./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-examples/relax-2-2.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_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-examples/relax-2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 56e9aa9f750ced23bf75100b2ff89e86c96f8abe4883dfab569153879bc59aef --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:22:59,433 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:22:59,495 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-29 06:22:59,501 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:22:59,501 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:22:59,523 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:22:59,524 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:22:59,525 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:22:59,525 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 06:22:59,526 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 06:22:59,526 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 06:22:59,527 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 06:22:59,528 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:22:59,528 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:22:59,529 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:22:59,529 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:22:59,530 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 06:22:59,530 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 06:22:59,531 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 06:22:59,531 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:22:59,532 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 06:22:59,537 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 06:22:59,537 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 06:22:59,537 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 06:22:59,538 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 06:22:59,538 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 06:22:59,538 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 06:22:59,539 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:22:59,539 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:22:59,540 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:22:59,540 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 06:22:59,540 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 06:22:59,541 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:22:59,541 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:22:59,541 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 06:22:59,541 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 06:22:59,542 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 06:22:59,542 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 06:22:59,542 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 06:22:59,542 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 06:22:59,542 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 06:22:59,543 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_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 56e9aa9f750ced23bf75100b2ff89e86c96f8abe4883dfab569153879bc59aef [2023-11-29 06:22:59,757 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:22:59,780 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:22:59,782 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:22:59,783 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:22:59,784 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:22:59,785 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/array-examples/relax-2-2.i [2023-11-29 06:23:02,554 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:23:02,773 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:23:02,773 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/sv-benchmarks/c/array-examples/relax-2-2.i [2023-11-29 06:23:02,787 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/data/aef0dd204/2531cc23b15d4ab88d7f67736888953b/FLAGc5503db78 [2023-11-29 06:23:02,802 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/data/aef0dd204/2531cc23b15d4ab88d7f67736888953b [2023-11-29 06:23:02,804 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:23:02,806 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:23:02,808 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:23:02,808 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:23:02,813 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:23:02,814 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:23:02" (1/1) ... [2023-11-29 06:23:02,815 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@320101b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:02, skipping insertion in model container [2023-11-29 06:23:02,815 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:23:02" (1/1) ... [2023-11-29 06:23:02,868 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:23:03,152 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:23:03,162 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 06:23:03,206 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:23:03,236 INFO L206 MainTranslator]: Completed translation [2023-11-29 06:23:03,237 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:03 WrapperNode [2023-11-29 06:23:03,237 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:23:03,238 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 06:23:03,238 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 06:23:03,238 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 06:23:03,246 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:03" (1/1) ... [2023-11-29 06:23:03,260 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:03" (1/1) ... [2023-11-29 06:23:03,289 INFO L138 Inliner]: procedures = 120, calls = 29, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 157 [2023-11-29 06:23:03,289 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 06:23:03,290 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 06:23:03,290 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 06:23:03,290 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 06:23:03,302 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:03" (1/1) ... [2023-11-29 06:23:03,303 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:03" (1/1) ... [2023-11-29 06:23:03,307 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:03" (1/1) ... [2023-11-29 06:23:03,319 INFO L175 MemorySlicer]: Split 14 memory accesses to 3 slices as follows [2, 6, 6]. 43 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2023-11-29 06:23:03,320 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:03" (1/1) ... [2023-11-29 06:23:03,320 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:03" (1/1) ... [2023-11-29 06:23:03,328 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:03" (1/1) ... [2023-11-29 06:23:03,332 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:03" (1/1) ... [2023-11-29 06:23:03,335 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:03" (1/1) ... [2023-11-29 06:23:03,336 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:03" (1/1) ... [2023-11-29 06:23:03,340 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 06:23:03,341 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 06:23:03,342 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 06:23:03,342 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 06:23:03,343 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:03" (1/1) ... [2023-11-29 06:23:03,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:23:03,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:23:03,372 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 06:23:03,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 06:23:03,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 06:23:03,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 06:23:03,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 06:23:03,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-29 06:23:03,398 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-29 06:23:03,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 06:23:03,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 06:23:03,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 06:23:03,399 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 06:23:03,399 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 06:23:03,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 06:23:03,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 06:23:03,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 06:23:03,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 06:23:03,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 06:23:03,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 06:23:03,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 06:23:03,509 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 06:23:03,510 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 06:23:03,805 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 06:23:03,830 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 06:23:03,830 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-29 06:23:03,830 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:23:03 BoogieIcfgContainer [2023-11-29 06:23:03,831 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 06:23:03,833 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 06:23:03,833 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 06:23:03,836 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 06:23:03,837 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:23:02" (1/3) ... [2023-11-29 06:23:03,837 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a74647a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:23:03, skipping insertion in model container [2023-11-29 06:23:03,837 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:03" (2/3) ... [2023-11-29 06:23:03,838 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a74647a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:23:03, skipping insertion in model container [2023-11-29 06:23:03,838 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:23:03" (3/3) ... [2023-11-29 06:23:03,839 INFO L112 eAbstractionObserver]: Analyzing ICFG relax-2-2.i [2023-11-29 06:23:03,857 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 06:23:03,857 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2023-11-29 06:23:03,896 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 06:23:03,901 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;@310a9eec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 06:23:03,901 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2023-11-29 06:23:03,905 INFO L276 IsEmpty]: Start isEmpty. Operand has 93 states, 57 states have (on average 1.894736842105263) internal successors, (108), 83 states have internal predecessors, (108), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-29 06:23:03,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-29 06:23:03,911 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:23:03,912 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:23:03,912 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:23:03,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:23:03,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1498216540, now seen corresponding path program 1 times [2023-11-29 06:23:03,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:23:03,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221072337] [2023-11-29 06:23:03,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:23:03,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:23:04,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:04,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:23:04,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:04,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-29 06:23:04,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:04,099 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 06:23:04,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:23:04,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221072337] [2023-11-29 06:23:04,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221072337] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:23:04,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:23:04,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:23:04,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442066884] [2023-11-29 06:23:04,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:23:04,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 06:23:04,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:23:04,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 06:23:04,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 06:23:04,139 INFO L87 Difference]: Start difference. First operand has 93 states, 57 states have (on average 1.894736842105263) internal successors, (108), 83 states have internal predecessors, (108), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 06:23:04,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:23:04,169 INFO L93 Difference]: Finished difference Result 92 states and 113 transitions. [2023-11-29 06:23:04,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 06:23:04,172 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14 [2023-11-29 06:23:04,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:23:04,180 INFO L225 Difference]: With dead ends: 92 [2023-11-29 06:23:04,181 INFO L226 Difference]: Without dead ends: 91 [2023-11-29 06:23:04,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 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 06:23:04,186 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:23:04,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 108 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:23:04,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-11-29 06:23:04,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2023-11-29 06:23:04,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 56 states have (on average 1.75) internal successors, (98), 81 states have internal predecessors, (98), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-29 06:23:04,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 112 transitions. [2023-11-29 06:23:04,227 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 112 transitions. Word has length 14 [2023-11-29 06:23:04,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:23:04,227 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 112 transitions. [2023-11-29 06:23:04,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 06:23:04,228 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 112 transitions. [2023-11-29 06:23:04,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-29 06:23:04,229 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:23:04,229 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:23:04,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 06:23:04,230 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:23:04,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:23:04,230 INFO L85 PathProgramCache]: Analyzing trace with hash -2038427876, now seen corresponding path program 1 times [2023-11-29 06:23:04,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:23:04,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630604977] [2023-11-29 06:23:04,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:23:04,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:23:04,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:04,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:23:04,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:04,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-29 06:23:04,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:04,408 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 06:23:04,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:23:04,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630604977] [2023-11-29 06:23:04,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630604977] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:23:04,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:23:04,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:23:04,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893282092] [2023-11-29 06:23:04,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:23:04,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:23:04,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:23:04,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:23:04,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:23:04,412 INFO L87 Difference]: Start difference. First operand 91 states and 112 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 06:23:04,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:23:04,479 INFO L93 Difference]: Finished difference Result 86 states and 107 transitions. [2023-11-29 06:23:04,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:23:04,479 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2023-11-29 06:23:04,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:23:04,481 INFO L225 Difference]: With dead ends: 86 [2023-11-29 06:23:04,481 INFO L226 Difference]: Without dead ends: 86 [2023-11-29 06:23:04,482 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 06:23:04,483 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 81 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:23:04,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 91 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:23:04,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-11-29 06:23:04,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2023-11-29 06:23:04,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 56 states have (on average 1.6607142857142858) internal successors, (93), 76 states have internal predecessors, (93), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-29 06:23:04,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 107 transitions. [2023-11-29 06:23:04,495 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 107 transitions. Word has length 14 [2023-11-29 06:23:04,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:23:04,497 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 107 transitions. [2023-11-29 06:23:04,497 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 06:23:04,497 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 107 transitions. [2023-11-29 06:23:04,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-29 06:23:04,498 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:23:04,498 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:23:04,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 06:23:04,499 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:23:04,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:23:04,499 INFO L85 PathProgramCache]: Analyzing trace with hash -2038427875, now seen corresponding path program 1 times [2023-11-29 06:23:04,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:23:04,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988569331] [2023-11-29 06:23:04,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:23:04,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:23:04,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:04,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:23:04,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:04,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-29 06:23:04,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:04,928 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:23:04,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:23:04,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988569331] [2023-11-29 06:23:04,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988569331] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:23:04,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080925146] [2023-11-29 06:23:04,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:23:04,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:23:04,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:23:04,934 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:23:04,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 06:23:05,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:05,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 06:23:05,025 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:23:05,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-29 06:23:05,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:23:05,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-29 06:23:05,211 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:23:05,211 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:23:05,305 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 06:23:05,448 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:23:05,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080925146] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:23:05,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:23:05,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-11-29 06:23:05,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092611094] [2023-11-29 06:23:05,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:23:05,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 06:23:05,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:23:05,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 06:23:05,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-29 06:23:05,451 INFO L87 Difference]: Start difference. First operand 86 states and 107 transitions. Second operand has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 10 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 06:23:05,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:23:05,866 INFO L93 Difference]: Finished difference Result 91 states and 114 transitions. [2023-11-29 06:23:05,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 06:23:05,868 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 10 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 14 [2023-11-29 06:23:05,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:23:05,869 INFO L225 Difference]: With dead ends: 91 [2023-11-29 06:23:05,869 INFO L226 Difference]: Without dead ends: 91 [2023-11-29 06:23:05,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2023-11-29 06:23:05,871 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 186 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:23:05,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 390 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 06:23:05,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-11-29 06:23:05,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 90. [2023-11-29 06:23:05,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 60 states have (on average 1.65) internal successors, (99), 80 states have internal predecessors, (99), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-29 06:23:05,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 113 transitions. [2023-11-29 06:23:05,880 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 113 transitions. Word has length 14 [2023-11-29 06:23:05,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:23:05,881 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 113 transitions. [2023-11-29 06:23:05,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 10 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 06:23:05,881 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 113 transitions. [2023-11-29 06:23:05,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-29 06:23:05,882 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:23:05,882 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:23:05,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 06:23:06,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:23:06,083 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:23:06,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:23:06,083 INFO L85 PathProgramCache]: Analyzing trace with hash -424152504, now seen corresponding path program 1 times [2023-11-29 06:23:06,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:23:06,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354137441] [2023-11-29 06:23:06,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:23:06,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:23:06,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:06,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:23:06,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:06,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-29 06:23:06,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:06,136 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 06:23:06,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:23:06,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354137441] [2023-11-29 06:23:06,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354137441] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:23:06,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:23:06,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:23:06,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033948567] [2023-11-29 06:23:06,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:23:06,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:23:06,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:23:06,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:23:06,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:23:06,138 INFO L87 Difference]: Start difference. First operand 90 states and 113 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 06:23:06,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:23:06,183 INFO L93 Difference]: Finished difference Result 85 states and 108 transitions. [2023-11-29 06:23:06,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:23:06,185 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2023-11-29 06:23:06,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:23:06,186 INFO L225 Difference]: With dead ends: 85 [2023-11-29 06:23:06,186 INFO L226 Difference]: Without dead ends: 85 [2023-11-29 06:23:06,186 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 06:23:06,187 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 74 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:23:06,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 91 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:23:06,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-11-29 06:23:06,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2023-11-29 06:23:06,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 60 states have (on average 1.5666666666666667) internal successors, (94), 75 states have internal predecessors, (94), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-29 06:23:06,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 108 transitions. [2023-11-29 06:23:06,196 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 108 transitions. Word has length 16 [2023-11-29 06:23:06,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:23:06,196 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 108 transitions. [2023-11-29 06:23:06,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 06:23:06,196 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 108 transitions. [2023-11-29 06:23:06,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-29 06:23:06,197 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:23:06,197 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:23:06,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 06:23:06,197 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:23:06,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:23:06,198 INFO L85 PathProgramCache]: Analyzing trace with hash -424152503, now seen corresponding path program 1 times [2023-11-29 06:23:06,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:23:06,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383574587] [2023-11-29 06:23:06,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:23:06,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:23:06,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:06,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:23:06,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:06,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-29 06:23:06,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:06,423 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:23:06,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:23:06,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383574587] [2023-11-29 06:23:06,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383574587] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:23:06,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:23:06,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 06:23:06,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226952814] [2023-11-29 06:23:06,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:23:06,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 06:23:06,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:23:06,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 06:23:06,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:23:06,426 INFO L87 Difference]: Start difference. First operand 85 states and 108 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 06:23:06,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:23:06,707 INFO L93 Difference]: Finished difference Result 88 states and 112 transitions. [2023-11-29 06:23:06,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 06:23:06,709 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2023-11-29 06:23:06,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:23:06,710 INFO L225 Difference]: With dead ends: 88 [2023-11-29 06:23:06,710 INFO L226 Difference]: Without dead ends: 88 [2023-11-29 06:23:06,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-29 06:23:06,712 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 83 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:23:06,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 269 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 06:23:06,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-11-29 06:23:06,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2023-11-29 06:23:06,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 62 states have (on average 1.564516129032258) internal successors, (97), 77 states have internal predecessors, (97), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-29 06:23:06,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 111 transitions. [2023-11-29 06:23:06,720 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 111 transitions. Word has length 16 [2023-11-29 06:23:06,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:23:06,720 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 111 transitions. [2023-11-29 06:23:06,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 06:23:06,720 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 111 transitions. [2023-11-29 06:23:06,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-29 06:23:06,721 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:23:06,721 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:23:06,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 06:23:06,722 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:23:06,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:23:06,722 INFO L85 PathProgramCache]: Analyzing trace with hash 411528305, now seen corresponding path program 1 times [2023-11-29 06:23:06,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:23:06,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237291850] [2023-11-29 06:23:06,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:23:06,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:23:06,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:07,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:23:07,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:07,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-29 06:23:07,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:07,233 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:23:07,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:23:07,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237291850] [2023-11-29 06:23:07,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237291850] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:23:07,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565343754] [2023-11-29 06:23:07,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:23:07,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:23:07,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:23:07,236 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:23:07,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 06:23:07,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:07,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 06:23:07,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:23:07,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2023-11-29 06:23:07,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:23:07,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 1 [2023-11-29 06:23:07,647 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:23:07,647 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:23:07,990 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:23:07,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565343754] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:23:07,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:23:07,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-11-29 06:23:07,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858178705] [2023-11-29 06:23:07,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:23:07,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 06:23:07,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:23:07,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 06:23:07,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2023-11-29 06:23:07,993 INFO L87 Difference]: Start difference. First operand 87 states and 111 transitions. Second operand has 19 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-29 06:23:09,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:23:09,359 INFO L93 Difference]: Finished difference Result 148 states and 192 transitions. [2023-11-29 06:23:09,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 06:23:09,360 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 18 [2023-11-29 06:23:09,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:23:09,362 INFO L225 Difference]: With dead ends: 148 [2023-11-29 06:23:09,362 INFO L226 Difference]: Without dead ends: 148 [2023-11-29 06:23:09,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=158, Invalid=492, Unknown=0, NotChecked=0, Total=650 [2023-11-29 06:23:09,363 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 862 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:23:09,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 603 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 06:23:09,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-11-29 06:23:09,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 84. [2023-11-29 06:23:09,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 60 states have (on average 1.55) internal successors, (93), 74 states have internal predecessors, (93), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-29 06:23:09,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 107 transitions. [2023-11-29 06:23:09,372 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 107 transitions. Word has length 18 [2023-11-29 06:23:09,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:23:09,372 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 107 transitions. [2023-11-29 06:23:09,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-29 06:23:09,373 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 107 transitions. [2023-11-29 06:23:09,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-29 06:23:09,373 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:23:09,373 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:23:09,379 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 06:23:09,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 06:23:09,575 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:23:09,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:23:09,576 INFO L85 PathProgramCache]: Analyzing trace with hash 663115607, now seen corresponding path program 1 times [2023-11-29 06:23:09,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:23:09,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628142878] [2023-11-29 06:23:09,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:23:09,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:23:09,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:09,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:23:09,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:09,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-29 06:23:09,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:09,926 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:23:09,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:23:09,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628142878] [2023-11-29 06:23:09,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628142878] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:23:09,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492827511] [2023-11-29 06:23:09,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:23:09,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:23:09,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:23:09,928 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:23:09,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 06:23:10,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:10,047 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 06:23:10,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:23:10,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-29 06:23:10,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:23:10,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-29 06:23:10,294 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:23:10,294 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:23:10,485 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 06:23:10,591 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:23:10,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492827511] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:23:10,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:23:10,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-11-29 06:23:10,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582787300] [2023-11-29 06:23:10,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:23:10,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 06:23:10,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:23:10,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 06:23:10,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2023-11-29 06:23:10,594 INFO L87 Difference]: Start difference. First operand 84 states and 107 transitions. Second operand has 19 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 06:23:11,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:23:11,413 INFO L93 Difference]: Finished difference Result 97 states and 124 transitions. [2023-11-29 06:23:11,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 06:23:11,414 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 18 [2023-11-29 06:23:11,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:23:11,415 INFO L225 Difference]: With dead ends: 97 [2023-11-29 06:23:11,415 INFO L226 Difference]: Without dead ends: 97 [2023-11-29 06:23:11,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=178, Invalid=634, Unknown=0, NotChecked=0, Total=812 [2023-11-29 06:23:11,417 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 118 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 06:23:11,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 690 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 06:23:11,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-11-29 06:23:11,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 92. [2023-11-29 06:23:11,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 68 states have (on average 1.5441176470588236) internal successors, (105), 82 states have internal predecessors, (105), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-29 06:23:11,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 119 transitions. [2023-11-29 06:23:11,424 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 119 transitions. Word has length 18 [2023-11-29 06:23:11,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:23:11,431 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 119 transitions. [2023-11-29 06:23:11,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 06:23:11,431 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 119 transitions. [2023-11-29 06:23:11,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-29 06:23:11,432 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:23:11,432 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:23:11,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 06:23:11,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-29 06:23:11,634 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:23:11,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:23:11,635 INFO L85 PathProgramCache]: Analyzing trace with hash -135016666, now seen corresponding path program 1 times [2023-11-29 06:23:11,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:23:11,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423850754] [2023-11-29 06:23:11,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:23:11,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:23:11,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:11,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:23:11,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:11,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-29 06:23:11,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:11,775 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 06:23:11,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:23:11,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423850754] [2023-11-29 06:23:11,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423850754] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:23:11,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:23:11,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:23:11,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488363944] [2023-11-29 06:23:11,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:23:11,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:23:11,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:23:11,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:23:11,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:23:11,778 INFO L87 Difference]: Start difference. First operand 92 states and 119 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 06:23:11,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:23:11,843 INFO L93 Difference]: Finished difference Result 91 states and 118 transitions. [2023-11-29 06:23:11,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:23:11,844 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2023-11-29 06:23:11,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:23:11,845 INFO L225 Difference]: With dead ends: 91 [2023-11-29 06:23:11,845 INFO L226 Difference]: Without dead ends: 91 [2023-11-29 06:23:11,845 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 06:23:11,846 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 87 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:23:11,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 141 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:23:11,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-11-29 06:23:11,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2023-11-29 06:23:11,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 68 states have (on average 1.5294117647058822) internal successors, (104), 81 states have internal predecessors, (104), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-29 06:23:11,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 118 transitions. [2023-11-29 06:23:11,852 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 118 transitions. Word has length 19 [2023-11-29 06:23:11,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:23:11,853 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 118 transitions. [2023-11-29 06:23:11,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 06:23:11,853 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 118 transitions. [2023-11-29 06:23:11,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-29 06:23:11,854 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:23:11,854 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:23:11,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 06:23:11,854 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:23:11,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:23:11,855 INFO L85 PathProgramCache]: Analyzing trace with hash -135016665, now seen corresponding path program 1 times [2023-11-29 06:23:11,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:23:11,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931271677] [2023-11-29 06:23:11,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:23:11,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:23:11,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:11,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:23:11,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:11,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-29 06:23:11,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:11,982 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 06:23:11,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:23:11,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931271677] [2023-11-29 06:23:11,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931271677] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:23:11,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:23:11,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:23:11,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593679489] [2023-11-29 06:23:11,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:23:11,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:23:11,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:23:11,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:23:11,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:23:11,984 INFO L87 Difference]: Start difference. First operand 91 states and 118 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 06:23:12,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:23:12,102 INFO L93 Difference]: Finished difference Result 115 states and 150 transitions. [2023-11-29 06:23:12,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:23:12,103 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2023-11-29 06:23:12,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:23:12,104 INFO L225 Difference]: With dead ends: 115 [2023-11-29 06:23:12,104 INFO L226 Difference]: Without dead ends: 115 [2023-11-29 06:23:12,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:23:12,105 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 33 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:23:12,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 319 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:23:12,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-11-29 06:23:12,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 106. [2023-11-29 06:23:12,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 82 states have (on average 1.5121951219512195) internal successors, (124), 95 states have internal predecessors, (124), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-29 06:23:12,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 140 transitions. [2023-11-29 06:23:12,112 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 140 transitions. Word has length 19 [2023-11-29 06:23:12,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:23:12,112 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 140 transitions. [2023-11-29 06:23:12,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 06:23:12,113 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 140 transitions. [2023-11-29 06:23:12,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-29 06:23:12,114 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:23:12,114 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:23:12,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 06:23:12,114 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:23:12,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:23:12,115 INFO L85 PathProgramCache]: Analyzing trace with hash 2001486847, now seen corresponding path program 1 times [2023-11-29 06:23:12,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:23:12,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849029206] [2023-11-29 06:23:12,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:23:12,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:23:12,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:12,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:23:12,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:12,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-29 06:23:12,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:12,408 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 06:23:12,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:23:12,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849029206] [2023-11-29 06:23:12,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849029206] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:23:12,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492896432] [2023-11-29 06:23:12,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:23:12,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:23:12,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:23:12,411 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:23:12,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 06:23:12,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:12,502 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 06:23:12,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:23:12,556 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 06:23:12,557 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:23:12,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492896432] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:23:12,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:23:12,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 11 [2023-11-29 06:23:12,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177717367] [2023-11-29 06:23:12,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:23:12,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:23:12,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:23:12,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:23:12,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-29 06:23:12,559 INFO L87 Difference]: Start difference. First operand 106 states and 140 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 06:23:12,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:23:12,709 INFO L93 Difference]: Finished difference Result 146 states and 186 transitions. [2023-11-29 06:23:12,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:23:12,710 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2023-11-29 06:23:12,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:23:12,711 INFO L225 Difference]: With dead ends: 146 [2023-11-29 06:23:12,711 INFO L226 Difference]: Without dead ends: 146 [2023-11-29 06:23:12,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-11-29 06:23:12,712 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 25 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:23:12,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 473 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:23:12,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2023-11-29 06:23:12,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 123. [2023-11-29 06:23:12,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 98 states have (on average 1.4489795918367347) internal successors, (142), 111 states have internal predecessors, (142), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 06:23:12,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 160 transitions. [2023-11-29 06:23:12,719 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 160 transitions. Word has length 21 [2023-11-29 06:23:12,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:23:12,719 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 160 transitions. [2023-11-29 06:23:12,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 06:23:12,719 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 160 transitions. [2023-11-29 06:23:12,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-29 06:23:12,720 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:23:12,721 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:23:12,726 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 06:23:12,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 06:23:12,921 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:23:12,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:23:12,922 INFO L85 PathProgramCache]: Analyzing trace with hash 140469154, now seen corresponding path program 1 times [2023-11-29 06:23:12,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:23:12,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238672263] [2023-11-29 06:23:12,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:23:12,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:23:12,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:13,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:23:13,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:13,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-29 06:23:13,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:13,036 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 06:23:13,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:23:13,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238672263] [2023-11-29 06:23:13,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238672263] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:23:13,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060677870] [2023-11-29 06:23:13,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:23:13,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:23:13,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:23:13,038 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:23:13,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 06:23:13,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:13,121 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 06:23:13,123 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:23:13,213 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 06:23:13,214 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:23:13,266 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 22 treesize of output 18 [2023-11-29 06:23:13,280 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 06:23:13,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060677870] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:23:13,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:23:13,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-29 06:23:13,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278965418] [2023-11-29 06:23:13,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:23:13,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 06:23:13,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:23:13,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 06:23:13,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-29 06:23:13,282 INFO L87 Difference]: Start difference. First operand 123 states and 160 transitions. Second operand has 11 states, 10 states have (on average 3.1) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 06:23:13,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:23:13,492 INFO L93 Difference]: Finished difference Result 142 states and 182 transitions. [2023-11-29 06:23:13,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 06:23:13,493 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.1) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2023-11-29 06:23:13,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:23:13,494 INFO L225 Difference]: With dead ends: 142 [2023-11-29 06:23:13,494 INFO L226 Difference]: Without dead ends: 142 [2023-11-29 06:23:13,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2023-11-29 06:23:13,495 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 255 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:23:13,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 296 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 06:23:13,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-11-29 06:23:13,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 125. [2023-11-29 06:23:13,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 100 states have (on average 1.45) internal successors, (145), 113 states have internal predecessors, (145), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 06:23:13,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 163 transitions. [2023-11-29 06:23:13,501 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 163 transitions. Word has length 23 [2023-11-29 06:23:13,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:23:13,502 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 163 transitions. [2023-11-29 06:23:13,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.1) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 06:23:13,502 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 163 transitions. [2023-11-29 06:23:13,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-29 06:23:13,503 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:23:13,503 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:23:13,509 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 06:23:13,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 06:23:13,709 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:23:13,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:23:13,709 INFO L85 PathProgramCache]: Analyzing trace with hash 219359071, now seen corresponding path program 1 times [2023-11-29 06:23:13,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:23:13,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312288635] [2023-11-29 06:23:13,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:23:13,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:23:13,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:13,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:23:13,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:13,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-29 06:23:13,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:13,930 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 06:23:13,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:23:13,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312288635] [2023-11-29 06:23:13,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312288635] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:23:13,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102996127] [2023-11-29 06:23:13,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:23:13,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:23:13,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:23:13,932 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:23:13,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 06:23:14,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:14,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 06:23:14,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:23:14,151 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 06:23:14,151 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:23:14,416 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 06:23:14,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102996127] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:23:14,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:23:14,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 19 [2023-11-29 06:23:14,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967921657] [2023-11-29 06:23:14,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:23:14,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 06:23:14,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:23:14,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 06:23:14,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2023-11-29 06:23:14,418 INFO L87 Difference]: Start difference. First operand 125 states and 163 transitions. Second operand has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 06:23:15,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:23:15,249 INFO L93 Difference]: Finished difference Result 313 states and 398 transitions. [2023-11-29 06:23:15,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 06:23:15,249 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2023-11-29 06:23:15,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:23:15,251 INFO L225 Difference]: With dead ends: 313 [2023-11-29 06:23:15,251 INFO L226 Difference]: Without dead ends: 313 [2023-11-29 06:23:15,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=220, Invalid=772, Unknown=0, NotChecked=0, Total=992 [2023-11-29 06:23:15,253 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 740 mSDsluCounter, 994 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 06:23:15,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [750 Valid, 1100 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 06:23:15,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2023-11-29 06:23:15,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 177. [2023-11-29 06:23:15,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 150 states have (on average 1.4666666666666666) internal successors, (220), 163 states have internal predecessors, (220), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-29 06:23:15,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 242 transitions. [2023-11-29 06:23:15,265 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 242 transitions. Word has length 24 [2023-11-29 06:23:15,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:23:15,265 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 242 transitions. [2023-11-29 06:23:15,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 06:23:15,265 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 242 transitions. [2023-11-29 06:23:15,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-29 06:23:15,266 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:23:15,267 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:23:15,272 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 06:23:15,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:23:15,467 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:23:15,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:23:15,468 INFO L85 PathProgramCache]: Analyzing trace with hash 59576483, now seen corresponding path program 1 times [2023-11-29 06:23:15,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:23:15,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37034478] [2023-11-29 06:23:15,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:23:15,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:23:15,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:15,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:23:15,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:15,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-29 06:23:15,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:15,531 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 06:23:15,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:23:15,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37034478] [2023-11-29 06:23:15,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37034478] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:23:15,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:23:15,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:23:15,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170694765] [2023-11-29 06:23:15,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:23:15,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:23:15,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:23:15,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:23:15,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:23:15,533 INFO L87 Difference]: Start difference. First operand 177 states and 242 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 06:23:15,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:23:15,595 INFO L93 Difference]: Finished difference Result 176 states and 239 transitions. [2023-11-29 06:23:15,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:23:15,595 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2023-11-29 06:23:15,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:23:15,597 INFO L225 Difference]: With dead ends: 176 [2023-11-29 06:23:15,597 INFO L226 Difference]: Without dead ends: 176 [2023-11-29 06:23:15,597 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 06:23:15,598 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 85 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:23:15,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 143 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:23:15,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2023-11-29 06:23:15,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2023-11-29 06:23:15,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 150 states have (on average 1.4466666666666668) internal successors, (217), 162 states have internal predecessors, (217), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-29 06:23:15,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 239 transitions. [2023-11-29 06:23:15,605 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 239 transitions. Word has length 24 [2023-11-29 06:23:15,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:23:15,606 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 239 transitions. [2023-11-29 06:23:15,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 06:23:15,606 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 239 transitions. [2023-11-29 06:23:15,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-29 06:23:15,607 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:23:15,607 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:23:15,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 06:23:15,607 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:23:15,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:23:15,608 INFO L85 PathProgramCache]: Analyzing trace with hash 59576484, now seen corresponding path program 1 times [2023-11-29 06:23:15,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:23:15,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019033725] [2023-11-29 06:23:15,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:23:15,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:23:15,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:15,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:23:15,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:15,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-29 06:23:15,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:15,767 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 06:23:15,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:23:15,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019033725] [2023-11-29 06:23:15,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019033725] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:23:15,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184956470] [2023-11-29 06:23:15,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:23:15,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:23:15,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:23:15,769 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:23:15,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 06:23:15,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:15,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 06:23:15,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:23:15,861 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 8 treesize of output 1 [2023-11-29 06:23:15,943 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 06:23:15,943 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:23:16,047 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 06:23:16,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184956470] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 06:23:16,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:23:16,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 14 [2023-11-29 06:23:16,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715940547] [2023-11-29 06:23:16,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:23:16,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:23:16,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:23:16,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:23:16,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-11-29 06:23:16,049 INFO L87 Difference]: Start difference. First operand 176 states and 239 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 06:23:16,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:23:16,248 INFO L93 Difference]: Finished difference Result 215 states and 282 transitions. [2023-11-29 06:23:16,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:23:16,249 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2023-11-29 06:23:16,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:23:16,250 INFO L225 Difference]: With dead ends: 215 [2023-11-29 06:23:16,250 INFO L226 Difference]: Without dead ends: 215 [2023-11-29 06:23:16,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2023-11-29 06:23:16,251 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 247 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:23:16,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 288 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:23:16,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2023-11-29 06:23:16,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 179. [2023-11-29 06:23:16,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 153 states have (on average 1.4379084967320261) internal successors, (220), 165 states have internal predecessors, (220), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-29 06:23:16,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 242 transitions. [2023-11-29 06:23:16,259 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 242 transitions. Word has length 24 [2023-11-29 06:23:16,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:23:16,259 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 242 transitions. [2023-11-29 06:23:16,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 06:23:16,260 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 242 transitions. [2023-11-29 06:23:16,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-29 06:23:16,261 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:23:16,261 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:23:16,266 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 06:23:16,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:23:16,461 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:23:16,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:23:16,462 INFO L85 PathProgramCache]: Analyzing trace with hash 617231563, now seen corresponding path program 1 times [2023-11-29 06:23:16,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:23:16,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338812976] [2023-11-29 06:23:16,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:23:16,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:23:16,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:16,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:23:16,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:16,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-29 06:23:16,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:16,569 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 06:23:16,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:23:16,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338812976] [2023-11-29 06:23:16,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338812976] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:23:16,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:23:16,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:23:16,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396668006] [2023-11-29 06:23:16,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:23:16,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:23:16,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:23:16,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:23:16,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:23:16,571 INFO L87 Difference]: Start difference. First operand 179 states and 242 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 06:23:16,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:23:16,656 INFO L93 Difference]: Finished difference Result 191 states and 253 transitions. [2023-11-29 06:23:16,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 06:23:16,656 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2023-11-29 06:23:16,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:23:16,658 INFO L225 Difference]: With dead ends: 191 [2023-11-29 06:23:16,658 INFO L226 Difference]: Without dead ends: 191 [2023-11-29 06:23:16,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:23:16,659 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 23 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:23:16,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 417 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:23:16,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2023-11-29 06:23:16,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 183. [2023-11-29 06:23:16,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 156 states have (on average 1.4294871794871795) internal successors, (223), 168 states have internal predecessors, (223), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-29 06:23:16,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 245 transitions. [2023-11-29 06:23:16,667 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 245 transitions. Word has length 27 [2023-11-29 06:23:16,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:23:16,667 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 245 transitions. [2023-11-29 06:23:16,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 06:23:16,667 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 245 transitions. [2023-11-29 06:23:16,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-29 06:23:16,668 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:23:16,668 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:23:16,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 06:23:16,669 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:23:16,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:23:16,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1920876324, now seen corresponding path program 2 times [2023-11-29 06:23:16,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:23:16,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064269524] [2023-11-29 06:23:16,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:23:16,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:23:16,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:23:16,690 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 06:23:16,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:23:16,724 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 06:23:16,724 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 06:23:16,726 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK (25 of 26 remaining) [2023-11-29 06:23:16,727 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 26 remaining) [2023-11-29 06:23:16,728 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 26 remaining) [2023-11-29 06:23:16,728 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 26 remaining) [2023-11-29 06:23:16,728 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 26 remaining) [2023-11-29 06:23:16,728 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 26 remaining) [2023-11-29 06:23:16,728 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 26 remaining) [2023-11-29 06:23:16,728 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 26 remaining) [2023-11-29 06:23:16,728 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 26 remaining) [2023-11-29 06:23:16,728 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 26 remaining) [2023-11-29 06:23:16,729 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 26 remaining) [2023-11-29 06:23:16,729 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 26 remaining) [2023-11-29 06:23:16,729 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 26 remaining) [2023-11-29 06:23:16,729 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 26 remaining) [2023-11-29 06:23:16,729 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 26 remaining) [2023-11-29 06:23:16,730 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 26 remaining) [2023-11-29 06:23:16,730 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 26 remaining) [2023-11-29 06:23:16,730 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 26 remaining) [2023-11-29 06:23:16,730 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 26 remaining) [2023-11-29 06:23:16,730 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 26 remaining) [2023-11-29 06:23:16,730 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 26 remaining) [2023-11-29 06:23:16,730 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 26 remaining) [2023-11-29 06:23:16,731 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 26 remaining) [2023-11-29 06:23:16,731 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 26 remaining) [2023-11-29 06:23:16,731 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 26 remaining) [2023-11-29 06:23:16,731 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 26 remaining) [2023-11-29 06:23:16,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 06:23:16,734 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:23:16,737 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 06:23:16,753 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-11-29 06:23:16,754 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-11-29 06:23:16,760 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 06:23:16 BoogieIcfgContainer [2023-11-29 06:23:16,760 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 06:23:16,761 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 06:23:16,761 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 06:23:16,761 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 06:23:16,761 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:23:03" (3/4) ... [2023-11-29 06:23:16,763 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-29 06:23:16,764 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 06:23:16,765 INFO L158 Benchmark]: Toolchain (without parser) took 13958.88ms. Allocated memory was 163.6MB in the beginning and 197.1MB in the end (delta: 33.6MB). Free memory was 117.8MB in the beginning and 79.2MB in the end (delta: 38.6MB). Peak memory consumption was 74.2MB. Max. memory is 16.1GB. [2023-11-29 06:23:16,765 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 119.5MB. Free memory is still 65.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 06:23:16,765 INFO L158 Benchmark]: CACSL2BoogieTranslator took 429.55ms. Allocated memory is still 163.6MB. Free memory was 117.8MB in the beginning and 98.8MB in the end (delta: 19.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-29 06:23:16,766 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.56ms. Allocated memory is still 163.6MB. Free memory was 98.8MB in the beginning and 96.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 06:23:16,766 INFO L158 Benchmark]: Boogie Preprocessor took 50.58ms. Allocated memory is still 163.6MB. Free memory was 96.3MB in the beginning and 93.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 06:23:16,766 INFO L158 Benchmark]: RCFGBuilder took 489.46ms. Allocated memory is still 163.6MB. Free memory was 93.8MB in the beginning and 113.2MB in the end (delta: -19.5MB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. [2023-11-29 06:23:16,767 INFO L158 Benchmark]: TraceAbstraction took 12926.92ms. Allocated memory was 163.6MB in the beginning and 197.1MB in the end (delta: 33.6MB). Free memory was 113.2MB in the beginning and 80.2MB in the end (delta: 33.0MB). Peak memory consumption was 66.4MB. Max. memory is 16.1GB. [2023-11-29 06:23:16,767 INFO L158 Benchmark]: Witness Printer took 3.66ms. Allocated memory is still 197.1MB. Free memory was 80.2MB in the beginning and 79.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 06:23:16,769 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 119.5MB. Free memory is still 65.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 429.55ms. Allocated memory is still 163.6MB. Free memory was 117.8MB in the beginning and 98.8MB in the end (delta: 19.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.56ms. Allocated memory is still 163.6MB. Free memory was 98.8MB in the beginning and 96.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.58ms. Allocated memory is still 163.6MB. Free memory was 96.3MB in the beginning and 93.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 489.46ms. Allocated memory is still 163.6MB. Free memory was 93.8MB in the beginning and 113.2MB in the end (delta: -19.5MB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. * TraceAbstraction took 12926.92ms. Allocated memory was 163.6MB in the beginning and 197.1MB in the end (delta: 33.6MB). Free memory was 113.2MB in the beginning and 80.2MB in the end (delta: 33.0MB). Peak memory consumption was 66.4MB. Max. memory is 16.1GB. * Witness Printer took 3.66ms. Allocated memory is still 197.1MB. Free memory was 80.2MB in the beginning and 79.2MB in the end (delta: 1.1MB). 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: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - 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: 1128]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1128. Possible FailurePath: [L1130] unsigned long pat_len = __VERIFIER_nondet_ulong(), a_len = __VERIFIER_nondet_ulong(); [L1130] unsigned long pat_len = __VERIFIER_nondet_ulong(), a_len = __VERIFIER_nondet_ulong(); [L1132] CALL assume_abort_if_not(pat_len < 4294967296 / sizeof(int)) VAL [\old(cond)=1] [L5] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L1132] RET assume_abort_if_not(pat_len < 4294967296 / sizeof(int)) VAL [pat_len=-4294967294] [L1133] CALL assume_abort_if_not(a_len < 4294967296 / sizeof(int)) VAL [\old(cond)=1] [L5] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L1133] RET assume_abort_if_not(a_len < 4294967296 / sizeof(int)) VAL [a_len=0, pat_len=-4294967294] [L1134] int *pat=malloc(sizeof(int)*pat_len); [L1135] int *a=malloc(sizeof(int)*a_len); [L1139] int j = 0; VAL [a={-2:0}, a_len=0, j=0, pat={-1:0}, pat_len=-4294967294] [L1139] COND TRUE j < pat_len [L1140] pat[j] = __VERIFIER_nondet_int() [L1139] j++ VAL [a={-2:0}, a_len=0, j=1, pat={-1:0}, pat_len=-4294967294] [L1139] COND TRUE j < pat_len [L1140] pat[j] = __VERIFIER_nondet_int() [L1139] j++ VAL [a={-2:0}, a_len=0, j=2, pat={-1:0}, pat_len=-4294967294] [L1139] COND FALSE !(j < pat_len) VAL [a={-2:0}, a_len=0, j=2, pat={-1:0}, pat_len=-4294967294] [L1142] int j = 0; VAL [a={-2:0}, a_len=0, j=0, pat={-1:0}, pat_len=-4294967294] [L1142] COND FALSE !(j < a_len) VAL [a={-2:0}, a_len=0, j=0, pat={-1:0}, pat_len=-4294967294] [L1147] CALL is_relaxed_prefix(pat, pat_len, a, a_len) [L1106] COND TRUE pat_length>a_length+1 [L1107] return 0; VAL [\old(a_length)=0, \old(pat_length)=2, \result=0, a={-2:0}, a={-2:0}, a_length=0, pat={-1:0}, pat={-1:0}, pat_length=2] [L1147] RET is_relaxed_prefix(pat, pat_len, a, a_len) [L1147] COND FALSE !(is_relaxed_prefix(pat, pat_len, a, a_len)) [L1163] COND FALSE !(pat_len<=a_len+1) [L1176] return 0; VAL [\result=0, a={-2:0}, a_len=0, pat={-1:0}, pat_len=-4294967294] - 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: -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: 18]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 93 locations, 26 error locations. Started 1 CEGAR loops. OverallTime: 12.9s, OverallIterations: 16, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2967 SdHoareTripleChecker+Valid, 3.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2899 mSDsluCounter, 5419 SdHoareTripleChecker+Invalid, 2.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4171 mSDsCounter, 155 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2849 IncrementalHoareTripleChecker+Invalid, 3004 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 155 mSolverCounterUnsat, 1248 mSDtfsCounter, 2849 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 450 GetRequests, 278 SyntacticMatches, 6 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 637 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=183occurred in iteration=15, InterpolantAutomatonStates: 126, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 15 MinimizatonAttempts, 300 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.2s InterpolantComputationTime, 459 NumberOfCodeBlocks, 459 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 526 ConstructedInterpolants, 1 QuantifiedInterpolants, 3630 SizeOfPredicates, 42 NumberOfNonLiveVariables, 705 ConjunctsInSsa, 114 ConjunctsInUnsatCore, 28 InterpolantComputations, 10 PerfectInterpolantSequences, 104/155 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 06:23:16,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally 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_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-examples/relax-2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 56e9aa9f750ced23bf75100b2ff89e86c96f8abe4883dfab569153879bc59aef --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:23:18,741 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:23:18,825 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-29 06:23:18,831 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:23:18,831 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:23:18,860 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:23:18,861 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:23:18,861 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:23:18,862 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 06:23:18,863 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 06:23:18,863 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 06:23:18,864 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 06:23:18,865 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:23:18,865 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:23:18,866 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:23:18,867 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:23:18,867 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 06:23:18,868 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 06:23:18,869 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 06:23:18,869 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:23:18,870 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 06:23:18,870 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 06:23:18,871 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 06:23:18,871 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 06:23:18,872 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 06:23:18,872 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 06:23:18,873 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 06:23:18,873 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 06:23:18,873 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 06:23:18,874 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:23:18,874 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:23:18,875 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:23:18,875 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 06:23:18,875 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 06:23:18,875 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:23:18,876 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:23:18,876 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 06:23:18,876 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 06:23:18,877 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 06:23:18,877 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 06:23:18,877 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 06:23:18,877 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 06:23:18,878 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 06:23:18,878 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 06:23:18,878 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_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 56e9aa9f750ced23bf75100b2ff89e86c96f8abe4883dfab569153879bc59aef [2023-11-29 06:23:19,156 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:23:19,177 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:23:19,179 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:23:19,180 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:23:19,181 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:23:19,182 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/array-examples/relax-2-2.i [2023-11-29 06:23:22,046 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:23:22,254 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:23:22,255 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/sv-benchmarks/c/array-examples/relax-2-2.i [2023-11-29 06:23:22,271 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/data/cba34e4a3/75e63cce9e3840119722bdb6bce07e99/FLAG329d38066 [2023-11-29 06:23:22,285 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/data/cba34e4a3/75e63cce9e3840119722bdb6bce07e99 [2023-11-29 06:23:22,287 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:23:22,288 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:23:22,290 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:23:22,290 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:23:22,294 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:23:22,295 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:23:22" (1/1) ... [2023-11-29 06:23:22,296 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9db446f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:22, skipping insertion in model container [2023-11-29 06:23:22,296 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:23:22" (1/1) ... [2023-11-29 06:23:22,345 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:23:22,598 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:23:22,611 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 06:23:22,651 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:23:22,691 INFO L206 MainTranslator]: Completed translation [2023-11-29 06:23:22,692 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:22 WrapperNode [2023-11-29 06:23:22,692 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:23:22,693 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 06:23:22,693 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 06:23:22,693 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 06:23:22,699 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:22" (1/1) ... [2023-11-29 06:23:22,717 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:22" (1/1) ... [2023-11-29 06:23:22,743 INFO L138 Inliner]: procedures = 123, calls = 29, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 156 [2023-11-29 06:23:22,743 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 06:23:22,744 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 06:23:22,744 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 06:23:22,744 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 06:23:22,753 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:22" (1/1) ... [2023-11-29 06:23:22,753 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:22" (1/1) ... [2023-11-29 06:23:22,757 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:22" (1/1) ... [2023-11-29 06:23:22,772 INFO L175 MemorySlicer]: Split 14 memory accesses to 3 slices as follows [2, 6, 6]. 43 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2023-11-29 06:23:22,772 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:22" (1/1) ... [2023-11-29 06:23:22,773 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:22" (1/1) ... [2023-11-29 06:23:22,782 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:22" (1/1) ... [2023-11-29 06:23:22,787 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:22" (1/1) ... [2023-11-29 06:23:22,789 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:22" (1/1) ... [2023-11-29 06:23:22,791 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:22" (1/1) ... [2023-11-29 06:23:22,795 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 06:23:22,796 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 06:23:22,797 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 06:23:22,797 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 06:23:22,798 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:22" (1/1) ... [2023-11-29 06:23:22,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:23:22,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:23:22,826 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 06:23:22,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 06:23:22,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-29 06:23:22,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-29 06:23:22,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-29 06:23:22,862 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-29 06:23:22,862 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-29 06:23:22,862 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 06:23:22,862 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 06:23:22,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 06:23:22,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 06:23:22,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-29 06:23:22,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-29 06:23:22,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-29 06:23:22,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 06:23:22,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-29 06:23:22,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-29 06:23:22,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 06:23:22,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 06:23:22,986 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 06:23:22,989 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 06:23:23,447 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 06:23:23,473 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 06:23:23,474 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-29 06:23:23,474 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:23:23 BoogieIcfgContainer [2023-11-29 06:23:23,474 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 06:23:23,477 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 06:23:23,477 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 06:23:23,480 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 06:23:23,481 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:23:22" (1/3) ... [2023-11-29 06:23:23,481 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a18d15e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:23:23, skipping insertion in model container [2023-11-29 06:23:23,482 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:23:22" (2/3) ... [2023-11-29 06:23:23,482 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a18d15e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:23:23, skipping insertion in model container [2023-11-29 06:23:23,482 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:23:23" (3/3) ... [2023-11-29 06:23:23,484 INFO L112 eAbstractionObserver]: Analyzing ICFG relax-2-2.i [2023-11-29 06:23:23,511 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 06:23:23,511 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2023-11-29 06:23:23,573 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 06:23:23,589 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;@32286baa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 06:23:23,589 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2023-11-29 06:23:23,594 INFO L276 IsEmpty]: Start isEmpty. Operand has 93 states, 57 states have (on average 1.894736842105263) internal successors, (108), 83 states have internal predecessors, (108), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-29 06:23:23,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-29 06:23:23,603 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:23:23,604 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:23:23,605 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:23:23,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:23:23,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1498216540, now seen corresponding path program 1 times [2023-11-29 06:23:23,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:23:23,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1308146958] [2023-11-29 06:23:23,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:23:23,624 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 06:23:23,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:23:23,626 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:23,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:23,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:23,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 06:23:23,742 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:23:23,765 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 06:23:23,765 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:23:23,766 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:23:23,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1308146958] [2023-11-29 06:23:23,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1308146958] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:23:23,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:23:23,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:23:23,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703075480] [2023-11-29 06:23:23,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:23:23,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 06:23:23,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:23:23,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 06:23:23,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 06:23:23,807 INFO L87 Difference]: Start difference. First operand has 93 states, 57 states have (on average 1.894736842105263) internal successors, (108), 83 states have internal predecessors, (108), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 06:23:23,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:23:23,848 INFO L93 Difference]: Finished difference Result 92 states and 113 transitions. [2023-11-29 06:23:23,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 06:23:23,851 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2023-11-29 06:23:23,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:23:23,859 INFO L225 Difference]: With dead ends: 92 [2023-11-29 06:23:23,859 INFO L226 Difference]: Without dead ends: 91 [2023-11-29 06:23:23,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 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 06:23:23,864 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:23:23,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 108 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:23:23,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-11-29 06:23:23,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2023-11-29 06:23:23,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 56 states have (on average 1.75) internal successors, (98), 81 states have internal predecessors, (98), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-29 06:23:23,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 112 transitions. [2023-11-29 06:23:23,906 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 112 transitions. Word has length 14 [2023-11-29 06:23:23,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:23:23,906 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 112 transitions. [2023-11-29 06:23:23,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 06:23:23,907 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 112 transitions. [2023-11-29 06:23:23,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-29 06:23:23,908 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:23:23,908 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:23:23,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:24,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:24,109 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:23:24,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:23:24,110 INFO L85 PathProgramCache]: Analyzing trace with hash -2038427876, now seen corresponding path program 1 times [2023-11-29 06:23:24,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:23:24,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [31579688] [2023-11-29 06:23:24,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:23:24,111 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 06:23:24,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:23:24,112 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:24,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:24,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:24,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 06:23:24,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:23:24,268 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 06:23:24,269 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 1 case distinctions, treesize of input 9 treesize of output 15 [2023-11-29 06:23:24,305 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 06:23:24,306 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:23:24,306 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:23:24,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [31579688] [2023-11-29 06:23:24,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [31579688] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:23:24,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:23:24,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:23:24,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846764743] [2023-11-29 06:23:24,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:23:24,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:23:24,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:23:24,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:23:24,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:23:24,310 INFO L87 Difference]: Start difference. First operand 91 states and 112 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 06:23:24,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:23:24,488 INFO L93 Difference]: Finished difference Result 86 states and 107 transitions. [2023-11-29 06:23:24,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:23:24,488 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2023-11-29 06:23:24,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:23:24,490 INFO L225 Difference]: With dead ends: 86 [2023-11-29 06:23:24,490 INFO L226 Difference]: Without dead ends: 86 [2023-11-29 06:23:24,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 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 06:23:24,492 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 81 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:23:24,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 91 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 06:23:24,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-11-29 06:23:24,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2023-11-29 06:23:24,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 56 states have (on average 1.6607142857142858) internal successors, (93), 76 states have internal predecessors, (93), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-29 06:23:24,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 107 transitions. [2023-11-29 06:23:24,503 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 107 transitions. Word has length 14 [2023-11-29 06:23:24,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:23:24,505 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 107 transitions. [2023-11-29 06:23:24,505 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 06:23:24,505 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 107 transitions. [2023-11-29 06:23:24,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-29 06:23:24,506 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:23:24,506 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:23:24,508 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:24,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:24,707 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:23:24,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:23:24,708 INFO L85 PathProgramCache]: Analyzing trace with hash -2038427875, now seen corresponding path program 1 times [2023-11-29 06:23:24,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:23:24,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1254041727] [2023-11-29 06:23:24,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:23:24,709 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 06:23:24,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:23:24,710 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:24,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:24,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:24,780 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 06:23:24,784 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:23:24,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:23:24,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-11-29 06:23:24,856 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 10 treesize of output 8 [2023-11-29 06:23:24,986 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:23:24,986 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:23:25,206 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 06:23:25,352 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:23:25,352 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:23:25,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1254041727] [2023-11-29 06:23:25,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1254041727] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:23:25,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:23:25,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-29 06:23:25,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953755847] [2023-11-29 06:23:25,353 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:23:25,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 06:23:25,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:23:25,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 06:23:25,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-29 06:23:25,355 INFO L87 Difference]: Start difference. First operand 86 states and 107 transitions. Second operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 06:23:27,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:23:27,109 INFO L93 Difference]: Finished difference Result 158 states and 201 transitions. [2023-11-29 06:23:27,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 06:23:27,110 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 14 [2023-11-29 06:23:27,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:23:27,112 INFO L225 Difference]: With dead ends: 158 [2023-11-29 06:23:27,112 INFO L226 Difference]: Without dead ends: 158 [2023-11-29 06:23:27,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2023-11-29 06:23:27,113 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 248 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 06:23:27,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 408 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 06:23:27,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-11-29 06:23:27,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 90. [2023-11-29 06:23:27,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 60 states have (on average 1.65) internal successors, (99), 80 states have internal predecessors, (99), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-29 06:23:27,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 113 transitions. [2023-11-29 06:23:27,125 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 113 transitions. Word has length 14 [2023-11-29 06:23:27,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:23:27,125 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 113 transitions. [2023-11-29 06:23:27,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 06:23:27,126 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 113 transitions. [2023-11-29 06:23:27,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-29 06:23:27,126 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:23:27,126 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:23:27,128 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:27,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:27,327 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:23:27,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:23:27,328 INFO L85 PathProgramCache]: Analyzing trace with hash -424152504, now seen corresponding path program 1 times [2023-11-29 06:23:27,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:23:27,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1302285934] [2023-11-29 06:23:27,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:23:27,328 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 06:23:27,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:23:27,329 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:27,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:27,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:27,369 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 06:23:27,370 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:23:27,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 06:23:27,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:23:27,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 06:23:27,397 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 06:23:27,398 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:23:27,398 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:23:27,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1302285934] [2023-11-29 06:23:27,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1302285934] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:23:27,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:23:27,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:23:27,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247016514] [2023-11-29 06:23:27,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:23:27,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:23:27,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:23:27,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:23:27,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:23:27,405 INFO L87 Difference]: Start difference. First operand 90 states and 113 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 06:23:27,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:23:27,516 INFO L93 Difference]: Finished difference Result 85 states and 108 transitions. [2023-11-29 06:23:27,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:23:27,516 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2023-11-29 06:23:27,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:23:27,517 INFO L225 Difference]: With dead ends: 85 [2023-11-29 06:23:27,517 INFO L226 Difference]: Without dead ends: 85 [2023-11-29 06:23:27,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 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 06:23:27,519 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 74 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:23:27,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 91 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:23:27,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-11-29 06:23:27,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2023-11-29 06:23:27,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 60 states have (on average 1.5666666666666667) internal successors, (94), 75 states have internal predecessors, (94), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-29 06:23:27,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 108 transitions. [2023-11-29 06:23:27,527 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 108 transitions. Word has length 16 [2023-11-29 06:23:27,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:23:27,527 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 108 transitions. [2023-11-29 06:23:27,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 06:23:27,527 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 108 transitions. [2023-11-29 06:23:27,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-29 06:23:27,528 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:23:27,528 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:23:27,530 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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)] Ended with exit code 0 [2023-11-29 06:23:27,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:27,729 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:23:27,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:23:27,729 INFO L85 PathProgramCache]: Analyzing trace with hash -424152503, now seen corresponding path program 1 times [2023-11-29 06:23:27,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:23:27,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1679308320] [2023-11-29 06:23:27,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:23:27,730 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 06:23:27,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:23:27,731 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:27,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:27,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:27,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 06:23:27,781 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:23:27,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-11-29 06:23:27,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:23:27,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 06:23:27,970 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:23:27,970 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:23:27,970 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:23:27,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1679308320] [2023-11-29 06:23:27,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1679308320] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:23:27,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:23:27,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 06:23:27,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102598655] [2023-11-29 06:23:27,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:23:27,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 06:23:27,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:23:27,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 06:23:27,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:23:27,973 INFO L87 Difference]: Start difference. First operand 85 states and 108 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 06:23:28,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:23:28,539 INFO L93 Difference]: Finished difference Result 88 states and 112 transitions. [2023-11-29 06:23:28,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 06:23:28,540 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2023-11-29 06:23:28,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:23:28,541 INFO L225 Difference]: With dead ends: 88 [2023-11-29 06:23:28,541 INFO L226 Difference]: Without dead ends: 88 [2023-11-29 06:23:28,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-29 06:23:28,543 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 162 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 06:23:28,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 260 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 06:23:28,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-11-29 06:23:28,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2023-11-29 06:23:28,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 62 states have (on average 1.564516129032258) internal successors, (97), 77 states have internal predecessors, (97), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-29 06:23:28,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 111 transitions. [2023-11-29 06:23:28,551 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 111 transitions. Word has length 16 [2023-11-29 06:23:28,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:23:28,552 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 111 transitions. [2023-11-29 06:23:28,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 06:23:28,552 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 111 transitions. [2023-11-29 06:23:28,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-29 06:23:28,553 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:23:28,553 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:23:28,555 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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)] Ended with exit code 0 [2023-11-29 06:23:28,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:28,756 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:23:28,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:23:28,756 INFO L85 PathProgramCache]: Analyzing trace with hash 411528305, now seen corresponding path program 1 times [2023-11-29 06:23:28,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:23:28,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1914058800] [2023-11-29 06:23:28,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:23:28,757 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 06:23:28,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:23:28,758 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:28,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:28,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:28,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 06:23:28,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:23:28,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-11-29 06:23:28,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:23:28,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 06:23:29,078 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:23:29,079 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:23:29,847 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:23:29,847 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:23:29,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1914058800] [2023-11-29 06:23:29,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1914058800] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:23:29,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:23:29,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-11-29 06:23:29,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359786582] [2023-11-29 06:23:29,848 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:23:29,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 06:23:29,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:23:29,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 06:23:29,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2023-11-29 06:23:29,850 INFO L87 Difference]: Start difference. First operand 87 states and 111 transitions. Second operand has 17 states, 16 states have (on average 1.4375) internal successors, (23), 15 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-29 06:23:31,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:23:31,275 INFO L93 Difference]: Finished difference Result 90 states and 115 transitions. [2023-11-29 06:23:31,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 06:23:31,276 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.4375) internal successors, (23), 15 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 18 [2023-11-29 06:23:31,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:23:31,276 INFO L225 Difference]: With dead ends: 90 [2023-11-29 06:23:31,277 INFO L226 Difference]: Without dead ends: 90 [2023-11-29 06:23:31,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2023-11-29 06:23:31,277 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 393 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:23:31,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 464 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 06:23:31,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-11-29 06:23:31,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 84. [2023-11-29 06:23:31,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 60 states have (on average 1.55) internal successors, (93), 74 states have internal predecessors, (93), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-29 06:23:31,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 107 transitions. [2023-11-29 06:23:31,282 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 107 transitions. Word has length 18 [2023-11-29 06:23:31,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:23:31,283 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 107 transitions. [2023-11-29 06:23:31,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.4375) internal successors, (23), 15 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-29 06:23:31,283 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 107 transitions. [2023-11-29 06:23:31,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-29 06:23:31,283 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:23:31,284 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:23:31,285 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:31,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:31,484 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:23:31,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:23:31,485 INFO L85 PathProgramCache]: Analyzing trace with hash 663115607, now seen corresponding path program 1 times [2023-11-29 06:23:31,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:23:31,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1913181172] [2023-11-29 06:23:31,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:23:31,485 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 06:23:31,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:23:31,486 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:31,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:31,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:31,542 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 06:23:31,544 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:23:31,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:23:31,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-11-29 06:23:31,584 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 10 treesize of output 8 [2023-11-29 06:23:31,788 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:23:31,789 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:23:32,310 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 06:23:32,451 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:23:32,452 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:23:32,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1913181172] [2023-11-29 06:23:32,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1913181172] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:23:32,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:23:32,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-11-29 06:23:32,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392772879] [2023-11-29 06:23:32,452 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:23:32,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 06:23:32,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:23:32,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 06:23:32,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-11-29 06:23:32,453 INFO L87 Difference]: Start difference. First operand 84 states and 107 transitions. Second operand has 15 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 13 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 06:23:35,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:23:35,955 INFO L93 Difference]: Finished difference Result 158 states and 205 transitions. [2023-11-29 06:23:35,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 06:23:35,956 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 13 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 18 [2023-11-29 06:23:35,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:23:35,958 INFO L225 Difference]: With dead ends: 158 [2023-11-29 06:23:35,958 INFO L226 Difference]: Without dead ends: 158 [2023-11-29 06:23:35,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2023-11-29 06:23:35,959 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 557 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-29 06:23:35,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [562 Valid, 584 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-29 06:23:35,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-11-29 06:23:35,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 92. [2023-11-29 06:23:35,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 68 states have (on average 1.5441176470588236) internal successors, (105), 82 states have internal predecessors, (105), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-29 06:23:35,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 119 transitions. [2023-11-29 06:23:35,964 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 119 transitions. Word has length 18 [2023-11-29 06:23:35,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:23:35,964 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 119 transitions. [2023-11-29 06:23:35,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 13 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 06:23:35,965 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 119 transitions. [2023-11-29 06:23:35,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-29 06:23:35,965 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:23:35,965 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:23:35,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:36,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:36,166 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:23:36,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:23:36,166 INFO L85 PathProgramCache]: Analyzing trace with hash -135016666, now seen corresponding path program 1 times [2023-11-29 06:23:36,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:23:36,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1632176118] [2023-11-29 06:23:36,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:23:36,167 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 06:23:36,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:23:36,168 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:36,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:36,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:36,218 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:23:36,219 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:23:36,276 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:23:36,277 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:23:36,277 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:23:36,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1632176118] [2023-11-29 06:23:36,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1632176118] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:23:36,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:23:36,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 06:23:36,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473644458] [2023-11-29 06:23:36,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:23:36,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 06:23:36,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:23:36,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 06:23:36,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:23:36,279 INFO L87 Difference]: Start difference. First operand 92 states and 119 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 06:23:36,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:23:36,491 INFO L93 Difference]: Finished difference Result 116 states and 151 transitions. [2023-11-29 06:23:36,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 06:23:36,492 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2023-11-29 06:23:36,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:23:36,493 INFO L225 Difference]: With dead ends: 116 [2023-11-29 06:23:36,493 INFO L226 Difference]: Without dead ends: 116 [2023-11-29 06:23:36,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-29 06:23:36,493 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 134 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:23:36,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 417 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 06:23:36,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-11-29 06:23:36,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 107. [2023-11-29 06:23:36,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 82 states have (on average 1.524390243902439) internal successors, (125), 96 states have internal predecessors, (125), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-29 06:23:36,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 141 transitions. [2023-11-29 06:23:36,498 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 141 transitions. Word has length 19 [2023-11-29 06:23:36,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:23:36,498 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 141 transitions. [2023-11-29 06:23:36,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 06:23:36,499 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 141 transitions. [2023-11-29 06:23:36,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-29 06:23:36,500 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:23:36,500 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:23:36,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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)] Forceful destruction successful, exit code 0 [2023-11-29 06:23:36,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:36,700 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:23:36,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:23:36,701 INFO L85 PathProgramCache]: Analyzing trace with hash 2001486846, now seen corresponding path program 1 times [2023-11-29 06:23:36,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:23:36,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1437969280] [2023-11-29 06:23:36,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:23:36,701 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 06:23:36,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:23:36,702 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:36,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:36,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:36,767 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 06:23:36,769 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:23:36,956 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 06:23:36,956 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:23:37,274 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 06:23:37,275 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:23:37,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1437969280] [2023-11-29 06:23:37,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1437969280] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:23:37,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:23:37,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2023-11-29 06:23:37,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739410688] [2023-11-29 06:23:37,275 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:23:37,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 06:23:37,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:23:37,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 06:23:37,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2023-11-29 06:23:37,277 INFO L87 Difference]: Start difference. First operand 107 states and 141 transitions. Second operand has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 18 states have internal predecessors, (26), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 06:23:38,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:23:38,083 INFO L93 Difference]: Finished difference Result 177 states and 219 transitions. [2023-11-29 06:23:38,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 06:23:38,084 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 18 states have internal predecessors, (26), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 21 [2023-11-29 06:23:38,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:23:38,085 INFO L225 Difference]: With dead ends: 177 [2023-11-29 06:23:38,085 INFO L226 Difference]: Without dead ends: 177 [2023-11-29 06:23:38,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=208, Invalid=662, Unknown=0, NotChecked=0, Total=870 [2023-11-29 06:23:38,086 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 292 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 06:23:38,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 930 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 06:23:38,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2023-11-29 06:23:38,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 124. [2023-11-29 06:23:38,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 98 states have (on average 1.4591836734693877) internal successors, (143), 112 states have internal predecessors, (143), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 06:23:38,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 161 transitions. [2023-11-29 06:23:38,092 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 161 transitions. Word has length 21 [2023-11-29 06:23:38,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:23:38,092 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 161 transitions. [2023-11-29 06:23:38,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 18 states have internal predecessors, (26), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 06:23:38,093 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 161 transitions. [2023-11-29 06:23:38,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-29 06:23:38,093 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:23:38,093 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:23:38,096 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:38,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:38,294 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:23:38,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:23:38,295 INFO L85 PathProgramCache]: Analyzing trace with hash 140469153, now seen corresponding path program 1 times [2023-11-29 06:23:38,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:23:38,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1853911702] [2023-11-29 06:23:38,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:23:38,295 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 06:23:38,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:23:38,296 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:38,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:38,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:38,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 06:23:38,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:23:38,372 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 06:23:38,372 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:23:38,372 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:23:38,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1853911702] [2023-11-29 06:23:38,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1853911702] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:23:38,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:23:38,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:23:38,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740648938] [2023-11-29 06:23:38,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:23:38,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:23:38,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:23:38,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:23:38,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:23:38,374 INFO L87 Difference]: Start difference. First operand 124 states and 161 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 06:23:38,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:23:38,523 INFO L93 Difference]: Finished difference Result 123 states and 160 transitions. [2023-11-29 06:23:38,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:23:38,524 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2023-11-29 06:23:38,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:23:38,525 INFO L225 Difference]: With dead ends: 123 [2023-11-29 06:23:38,525 INFO L226 Difference]: Without dead ends: 123 [2023-11-29 06:23:38,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 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 06:23:38,526 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 84 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:23:38,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 141 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:23:38,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-11-29 06:23:38,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2023-11-29 06:23:38,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 98 states have (on average 1.4489795918367347) internal successors, (142), 111 states have internal predecessors, (142), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 06:23:38,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 160 transitions. [2023-11-29 06:23:38,531 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 160 transitions. Word has length 23 [2023-11-29 06:23:38,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:23:38,531 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 160 transitions. [2023-11-29 06:23:38,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 06:23:38,531 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 160 transitions. [2023-11-29 06:23:38,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-29 06:23:38,532 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:23:38,532 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:23:38,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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)] Ended with exit code 0 [2023-11-29 06:23:38,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:38,733 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:23:38,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:23:38,733 INFO L85 PathProgramCache]: Analyzing trace with hash 140469154, now seen corresponding path program 1 times [2023-11-29 06:23:38,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:23:38,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [326227063] [2023-11-29 06:23:38,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:23:38,733 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 06:23:38,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:23:38,734 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:38,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:38,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:38,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 06:23:38,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:23:38,883 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 06:23:38,883 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:23:39,121 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 25 treesize of output 21 [2023-11-29 06:23:39,206 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 06:23:39,206 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:23:39,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [326227063] [2023-11-29 06:23:39,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [326227063] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:23:39,207 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:23:39,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-11-29 06:23:39,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687630118] [2023-11-29 06:23:39,207 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:23:39,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 06:23:39,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:23:39,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 06:23:39,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-29 06:23:39,208 INFO L87 Difference]: Start difference. First operand 123 states and 160 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 06:23:40,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:23:40,110 INFO L93 Difference]: Finished difference Result 143 states and 183 transitions. [2023-11-29 06:23:40,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 06:23:40,111 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2023-11-29 06:23:40,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:23:40,112 INFO L225 Difference]: With dead ends: 143 [2023-11-29 06:23:40,112 INFO L226 Difference]: Without dead ends: 143 [2023-11-29 06:23:40,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2023-11-29 06:23:40,112 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 212 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 06:23:40,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 434 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 06:23:40,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2023-11-29 06:23:40,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 125. [2023-11-29 06:23:40,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 100 states have (on average 1.45) internal successors, (145), 113 states have internal predecessors, (145), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 06:23:40,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 163 transitions. [2023-11-29 06:23:40,117 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 163 transitions. Word has length 23 [2023-11-29 06:23:40,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:23:40,117 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 163 transitions. [2023-11-29 06:23:40,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 06:23:40,117 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 163 transitions. [2023-11-29 06:23:40,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-29 06:23:40,118 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:23:40,118 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:23:40,122 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:40,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:40,319 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:23:40,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:23:40,319 INFO L85 PathProgramCache]: Analyzing trace with hash 219359071, now seen corresponding path program 1 times [2023-11-29 06:23:40,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:23:40,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2080713958] [2023-11-29 06:23:40,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:23:40,320 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 06:23:40,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:23:40,321 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:40,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:40,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:40,375 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 06:23:40,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:23:40,541 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 06:23:40,541 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:23:40,891 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:23:40,891 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:23:40,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2080713958] [2023-11-29 06:23:40,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2080713958] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:23:40,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:23:40,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 18 [2023-11-29 06:23:40,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630502523] [2023-11-29 06:23:40,892 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:23:40,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 06:23:40,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:23:40,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 06:23:40,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2023-11-29 06:23:40,894 INFO L87 Difference]: Start difference. First operand 125 states and 163 transitions. Second operand has 18 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 15 states have internal predecessors, (30), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 06:23:41,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:23:41,797 INFO L93 Difference]: Finished difference Result 235 states and 303 transitions. [2023-11-29 06:23:41,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 06:23:41,798 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 15 states have internal predecessors, (30), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 24 [2023-11-29 06:23:41,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:23:41,799 INFO L225 Difference]: With dead ends: 235 [2023-11-29 06:23:41,799 INFO L226 Difference]: Without dead ends: 235 [2023-11-29 06:23:41,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=167, Invalid=535, Unknown=0, NotChecked=0, Total=702 [2023-11-29 06:23:41,800 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 533 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 06:23:41,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [542 Valid, 810 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 06:23:41,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2023-11-29 06:23:41,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 152. [2023-11-29 06:23:41,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 127 states have (on average 1.4566929133858268) internal successors, (185), 140 states have internal predecessors, (185), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 06:23:41,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 203 transitions. [2023-11-29 06:23:41,807 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 203 transitions. Word has length 24 [2023-11-29 06:23:41,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:23:41,807 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 203 transitions. [2023-11-29 06:23:41,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 15 states have internal predecessors, (30), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 06:23:41,808 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 203 transitions. [2023-11-29 06:23:41,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-29 06:23:41,809 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:23:41,809 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:23:41,811 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:42,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:42,012 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:23:42,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:23:42,012 INFO L85 PathProgramCache]: Analyzing trace with hash 59576483, now seen corresponding path program 1 times [2023-11-29 06:23:42,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:23:42,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [485969875] [2023-11-29 06:23:42,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:23:42,013 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 06:23:42,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:23:42,013 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:42,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:42,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:42,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 06:23:42,071 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:23:42,076 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 06:23:42,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:23:42,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 06:23:42,109 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 06:23:42,109 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:23:42,109 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:23:42,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [485969875] [2023-11-29 06:23:42,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [485969875] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:23:42,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:23:42,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:23:42,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380654506] [2023-11-29 06:23:42,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:23:42,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:23:42,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:23:42,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:23:42,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 06:23:42,111 INFO L87 Difference]: Start difference. First operand 152 states and 203 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 06:23:42,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:23:42,261 INFO L93 Difference]: Finished difference Result 151 states and 201 transitions. [2023-11-29 06:23:42,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 06:23:42,262 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2023-11-29 06:23:42,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:23:42,263 INFO L225 Difference]: With dead ends: 151 [2023-11-29 06:23:42,263 INFO L226 Difference]: Without dead ends: 151 [2023-11-29 06:23:42,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 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 06:23:42,264 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 80 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:23:42,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 143 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:23:42,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-11-29 06:23:42,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2023-11-29 06:23:42,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 127 states have (on average 1.4409448818897639) internal successors, (183), 139 states have internal predecessors, (183), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 06:23:42,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 201 transitions. [2023-11-29 06:23:42,270 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 201 transitions. Word has length 24 [2023-11-29 06:23:42,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:23:42,271 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 201 transitions. [2023-11-29 06:23:42,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 06:23:42,271 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 201 transitions. [2023-11-29 06:23:42,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-29 06:23:42,272 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:23:42,272 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:23:42,274 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:42,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:42,472 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:23:42,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:23:42,473 INFO L85 PathProgramCache]: Analyzing trace with hash 59576484, now seen corresponding path program 1 times [2023-11-29 06:23:42,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:23:42,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1545494966] [2023-11-29 06:23:42,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:23:42,473 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 06:23:42,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:23:42,474 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:42,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:42,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:42,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 06:23:42,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:23:42,649 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 06:23:42,649 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:23:42,910 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 25 treesize of output 21 [2023-11-29 06:23:43,043 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 06:23:43,043 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:23:43,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1545494966] [2023-11-29 06:23:43,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1545494966] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:23:43,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:23:43,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-11-29 06:23:43,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366660323] [2023-11-29 06:23:43,044 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:23:43,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 06:23:43,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:23:43,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 06:23:43,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-29 06:23:43,045 INFO L87 Difference]: Start difference. First operand 151 states and 201 transitions. Second operand has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 12 states have internal predecessors, (30), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 06:23:44,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:23:44,175 INFO L93 Difference]: Finished difference Result 202 states and 261 transitions. [2023-11-29 06:23:44,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 06:23:44,176 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 12 states have internal predecessors, (30), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2023-11-29 06:23:44,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:23:44,177 INFO L225 Difference]: With dead ends: 202 [2023-11-29 06:23:44,177 INFO L226 Difference]: Without dead ends: 202 [2023-11-29 06:23:44,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2023-11-29 06:23:44,178 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 195 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:23:44,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 481 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 06:23:44,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2023-11-29 06:23:44,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 157. [2023-11-29 06:23:44,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 133 states have (on average 1.4360902255639099) internal successors, (191), 145 states have internal predecessors, (191), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 06:23:44,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 209 transitions. [2023-11-29 06:23:44,184 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 209 transitions. Word has length 24 [2023-11-29 06:23:44,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:23:44,184 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 209 transitions. [2023-11-29 06:23:44,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 12 states have internal predecessors, (30), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 06:23:44,185 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 209 transitions. [2023-11-29 06:23:44,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-29 06:23:44,185 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:23:44,185 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:23:44,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:44,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:44,386 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:23:44,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:23:44,386 INFO L85 PathProgramCache]: Analyzing trace with hash 617231563, now seen corresponding path program 1 times [2023-11-29 06:23:44,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:23:44,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [6158321] [2023-11-29 06:23:44,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:23:44,387 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 06:23:44,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:23:44,388 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:44,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:44,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:23:44,449 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:23:44,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:23:44,529 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:23:44,529 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:23:44,610 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 06:23:44,610 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:23:44,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [6158321] [2023-11-29 06:23:44,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [6158321] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 06:23:44,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:23:44,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 12 [2023-11-29 06:23:44,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096310334] [2023-11-29 06:23:44,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:23:44,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:23:44,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:23:44,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:23:44,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-29 06:23:44,612 INFO L87 Difference]: Start difference. First operand 157 states and 209 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 06:23:44,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:23:44,731 INFO L93 Difference]: Finished difference Result 169 states and 220 transitions. [2023-11-29 06:23:44,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 06:23:44,732 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2023-11-29 06:23:44,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:23:44,733 INFO L225 Difference]: With dead ends: 169 [2023-11-29 06:23:44,733 INFO L226 Difference]: Without dead ends: 169 [2023-11-29 06:23:44,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-11-29 06:23:44,734 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 23 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:23:44,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 413 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:23:44,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2023-11-29 06:23:44,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 161. [2023-11-29 06:23:44,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 136 states have (on average 1.4264705882352942) internal successors, (194), 148 states have internal predecessors, (194), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 06:23:44,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 212 transitions. [2023-11-29 06:23:44,740 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 212 transitions. Word has length 27 [2023-11-29 06:23:44,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:23:44,740 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 212 transitions. [2023-11-29 06:23:44,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 06:23:44,740 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 212 transitions. [2023-11-29 06:23:44,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-29 06:23:44,741 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:23:44,741 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:23:44,743 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:44,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:44,941 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2023-11-29 06:23:44,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:23:44,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1920876324, now seen corresponding path program 2 times [2023-11-29 06:23:44,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:23:44,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [661353459] [2023-11-29 06:23:44,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:23:44,942 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 06:23:44,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:23:44,943 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:44,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:45,016 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 06:23:45,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2023-11-29 06:23:45,016 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 06:23:45,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:23:45,086 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-11-29 06:23:45,086 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 06:23:45,087 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK (25 of 26 remaining) [2023-11-29 06:23:45,089 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 26 remaining) [2023-11-29 06:23:45,090 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 26 remaining) [2023-11-29 06:23:45,090 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 26 remaining) [2023-11-29 06:23:45,090 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 26 remaining) [2023-11-29 06:23:45,090 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 26 remaining) [2023-11-29 06:23:45,090 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 26 remaining) [2023-11-29 06:23:45,090 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 26 remaining) [2023-11-29 06:23:45,090 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 26 remaining) [2023-11-29 06:23:45,091 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 26 remaining) [2023-11-29 06:23:45,091 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 26 remaining) [2023-11-29 06:23:45,091 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 26 remaining) [2023-11-29 06:23:45,091 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 26 remaining) [2023-11-29 06:23:45,091 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 26 remaining) [2023-11-29 06:23:45,091 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 26 remaining) [2023-11-29 06:23:45,092 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 26 remaining) [2023-11-29 06:23:45,092 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 26 remaining) [2023-11-29 06:23:45,092 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 26 remaining) [2023-11-29 06:23:45,092 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 26 remaining) [2023-11-29 06:23:45,092 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 26 remaining) [2023-11-29 06:23:45,092 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 26 remaining) [2023-11-29 06:23:45,093 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 26 remaining) [2023-11-29 06:23:45,093 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 26 remaining) [2023-11-29 06:23:45,093 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 26 remaining) [2023-11-29 06:23:45,093 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 26 remaining) [2023-11-29 06:23:45,093 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 26 remaining) [2023-11-29 06:23:45,095 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:45,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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 06:23:45,296 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:23:45,299 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 06:23:45,313 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-11-29 06:23:45,314 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-11-29 06:23:45,319 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 06:23:45 BoogieIcfgContainer [2023-11-29 06:23:45,319 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 06:23:45,320 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 06:23:45,320 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 06:23:45,320 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 06:23:45,320 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:23:23" (3/4) ... [2023-11-29 06:23:45,322 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-29 06:23:45,323 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 06:23:45,323 INFO L158 Benchmark]: Toolchain (without parser) took 23034.83ms. Allocated memory was 69.2MB in the beginning and 100.7MB in the end (delta: 31.5MB). Free memory was 34.6MB in the beginning and 34.3MB in the end (delta: 322.0kB). Peak memory consumption was 31.2MB. Max. memory is 16.1GB. [2023-11-29 06:23:45,324 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 50.3MB. Free memory was 26.7MB in the beginning and 26.7MB in the end (delta: 52.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 06:23:45,324 INFO L158 Benchmark]: CACSL2BoogieTranslator took 402.67ms. Allocated memory is still 69.2MB. Free memory was 34.5MB in the beginning and 44.7MB in the end (delta: -10.3MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. [2023-11-29 06:23:45,324 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.54ms. Allocated memory is still 69.2MB. Free memory was 44.7MB in the beginning and 42.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 06:23:45,324 INFO L158 Benchmark]: Boogie Preprocessor took 51.84ms. Allocated memory is still 69.2MB. Free memory was 42.4MB in the beginning and 39.5MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 06:23:45,325 INFO L158 Benchmark]: RCFGBuilder took 678.13ms. Allocated memory is still 69.2MB. Free memory was 39.2MB in the beginning and 30.3MB in the end (delta: 8.9MB). Peak memory consumption was 15.3MB. Max. memory is 16.1GB. [2023-11-29 06:23:45,325 INFO L158 Benchmark]: TraceAbstraction took 21842.52ms. Allocated memory was 69.2MB in the beginning and 100.7MB in the end (delta: 31.5MB). Free memory was 29.7MB in the beginning and 35.3MB in the end (delta: -5.6MB). Peak memory consumption was 25.1MB. Max. memory is 16.1GB. [2023-11-29 06:23:45,325 INFO L158 Benchmark]: Witness Printer took 2.82ms. Allocated memory is still 100.7MB. Free memory was 35.3MB in the beginning and 34.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 06:23:45,327 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 50.3MB. Free memory was 26.7MB in the beginning and 26.7MB in the end (delta: 52.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 402.67ms. Allocated memory is still 69.2MB. Free memory was 34.5MB in the beginning and 44.7MB in the end (delta: -10.3MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.54ms. Allocated memory is still 69.2MB. Free memory was 44.7MB in the beginning and 42.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.84ms. Allocated memory is still 69.2MB. Free memory was 42.4MB in the beginning and 39.5MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 678.13ms. Allocated memory is still 69.2MB. Free memory was 39.2MB in the beginning and 30.3MB in the end (delta: 8.9MB). Peak memory consumption was 15.3MB. Max. memory is 16.1GB. * TraceAbstraction took 21842.52ms. Allocated memory was 69.2MB in the beginning and 100.7MB in the end (delta: 31.5MB). Free memory was 29.7MB in the beginning and 35.3MB in the end (delta: -5.6MB). Peak memory consumption was 25.1MB. Max. memory is 16.1GB. * Witness Printer took 2.82ms. Allocated memory is still 100.7MB. Free memory was 35.3MB in the beginning and 34.3MB 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: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - 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: 1128]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1128. Possible FailurePath: [L1130] unsigned long pat_len = __VERIFIER_nondet_ulong(), a_len = __VERIFIER_nondet_ulong(); [L1130] unsigned long pat_len = __VERIFIER_nondet_ulong(), a_len = __VERIFIER_nondet_ulong(); [L1132] CALL assume_abort_if_not(pat_len < 4294967296 / sizeof(int)) VAL [\old(cond)=1] [L5] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L1132] RET assume_abort_if_not(pat_len < 4294967296 / sizeof(int)) VAL [pat_len=2] [L1133] CALL assume_abort_if_not(a_len < 4294967296 / sizeof(int)) VAL [\old(cond)=1] [L5] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L1133] RET assume_abort_if_not(a_len < 4294967296 / sizeof(int)) VAL [a_len=0, pat_len=2] [L1134] int *pat=malloc(sizeof(int)*pat_len); [L1135] int *a=malloc(sizeof(int)*a_len); [L1139] int j = 0; VAL [a={3:0}, a_len=0, j=0, pat={-2147483646:0}, pat_len=2] [L1139] COND TRUE j < pat_len [L1140] pat[j] = __VERIFIER_nondet_int() [L1139] j++ VAL [a={3:0}, a_len=0, j=1, pat={-2147483646:0}, pat_len=2] [L1139] COND TRUE j < pat_len [L1140] pat[j] = __VERIFIER_nondet_int() [L1139] j++ VAL [a={3:0}, a_len=0, j=2, pat={-2147483646:0}, pat_len=2] [L1139] COND FALSE !(j < pat_len) VAL [a={3:0}, a_len=0, j=2, pat={-2147483646:0}, pat_len=2] [L1142] int j = 0; VAL [a={3:0}, a_len=0, j=0, pat={-2147483646:0}, pat_len=2] [L1142] COND FALSE !(j < a_len) VAL [a={3:0}, a_len=0, j=0, pat={-2147483646:0}, pat_len=2] [L1147] CALL is_relaxed_prefix(pat, pat_len, a, a_len) [L1106] COND TRUE pat_length>a_length+1 [L1107] return 0; VAL [\old(a_length)=0, \old(pat_length)=2, \result=0, a={3:0}, a={3:0}, a_length=0, pat={-2147483646:0}, pat={-2147483646:0}, pat_length=2] [L1147] RET is_relaxed_prefix(pat, pat_len, a, a_len) [L1147] COND FALSE !(is_relaxed_prefix(pat, pat_len, a, a_len)) [L1163] COND FALSE !(pat_len<=a_len+1) [L1176] return 0; VAL [\result=0, a={3:0}, a_len=0, pat={-2147483646:0}, pat_len=2] - 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: -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: 18]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 93 locations, 26 error locations. Started 1 CEGAR loops. OverallTime: 21.7s, OverallIterations: 16, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 12.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3147 SdHoareTripleChecker+Valid, 9.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3068 mSDsluCounter, 5775 SdHoareTripleChecker+Invalid, 8.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4602 mSDsCounter, 182 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3556 IncrementalHoareTripleChecker+Invalid, 3738 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 182 mSolverCounterUnsat, 1173 mSDtfsCounter, 3556 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 493 GetRequests, 323 SyntacticMatches, 1 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 4.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=161occurred in iteration=15, InterpolantAutomatonStates: 132, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 15 MinimizatonAttempts, 357 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.1s InterpolantComputationTime, 321 NumberOfCodeBlocks, 321 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 441 ConstructedInterpolants, 7 QuantifiedInterpolants, 2525 SizeOfPredicates, 70 NumberOfNonLiveVariables, 941 ConjunctsInSsa, 129 ConjunctsInUnsatCore, 23 InterpolantComputations, 8 PerfectInterpolantSequences, 85/124 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 06:23:45,342 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18d3edfb-8ebb-4736-a885-1df0ea9d8597/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