:09,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104802690] [2023-11-29 00:29:09,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104802690] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:29:09,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591100765] [2023-11-29 00:29:09,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:09,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:29:09,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:29:09,051 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:29:09,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 00:29:09,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:09,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 00:29:09,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:29:09,234 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 71 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-29 00:29:09,234 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:29:09,290 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 71 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-29 00:29:09,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591100765] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:29:09,290 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:29:09,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 12 [2023-11-29 00:29:09,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340895223] [2023-11-29 00:29:09,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:29:09,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:29:09,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:09,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:29:09,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:29:09,292 INFO L87 Difference]: Start difference. First operand 1505 states and 2133 transitions. Second operand has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 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) [2023-11-29 00:29:10,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:10,407 INFO L93 Difference]: Finished difference Result 6272 states and 8727 transitions. [2023-11-29 00:29:10,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-11-29 00:29:10,407 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 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 58 [2023-11-29 00:29:10,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:10,440 INFO L225 Difference]: With dead ends: 6272 [2023-11-29 00:29:10,440 INFO L226 Difference]: Without dead ends: 6272 [2023-11-29 00:29:10,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=562, Invalid=1694, Unknown=0, NotChecked=0, Total=2256 [2023-11-29 00:29:10,442 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 395 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:10,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 616 Invalid, 900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 875 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 00:29:10,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6272 states. [2023-11-29 00:29:10,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6272 to 4282. [2023-11-29 00:29:10,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4282 states, 4271 states have (on average 1.4528213533130414) internal successors, (6205), 4281 states have internal predecessors, (6205), 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) [2023-11-29 00:29:10,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4282 states to 4282 states and 6205 transitions. [2023-11-29 00:29:10,559 INFO L78 Accepts]: Start accepts. Automaton has 4282 states and 6205 transitions. Word has length 58 [2023-11-29 00:29:10,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:10,560 INFO L495 AbstractCegarLoop]: Abstraction has 4282 states and 6205 transitions. [2023-11-29 00:29:10,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 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) [2023-11-29 00:29:10,560 INFO L276 IsEmpty]: Start isEmpty. Operand 4282 states and 6205 transitions. [2023-11-29 00:29:10,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-29 00:29:10,562 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:10,562 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:10,568 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 00:29:10,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 00:29:10,763 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:29:10,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:10,763 INFO L85 PathProgramCache]: Analyzing trace with hash -175746809, now seen corresponding path program 1 times [2023-11-29 00:29:10,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:10,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466151623] [2023-11-29 00:29:10,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:10,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:10,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:11,002 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 72 proven. 14 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-29 00:29:11,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:11,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466151623] [2023-11-29 00:29:11,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466151623] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:29:11,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468079242] [2023-11-29 00:29:11,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:11,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:29:11,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:29:11,004 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:29:11,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 00:29:11,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:11,134 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 00:29:11,138 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:29:11,233 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 52 proven. 38 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-29 00:29:11,233 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:29:11,278 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 52 proven. 38 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-29 00:29:11,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468079242] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:29:11,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:29:11,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2023-11-29 00:29:11,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321242447] [2023-11-29 00:29:11,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:29:11,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 00:29:11,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:11,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 00:29:11,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-11-29 00:29:11,281 INFO L87 Difference]: Start difference. First operand 4282 states and 6205 transitions. Second operand has 14 states, 14 states have (on average 6.142857142857143) internal successors, (86), 14 states have internal predecessors, (86), 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) [2023-11-29 00:29:11,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:11,840 INFO L93 Difference]: Finished difference Result 5584 states and 7654 transitions. [2023-11-29 00:29:11,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-29 00:29:11,841 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.142857142857143) internal successors, (86), 14 states have internal predecessors, (86), 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 61 [2023-11-29 00:29:11,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:11,867 INFO L225 Difference]: With dead ends: 5584 [2023-11-29 00:29:11,867 INFO L226 Difference]: Without dead ends: 5584 [2023-11-29 00:29:11,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=280, Invalid=1052, Unknown=0, NotChecked=0, Total=1332 [2023-11-29 00:29:11,869 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 278 mSDsluCounter, 1026 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 1171 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:11,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 1171 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 00:29:11,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5584 states. [2023-11-29 00:29:11,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5584 to 4878. [2023-11-29 00:29:11,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4878 states, 4867 states have (on average 1.4072323813437435) internal successors, (6849), 4877 states have internal predecessors, (6849), 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) [2023-11-29 00:29:11,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4878 states to 4878 states and 6849 transitions. [2023-11-29 00:29:11,978 INFO L78 Accepts]: Start accepts. Automaton has 4878 states and 6849 transitions. Word has length 61 [2023-11-29 00:29:11,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:11,978 INFO L495 AbstractCegarLoop]: Abstraction has 4878 states and 6849 transitions. [2023-11-29 00:29:11,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.142857142857143) internal successors, (86), 14 states have internal predecessors, (86), 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) [2023-11-29 00:29:11,979 INFO L276 IsEmpty]: Start isEmpty. Operand 4878 states and 6849 transitions. [2023-11-29 00:29:11,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-29 00:29:11,980 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:11,981 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:11,988 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 00:29:12,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:29:12,181 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:29:12,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:12,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1446605301, now seen corresponding path program 1 times [2023-11-29 00:29:12,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:12,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895642441] [2023-11-29 00:29:12,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:12,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:12,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:12,339 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 68 proven. 4 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-29 00:29:12,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:12,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895642441] [2023-11-29 00:29:12,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895642441] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:29:12,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167652804] [2023-11-29 00:29:12,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:12,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:29:12,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:29:12,342 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:29:12,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 00:29:12,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:12,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 00:29:12,477 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:29:12,549 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 101 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 00:29:12,550 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:29:12,629 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 103 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 00:29:12,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167652804] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:29:12,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:29:12,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 14 [2023-11-29 00:29:12,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267700665] [2023-11-29 00:29:12,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:29:12,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 00:29:12,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:12,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 00:29:12,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-11-29 00:29:12,632 INFO L87 Difference]: Start difference. First operand 4878 states and 6849 transitions. Second operand has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 14 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) [2023-11-29 00:29:13,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:13,081 INFO L93 Difference]: Finished difference Result 3975 states and 5287 transitions. [2023-11-29 00:29:13,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 00:29:13,082 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 14 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 62 [2023-11-29 00:29:13,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:13,098 INFO L225 Difference]: With dead ends: 3975 [2023-11-29 00:29:13,099 INFO L226 Difference]: Without dead ends: 3975 [2023-11-29 00:29:13,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=313, Invalid=947, Unknown=0, NotChecked=0, Total=1260 [2023-11-29 00:29:13,099 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 395 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:13,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 734 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:29:13,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3975 states. [2023-11-29 00:29:13,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3975 to 2670. [2023-11-29 00:29:13,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2670 states, 2659 states have (on average 1.3358405415569763) internal successors, (3552), 2669 states have internal predecessors, (3552), 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) [2023-11-29 00:29:13,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2670 states to 2670 states and 3552 transitions. [2023-11-29 00:29:13,155 INFO L78 Accepts]: Start accepts. Automaton has 2670 states and 3552 transitions. Word has length 62 [2023-11-29 00:29:13,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:13,156 INFO L495 AbstractCegarLoop]: Abstraction has 2670 states and 3552 transitions. [2023-11-29 00:29:13,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 14 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) [2023-11-29 00:29:13,156 INFO L276 IsEmpty]: Start isEmpty. Operand 2670 states and 3552 transitions. [2023-11-29 00:29:13,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-29 00:29:13,157 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:13,157 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:13,163 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 00:29:13,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:29:13,358 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:29:13,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:13,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1221625822, now seen corresponding path program 1 times [2023-11-29 00:29:13,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:13,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865194797] [2023-11-29 00:29:13,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:13,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:13,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:13,526 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 89 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-29 00:29:13,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:13,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865194797] [2023-11-29 00:29:13,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865194797] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:29:13,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275223821] [2023-11-29 00:29:13,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:13,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:29:13,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:29:13,528 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:29:13,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 00:29:13,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:13,647 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 00:29:13,649 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:29:13,710 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 95 proven. 15 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-29 00:29:13,710 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:29:13,772 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 97 proven. 13 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-29 00:29:13,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275223821] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:29:13,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:29:13,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 11 [2023-11-29 00:29:13,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30374381] [2023-11-29 00:29:13,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:29:13,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 00:29:13,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:13,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 00:29:13,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:29:13,774 INFO L87 Difference]: Start difference. First operand 2670 states and 3552 transitions. Second operand has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 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) [2023-11-29 00:29:13,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:13,976 INFO L93 Difference]: Finished difference Result 2715 states and 3552 transitions. [2023-11-29 00:29:13,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 00:29:13,977 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 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 63 [2023-11-29 00:29:13,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:13,989 INFO L225 Difference]: With dead ends: 2715 [2023-11-29 00:29:13,989 INFO L226 Difference]: Without dead ends: 2715 [2023-11-29 00:29:13,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2023-11-29 00:29:13,990 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 127 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:13,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 552 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:29:13,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2715 states. [2023-11-29 00:29:14,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2715 to 1986. [2023-11-29 00:29:14,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1986 states, 1975 states have (on average 1.3367088607594937) internal successors, (2640), 1985 states have internal predecessors, (2640), 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) [2023-11-29 00:29:14,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1986 states to 1986 states and 2640 transitions. [2023-11-29 00:29:14,025 INFO L78 Accepts]: Start accepts. Automaton has 1986 states and 2640 transitions. Word has length 63 [2023-11-29 00:29:14,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:14,026 INFO L495 AbstractCegarLoop]: Abstraction has 1986 states and 2640 transitions. [2023-11-29 00:29:14,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 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) [2023-11-29 00:29:14,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1986 states and 2640 transitions. [2023-11-29 00:29:14,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-29 00:29:14,027 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:14,027 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:14,033 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 00:29:14,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:29:14,227 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:29:14,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:14,228 INFO L85 PathProgramCache]: Analyzing trace with hash 2122980990, now seen corresponding path program 1 times [2023-11-29 00:29:14,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:14,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169067585] [2023-11-29 00:29:14,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:14,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:14,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:14,353 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 33 proven. 47 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-29 00:29:14,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:14,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169067585] [2023-11-29 00:29:14,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169067585] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:29:14,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166848683] [2023-11-29 00:29:14,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:14,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:29:14,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:29:14,355 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:29:14,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 00:29:14,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:14,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 00:29:14,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:29:14,545 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 33 proven. 47 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-29 00:29:14,545 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:29:14,607 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 33 proven. 47 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-29 00:29:14,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166848683] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:29:14,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:29:14,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2023-11-29 00:29:14,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222786451] [2023-11-29 00:29:14,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:29:14,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:29:14,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:14,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:29:14,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:29:14,609 INFO L87 Difference]: Start difference. First operand 1986 states and 2640 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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) [2023-11-29 00:29:14,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:14,697 INFO L93 Difference]: Finished difference Result 1980 states and 2607 transitions. [2023-11-29 00:29:14,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:29:14,699 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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 63 [2023-11-29 00:29:14,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:14,704 INFO L225 Difference]: With dead ends: 1980 [2023-11-29 00:29:14,704 INFO L226 Difference]: Without dead ends: 1980 [2023-11-29 00:29:14,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:29:14,706 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 93 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:14,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 208 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:29:14,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1980 states. [2023-11-29 00:29:14,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1980 to 1975. [2023-11-29 00:29:14,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1975 states, 1964 states have (on average 1.3273930753564154) internal successors, (2607), 1974 states have internal predecessors, (2607), 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) [2023-11-29 00:29:14,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 2607 transitions. [2023-11-29 00:29:14,738 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 2607 transitions. Word has length 63 [2023-11-29 00:29:14,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:14,739 INFO L495 AbstractCegarLoop]: Abstraction has 1975 states and 2607 transitions. [2023-11-29 00:29:14,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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) [2023-11-29 00:29:14,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 2607 transitions. [2023-11-29 00:29:14,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-29 00:29:14,740 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:14,740 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 5, 5, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:14,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-29 00:29:14,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:29:14,942 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:29:14,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:14,942 INFO L85 PathProgramCache]: Analyzing trace with hash -974106542, now seen corresponding path program 1 times [2023-11-29 00:29:14,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:14,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444544115] [2023-11-29 00:29:14,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:14,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:14,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:15,112 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 32 proven. 62 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-11-29 00:29:15,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:15,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444544115] [2023-11-29 00:29:15,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444544115] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:29:15,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284209594] [2023-11-29 00:29:15,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:15,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:29:15,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:29:15,114 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:29:15,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 00:29:15,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:15,229 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 00:29:15,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:29:15,451 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 32 proven. 62 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-11-29 00:29:15,451 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:29:15,751 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2023-11-29 00:29:15,762 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 32 proven. 62 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-11-29 00:29:15,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284209594] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:29:15,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:29:15,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 12 [2023-11-29 00:29:15,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338406333] [2023-11-29 00:29:15,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:29:15,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 00:29:15,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:15,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 00:29:15,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-11-29 00:29:15,765 INFO L87 Difference]: Start difference. First operand 1975 states and 2607 transitions. Second operand has 13 states, 12 states have (on average 9.416666666666666) internal successors, (113), 13 states have internal predecessors, (113), 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) [2023-11-29 00:29:16,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:16,104 INFO L93 Difference]: Finished difference Result 3814 states and 4940 transitions. [2023-11-29 00:29:16,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 00:29:16,104 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 9.416666666666666) internal successors, (113), 13 states have internal predecessors, (113), 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 68 [2023-11-29 00:29:16,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:16,109 INFO L225 Difference]: With dead ends: 3814 [2023-11-29 00:29:16,109 INFO L226 Difference]: Without dead ends: 3814 [2023-11-29 00:29:16,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=126, Invalid=254, Unknown=0, NotChecked=0, Total=380 [2023-11-29 00:29:16,110 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 536 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:16,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [536 Valid, 466 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:29:16,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3814 states. [2023-11-29 00:29:16,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3814 to 2839. [2023-11-29 00:29:16,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2839 states, 2828 states have (on average 1.3440594059405941) internal successors, (3801), 2838 states have internal predecessors, (3801), 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) [2023-11-29 00:29:16,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2839 states to 2839 states and 3801 transitions. [2023-11-29 00:29:16,148 INFO L78 Accepts]: Start accepts. Automaton has 2839 states and 3801 transitions. Word has length 68 [2023-11-29 00:29:16,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:16,148 INFO L495 AbstractCegarLoop]: Abstraction has 2839 states and 3801 transitions. [2023-11-29 00:29:16,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 9.416666666666666) internal successors, (113), 13 states have internal predecessors, (113), 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) [2023-11-29 00:29:16,149 INFO L276 IsEmpty]: Start isEmpty. Operand 2839 states and 3801 transitions. [2023-11-29 00:29:16,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-29 00:29:16,150 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:16,150 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 8, 6, 6, 5, 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, 1, 1, 1, 1, 1] [2023-11-29 00:29:16,156 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 00:29:16,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-29 00:29:16,351 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:29:16,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:16,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1866491219, now seen corresponding path program 1 times [2023-11-29 00:29:16,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:16,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245984186] [2023-11-29 00:29:16,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:16,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:16,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:16,514 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 64 proven. 2 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2023-11-29 00:29:16,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:29:16,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245984186] [2023-11-29 00:29:16,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245984186] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:29:16,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544307397] [2023-11-29 00:29:16,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:16,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:29:16,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:29:16,516 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:29:16,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 00:29:16,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:16,657 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:29:16,658 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:29:16,801 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 29 proven. 65 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2023-11-29 00:29:16,801 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:29:16,895 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 29 proven. 65 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2023-11-29 00:29:16,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544307397] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:29:16,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:29:16,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 12 [2023-11-29 00:29:16,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927307543] [2023-11-29 00:29:16,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:29:16,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:29:16,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:29:16,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:29:16,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:29:16,898 INFO L87 Difference]: Start difference. First operand 2839 states and 3801 transitions. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 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) [2023-11-29 00:29:17,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:17,152 INFO L93 Difference]: Finished difference Result 4532 states and 5749 transitions. [2023-11-29 00:29:17,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 00:29:17,153 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 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 87 [2023-11-29 00:29:17,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:17,158 INFO L225 Difference]: With dead ends: 4532 [2023-11-29 00:29:17,158 INFO L226 Difference]: Without dead ends: 4532 [2023-11-29 00:29:17,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=191, Invalid=621, Unknown=0, NotChecked=0, Total=812 [2023-11-29 00:29:17,159 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 259 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:17,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 1026 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:29:17,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4532 states. [2023-11-29 00:29:17,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4532 to 4070. [2023-11-29 00:29:17,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4070 states, 4060 states have (on average 1.2810344827586206) internal successors, (5201), 4069 states have internal predecessors, (5201), 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) [2023-11-29 00:29:17,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4070 states to 4070 states and 5201 transitions. [2023-11-29 00:29:17,211 INFO L78 Accepts]: Start accepts. Automaton has 4070 states and 5201 transitions. Word has length 87 [2023-11-29 00:29:17,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:17,211 INFO L495 AbstractCegarLoop]: Abstraction has 4070 states and 5201 transitions. [2023-11-29 00:29:17,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 12 states have internal predecessors, (89), 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) [2023-11-29 00:29:17,211 INFO L276 IsEmpty]: Start isEmpty. Operand 4070 states and 5201 transitions. [2023-11-29 00:29:17,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-29 00:29:17,214 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:17,214 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 9, 6, 6, 5, 4, 4, 4, 3, 3, 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] [2023-11-29 00:29:17,218 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 00:29:17,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-29 00:29:17,414 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:29:17,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:17,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1764911483, now seen corresponding path program 1 times [2023-11-29 00:29:17,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:29:17,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765879632] [2023-11-29 00:29:17,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:17,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:29:17,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 00:29:17,445 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 00:29:17,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 00:29:17,498 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 00:29:17,498 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 00:29:17,499 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK (19 of 20 remaining) [2023-11-29 00:29:17,501 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 20 remaining) [2023-11-29 00:29:17,501 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 20 remaining) [2023-11-29 00:29:17,502 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 20 remaining) [2023-11-29 00:29:17,502 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 20 remaining) [2023-11-29 00:29:17,502 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 20 remaining) [2023-11-29 00:29:17,502 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 20 remaining) [2023-11-29 00:29:17,502 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 20 remaining) [2023-11-29 00:29:17,503 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 20 remaining) [2023-11-29 00:29:17,503 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 20 remaining) [2023-11-29 00:29:17,503 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 20 remaining) [2023-11-29 00:29:17,503 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 20 remaining) [2023-11-29 00:29:17,503 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 20 remaining) [2023-11-29 00:29:17,503 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 20 remaining) [2023-11-29 00:29:17,504 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 20 remaining) [2023-11-29 00:29:17,504 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 20 remaining) [2023-11-29 00:29:17,504 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 20 remaining) [2023-11-29 00:29:17,504 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE (2 of 20 remaining) [2023-11-29 00:29:17,504 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE (1 of 20 remaining) [2023-11-29 00:29:17,504 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE (0 of 20 remaining) [2023-11-29 00:29:17,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-29 00:29:17,507 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:17,511 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 00:29:17,555 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated [2023-11-29 00:29:17,555 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated [2023-11-29 00:29:17,556 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated [2023-11-29 00:29:17,556 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated [2023-11-29 00:29:17,557 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated [2023-11-29 00:29:17,557 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated [2023-11-29 00:29:17,557 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated [2023-11-29 00:29:17,558 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated [2023-11-29 00:29:17,558 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated [2023-11-29 00:29:17,559 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated [2023-11-29 00:29:17,559 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated [2023-11-29 00:29:17,559 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated [2023-11-29 00:29:17,560 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated [2023-11-29 00:29:17,560 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated [2023-11-29 00:29:17,560 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated [2023-11-29 00:29:17,560 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated [2023-11-29 00:29:17,561 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated [2023-11-29 00:29:17,561 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated [2023-11-29 00:29:17,561 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated [2023-11-29 00:29:17,562 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated [2023-11-29 00:29:17,562 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated [2023-11-29 00:29:17,562 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated [2023-11-29 00:29:17,563 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated [2023-11-29 00:29:17,563 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated [2023-11-29 00:29:17,564 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated [2023-11-29 00:29:17,564 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated [2023-11-29 00:29:17,564 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated [2023-11-29 00:29:17,565 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated [2023-11-29 00:29:17,565 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated [2023-11-29 00:29:17,565 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated [2023-11-29 00:29:17,565 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated [2023-11-29 00:29:17,566 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated [2023-11-29 00:29:17,566 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated [2023-11-29 00:29:17,566 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated [2023-11-29 00:29:17,566 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated [2023-11-29 00:29:17,567 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated [2023-11-29 00:29:17,567 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated [2023-11-29 00:29:17,567 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated [2023-11-29 00:29:17,568 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated [2023-11-29 00:29:17,568 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated [2023-11-29 00:29:17,568 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated [2023-11-29 00:29:17,568 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated [2023-11-29 00:29:17,569 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch7 could not be translated [2023-11-29 00:29:17,569 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated [2023-11-29 00:29:17,569 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated [2023-11-29 00:29:17,570 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated [2023-11-29 00:29:17,570 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch7 could not be translated [2023-11-29 00:29:17,570 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated [2023-11-29 00:29:17,570 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch7 could not be translated [2023-11-29 00:29:17,571 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated [2023-11-29 00:29:17,571 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated [2023-11-29 00:29:17,571 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch7 could not be translated [2023-11-29 00:29:17,572 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated [2023-11-29 00:29:17,572 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch7 could not be translated [2023-11-29 00:29:17,572 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated [2023-11-29 00:29:17,572 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated [2023-11-29 00:29:17,573 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated [2023-11-29 00:29:17,585 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 12:29:17 BoogieIcfgContainer [2023-11-29 00:29:17,585 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 00:29:17,586 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 00:29:17,586 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 00:29:17,586 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 00:29:17,586 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:29:02" (3/4) ... [2023-11-29 00:29:17,588 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-29 00:29:17,589 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 00:29:17,590 INFO L158 Benchmark]: Toolchain (without parser) took 16645.99ms. Allocated memory was 155.2MB in the beginning and 348.1MB in the end (delta: 192.9MB). Free memory was 113.2MB in the beginning and 206.8MB in the end (delta: -93.6MB). Peak memory consumption was 100.0MB. Max. memory is 16.1GB. [2023-11-29 00:29:17,590 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 155.2MB. Free memory is still 97.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 00:29:17,590 INFO L158 Benchmark]: CACSL2BoogieTranslator took 453.78ms. Allocated memory is still 155.2MB. Free memory was 112.8MB in the beginning and 95.4MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-29 00:29:17,591 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.81ms. Allocated memory is still 155.2MB. Free memory was 95.4MB in the beginning and 93.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 00:29:17,591 INFO L158 Benchmark]: Boogie Preprocessor took 53.88ms. Allocated memory is still 155.2MB. Free memory was 93.3MB in the beginning and 90.4MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 00:29:17,592 INFO L158 Benchmark]: RCFGBuilder took 508.41ms. Allocated memory was 155.2MB in the beginning and 241.2MB in the end (delta: 86.0MB). Free memory was 90.4MB in the beginning and 206.3MB in the end (delta: -115.9MB). Peak memory consumption was 24.9MB. Max. memory is 16.1GB. [2023-11-29 00:29:17,592 INFO L158 Benchmark]: TraceAbstraction took 15571.99ms. Allocated memory was 241.2MB in the beginning and 348.1MB in the end (delta: 107.0MB). Free memory was 205.3MB in the beginning and 207.8MB in the end (delta: -2.6MB). Peak memory consumption was 104.4MB. Max. memory is 16.1GB. [2023-11-29 00:29:17,592 INFO L158 Benchmark]: Witness Printer took 3.51ms. Allocated memory is still 348.1MB. Free memory was 207.8MB in the beginning and 206.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 00:29:17,594 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 155.2MB. Free memory is still 97.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 453.78ms. Allocated memory is still 155.2MB. Free memory was 112.8MB in the beginning and 95.4MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.81ms. Allocated memory is still 155.2MB. Free memory was 95.4MB in the beginning and 93.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.88ms. Allocated memory is still 155.2MB. Free memory was 93.3MB in the beginning and 90.4MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 508.41ms. Allocated memory was 155.2MB in the beginning and 241.2MB in the end (delta: 86.0MB). Free memory was 90.4MB in the beginning and 206.3MB in the end (delta: -115.9MB). Peak memory consumption was 24.9MB. Max. memory is 16.1GB. * TraceAbstraction took 15571.99ms. Allocated memory was 241.2MB in the beginning and 348.1MB in the end (delta: 107.0MB). Free memory was 205.3MB in the beginning and 207.8MB in the end (delta: -2.6MB). Peak memory consumption was 104.4MB. Max. memory is 16.1GB. * Witness Printer took 3.51ms. Allocated memory is still 348.1MB. Free memory was 207.8MB in the beginning and 206.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 592]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 592. Possible FailurePath: [L528] struct cell *S; [L529] int pc1 = 1; [L530] int pc4 = 1; [L531] static struct cell *t1 = ((void *)0); [L532] static struct cell *x1 = ((void *)0); [L561] struct cell* garbage; [L562] static struct cell *t4 = ((void *)0); [L563] static struct cell *x4 = ((void *)0); [L566] static int res4; [L594] S || 1 != pc1 || __VERIFIER_nondet_int() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [S={0:0}, garbage={0:0}, pc1=1, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() [L535] pc1++ [L536] case 1: VAL [S={0:0}, garbage={0:0}, pc1=2, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] [L536] case 1: [L537] x1 = malloc(sizeof(*x1)) [L538] x1->data = 0 VAL [S={0:0}, garbage={0:0}, pc1=2, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L539] x1->next = ((void *)0) VAL [S={0:0}, garbage={0:0}, pc1=2, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L596] RET push() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [S={0:0}, garbage={0:0}, pc1=2, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() [L535] pc1++ [L536] case 1: VAL [S={0:0}, garbage={0:0}, pc1=3, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L536] case 1: [L541] case 2: VAL [S={0:0}, garbage={0:0}, pc1=3, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L541] case 2: VAL [S={0:0}, garbage={0:0}, pc1=3, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L542] x1->data = 4 VAL [S={0:0}, garbage={0:0}, pc1=3, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L596] RET push() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [S={0:0}, garbage={0:0}, pc1=3, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() [L535] pc1++ [L536] case 1: VAL [S={0:0}, garbage={0:0}, pc1=4, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L536] case 1: [L541] case 2: VAL [S={0:0}, garbage={0:0}, pc1=4, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L541] case 2: [L544] case 3: [L545] t1 = S VAL [S={0:0}, garbage={0:0}, pc1=4, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L596] RET push() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [S={0:0}, garbage={0:0}, pc1=4, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() [L535] pc1++ [L536] case 1: VAL [S={0:0}, garbage={0:0}, pc1=5, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L536] case 1: [L541] case 2: VAL [S={0:0}, garbage={0:0}, pc1=5, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L541] case 2: [L544] case 3: [L547] case 4: VAL [S={0:0}, garbage={0:0}, pc1=5, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L547] case 4: VAL [S={0:0}, garbage={0:0}, pc1=5, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L548] x1->next = t1 VAL [S={0:0}, garbage={0:0}, pc1=5, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L596] RET push() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [S={0:0}, garbage={0:0}, pc1=5, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() [L535] pc1++ [L536] case 1: VAL [S={0:0}, garbage={0:0}, pc1=6, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L536] case 1: [L541] case 2: VAL [S={0:0}, garbage={0:0}, pc1=6, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L541] case 2: [L544] case 3: [L547] case 4: VAL [S={0:0}, garbage={0:0}, pc1=6, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L547] case 4: [L550] case 5: [L552] S = x1 VAL [S={-2:0}, garbage={0:0}, pc1=6, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L596] RET push() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [S={-2:0}, garbage={0:0}, pc1=6, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() [L535] pc1++ [L536] case 1: VAL [S={-2:0}, garbage={0:0}, pc1=7, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L536] case 1: [L541] case 2: VAL [S={-2:0}, garbage={0:0}, pc1=7, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L541] case 2: [L544] case 3: [L547] case 4: VAL [S={-2:0}, garbage={0:0}, pc1=7, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L547] case 4: [L550] case 5: [L556] case 6: [L557] pc1 = 1 VAL [S={-2:0}, garbage={0:0}, pc1=1, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L596] RET push() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [S={-2:0}, garbage={0:0}, pc1=1, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND FALSE !(__VERIFIER_nondet_int()) [L598] CALL pop() [L567] pc4++ [L568] case 1: [L569] t4 = S VAL [S={-2:0}, garbage={0:0}, pc1=1, pc4=2, res4=0, t1={0:0}, t4={-2:0}, x1={-2:0}, x4={0:0}] [L598] RET pop() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [S={-2:0}, garbage={0:0}, pc1=1, pc4=2, res4=0, t1={0:0}, t4={-2:0}, x1={-2:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND FALSE !(__VERIFIER_nondet_int()) [L598] CALL pop() [L567] pc4++ [L568] case 1: [L571] case 2: VAL [S={-2:0}, garbage={0:0}, pc1=1, pc4=3, res4=0, t1={0:0}, t4={-2:0}, x1={-2:0}, x4={0:0}] [L598] RET pop() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [S={-2:0}, garbage={0:0}, pc1=1, pc4=3, res4=0, t1={0:0}, t4={-2:0}, x1={-2:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND FALSE !(__VERIFIER_nondet_int()) [L598] CALL pop() [L567] pc4++ [L568] case 1: [L571] case 2: [L575] case 3: VAL [S={-2:0}, garbage={0:0}, pc1=1, pc4=4, res4=0, t1={0:0}, t4={-2:0}, x1={-2:0}, x4={0:0}] [L575] case 3: VAL [S={-2:0}, garbage={0:0}, pc1=1, pc4=4, res4=0, t1={0:0}, t4={-2:0}, x1={-2:0}, x4={0:0}] [L576] EXPR t4->next [L576] x4 = t4->next [L598] RET pop() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [S={-2:0}, garbage={0:0}, pc1=1, pc4=4, res4=0, t1={0:0}, t4={-2:0}, x1={-2:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND FALSE !(__VERIFIER_nondet_int()) [L598] CALL pop() [L567] pc4++ [L568] case 1: [L571] case 2: [L575] case 3: VAL [S={-2:0}, garbage={0:0}, pc1=1, pc4=5, res4=0, t1={0:0}, t4={-2:0}, x1={-2:0}, x4={0:0}] [L575] case 3: [L578] case 4: [L580] S = x4 VAL [S={0:0}, garbage={0:0}, pc1=1, pc4=5, res4=0, t1={0:0}, t4={-2:0}, x1={-2:0}, x4={0:0}] [L598] RET pop() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [S={0:0}, garbage={0:0}, pc1=1, pc4=5, res4=0, t1={0:0}, t4={-2:0}, x1={-2:0}, x4={0:0}] [L594] COND FALSE !(S || 1 != pc1 || __VERIFIER_nondet_int()) [L600] COND FALSE !(\read(*garbage)) VAL [S={0:0}, garbage={0:0}, pc1=1, pc4=5, res4=0, t1={0:0}, t4={-2:0}, x1={-2:0}, x4={0:0}] [L605] S = ((void *)0) [L606] t1 = ((void *)0) [L607] x1 = ((void *)0) [L608] t4 = ((void *)0) [L609] x4 = ((void *)0) [L610] return !!garbage; VAL [S={0:0}, \result=0, garbage={0:0}, pc1=1, pc4=5, res4=0, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 56 locations, 20 error locations. Started 1 CEGAR loops. OverallTime: 15.4s, OverallIterations: 25, TraceHistogramMax: 11, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3898 SdHoareTripleChecker+Valid, 2.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3898 mSDsluCounter, 8594 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6682 mSDsCounter, 304 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3436 IncrementalHoareTripleChecker+Invalid, 3740 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 304 mSolverCounterUnsat, 1912 mSDtfsCounter, 3436 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1685 GetRequests, 1376 SyntacticMatches, 14 SemanticMatches, 295 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1804 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4878occurred in iteration=19, InterpolantAutomatonStates: 270, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 24 MinimizatonAttempts, 7410 StatesRemovedByMinimization, 23 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 1555 NumberOfCodeBlocks, 1555 NumberOfCodeBlocksAsserted, 41 NumberOfCheckSat, 2100 ConstructedInterpolants, 0 QuantifiedInterpolants, 6358 SizeOfPredicates, 64 NumberOfNonLiveVariables, 3206 ConjunctsInSsa, 145 ConjunctsInUnsatCore, 54 InterpolantComputations, 10 PerfectInterpolantSequences, 2895/3756 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-29 00:29:17,614 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/lockfree-3.3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya --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 1db117ae3c729419255b5da4a7f4ecd64b2d99a167d11f22266a773c4ff13cdb --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:29:19,488 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:29:19,557 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-29 00:29:19,563 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:29:19,564 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:29:19,600 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:29:19,601 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:29:19,601 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:29:19,602 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:29:19,603 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:29:19,603 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:29:19,604 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:29:19,605 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:29:19,606 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:29:19,606 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:29:19,607 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:29:19,608 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:29:19,608 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:29:19,609 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:29:19,609 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:29:19,610 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 00:29:19,611 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 00:29:19,611 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 00:29:19,612 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:29:19,612 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 00:29:19,612 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 00:29:19,613 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 00:29:19,613 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 00:29:19,614 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:29:19,614 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:29:19,614 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:29:19,615 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:29:19,615 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:29:19,616 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:29:19,616 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:29:19,616 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:29:19,617 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:29:19,617 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 00:29:19,617 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 00:29:19,617 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:29:19,618 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:29:19,618 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:29:19,618 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:29:19,619 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 00:29:19,619 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_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1db117ae3c729419255b5da4a7f4ecd64b2d99a167d11f22266a773c4ff13cdb [2023-11-29 00:29:19,931 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:29:19,953 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:29:19,956 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:29:19,957 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:29:19,957 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:29:19,959 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/memsafety/lockfree-3.3.i [2023-11-29 00:29:22,815 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:29:23,057 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:29:23,072 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/sv-benchmarks/c/memsafety/lockfree-3.3.i [2023-11-29 00:29:23,087 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/data/708821052/86494ab4df764ec8884d29f6e506674a/FLAG3574f1978 [2023-11-29 00:29:23,103 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/data/708821052/86494ab4df764ec8884d29f6e506674a [2023-11-29 00:29:23,106 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:29:23,108 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:29:23,109 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:29:23,110 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:29:23,115 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:29:23,116 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:29:23" (1/1) ... [2023-11-29 00:29:23,117 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f23f554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:23, skipping insertion in model container [2023-11-29 00:29:23,118 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:29:23" (1/1) ... [2023-11-29 00:29:23,164 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:29:23,456 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:29:23,470 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:29:23,510 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:29:23,544 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:29:23,545 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:23 WrapperNode [2023-11-29 00:29:23,545 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:29:23,546 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:29:23,546 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:29:23,547 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:29:23,554 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:23" (1/1) ... [2023-11-29 00:29:23,571 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:23" (1/1) ... [2023-11-29 00:29:23,595 INFO L138 Inliner]: procedures = 128, calls = 18, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 126 [2023-11-29 00:29:23,596 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:29:23,597 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:29:23,597 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:29:23,597 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:29:23,609 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:23" (1/1) ... [2023-11-29 00:29:23,609 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:23" (1/1) ... [2023-11-29 00:29:23,614 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:23" (1/1) ... [2023-11-29 00:29:23,631 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 5 writes are split as follows [0, 5]. [2023-11-29 00:29:23,632 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:23" (1/1) ... [2023-11-29 00:29:23,632 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:23" (1/1) ... [2023-11-29 00:29:23,642 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:23" (1/1) ... [2023-11-29 00:29:23,645 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:23" (1/1) ... [2023-11-29 00:29:23,648 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:23" (1/1) ... [2023-11-29 00:29:23,650 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:23" (1/1) ... [2023-11-29 00:29:23,660 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:29:23,661 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:29:23,661 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:29:23,661 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:29:23,662 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:23" (1/1) ... [2023-11-29 00:29:23,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:29:23,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:29:23,697 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:29:23,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:29:23,734 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-29 00:29:23,734 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-29 00:29:23,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 00:29:23,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:29:23,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 00:29:23,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 00:29:23,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 00:29:23,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 00:29:23,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 00:29:23,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-29 00:29:23,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-29 00:29:23,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 00:29:23,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-29 00:29:23,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:29:23,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:29:23,867 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:29:23,869 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:29:24,195 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:29:24,230 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:29:24,230 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 00:29:24,231 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:29:24 BoogieIcfgContainer [2023-11-29 00:29:24,231 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:29:24,233 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:29:24,233 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:29:24,236 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:29:24,236 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:29:23" (1/3) ... [2023-11-29 00:29:24,237 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54efcd0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:29:24, skipping insertion in model container [2023-11-29 00:29:24,237 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:29:23" (2/3) ... [2023-11-29 00:29:24,238 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54efcd0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:29:24, skipping insertion in model container [2023-11-29 00:29:24,238 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:29:24" (3/3) ... [2023-11-29 00:29:24,239 INFO L112 eAbstractionObserver]: Analyzing ICFG lockfree-3.3.i [2023-11-29 00:29:24,255 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:29:24,256 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2023-11-29 00:29:24,296 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:29:24,302 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;@54aa19fb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:29:24,302 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-11-29 00:29:24,306 INFO L276 IsEmpty]: Start isEmpty. Operand has 56 states, 35 states have (on average 2.142857142857143) internal successors, (75), 55 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:24,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-29 00:29:24,311 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:24,311 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-29 00:29:24,312 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:29:24,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:24,317 INFO L85 PathProgramCache]: Analyzing trace with hash 5969409, now seen corresponding path program 1 times [2023-11-29 00:29:24,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:29:24,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [496110312] [2023-11-29 00:29:24,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:24,328 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:29:24,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:29:24,330 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:29:24,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-29 00:29:24,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:24,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 00:29:24,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:29:24,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:29:24,426 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:29:24,427 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:29:24,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [496110312] [2023-11-29 00:29:24,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [496110312] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:29:24,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:29:24,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:29:24,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568758567] [2023-11-29 00:29:24,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:29:24,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 00:29:24,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:29:24,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 00:29:24,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 00:29:24,475 INFO L87 Difference]: Start difference. First operand has 56 states, 35 states have (on average 2.142857142857143) internal successors, (75), 55 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2023-11-29 00:29:24,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:24,519 INFO L93 Difference]: Finished difference Result 56 states and 73 transitions. [2023-11-29 00:29:24,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 00:29:24,522 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2023-11-29 00:29:24,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:24,530 INFO L225 Difference]: With dead ends: 56 [2023-11-29 00:29:24,530 INFO L226 Difference]: Without dead ends: 55 [2023-11-29 00:29:24,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 00:29:24,535 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:24,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 65 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:29:24,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-11-29 00:29:24,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2023-11-29 00:29:24,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 35 states have (on average 2.057142857142857) internal successors, (72), 54 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:24,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 72 transitions. [2023-11-29 00:29:24,565 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 72 transitions. Word has length 4 [2023-11-29 00:29:24,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:24,565 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 72 transitions. [2023-11-29 00:29:24,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2023-11-29 00:29:24,566 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 72 transitions. [2023-11-29 00:29:24,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-29 00:29:24,566 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:24,566 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 00:29:24,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-29 00:29:24,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:29:24,768 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:29:24,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:24,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1323128715, now seen corresponding path program 1 times [2023-11-29 00:29:24,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:29:24,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [788234397] [2023-11-29 00:29:24,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:24,769 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:29:24,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:29:24,771 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:29:24,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-29 00:29:24,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:24,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 00:29:24,820 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:29:24,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:29:24,878 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:29:24,878 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:29:24,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [788234397] [2023-11-29 00:29:24,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [788234397] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:29:24,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:29:24,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:29:24,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238983438] [2023-11-29 00:29:24,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:29:24,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:29:24,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:29:24,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:29:24,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:29:24,882 INFO L87 Difference]: Start difference. First operand 55 states and 72 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-11-29 00:29:25,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:25,014 INFO L93 Difference]: Finished difference Result 89 states and 115 transitions. [2023-11-29 00:29:25,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:29:25,015 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2023-11-29 00:29:25,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:25,016 INFO L225 Difference]: With dead ends: 89 [2023-11-29 00:29:25,016 INFO L226 Difference]: Without dead ends: 89 [2023-11-29 00:29:25,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:29:25,017 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 40 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:25,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 170 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:29:25,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-11-29 00:29:25,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 70. [2023-11-29 00:29:25,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 50 states have (on average 2.04) internal successors, (102), 69 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) [2023-11-29 00:29:25,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 102 transitions. [2023-11-29 00:29:25,028 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 102 transitions. Word has length 6 [2023-11-29 00:29:25,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:25,029 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 102 transitions. [2023-11-29 00:29:25,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-11-29 00:29:25,029 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 102 transitions. [2023-11-29 00:29:25,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-29 00:29:25,030 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:25,030 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 00:29:25,032 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-29 00:29:25,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:29:25,233 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:29:25,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:25,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1323188297, now seen corresponding path program 1 times [2023-11-29 00:29:25,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:29:25,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1815150229] [2023-11-29 00:29:25,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:25,234 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:29:25,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:29:25,235 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:29:25,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-29 00:29:25,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:25,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:29:25,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:29:25,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:29:25,357 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:29:25,357 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:29:25,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1815150229] [2023-11-29 00:29:25,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1815150229] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:29:25,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:29:25,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:29:25,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749383941] [2023-11-29 00:29:25,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:29:25,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:29:25,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:29:25,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:29:25,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:29:25,360 INFO L87 Difference]: Start difference. First operand 70 states and 102 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2023-11-29 00:29:25,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:25,438 INFO L93 Difference]: Finished difference Result 127 states and 191 transitions. [2023-11-29 00:29:25,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:29:25,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2023-11-29 00:29:25,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:25,441 INFO L225 Difference]: With dead ends: 127 [2023-11-29 00:29:25,441 INFO L226 Difference]: Without dead ends: 127 [2023-11-29 00:29:25,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:29:25,443 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 57 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:25,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 116 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:29:25,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-11-29 00:29:25,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 109. [2023-11-29 00:29:25,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 89 states have (on average 2.0112359550561796) internal successors, (179), 108 states have internal predecessors, (179), 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) [2023-11-29 00:29:25,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 179 transitions. [2023-11-29 00:29:25,457 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 179 transitions. Word has length 6 [2023-11-29 00:29:25,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:25,458 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 179 transitions. [2023-11-29 00:29:25,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2023-11-29 00:29:25,458 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 179 transitions. [2023-11-29 00:29:25,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 00:29:25,459 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:25,459 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:25,461 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-29 00:29:25,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:29:25,660 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:29:25,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:25,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1930837147, now seen corresponding path program 1 times [2023-11-29 00:29:25,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:29:25,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2069003567] [2023-11-29 00:29:25,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:25,661 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:29:25,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:29:25,662 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:29:25,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-29 00:29:25,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:25,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 00:29:25,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:29:25,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:29:25,726 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:29:25,726 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:29:25,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2069003567] [2023-11-29 00:29:25,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2069003567] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:29:25,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:29:25,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:29:25,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694739818] [2023-11-29 00:29:25,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:29:25,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:29:25,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:29:25,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:29:25,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:29:25,729 INFO L87 Difference]: Start difference. First operand 109 states and 179 transitions. Second operand has 3 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) [2023-11-29 00:29:25,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:25,896 INFO L93 Difference]: Finished difference Result 180 states and 290 transitions. [2023-11-29 00:29:25,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:29:25,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 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 [2023-11-29 00:29:25,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:25,899 INFO L225 Difference]: With dead ends: 180 [2023-11-29 00:29:25,899 INFO L226 Difference]: Without dead ends: 177 [2023-11-29 00:29:25,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:29:25,900 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 57 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:25,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 103 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:29:25,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2023-11-29 00:29:25,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 158. [2023-11-29 00:29:25,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 138 states have (on average 2.0) internal successors, (276), 157 states have internal predecessors, (276), 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) [2023-11-29 00:29:25,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 276 transitions. [2023-11-29 00:29:25,912 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 276 transitions. Word has length 7 [2023-11-29 00:29:25,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:25,912 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 276 transitions. [2023-11-29 00:29:25,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-11-29 00:29:25,912 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 276 transitions. [2023-11-29 00:29:25,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 00:29:25,913 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:25,913 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:25,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-29 00:29:26,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:29:26,114 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:29:26,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:26,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1930894162, now seen corresponding path program 1 times [2023-11-29 00:29:26,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:29:26,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [598288162] [2023-11-29 00:29:26,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:26,115 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:29:26,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:29:26,116 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:29:26,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-29 00:29:26,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:26,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:29:26,165 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:29:26,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 00:29:26,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:29:26,205 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:29:26,205 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:29:26,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [598288162] [2023-11-29 00:29:26,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [598288162] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:29:26,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:29:26,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:29:26,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255874836] [2023-11-29 00:29:26,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:29:26,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:29:26,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:29:26,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:29:26,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:29:26,208 INFO L87 Difference]: Start difference. First operand 158 states and 276 transitions. Second operand has 3 states, 2 states have (on average 3.5) 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) [2023-11-29 00:29:26,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:26,348 INFO L93 Difference]: Finished difference Result 224 states and 374 transitions. [2023-11-29 00:29:26,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:29:26,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) 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 [2023-11-29 00:29:26,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:26,351 INFO L225 Difference]: With dead ends: 224 [2023-11-29 00:29:26,351 INFO L226 Difference]: Without dead ends: 224 [2023-11-29 00:29:26,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:29:26,352 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 61 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:26,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 141 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:29:26,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-11-29 00:29:26,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 204. [2023-11-29 00:29:26,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 186 states have (on average 1.9408602150537635) internal successors, (361), 203 states have internal predecessors, (361), 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) [2023-11-29 00:29:26,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 361 transitions. [2023-11-29 00:29:26,368 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 361 transitions. Word has length 7 [2023-11-29 00:29:26,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:26,368 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 361 transitions. [2023-11-29 00:29:26,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) 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) [2023-11-29 00:29:26,369 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 361 transitions. [2023-11-29 00:29:26,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 00:29:26,369 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:26,370 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:26,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-29 00:29:26,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:29:26,571 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:29:26,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:26,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1930894161, now seen corresponding path program 1 times [2023-11-29 00:29:26,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:29:26,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1881486715] [2023-11-29 00:29:26,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:26,572 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:29:26,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:29:26,573 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:29:26,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-29 00:29:26,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:26,618 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:29:26,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:29:26,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 00:29:26,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:29:26,639 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:29:26,639 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:29:26,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1881486715] [2023-11-29 00:29:26,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1881486715] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:29:26,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:29:26,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:29:26,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376648022] [2023-11-29 00:29:26,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:29:26,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:29:26,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:29:26,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:29:26,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:29:26,641 INFO L87 Difference]: Start difference. First operand 204 states and 361 transitions. Second operand has 3 states, 2 states have (on average 3.5) 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) [2023-11-29 00:29:26,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:26,779 INFO L93 Difference]: Finished difference Result 219 states and 365 transitions. [2023-11-29 00:29:26,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:29:26,779 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) 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 [2023-11-29 00:29:26,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:26,781 INFO L225 Difference]: With dead ends: 219 [2023-11-29 00:29:26,781 INFO L226 Difference]: Without dead ends: 219 [2023-11-29 00:29:26,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:29:26,782 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 60 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:26,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 148 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:29:26,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2023-11-29 00:29:26,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 202. [2023-11-29 00:29:26,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 186 states have (on average 1.8978494623655915) internal successors, (353), 201 states have internal predecessors, (353), 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) [2023-11-29 00:29:26,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 353 transitions. [2023-11-29 00:29:26,794 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 353 transitions. Word has length 7 [2023-11-29 00:29:26,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:26,795 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 353 transitions. [2023-11-29 00:29:26,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) 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) [2023-11-29 00:29:26,795 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 353 transitions. [2023-11-29 00:29:26,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-29 00:29:26,796 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:26,796 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:26,798 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-11-29 00:29:26,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:29:26,996 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:29:26,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:26,997 INFO L85 PathProgramCache]: Analyzing trace with hash 271831126, now seen corresponding path program 1 times [2023-11-29 00:29:26,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:29:26,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2133191766] [2023-11-29 00:29:26,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:26,997 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:29:26,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:29:26,998 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:29:26,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-29 00:29:27,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:27,039 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:29:27,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:29:27,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:29:27,058 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:29:27,058 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:29:27,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2133191766] [2023-11-29 00:29:27,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2133191766] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:29:27,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:29:27,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:29:27,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582952067] [2023-11-29 00:29:27,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:29:27,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:29:27,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:29:27,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:29:27,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:29:27,060 INFO L87 Difference]: Start difference. First operand 202 states and 353 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-11-29 00:29:27,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:27,145 INFO L93 Difference]: Finished difference Result 186 states and 296 transitions. [2023-11-29 00:29:27,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:29:27,146 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2023-11-29 00:29:27,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:27,147 INFO L225 Difference]: With dead ends: 186 [2023-11-29 00:29:27,148 INFO L226 Difference]: Without dead ends: 186 [2023-11-29 00:29:27,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:29:27,149 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 48 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:27,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 154 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:29:27,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2023-11-29 00:29:27,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 162. [2023-11-29 00:29:27,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 150 states have (on average 1.8533333333333333) internal successors, (278), 161 states have internal predecessors, (278), 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) [2023-11-29 00:29:27,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 278 transitions. [2023-11-29 00:29:27,157 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 278 transitions. Word has length 8 [2023-11-29 00:29:27,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:27,157 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 278 transitions. [2023-11-29 00:29:27,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-11-29 00:29:27,158 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 278 transitions. [2023-11-29 00:29:27,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-29 00:29:27,158 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:27,159 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:27,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-29 00:29:27,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:29:27,359 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:29:27,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:27,360 INFO L85 PathProgramCache]: Analyzing trace with hash -111813905, now seen corresponding path program 1 times [2023-11-29 00:29:27,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:29:27,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2036578243] [2023-11-29 00:29:27,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:27,360 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:29:27,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:29:27,361 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:29:27,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-29 00:29:27,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:27,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:29:27,404 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:29:27,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:29:27,431 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:29:27,431 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:29:27,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2036578243] [2023-11-29 00:29:27,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2036578243] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:29:27,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:29:27,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:29:27,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213991726] [2023-11-29 00:29:27,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:29:27,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:29:27,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:29:27,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:29:27,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:29:27,434 INFO L87 Difference]: Start difference. First operand 162 states and 278 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) [2023-11-29 00:29:27,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:27,495 INFO L93 Difference]: Finished difference Result 261 states and 411 transitions. [2023-11-29 00:29:27,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:29:27,496 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2023-11-29 00:29:27,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:27,498 INFO L225 Difference]: With dead ends: 261 [2023-11-29 00:29:27,498 INFO L226 Difference]: Without dead ends: 261 [2023-11-29 00:29:27,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:29:27,499 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 50 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:27,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 145 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:29:27,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2023-11-29 00:29:27,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 238. [2023-11-29 00:29:27,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 226 states have (on average 1.7168141592920354) internal successors, (388), 237 states have internal predecessors, (388), 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) [2023-11-29 00:29:27,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 388 transitions. [2023-11-29 00:29:27,509 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 388 transitions. Word has length 9 [2023-11-29 00:29:27,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:27,509 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 388 transitions. [2023-11-29 00:29:27,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) [2023-11-29 00:29:27,509 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 388 transitions. [2023-11-29 00:29:27,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-29 00:29:27,510 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:27,510 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:27,512 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-11-29 00:29:27,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:29:27,711 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:29:27,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:27,712 INFO L85 PathProgramCache]: Analyzing trace with hash -925635527, now seen corresponding path program 1 times [2023-11-29 00:29:27,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:29:27,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [184292688] [2023-11-29 00:29:27,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:27,712 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:29:27,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:29:27,713 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:29:27,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-29 00:29:27,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:27,768 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 00:29:27,769 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:29:27,807 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:29:27,807 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:29:27,849 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:29:27,849 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:29:27,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [184292688] [2023-11-29 00:29:27,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [184292688] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:29:27,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:29:27,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-11-29 00:29:27,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910517761] [2023-11-29 00:29:27,850 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:29:27,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:29:27,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:29:27,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:29:27,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:29:27,852 INFO L87 Difference]: Start difference. First operand 238 states and 388 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 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) [2023-11-29 00:29:28,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:28,082 INFO L93 Difference]: Finished difference Result 516 states and 776 transitions. [2023-11-29 00:29:28,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 00:29:28,083 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 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 15 [2023-11-29 00:29:28,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:28,086 INFO L225 Difference]: With dead ends: 516 [2023-11-29 00:29:28,086 INFO L226 Difference]: Without dead ends: 516 [2023-11-29 00:29:28,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:29:28,087 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 248 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:28,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 342 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:29:28,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2023-11-29 00:29:28,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 476. [2023-11-29 00:29:28,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 464 states have (on average 1.6379310344827587) internal successors, (760), 475 states have internal predecessors, (760), 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) [2023-11-29 00:29:28,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 760 transitions. [2023-11-29 00:29:28,105 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 760 transitions. Word has length 15 [2023-11-29 00:29:28,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:28,105 INFO L495 AbstractCegarLoop]: Abstraction has 476 states and 760 transitions. [2023-11-29 00:29:28,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 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) [2023-11-29 00:29:28,106 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 760 transitions. [2023-11-29 00:29:28,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-29 00:29:28,107 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:28,107 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:28,110 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-11-29 00:29:28,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:29:28,310 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:29:28,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:28,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1446576255, now seen corresponding path program 1 times [2023-11-29 00:29:28,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:29:28,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1370684949] [2023-11-29 00:29:28,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:28,311 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:29:28,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:29:28,311 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:29:28,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-29 00:29:28,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:28,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:29:28,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:29:28,397 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:29:28,398 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:29:28,425 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:29:28,426 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:29:28,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1370684949] [2023-11-29 00:29:28,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1370684949] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:29:28,426 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:29:28,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2023-11-29 00:29:28,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406758720] [2023-11-29 00:29:28,427 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:29:28,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:29:28,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:29:28,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:29:28,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:29:28,428 INFO L87 Difference]: Start difference. First operand 476 states and 760 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 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) [2023-11-29 00:29:28,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:28,558 INFO L93 Difference]: Finished difference Result 747 states and 1127 transitions. [2023-11-29 00:29:28,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:29:28,559 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 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 15 [2023-11-29 00:29:28,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:28,563 INFO L225 Difference]: With dead ends: 747 [2023-11-29 00:29:28,564 INFO L226 Difference]: Without dead ends: 747 [2023-11-29 00:29:28,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:29:28,565 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 94 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:28,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 356 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:29:28,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2023-11-29 00:29:28,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 661. [2023-11-29 00:29:28,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 649 states have (on average 1.5824345146379044) internal successors, (1027), 660 states have internal predecessors, (1027), 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) [2023-11-29 00:29:28,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 1027 transitions. [2023-11-29 00:29:28,596 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 1027 transitions. Word has length 15 [2023-11-29 00:29:28,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:28,597 INFO L495 AbstractCegarLoop]: Abstraction has 661 states and 1027 transitions. [2023-11-29 00:29:28,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 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) [2023-11-29 00:29:28,597 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 1027 transitions. [2023-11-29 00:29:28,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-29 00:29:28,598 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:28,598 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2023-11-29 00:29:28,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-29 00:29:28,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:29:28,801 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:29:28,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:28,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1156430351, now seen corresponding path program 2 times [2023-11-29 00:29:28,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:29:28,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [146060428] [2023-11-29 00:29:28,802 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:29:28,802 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:29:28,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:29:28,803 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:29:28,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-29 00:29:28,850 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:29:28,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:29:28,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 00:29:28,853 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:29:28,908 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 00:29:28,908 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:29:28,963 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 00:29:28,963 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:29:28,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [146060428] [2023-11-29 00:29:28,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [146060428] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:29:28,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:29:28,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-11-29 00:29:28,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49116361] [2023-11-29 00:29:28,964 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:29:28,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:29:28,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:29:28,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:29:28,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:29:28,965 INFO L87 Difference]: Start difference. First operand 661 states and 1027 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 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) [2023-11-29 00:29:29,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:29,203 INFO L93 Difference]: Finished difference Result 960 states and 1408 transitions. [2023-11-29 00:29:29,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 00:29:29,204 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 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 21 [2023-11-29 00:29:29,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:29,210 INFO L225 Difference]: With dead ends: 960 [2023-11-29 00:29:29,210 INFO L226 Difference]: Without dead ends: 960 [2023-11-29 00:29:29,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2023-11-29 00:29:29,211 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 114 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:29,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 505 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:29:29,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2023-11-29 00:29:29,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 888. [2023-11-29 00:29:29,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 888 states, 876 states have (on average 1.5091324200913243) internal successors, (1322), 887 states have internal predecessors, (1322), 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) [2023-11-29 00:29:29,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1322 transitions. [2023-11-29 00:29:29,238 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1322 transitions. Word has length 21 [2023-11-29 00:29:29,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:29,238 INFO L495 AbstractCegarLoop]: Abstraction has 888 states and 1322 transitions. [2023-11-29 00:29:29,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 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) [2023-11-29 00:29:29,238 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1322 transitions. [2023-11-29 00:29:29,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-29 00:29:29,240 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:29,240 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:29,242 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-11-29 00:29:29,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:29:29,442 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:29:29,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:29,443 INFO L85 PathProgramCache]: Analyzing trace with hash 936153864, now seen corresponding path program 1 times [2023-11-29 00:29:29,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:29:29,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [818162040] [2023-11-29 00:29:29,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:29,443 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:29:29,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:29:29,444 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:29:29,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-29 00:29:29,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:29,492 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 00:29:29,493 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:29:29,582 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:29:29,582 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:29:29,667 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:29:29,667 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:29:29,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [818162040] [2023-11-29 00:29:29,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [818162040] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:29:29,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:29:29,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2023-11-29 00:29:29,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721250929] [2023-11-29 00:29:29,668 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:29:29,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:29:29,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:29:29,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:29:29,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:29:29,669 INFO L87 Difference]: Start difference. First operand 888 states and 1322 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 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) [2023-11-29 00:29:29,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:29,774 INFO L93 Difference]: Finished difference Result 1143 states and 1650 transitions. [2023-11-29 00:29:29,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:29:29,775 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 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 23 [2023-11-29 00:29:29,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:29,781 INFO L225 Difference]: With dead ends: 1143 [2023-11-29 00:29:29,782 INFO L226 Difference]: Without dead ends: 1143 [2023-11-29 00:29:29,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:29:29,782 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 86 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:29,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 164 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:29:29,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1143 states. [2023-11-29 00:29:29,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1143 to 983. [2023-11-29 00:29:29,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 983 states, 971 states have (on average 1.4716786817713696) internal successors, (1429), 982 states have internal predecessors, (1429), 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) [2023-11-29 00:29:29,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 983 states to 983 states and 1429 transitions. [2023-11-29 00:29:29,810 INFO L78 Accepts]: Start accepts. Automaton has 983 states and 1429 transitions. Word has length 23 [2023-11-29 00:29:29,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:29,811 INFO L495 AbstractCegarLoop]: Abstraction has 983 states and 1429 transitions. [2023-11-29 00:29:29,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 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) [2023-11-29 00:29:29,811 INFO L276 IsEmpty]: Start isEmpty. Operand 983 states and 1429 transitions. [2023-11-29 00:29:29,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-29 00:29:29,812 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:29,812 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:29,815 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-11-29 00:29:30,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:29:30,016 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:29:30,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:30,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1970646423, now seen corresponding path program 1 times [2023-11-29 00:29:30,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:29:30,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1396481865] [2023-11-29 00:29:30,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:30,017 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:29:30,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:29:30,018 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:29:30,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-29 00:29:30,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:30,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:29:30,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:29:30,134 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:29:30,135 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:29:30,164 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:29:30,165 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:29:30,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1396481865] [2023-11-29 00:29:30,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1396481865] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:29:30,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:29:30,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2023-11-29 00:29:30,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58931264] [2023-11-29 00:29:30,165 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:29:30,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:29:30,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:29:30,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:29:30,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:29:30,167 INFO L87 Difference]: Start difference. First operand 983 states and 1429 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 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) [2023-11-29 00:29:30,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:30,385 INFO L93 Difference]: Finished difference Result 976 states and 1344 transitions. [2023-11-29 00:29:30,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:29:30,386 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 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 26 [2023-11-29 00:29:30,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:30,391 INFO L225 Difference]: With dead ends: 976 [2023-11-29 00:29:30,392 INFO L226 Difference]: Without dead ends: 976 [2023-11-29 00:29:30,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:29:30,392 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 85 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:30,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 429 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:29:30,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2023-11-29 00:29:30,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 917. [2023-11-29 00:29:30,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 917 states, 905 states have (on average 1.4331491712707183) internal successors, (1297), 916 states have internal predecessors, (1297), 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) [2023-11-29 00:29:30,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1297 transitions. [2023-11-29 00:29:30,417 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1297 transitions. Word has length 26 [2023-11-29 00:29:30,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:30,417 INFO L495 AbstractCegarLoop]: Abstraction has 917 states and 1297 transitions. [2023-11-29 00:29:30,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 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) [2023-11-29 00:29:30,418 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1297 transitions. [2023-11-29 00:29:30,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-29 00:29:30,419 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:30,419 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:30,421 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2023-11-29 00:29:30,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:29:30,620 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:29:30,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:30,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1195189769, now seen corresponding path program 1 times [2023-11-29 00:29:30,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:29:30,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1843901208] [2023-11-29 00:29:30,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:30,621 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:29:30,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:29:30,622 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:29:30,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-11-29 00:29:30,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:30,703 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 00:29:30,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:29:30,800 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 11 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:29:30,800 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:29:30,851 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 11 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:29:30,851 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:29:30,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1843901208] [2023-11-29 00:29:30,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1843901208] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:29:30,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:29:30,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2023-11-29 00:29:30,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359479658] [2023-11-29 00:29:30,852 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:29:30,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:29:30,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:29:30,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:29:30,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:29:30,853 INFO L87 Difference]: Start difference. First operand 917 states and 1297 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 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) [2023-11-29 00:29:31,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:31,180 INFO L93 Difference]: Finished difference Result 905 states and 1212 transitions. [2023-11-29 00:29:31,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 00:29:31,182 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 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 34 [2023-11-29 00:29:31,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:31,186 INFO L225 Difference]: With dead ends: 905 [2023-11-29 00:29:31,187 INFO L226 Difference]: Without dead ends: 905 [2023-11-29 00:29:31,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:29:31,188 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 117 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:31,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 685 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 00:29:31,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2023-11-29 00:29:31,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 862. [2023-11-29 00:29:31,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 850 states have (on average 1.3964705882352941) internal successors, (1187), 861 states have internal predecessors, (1187), 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) [2023-11-29 00:29:31,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 1187 transitions. [2023-11-29 00:29:31,212 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 1187 transitions. Word has length 34 [2023-11-29 00:29:31,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:31,212 INFO L495 AbstractCegarLoop]: Abstraction has 862 states and 1187 transitions. [2023-11-29 00:29:31,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 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) [2023-11-29 00:29:31,213 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 1187 transitions. [2023-11-29 00:29:31,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-29 00:29:31,214 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:31,214 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:31,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-11-29 00:29:31,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:29:31,416 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:29:31,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:31,416 INFO L85 PathProgramCache]: Analyzing trace with hash 848437669, now seen corresponding path program 1 times [2023-11-29 00:29:31,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:29:31,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [271788646] [2023-11-29 00:29:31,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:31,417 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:29:31,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:29:31,418 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:29:31,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-11-29 00:29:31,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:31,516 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 00:29:31,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:29:31,589 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 32 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 00:29:31,590 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:29:31,786 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 32 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 00:29:31,786 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:29:31,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [271788646] [2023-11-29 00:29:31,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [271788646] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:29:31,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:29:31,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-29 00:29:31,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19324113] [2023-11-29 00:29:31,787 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:29:31,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 00:29:31,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:29:31,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 00:29:31,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:29:31,788 INFO L87 Difference]: Start difference. First operand 862 states and 1187 transitions. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 states have internal predecessors, (58), 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) [2023-11-29 00:29:32,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:32,297 INFO L93 Difference]: Finished difference Result 1317 states and 1797 transitions. [2023-11-29 00:29:32,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 00:29:32,299 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 states have internal predecessors, (58), 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 39 [2023-11-29 00:29:32,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:32,306 INFO L225 Difference]: With dead ends: 1317 [2023-11-29 00:29:32,306 INFO L226 Difference]: Without dead ends: 1317 [2023-11-29 00:29:32,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2023-11-29 00:29:32,307 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 380 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:32,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 908 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 00:29:32,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1317 states. [2023-11-29 00:29:32,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1317 to 1239. [2023-11-29 00:29:32,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1239 states, 1227 states have (on average 1.430317848410758) internal successors, (1755), 1238 states have internal predecessors, (1755), 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) [2023-11-29 00:29:32,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 1755 transitions. [2023-11-29 00:29:32,338 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 1755 transitions. Word has length 39 [2023-11-29 00:29:32,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:32,339 INFO L495 AbstractCegarLoop]: Abstraction has 1239 states and 1755 transitions. [2023-11-29 00:29:32,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 10 states have internal predecessors, (58), 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) [2023-11-29 00:29:32,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 1755 transitions. [2023-11-29 00:29:32,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-29 00:29:32,340 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:32,340 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:32,343 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2023-11-29 00:29:32,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:29:32,541 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:29:32,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:32,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1386287647, now seen corresponding path program 1 times [2023-11-29 00:29:32,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:29:32,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [453004393] [2023-11-29 00:29:32,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:32,542 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:29:32,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:29:32,543 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:29:32,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-11-29 00:29:32,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:32,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 00:29:32,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:29:32,715 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 15 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:29:32,715 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:29:33,051 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 15 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:29:33,051 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:29:33,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [453004393] [2023-11-29 00:29:33,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [453004393] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:29:33,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:29:33,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2023-11-29 00:29:33,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494408014] [2023-11-29 00:29:33,052 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:29:33,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 00:29:33,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:29:33,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 00:29:33,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-11-29 00:29:33,053 INFO L87 Difference]: Start difference. First operand 1239 states and 1755 transitions. Second operand has 14 states, 14 states have (on average 5.0) internal successors, (70), 13 states have internal predecessors, (70), 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) [2023-11-29 00:29:33,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:33,822 INFO L93 Difference]: Finished difference Result 1778 states and 2426 transitions. [2023-11-29 00:29:33,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 00:29:33,823 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 13 states have internal predecessors, (70), 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 39 [2023-11-29 00:29:33,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:33,831 INFO L225 Difference]: With dead ends: 1778 [2023-11-29 00:29:33,831 INFO L226 Difference]: Without dead ends: 1778 [2023-11-29 00:29:33,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2023-11-29 00:29:33,833 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 693 mSDsluCounter, 1157 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 1311 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:33,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [693 Valid, 1311 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 00:29:33,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1778 states. [2023-11-29 00:29:33,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1778 to 1660. [2023-11-29 00:29:33,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1660 states, 1648 states have (on average 1.4296116504854368) internal successors, (2356), 1659 states have internal predecessors, (2356), 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) [2023-11-29 00:29:33,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1660 states to 1660 states and 2356 transitions. [2023-11-29 00:29:33,872 INFO L78 Accepts]: Start accepts. Automaton has 1660 states and 2356 transitions. Word has length 39 [2023-11-29 00:29:33,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:33,872 INFO L495 AbstractCegarLoop]: Abstraction has 1660 states and 2356 transitions. [2023-11-29 00:29:33,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 13 states have internal predecessors, (70), 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) [2023-11-29 00:29:33,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1660 states and 2356 transitions. [2023-11-29 00:29:33,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-29 00:29:33,873 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:33,873 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:33,876 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2023-11-29 00:29:34,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:29:34,074 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:29:34,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:34,075 INFO L85 PathProgramCache]: Analyzing trace with hash -830315202, now seen corresponding path program 1 times [2023-11-29 00:29:34,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:29:34,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2141665829] [2023-11-29 00:29:34,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:34,075 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:29:34,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:29:34,076 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:29:34,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-11-29 00:29:34,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:34,171 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 00:29:34,173 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:29:34,276 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 4 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:29:34,276 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:29:34,395 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 4 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:29:34,395 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:29:34,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2141665829] [2023-11-29 00:29:34,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2141665829] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:29:34,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:29:34,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-11-29 00:29:34,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508585562] [2023-11-29 00:29:34,396 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:29:34,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 00:29:34,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:29:34,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 00:29:34,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-11-29 00:29:34,398 INFO L87 Difference]: Start difference. First operand 1660 states and 2356 transitions. Second operand has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:35,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:35,066 INFO L93 Difference]: Finished difference Result 2078 states and 2817 transitions. [2023-11-29 00:29:35,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 00:29:35,067 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2023-11-29 00:29:35,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:35,076 INFO L225 Difference]: With dead ends: 2078 [2023-11-29 00:29:35,076 INFO L226 Difference]: Without dead ends: 2078 [2023-11-29 00:29:35,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=221, Invalid=481, Unknown=0, NotChecked=0, Total=702 [2023-11-29 00:29:35,077 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 676 mSDsluCounter, 1016 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 1162 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:35,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [676 Valid, 1162 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 00:29:35,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2078 states. [2023-11-29 00:29:35,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2078 to 2004. [2023-11-29 00:29:35,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2004 states, 1992 states have (on average 1.4071285140562249) internal successors, (2803), 2003 states have internal predecessors, (2803), 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) [2023-11-29 00:29:35,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2004 states to 2004 states and 2803 transitions. [2023-11-29 00:29:35,117 INFO L78 Accepts]: Start accepts. Automaton has 2004 states and 2803 transitions. Word has length 41 [2023-11-29 00:29:35,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:35,117 INFO L495 AbstractCegarLoop]: Abstraction has 2004 states and 2803 transitions. [2023-11-29 00:29:35,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:35,117 INFO L276 IsEmpty]: Start isEmpty. Operand 2004 states and 2803 transitions. [2023-11-29 00:29:35,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-29 00:29:35,118 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:35,118 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:35,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-11-29 00:29:35,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:29:35,319 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:29:35,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:35,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1571297123, now seen corresponding path program 1 times [2023-11-29 00:29:35,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:29:35,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1075919851] [2023-11-29 00:29:35,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:35,320 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:29:35,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:29:35,321 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:29:35,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-11-29 00:29:35,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:35,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 00:29:35,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:29:35,485 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 15 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:29:35,486 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:29:35,542 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 15 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:29:35,542 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:29:35,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1075919851] [2023-11-29 00:29:35,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1075919851] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:29:35,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:29:35,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2023-11-29 00:29:35,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446158704] [2023-11-29 00:29:35,543 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:29:35,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:29:35,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:29:35,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:29:35,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:29:35,544 INFO L87 Difference]: Start difference. First operand 2004 states and 2803 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 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) [2023-11-29 00:29:35,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:35,944 INFO L93 Difference]: Finished difference Result 2075 states and 2806 transitions. [2023-11-29 00:29:35,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 00:29:35,945 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 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 42 [2023-11-29 00:29:35,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:35,953 INFO L225 Difference]: With dead ends: 2075 [2023-11-29 00:29:35,953 INFO L226 Difference]: Without dead ends: 2075 [2023-11-29 00:29:35,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-11-29 00:29:35,954 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 131 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:35,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 852 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 00:29:35,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2075 states. [2023-11-29 00:29:36,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2075 to 1971. [2023-11-29 00:29:36,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1971 states, 1959 states have (on average 1.3915262889229199) internal successors, (2726), 1970 states have internal predecessors, (2726), 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) [2023-11-29 00:29:36,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1971 states to 1971 states and 2726 transitions. [2023-11-29 00:29:36,014 INFO L78 Accepts]: Start accepts. Automaton has 1971 states and 2726 transitions. Word has length 42 [2023-11-29 00:29:36,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:36,014 INFO L495 AbstractCegarLoop]: Abstraction has 1971 states and 2726 transitions. [2023-11-29 00:29:36,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 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) [2023-11-29 00:29:36,014 INFO L276 IsEmpty]: Start isEmpty. Operand 1971 states and 2726 transitions. [2023-11-29 00:29:36,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-29 00:29:36,015 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:36,015 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:36,017 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2023-11-29 00:29:36,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:29:36,216 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:29:36,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:36,216 INFO L85 PathProgramCache]: Analyzing trace with hash 293999540, now seen corresponding path program 1 times [2023-11-29 00:29:36,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:29:36,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [657508] [2023-11-29 00:29:36,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:36,217 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:29:36,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:29:36,218 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:29:36,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-11-29 00:29:36,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:36,318 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 00:29:36,321 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:29:36,429 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 19 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:29:36,430 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:29:36,498 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 19 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:29:36,498 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:29:36,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [657508] [2023-11-29 00:29:36,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [657508] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:29:36,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:29:36,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2023-11-29 00:29:36,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206589118] [2023-11-29 00:29:36,499 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:29:36,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:29:36,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:29:36,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:29:36,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:29:36,500 INFO L87 Difference]: Start difference. First operand 1971 states and 2726 transitions. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 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) [2023-11-29 00:29:37,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:37,009 INFO L93 Difference]: Finished difference Result 2070 states and 2773 transitions. [2023-11-29 00:29:37,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 00:29:37,010 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 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 52 [2023-11-29 00:29:37,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:37,017 INFO L225 Difference]: With dead ends: 2070 [2023-11-29 00:29:37,017 INFO L226 Difference]: Without dead ends: 2070 [2023-11-29 00:29:37,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2023-11-29 00:29:37,018 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 162 mSDsluCounter, 1011 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:37,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 1181 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 00:29:37,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2070 states. [2023-11-29 00:29:37,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2070 to 1960. [2023-11-29 00:29:37,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1960 states, 1948 states have (on average 1.3824435318275154) internal successors, (2693), 1959 states have internal predecessors, (2693), 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) [2023-11-29 00:29:37,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1960 states to 1960 states and 2693 transitions. [2023-11-29 00:29:37,043 INFO L78 Accepts]: Start accepts. Automaton has 1960 states and 2693 transitions. Word has length 52 [2023-11-29 00:29:37,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:37,044 INFO L495 AbstractCegarLoop]: Abstraction has 1960 states and 2693 transitions. [2023-11-29 00:29:37,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 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) [2023-11-29 00:29:37,044 INFO L276 IsEmpty]: Start isEmpty. Operand 1960 states and 2693 transitions. [2023-11-29 00:29:37,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-29 00:29:37,045 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:37,045 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:37,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-11-29 00:29:37,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:29:37,246 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:29:37,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:37,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1446605301, now seen corresponding path program 2 times [2023-11-29 00:29:37,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:29:37,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [111716780] [2023-11-29 00:29:37,246 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:29:37,247 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:29:37,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:29:37,247 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:29:37,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-11-29 00:29:37,331 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:29:37,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:29:37,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 00:29:37,337 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:29:37,431 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 58 proven. 66 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 00:29:37,432 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:29:37,927 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 58 proven. 66 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 00:29:37,927 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:29:37,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [111716780] [2023-11-29 00:29:37,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [111716780] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:29:37,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:29:37,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 16 [2023-11-29 00:29:37,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186247155] [2023-11-29 00:29:37,928 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:29:37,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 00:29:37,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:29:37,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 00:29:37,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2023-11-29 00:29:37,930 INFO L87 Difference]: Start difference. First operand 1960 states and 2693 transitions. Second operand has 17 states, 17 states have (on average 6.0) internal successors, (102), 16 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) [2023-11-29 00:29:38,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:38,822 INFO L93 Difference]: Finished difference Result 1788 states and 2313 transitions. [2023-11-29 00:29:38,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 00:29:38,823 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.0) internal successors, (102), 16 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) Word has length 62 [2023-11-29 00:29:38,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:38,829 INFO L225 Difference]: With dead ends: 1788 [2023-11-29 00:29:38,829 INFO L226 Difference]: Without dead ends: 1788 [2023-11-29 00:29:38,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=185, Invalid=627, Unknown=0, NotChecked=0, Total=812 [2023-11-29 00:29:38,830 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 780 mSDsluCounter, 1221 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 1386 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:38,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 1386 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 00:29:38,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1788 states. [2023-11-29 00:29:38,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1788 to 1714. [2023-11-29 00:29:38,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1714 states, 1702 states have (on average 1.3507638072855463) internal successors, (2299), 1713 states have internal predecessors, (2299), 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) [2023-11-29 00:29:38,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1714 states to 1714 states and 2299 transitions. [2023-11-29 00:29:38,851 INFO L78 Accepts]: Start accepts. Automaton has 1714 states and 2299 transitions. Word has length 62 [2023-11-29 00:29:38,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:38,851 INFO L495 AbstractCegarLoop]: Abstraction has 1714 states and 2299 transitions. [2023-11-29 00:29:38,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.0) internal successors, (102), 16 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) [2023-11-29 00:29:38,851 INFO L276 IsEmpty]: Start isEmpty. Operand 1714 states and 2299 transitions. [2023-11-29 00:29:38,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-29 00:29:38,852 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:38,852 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:38,854 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2023-11-29 00:29:39,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:29:39,053 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:29:39,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:39,053 INFO L85 PathProgramCache]: Analyzing trace with hash 2122980990, now seen corresponding path program 1 times [2023-11-29 00:29:39,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:29:39,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [629224233] [2023-11-29 00:29:39,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:39,054 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:29:39,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:29:39,055 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:29:39,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-11-29 00:29:39,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:39,141 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:29:39,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:29:39,217 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 33 proven. 47 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-29 00:29:39,217 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:29:39,277 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 33 proven. 47 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-29 00:29:39,277 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:29:39,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [629224233] [2023-11-29 00:29:39,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [629224233] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:29:39,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:29:39,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2023-11-29 00:29:39,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799012200] [2023-11-29 00:29:39,278 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:29:39,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:29:39,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:29:39,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:29:39,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:29:39,279 INFO L87 Difference]: Start difference. First operand 1714 states and 2299 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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) [2023-11-29 00:29:39,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:39,477 INFO L93 Difference]: Finished difference Result 3116 states and 4203 transitions. [2023-11-29 00:29:39,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:29:39,478 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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 63 [2023-11-29 00:29:39,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:39,489 INFO L225 Difference]: With dead ends: 3116 [2023-11-29 00:29:39,489 INFO L226 Difference]: Without dead ends: 3116 [2023-11-29 00:29:39,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:29:39,490 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 100 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:39,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 205 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:29:39,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3116 states. [2023-11-29 00:29:39,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3116 to 2582. [2023-11-29 00:29:39,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2582 states, 2570 states have (on average 1.36147859922179) internal successors, (3499), 2581 states have internal predecessors, (3499), 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) [2023-11-29 00:29:39,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2582 states to 2582 states and 3499 transitions. [2023-11-29 00:29:39,543 INFO L78 Accepts]: Start accepts. Automaton has 2582 states and 3499 transitions. Word has length 63 [2023-11-29 00:29:39,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:39,543 INFO L495 AbstractCegarLoop]: Abstraction has 2582 states and 3499 transitions. [2023-11-29 00:29:39,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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) [2023-11-29 00:29:39,543 INFO L276 IsEmpty]: Start isEmpty. Operand 2582 states and 3499 transitions. [2023-11-29 00:29:39,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-29 00:29:39,544 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:39,544 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 5, 5, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:39,546 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2023-11-29 00:29:39,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:29:39,744 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:29:39,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:39,745 INFO L85 PathProgramCache]: Analyzing trace with hash -974106543, now seen corresponding path program 1 times [2023-11-29 00:29:39,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:29:39,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1339536767] [2023-11-29 00:29:39,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:39,745 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:29:39,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:29:39,746 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:29:39,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-11-29 00:29:39,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:39,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 00:29:39,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:29:39,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 00:29:39,948 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 32 proven. 62 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-11-29 00:29:39,948 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:29:40,036 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 32 proven. 62 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-11-29 00:29:40,036 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:29:40,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1339536767] [2023-11-29 00:29:40,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1339536767] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:29:40,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:29:40,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2023-11-29 00:29:40,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026471913] [2023-11-29 00:29:40,036 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:29:40,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:29:40,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:29:40,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:29:40,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:29:40,038 INFO L87 Difference]: Start difference. First operand 2582 states and 3499 transitions. Second operand has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 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) [2023-11-29 00:29:40,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:40,388 INFO L93 Difference]: Finished difference Result 5221 states and 7070 transitions. [2023-11-29 00:29:40,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:29:40,389 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 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 68 [2023-11-29 00:29:40,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:40,408 INFO L225 Difference]: With dead ends: 5221 [2023-11-29 00:29:40,408 INFO L226 Difference]: Without dead ends: 5221 [2023-11-29 00:29:40,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:29:40,409 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 223 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:40,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 222 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 00:29:40,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5221 states. [2023-11-29 00:29:40,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5221 to 4605. [2023-11-29 00:29:40,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4605 states, 4594 states have (on average 1.3728776665215499) internal successors, (6307), 4604 states have internal predecessors, (6307), 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) [2023-11-29 00:29:40,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4605 states to 4605 states and 6307 transitions. [2023-11-29 00:29:40,473 INFO L78 Accepts]: Start accepts. Automaton has 4605 states and 6307 transitions. Word has length 68 [2023-11-29 00:29:40,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:40,473 INFO L495 AbstractCegarLoop]: Abstraction has 4605 states and 6307 transitions. [2023-11-29 00:29:40,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 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) [2023-11-29 00:29:40,474 INFO L276 IsEmpty]: Start isEmpty. Operand 4605 states and 6307 transitions. [2023-11-29 00:29:40,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-29 00:29:40,474 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:40,474 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 5, 5, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:40,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-11-29 00:29:40,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:29:40,675 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:29:40,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:40,676 INFO L85 PathProgramCache]: Analyzing trace with hash -974106542, now seen corresponding path program 1 times [2023-11-29 00:29:40,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:29:40,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [770654628] [2023-11-29 00:29:40,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:40,676 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:29:40,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:29:40,677 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:29:40,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-11-29 00:29:40,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:40,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 00:29:40,771 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:29:40,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 00:29:41,049 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 32 proven. 62 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-11-29 00:29:41,049 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:29:41,604 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 32 proven. 62 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-11-29 00:29:41,604 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:29:41,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [770654628] [2023-11-29 00:29:41,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [770654628] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:29:41,604 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:29:41,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-11-29 00:29:41,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337247450] [2023-11-29 00:29:41,604 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:29:41,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:29:41,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:29:41,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:29:41,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:29:41,606 INFO L87 Difference]: Start difference. First operand 4605 states and 6307 transitions. Second operand has 8 states, 7 states have (on average 11.0) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:42,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:42,551 INFO L93 Difference]: Finished difference Result 7341 states and 10085 transitions. [2023-11-29 00:29:42,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:29:42,553 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2023-11-29 00:29:42,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:42,568 INFO L225 Difference]: With dead ends: 7341 [2023-11-29 00:29:42,568 INFO L226 Difference]: Without dead ends: 7341 [2023-11-29 00:29:42,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2023-11-29 00:29:42,569 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 255 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:42,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 423 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 00:29:42,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7341 states. [2023-11-29 00:29:42,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7341 to 6136. [2023-11-29 00:29:42,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6136 states, 6125 states have (on average 1.400326530612245) internal successors, (8577), 6135 states have internal predecessors, (8577), 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) [2023-11-29 00:29:42,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6136 states to 6136 states and 8577 transitions. [2023-11-29 00:29:42,659 INFO L78 Accepts]: Start accepts. Automaton has 6136 states and 8577 transitions. Word has length 68 [2023-11-29 00:29:42,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:42,659 INFO L495 AbstractCegarLoop]: Abstraction has 6136 states and 8577 transitions. [2023-11-29 00:29:42,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:29:42,659 INFO L276 IsEmpty]: Start isEmpty. Operand 6136 states and 8577 transitions. [2023-11-29 00:29:42,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-29 00:29:42,662 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:42,662 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 8, 6, 6, 5, 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, 1, 1, 1, 1, 1] [2023-11-29 00:29:42,664 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2023-11-29 00:29:42,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:29:42,862 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:29:42,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:42,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1866491219, now seen corresponding path program 1 times [2023-11-29 00:29:42,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:29:42,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1610021133] [2023-11-29 00:29:42,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:42,863 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:29:42,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:29:42,864 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:29:42,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-11-29 00:29:42,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:29:42,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 00:29:42,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:29:43,052 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 29 proven. 65 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2023-11-29 00:29:43,052 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:29:43,142 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 29 proven. 65 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2023-11-29 00:29:43,142 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:29:43,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1610021133] [2023-11-29 00:29:43,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1610021133] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:29:43,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:29:43,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2023-11-29 00:29:43,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923145091] [2023-11-29 00:29:43,143 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:29:43,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:29:43,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:29:43,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:29:43,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:29:43,144 INFO L87 Difference]: Start difference. First operand 6136 states and 8577 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 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) [2023-11-29 00:29:43,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:43,285 INFO L93 Difference]: Finished difference Result 7716 states and 10701 transitions. [2023-11-29 00:29:43,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 00:29:43,286 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 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 87 [2023-11-29 00:29:43,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:43,296 INFO L225 Difference]: With dead ends: 7716 [2023-11-29 00:29:43,296 INFO L226 Difference]: Without dead ends: 7716 [2023-11-29 00:29:43,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:29:43,296 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 115 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:43,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 665 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:29:43,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7716 states. [2023-11-29 00:29:43,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7716 to 7176. [2023-11-29 00:29:43,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7176 states, 7165 states have (on average 1.3969295184926727) internal successors, (10009), 7175 states have internal predecessors, (10009), 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) [2023-11-29 00:29:43,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7176 states to 7176 states and 10009 transitions. [2023-11-29 00:29:43,401 INFO L78 Accepts]: Start accepts. Automaton has 7176 states and 10009 transitions. Word has length 87 [2023-11-29 00:29:43,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:43,401 INFO L495 AbstractCegarLoop]: Abstraction has 7176 states and 10009 transitions. [2023-11-29 00:29:43,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 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) [2023-11-29 00:29:43,402 INFO L276 IsEmpty]: Start isEmpty. Operand 7176 states and 10009 transitions. [2023-11-29 00:29:43,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-29 00:29:43,403 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:43,403 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 9, 6, 6, 5, 4, 4, 4, 3, 3, 2, 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] [2023-11-29 00:29:43,406 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2023-11-29 00:29:43,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:29:43,604 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:29:43,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:43,604 INFO L85 PathProgramCache]: Analyzing trace with hash 497364570, now seen corresponding path program 2 times [2023-11-29 00:29:43,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:29:43,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [99228919] [2023-11-29 00:29:43,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:29:43,605 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:29:43,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:29:43,606 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:29:43,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-11-29 00:29:43,696 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:29:43,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:29:43,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 00:29:43,701 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:29:43,816 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 73 proven. 65 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-11-29 00:29:43,816 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:29:44,092 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 73 proven. 65 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-11-29 00:29:44,093 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:29:44,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [99228919] [2023-11-29 00:29:44,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [99228919] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:29:44,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:29:44,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-29 00:29:44,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000311445] [2023-11-29 00:29:44,093 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:29:44,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 00:29:44,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:29:44,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 00:29:44,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:29:44,094 INFO L87 Difference]: Start difference. First operand 7176 states and 10009 transitions. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 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) [2023-11-29 00:29:44,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:29:44,380 INFO L93 Difference]: Finished difference Result 13163 states and 17940 transitions. [2023-11-29 00:29:44,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 00:29:44,381 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 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 95 [2023-11-29 00:29:44,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:29:44,397 INFO L225 Difference]: With dead ends: 13163 [2023-11-29 00:29:44,397 INFO L226 Difference]: Without dead ends: 13163 [2023-11-29 00:29:44,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2023-11-29 00:29:44,398 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 356 mSDsluCounter, 847 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 981 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:29:44,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 981 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:29:44,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13163 states. [2023-11-29 00:29:44,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13163 to 12882. [2023-11-29 00:29:44,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12882 states, 12871 states have (on average 1.3639188874213348) internal successors, (17555), 12881 states have internal predecessors, (17555), 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) [2023-11-29 00:29:44,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12882 states to 12882 states and 17555 transitions. [2023-11-29 00:29:44,562 INFO L78 Accepts]: Start accepts. Automaton has 12882 states and 17555 transitions. Word has length 95 [2023-11-29 00:29:44,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:29:44,563 INFO L495 AbstractCegarLoop]: Abstraction has 12882 states and 17555 transitions. [2023-11-29 00:29:44,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 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) [2023-11-29 00:29:44,563 INFO L276 IsEmpty]: Start isEmpty. Operand 12882 states and 17555 transitions. [2023-11-29 00:29:44,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-29 00:29:44,564 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:29:44,565 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 9, 6, 6, 5, 4, 4, 4, 3, 3, 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] [2023-11-29 00:29:44,567 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0 [2023-11-29 00:29:44,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:29:44,765 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-29 00:29:44,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:29:44,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1764911483, now seen corresponding path program 1 times [2023-11-29 00:29:44,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:29:44,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2021506558] [2023-11-29 00:29:44,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:29:44,766 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:29:44,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:29:44,767 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:29:44,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-11-29 00:29:44,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 00:29:44,933 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 00:29:45,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 00:29:45,067 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-11-29 00:29:45,067 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 00:29:45,068 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK (19 of 20 remaining) [2023-11-29 00:29:45,070 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 20 remaining) [2023-11-29 00:29:45,070 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 20 remaining) [2023-11-29 00:29:45,070 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 20 remaining) [2023-11-29 00:29:45,071 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 20 remaining) [2023-11-29 00:29:45,071 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 20 remaining) [2023-11-29 00:29:45,071 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 20 remaining) [2023-11-29 00:29:45,071 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 20 remaining) [2023-11-29 00:29:45,071 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 20 remaining) [2023-11-29 00:29:45,071 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 20 remaining) [2023-11-29 00:29:45,072 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 20 remaining) [2023-11-29 00:29:45,072 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 20 remaining) [2023-11-29 00:29:45,072 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 20 remaining) [2023-11-29 00:29:45,072 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 20 remaining) [2023-11-29 00:29:45,072 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 20 remaining) [2023-11-29 00:29:45,072 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 20 remaining) [2023-11-29 00:29:45,072 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 20 remaining) [2023-11-29 00:29:45,072 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE (2 of 20 remaining) [2023-11-29 00:29:45,073 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE (1 of 20 remaining) [2023-11-29 00:29:45,073 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE (0 of 20 remaining) [2023-11-29 00:29:45,076 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2023-11-29 00:29:45,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:29:45,275 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:29:45,278 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 00:29:45,325 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated [2023-11-29 00:29:45,326 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated [2023-11-29 00:29:45,327 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated [2023-11-29 00:29:45,327 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated [2023-11-29 00:29:45,328 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated [2023-11-29 00:29:45,328 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated [2023-11-29 00:29:45,329 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated [2023-11-29 00:29:45,329 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated [2023-11-29 00:29:45,329 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated [2023-11-29 00:29:45,330 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated [2023-11-29 00:29:45,331 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated [2023-11-29 00:29:45,331 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated [2023-11-29 00:29:45,331 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated [2023-11-29 00:29:45,332 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated [2023-11-29 00:29:45,332 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated [2023-11-29 00:29:45,332 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated [2023-11-29 00:29:45,333 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated [2023-11-29 00:29:45,333 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated [2023-11-29 00:29:45,333 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated [2023-11-29 00:29:45,334 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated [2023-11-29 00:29:45,334 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated [2023-11-29 00:29:45,334 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated [2023-11-29 00:29:45,335 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated [2023-11-29 00:29:45,336 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated [2023-11-29 00:29:45,336 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated [2023-11-29 00:29:45,336 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated [2023-11-29 00:29:45,337 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated [2023-11-29 00:29:45,337 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated [2023-11-29 00:29:45,337 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated [2023-11-29 00:29:45,338 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated [2023-11-29 00:29:45,338 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated [2023-11-29 00:29:45,338 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated [2023-11-29 00:29:45,339 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated [2023-11-29 00:29:45,339 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated [2023-11-29 00:29:45,339 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated [2023-11-29 00:29:45,340 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated [2023-11-29 00:29:45,340 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated [2023-11-29 00:29:45,340 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated [2023-11-29 00:29:45,341 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated [2023-11-29 00:29:45,341 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated [2023-11-29 00:29:45,341 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated [2023-11-29 00:29:45,342 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated [2023-11-29 00:29:45,342 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated [2023-11-29 00:29:45,342 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch7 could not be translated [2023-11-29 00:29:45,343 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated [2023-11-29 00:29:45,343 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated [2023-11-29 00:29:45,343 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch7 could not be translated [2023-11-29 00:29:45,344 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated [2023-11-29 00:29:45,344 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch7 could not be translated [2023-11-29 00:29:45,345 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated [2023-11-29 00:29:45,345 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated [2023-11-29 00:29:45,346 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch7 could not be translated [2023-11-29 00:29:45,346 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated [2023-11-29 00:29:45,347 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~switch7 could not be translated [2023-11-29 00:29:45,347 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated [2023-11-29 00:29:45,347 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated [2023-11-29 00:29:45,347 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated [2023-11-29 00:29:45,361 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 12:29:45 BoogieIcfgContainer [2023-11-29 00:29:45,361 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 00:29:45,362 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 00:29:45,362 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 00:29:45,362 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 00:29:45,362 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:29:24" (3/4) ... [2023-11-29 00:29:45,364 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-29 00:29:45,365 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 00:29:45,366 INFO L158 Benchmark]: Toolchain (without parser) took 22258.06ms. Allocated memory was 81.8MB in the beginning and 211.8MB in the end (delta: 130.0MB). Free memory was 60.5MB in the beginning and 99.9MB in the end (delta: -39.4MB). Peak memory consumption was 91.3MB. Max. memory is 16.1GB. [2023-11-29 00:29:45,366 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 81.8MB. Free memory is still 58.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 00:29:45,366 INFO L158 Benchmark]: CACSL2BoogieTranslator took 436.13ms. Allocated memory is still 81.8MB. Free memory was 60.5MB in the beginning and 41.9MB in the end (delta: 18.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-29 00:29:45,366 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.86ms. Allocated memory is still 81.8MB. Free memory was 41.9MB in the beginning and 39.6MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 00:29:45,367 INFO L158 Benchmark]: Boogie Preprocessor took 63.35ms. Allocated memory was 81.8MB in the beginning and 121.6MB in the end (delta: 39.8MB). Free memory was 39.6MB in the beginning and 99.7MB in the end (delta: -60.2MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. [2023-11-29 00:29:45,367 INFO L158 Benchmark]: RCFGBuilder took 570.23ms. Allocated memory is still 121.6MB. Free memory was 99.7MB in the beginning and 75.1MB in the end (delta: 24.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-29 00:29:45,367 INFO L158 Benchmark]: TraceAbstraction took 21128.17ms. Allocated memory was 121.6MB in the beginning and 211.8MB in the end (delta: 90.2MB). Free memory was 74.6MB in the beginning and 100.8MB in the end (delta: -26.2MB). Peak memory consumption was 62.4MB. Max. memory is 16.1GB. [2023-11-29 00:29:45,368 INFO L158 Benchmark]: Witness Printer took 3.60ms. Allocated memory is still 211.8MB. Free memory was 100.8MB in the beginning and 99.9MB in the end (delta: 885.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 00:29:45,369 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 81.8MB. Free memory is still 58.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 436.13ms. Allocated memory is still 81.8MB. Free memory was 60.5MB in the beginning and 41.9MB in the end (delta: 18.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.86ms. Allocated memory is still 81.8MB. Free memory was 41.9MB in the beginning and 39.6MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.35ms. Allocated memory was 81.8MB in the beginning and 121.6MB in the end (delta: 39.8MB). Free memory was 39.6MB in the beginning and 99.7MB in the end (delta: -60.2MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. * RCFGBuilder took 570.23ms. Allocated memory is still 121.6MB. Free memory was 99.7MB in the beginning and 75.1MB in the end (delta: 24.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 21128.17ms. Allocated memory was 121.6MB in the beginning and 211.8MB in the end (delta: 90.2MB). Free memory was 74.6MB in the beginning and 100.8MB in the end (delta: -26.2MB). Peak memory consumption was 62.4MB. Max. memory is 16.1GB. * Witness Printer took 3.60ms. Allocated memory is still 211.8MB. Free memory was 100.8MB in the beginning and 99.9MB in the end (delta: 885.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~switch7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~post6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 592]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 592. Possible FailurePath: [L528] struct cell *S; [L529] int pc1 = 1; [L530] int pc4 = 1; [L531] static struct cell *t1 = ((void *)0); [L532] static struct cell *x1 = ((void *)0); [L561] struct cell* garbage; [L562] static struct cell *t4 = ((void *)0); [L563] static struct cell *x4 = ((void *)0); [L566] static int res4; [L594] S || 1 != pc1 || __VERIFIER_nondet_int() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [S={0:0}, garbage={0:0}, pc1=1, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() [L535] pc1++ [L536] case 1: VAL [S={0:0}, garbage={0:0}, pc1=2, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] [L536] case 1: [L537] x1 = malloc(sizeof(*x1)) [L538] x1->data = 0 VAL [S={0:0}, garbage={0:0}, pc1=2, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L539] x1->next = ((void *)0) VAL [S={0:0}, garbage={0:0}, pc1=2, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L596] RET push() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [S={0:0}, garbage={0:0}, pc1=2, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() [L535] pc1++ [L536] case 1: VAL [S={0:0}, garbage={0:0}, pc1=3, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L536] case 1: [L541] case 2: VAL [S={0:0}, garbage={0:0}, pc1=3, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L541] case 2: VAL [S={0:0}, garbage={0:0}, pc1=3, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L542] x1->data = 4 VAL [S={0:0}, garbage={0:0}, pc1=3, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L596] RET push() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [S={0:0}, garbage={0:0}, pc1=3, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() [L535] pc1++ [L536] case 1: VAL [S={0:0}, garbage={0:0}, pc1=4, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L536] case 1: [L541] case 2: VAL [S={0:0}, garbage={0:0}, pc1=4, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L541] case 2: [L544] case 3: [L545] t1 = S VAL [S={0:0}, garbage={0:0}, pc1=4, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L596] RET push() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [S={0:0}, garbage={0:0}, pc1=4, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() [L535] pc1++ [L536] case 1: VAL [S={0:0}, garbage={0:0}, pc1=5, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L536] case 1: [L541] case 2: VAL [S={0:0}, garbage={0:0}, pc1=5, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L541] case 2: [L544] case 3: [L547] case 4: VAL [S={0:0}, garbage={0:0}, pc1=5, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L547] case 4: VAL [S={0:0}, garbage={0:0}, pc1=5, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L548] x1->next = t1 VAL [S={0:0}, garbage={0:0}, pc1=5, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L596] RET push() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [S={0:0}, garbage={0:0}, pc1=5, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() [L535] pc1++ [L536] case 1: VAL [S={0:0}, garbage={0:0}, pc1=6, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L536] case 1: [L541] case 2: VAL [S={0:0}, garbage={0:0}, pc1=6, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L541] case 2: [L544] case 3: [L547] case 4: VAL [S={0:0}, garbage={0:0}, pc1=6, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L547] case 4: [L550] case 5: [L552] S = x1 VAL [S={6:0}, garbage={0:0}, pc1=6, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L596] RET push() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [S={6:0}, garbage={0:0}, pc1=6, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() [L535] pc1++ [L536] case 1: VAL [S={6:0}, garbage={0:0}, pc1=7, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L536] case 1: [L541] case 2: VAL [S={6:0}, garbage={0:0}, pc1=7, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L541] case 2: [L544] case 3: [L547] case 4: VAL [S={6:0}, garbage={0:0}, pc1=7, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L547] case 4: [L550] case 5: [L556] case 6: [L557] pc1 = 1 VAL [S={6:0}, garbage={0:0}, pc1=1, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L596] RET push() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [S={6:0}, garbage={0:0}, pc1=1, pc4=1, res4=0, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND FALSE !(__VERIFIER_nondet_int()) [L598] CALL pop() [L567] pc4++ [L568] case 1: [L569] t4 = S VAL [S={6:0}, garbage={0:0}, pc1=1, pc4=2, res4=0, t1={0:0}, t4={6:0}, x1={6:0}, x4={0:0}] [L598] RET pop() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [S={6:0}, garbage={0:0}, pc1=1, pc4=2, res4=0, t1={0:0}, t4={6:0}, x1={6:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND FALSE !(__VERIFIER_nondet_int()) [L598] CALL pop() [L567] pc4++ [L568] case 1: [L571] case 2: VAL [S={6:0}, garbage={0:0}, pc1=1, pc4=3, res4=0, t1={0:0}, t4={6:0}, x1={6:0}, x4={0:0}] [L598] RET pop() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [S={6:0}, garbage={0:0}, pc1=1, pc4=3, res4=0, t1={0:0}, t4={6:0}, x1={6:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND FALSE !(__VERIFIER_nondet_int()) [L598] CALL pop() [L567] pc4++ [L568] case 1: [L571] case 2: [L575] case 3: VAL [S={6:0}, garbage={0:0}, pc1=1, pc4=4, res4=0, t1={0:0}, t4={6:0}, x1={6:0}, x4={0:0}] [L575] case 3: VAL [S={6:0}, garbage={0:0}, pc1=1, pc4=4, res4=0, t1={0:0}, t4={6:0}, x1={6:0}, x4={0:0}] [L576] EXPR t4->next [L576] x4 = t4->next [L598] RET pop() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [S={6:0}, garbage={0:0}, pc1=1, pc4=4, res4=0, t1={0:0}, t4={6:0}, x1={6:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND FALSE !(__VERIFIER_nondet_int()) [L598] CALL pop() [L567] pc4++ [L568] case 1: [L571] case 2: [L575] case 3: VAL [S={6:0}, garbage={0:0}, pc1=1, pc4=5, res4=0, t1={0:0}, t4={6:0}, x1={6:0}, x4={0:0}] [L575] case 3: [L578] case 4: [L580] S = x4 VAL [S={0:0}, garbage={0:0}, pc1=1, pc4=5, res4=0, t1={0:0}, t4={6:0}, x1={6:0}, x4={0:0}] [L598] RET pop() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [S={0:0}, garbage={0:0}, pc1=1, pc4=5, res4=0, t1={0:0}, t4={6:0}, x1={6:0}, x4={0:0}] [L594] COND FALSE !(S || 1 != pc1 || __VERIFIER_nondet_int()) [L600] COND FALSE !(\read(*garbage)) VAL [S={0:0}, garbage={0:0}, pc1=1, pc4=5, res4=0, t1={0:0}, t4={6:0}, x1={6:0}, x4={0:0}] [L605] S = ((void *)0) [L606] t1 = ((void *)0) [L607] x1 = ((void *)0) [L608] t4 = ((void *)0) [L609] x4 = ((void *)0) [L610] return !!garbage; VAL [S={0:0}, \result=0, garbage={0:0}, pc1=1, pc4=5, res4=0, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 56 locations, 20 error locations. Started 1 CEGAR loops. OverallTime: 21.0s, OverallIterations: 26, TraceHistogramMax: 11, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 8.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4988 SdHoareTripleChecker+Valid, 6.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4988 mSDsluCounter, 12819 SdHoareTripleChecker+Invalid, 5.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10285 mSDsCounter, 313 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3552 IncrementalHoareTripleChecker+Invalid, 3865 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 313 mSolverCounterUnsat, 2534 mSDtfsCounter, 3552 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1703 GetRequests, 1479 SyntacticMatches, 0 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12882occurred in iteration=25, InterpolantAutomatonStates: 233, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 25 MinimizatonAttempts, 4334 StatesRemovedByMinimization, 24 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 940 NumberOfCodeBlocks, 940 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 1592 ConstructedInterpolants, 0 QuantifiedInterpolants, 7688 SizeOfPredicates, 72 NumberOfNonLiveVariables, 2889 ConjunctsInSsa, 166 ConjunctsInUnsatCore, 42 InterpolantComputations, 8 PerfectInterpolantSequences, 1644/2860 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-29 00:29:45,388 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c886b976-abe3-44da-9c4b-897bbe22181c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample