./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-crafted/zero_sum3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-crafted/zero_sum3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d3267df59902b667587c98ecbe021c99cc3d2a5e5866fbd08ee1fb3133370aa4 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 18:04:41,585 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 18:04:41,691 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 18:04:41,699 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 18:04:41,699 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 18:04:41,741 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 18:04:41,744 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 18:04:41,744 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 18:04:41,746 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 18:04:41,747 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 18:04:41,748 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 18:04:41,749 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 18:04:41,750 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 18:04:41,751 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 18:04:41,752 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 18:04:41,752 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 18:04:41,753 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 18:04:41,753 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 18:04:41,754 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 18:04:41,754 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 18:04:41,755 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 18:04:41,758 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 18:04:41,758 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 18:04:41,759 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 18:04:41,759 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 18:04:41,780 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 18:04:41,780 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 18:04:41,781 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 18:04:41,781 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 18:04:41,782 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 18:04:41,783 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 18:04:41,783 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 18:04:41,784 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:04:41,784 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 18:04:41,785 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 18:04:41,785 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 18:04:41,785 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 18:04:41,786 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 18:04:41,786 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 18:04:41,786 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 18:04:41,787 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 18:04:41,787 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 18:04:41,788 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_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d3267df59902b667587c98ecbe021c99cc3d2a5e5866fbd08ee1fb3133370aa4 [2024-11-08 18:04:42,150 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 18:04:42,213 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 18:04:42,216 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 18:04:42,223 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 18:04:42,224 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 18:04:42,225 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/array-crafted/zero_sum3.c Unable to find full path for "g++" [2024-11-08 18:04:44,342 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 18:04:44,606 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 18:04:44,609 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/sv-benchmarks/c/array-crafted/zero_sum3.c [2024-11-08 18:04:44,622 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/data/25f07c8e2/49610b44f8e545db881537d58fc0821f/FLAG7881ba383 [2024-11-08 18:04:44,946 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/data/25f07c8e2/49610b44f8e545db881537d58fc0821f [2024-11-08 18:04:44,949 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 18:04:44,951 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 18:04:44,953 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 18:04:44,954 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 18:04:44,961 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 18:04:44,962 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:04:44" (1/1) ... [2024-11-08 18:04:44,963 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19222957 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:04:44, skipping insertion in model container [2024-11-08 18:04:44,964 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 06:04:44" (1/1) ... [2024-11-08 18:04:44,997 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 18:04:45,317 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/sv-benchmarks/c/array-crafted/zero_sum3.c[400,413] [2024-11-08 18:04:45,356 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:04:45,370 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 18:04:45,391 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/sv-benchmarks/c/array-crafted/zero_sum3.c[400,413] [2024-11-08 18:04:45,415 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 18:04:45,439 INFO L204 MainTranslator]: Completed translation [2024-11-08 18:04:45,440 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:04:45 WrapperNode [2024-11-08 18:04:45,440 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 18:04:45,441 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 18:04:45,442 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 18:04:45,442 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 18:04:45,451 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:04:45" (1/1) ... [2024-11-08 18:04:45,460 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:04:45" (1/1) ... [2024-11-08 18:04:45,497 INFO L138 Inliner]: procedures = 15, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 101 [2024-11-08 18:04:45,501 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 18:04:45,502 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 18:04:45,502 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 18:04:45,502 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 18:04:45,516 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:04:45" (1/1) ... [2024-11-08 18:04:45,517 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:04:45" (1/1) ... [2024-11-08 18:04:45,520 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:04:45" (1/1) ... [2024-11-08 18:04:45,543 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-08 18:04:45,543 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:04:45" (1/1) ... [2024-11-08 18:04:45,544 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:04:45" (1/1) ... [2024-11-08 18:04:45,556 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:04:45" (1/1) ... [2024-11-08 18:04:45,565 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:04:45" (1/1) ... [2024-11-08 18:04:45,568 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:04:45" (1/1) ... [2024-11-08 18:04:45,570 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:04:45" (1/1) ... [2024-11-08 18:04:45,576 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 18:04:45,577 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 18:04:45,581 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 18:04:45,581 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 18:04:45,582 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:04:45" (1/1) ... [2024-11-08 18:04:45,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 18:04:45,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:04:45,625 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 18:04:45,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 18:04:45,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 18:04:45,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 18:04:45,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 18:04:45,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 18:04:45,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 18:04:45,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 18:04:45,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 18:04:45,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 18:04:45,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 18:04:45,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 18:04:45,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 18:04:45,787 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 18:04:45,790 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 18:04:46,042 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-11-08 18:04:46,042 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 18:04:46,057 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 18:04:46,057 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 18:04:46,058 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:04:46 BoogieIcfgContainer [2024-11-08 18:04:46,058 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 18:04:46,061 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 18:04:46,062 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 18:04:46,066 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 18:04:46,066 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 06:04:44" (1/3) ... [2024-11-08 18:04:46,067 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70be5a9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:04:46, skipping insertion in model container [2024-11-08 18:04:46,067 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 06:04:45" (2/3) ... [2024-11-08 18:04:46,068 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70be5a9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 06:04:46, skipping insertion in model container [2024-11-08 18:04:46,068 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 06:04:46" (3/3) ... [2024-11-08 18:04:46,070 INFO L112 eAbstractionObserver]: Analyzing ICFG zero_sum3.c [2024-11-08 18:04:46,093 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 18:04:46,094 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 18:04:46,183 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 18:04:46,190 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@962b942, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 18:04:46,191 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 18:04:46,195 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 31 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:04:46,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-08 18:04:46,206 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:04:46,207 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:04:46,209 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:04:46,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:04:46,218 INFO L85 PathProgramCache]: Analyzing trace with hash -573423822, now seen corresponding path program 1 times [2024-11-08 18:04:46,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:04:46,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794653208] [2024-11-08 18:04:46,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:04:46,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:04:46,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:04:46,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:04:46,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:04:46,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794653208] [2024-11-08 18:04:46,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794653208] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:04:46,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:04:46,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 18:04:46,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200024398] [2024-11-08 18:04:46,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:04:46,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 18:04:46,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:04:46,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 18:04:46,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:04:46,682 INFO L87 Difference]: Start difference. First operand has 32 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 31 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:04:46,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:04:46,833 INFO L93 Difference]: Finished difference Result 61 states and 90 transitions. [2024-11-08 18:04:46,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 18:04:46,837 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-08 18:04:46,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:04:46,847 INFO L225 Difference]: With dead ends: 61 [2024-11-08 18:04:46,847 INFO L226 Difference]: Without dead ends: 29 [2024-11-08 18:04:46,851 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 18:04:46,857 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 1 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:04:46,859 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 56 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:04:46,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-08 18:04:46,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-11-08 18:04:46,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.5) internal successors, (42), 28 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:04:46,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 42 transitions. [2024-11-08 18:04:46,908 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 42 transitions. Word has length 19 [2024-11-08 18:04:46,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:04:46,910 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 42 transitions. [2024-11-08 18:04:46,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:04:46,911 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 42 transitions. [2024-11-08 18:04:46,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-08 18:04:46,912 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:04:46,912 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:04:46,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 18:04:46,913 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:04:46,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:04:46,915 INFO L85 PathProgramCache]: Analyzing trace with hash -2042382889, now seen corresponding path program 1 times [2024-11-08 18:04:46,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:04:46,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399321244] [2024-11-08 18:04:46,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:04:46,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:04:46,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:04:47,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 18:04:47,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:04:47,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399321244] [2024-11-08 18:04:47,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399321244] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 18:04:47,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 18:04:47,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 18:04:47,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439945374] [2024-11-08 18:04:47,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 18:04:47,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 18:04:47,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:04:47,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 18:04:47,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:04:47,142 INFO L87 Difference]: Start difference. First operand 29 states and 42 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:04:47,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:04:47,312 INFO L93 Difference]: Finished difference Result 60 states and 94 transitions. [2024-11-08 18:04:47,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 18:04:47,313 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-08 18:04:47,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:04:47,314 INFO L225 Difference]: With dead ends: 60 [2024-11-08 18:04:47,315 INFO L226 Difference]: Without dead ends: 41 [2024-11-08 18:04:47,315 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 18:04:47,317 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 51 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:04:47,318 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 15 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 18:04:47,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-08 18:04:47,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-11-08 18:04:47,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.35) internal successors, (54), 40 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:04:47,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 54 transitions. [2024-11-08 18:04:47,328 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 54 transitions. Word has length 21 [2024-11-08 18:04:47,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:04:47,329 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 54 transitions. [2024-11-08 18:04:47,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:04:47,330 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 54 transitions. [2024-11-08 18:04:47,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-08 18:04:47,331 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:04:47,331 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:04:47,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 18:04:47,331 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:04:47,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:04:47,332 INFO L85 PathProgramCache]: Analyzing trace with hash -2143746731, now seen corresponding path program 1 times [2024-11-08 18:04:47,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:04:47,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529951637] [2024-11-08 18:04:47,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:04:47,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:04:47,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:04:47,626 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 18:04:47,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:04:47,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529951637] [2024-11-08 18:04:47,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529951637] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:04:47,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348513826] [2024-11-08 18:04:47,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:04:47,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:04:47,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:04:47,635 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:04:47,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 18:04:47,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:04:47,781 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 18:04:47,789 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:04:47,905 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 18:04:47,905 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:04:47,967 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 18:04:47,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348513826] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:04:47,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:04:47,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-08 18:04:47,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587973371] [2024-11-08 18:04:47,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:04:47,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 18:04:47,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:04:47,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 18:04:47,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-11-08 18:04:47,975 INFO L87 Difference]: Start difference. First operand 41 states and 54 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:04:48,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:04:48,146 INFO L93 Difference]: Finished difference Result 77 states and 103 transitions. [2024-11-08 18:04:48,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 18:04:48,147 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-11-08 18:04:48,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:04:48,148 INFO L225 Difference]: With dead ends: 77 [2024-11-08 18:04:48,148 INFO L226 Difference]: Without dead ends: 43 [2024-11-08 18:04:48,149 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-11-08 18:04:48,150 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 1 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:04:48,151 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 61 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:04:48,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-08 18:04:48,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2024-11-08 18:04:48,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.3170731707317074) internal successors, (54), 41 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:04:48,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 54 transitions. [2024-11-08 18:04:48,159 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 54 transitions. Word has length 33 [2024-11-08 18:04:48,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:04:48,160 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 54 transitions. [2024-11-08 18:04:48,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:04:48,160 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 54 transitions. [2024-11-08 18:04:48,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-08 18:04:48,161 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:04:48,162 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:04:48,186 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 18:04:48,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-08 18:04:48,366 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:04:48,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:04:48,367 INFO L85 PathProgramCache]: Analyzing trace with hash 474969914, now seen corresponding path program 2 times [2024-11-08 18:04:48,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:04:48,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20225448] [2024-11-08 18:04:48,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:04:48,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:04:48,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:04:48,545 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 18:04:48,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:04:48,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20225448] [2024-11-08 18:04:48,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20225448] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:04:48,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801705627] [2024-11-08 18:04:48,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 18:04:48,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:04:48,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:04:48,549 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:04:48,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 18:04:48,640 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 18:04:48,640 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:04:48,642 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 18:04:48,644 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:04:48,722 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 18:04:48,725 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:04:48,796 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 18:04:48,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801705627] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:04:48,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:04:48,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-08 18:04:48,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942292333] [2024-11-08 18:04:48,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:04:48,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 18:04:48,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:04:48,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 18:04:48,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-08 18:04:48,805 INFO L87 Difference]: Start difference. First operand 42 states and 54 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:04:49,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:04:49,011 INFO L93 Difference]: Finished difference Result 83 states and 116 transitions. [2024-11-08 18:04:49,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 18:04:49,012 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-08 18:04:49,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:04:49,013 INFO L225 Difference]: With dead ends: 83 [2024-11-08 18:04:49,013 INFO L226 Difference]: Without dead ends: 54 [2024-11-08 18:04:49,014 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 64 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2024-11-08 18:04:49,015 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 65 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:04:49,015 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 15 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:04:49,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-08 18:04:49,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2024-11-08 18:04:49,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.148936170212766) internal successors, (54), 47 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:04:49,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2024-11-08 18:04:49,032 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 35 [2024-11-08 18:04:49,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:04:49,032 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2024-11-08 18:04:49,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:04:49,033 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2024-11-08 18:04:49,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-08 18:04:49,034 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:04:49,034 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:04:49,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 18:04:49,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:04:49,236 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:04:49,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:04:49,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1898311112, now seen corresponding path program 3 times [2024-11-08 18:04:49,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:04:49,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843179136] [2024-11-08 18:04:49,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:04:49,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:04:49,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:04:52,586 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:04:52,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:04:52,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843179136] [2024-11-08 18:04:52,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843179136] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:04:52,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095503579] [2024-11-08 18:04:52,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 18:04:52,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:04:52,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:04:52,592 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:04:52,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 18:04:52,689 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-08 18:04:52,689 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:04:52,692 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-11-08 18:04:52,697 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:04:54,391 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:04:54,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 14 [2024-11-08 18:04:54,564 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 24 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 18:04:54,565 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:04:55,839 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:04:55,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 14 [2024-11-08 18:04:56,018 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 18:04:56,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095503579] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:04:56,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:04:56,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 19, 21] total 45 [2024-11-08 18:04:56,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371381199] [2024-11-08 18:04:56,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:04:56,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-08 18:04:56,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:04:56,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-08 18:04:56,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1756, Unknown=0, NotChecked=0, Total=1980 [2024-11-08 18:04:56,024 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand has 45 states, 45 states have (on average 2.911111111111111) internal successors, (131), 45 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:04:57,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:04:57,860 INFO L93 Difference]: Finished difference Result 91 states and 102 transitions. [2024-11-08 18:04:57,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-08 18:04:57,861 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.911111111111111) internal successors, (131), 45 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-08 18:04:57,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:04:57,863 INFO L225 Difference]: With dead ends: 91 [2024-11-08 18:04:57,863 INFO L226 Difference]: Without dead ends: 87 [2024-11-08 18:04:57,864 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 71 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 704 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=331, Invalid=2531, Unknown=0, NotChecked=0, Total=2862 [2024-11-08 18:04:57,866 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 47 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:04:57,866 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 115 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1018 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-08 18:04:57,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-08 18:04:57,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 77. [2024-11-08 18:04:57,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.1578947368421053) internal successors, (88), 76 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:04:57,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 88 transitions. [2024-11-08 18:04:57,882 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 88 transitions. Word has length 47 [2024-11-08 18:04:57,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:04:57,883 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 88 transitions. [2024-11-08 18:04:57,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.911111111111111) internal successors, (131), 45 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:04:57,888 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 88 transitions. [2024-11-08 18:04:57,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-08 18:04:57,889 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:04:57,889 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:04:57,916 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 18:04:58,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:04:58,090 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:04:58,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:04:58,091 INFO L85 PathProgramCache]: Analyzing trace with hash 161367485, now seen corresponding path program 4 times [2024-11-08 18:04:58,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:04:58,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883671149] [2024-11-08 18:04:58,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:04:58,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:04:58,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:04:58,285 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-08 18:04:58,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:04:58,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883671149] [2024-11-08 18:04:58,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883671149] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:04:58,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284650743] [2024-11-08 18:04:58,286 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 18:04:58,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:04:58,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:04:58,289 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:04:58,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 18:04:58,381 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 18:04:58,381 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:04:58,382 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 18:04:58,385 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:04:58,528 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-08 18:04:58,529 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:04:58,660 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-08 18:04:58,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284650743] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:04:58,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:04:58,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2024-11-08 18:04:58,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202550458] [2024-11-08 18:04:58,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:04:58,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-08 18:04:58,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:04:58,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-08 18:04:58,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2024-11-08 18:04:58,664 INFO L87 Difference]: Start difference. First operand 77 states and 88 transitions. Second operand has 19 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 19 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:04:59,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:04:59,606 INFO L93 Difference]: Finished difference Result 170 states and 197 transitions. [2024-11-08 18:04:59,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-08 18:04:59,607 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 19 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-08 18:04:59,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:04:59,608 INFO L225 Difference]: With dead ends: 170 [2024-11-08 18:04:59,608 INFO L226 Difference]: Without dead ends: 98 [2024-11-08 18:04:59,609 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 84 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=151, Invalid=719, Unknown=0, NotChecked=0, Total=870 [2024-11-08 18:04:59,612 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 107 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 18:04:59,613 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 75 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 18:04:59,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-08 18:04:59,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 81. [2024-11-08 18:04:59,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.1375) internal successors, (91), 80 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:04:59,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 91 transitions. [2024-11-08 18:04:59,640 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 91 transitions. Word has length 49 [2024-11-08 18:04:59,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:04:59,640 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 91 transitions. [2024-11-08 18:04:59,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 19 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:04:59,643 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 91 transitions. [2024-11-08 18:04:59,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-08 18:04:59,644 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:04:59,644 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:04:59,671 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 18:04:59,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:04:59,845 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:04:59,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:04:59,845 INFO L85 PathProgramCache]: Analyzing trace with hash 125425026, now seen corresponding path program 5 times [2024-11-08 18:04:59,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:04:59,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564375500] [2024-11-08 18:04:59,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:04:59,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:04:59,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:00,051 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-08 18:05:00,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:05:00,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564375500] [2024-11-08 18:05:00,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564375500] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:05:00,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505090721] [2024-11-08 18:05:00,053 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 18:05:00,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:05:00,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:05:00,055 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:05:00,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 18:05:00,188 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-08 18:05:00,188 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:05:00,190 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 18:05:00,192 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:05:00,349 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-08 18:05:00,350 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:05:00,468 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-08 18:05:00,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505090721] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:05:00,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:05:00,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-08 18:05:00,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120143425] [2024-11-08 18:05:00,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:05:00,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-08 18:05:00,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:05:00,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-08 18:05:00,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-11-08 18:05:00,472 INFO L87 Difference]: Start difference. First operand 81 states and 91 transitions. Second operand has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:05:00,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:05:00,738 INFO L93 Difference]: Finished difference Result 125 states and 139 transitions. [2024-11-08 18:05:00,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 18:05:00,739 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2024-11-08 18:05:00,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:05:00,740 INFO L225 Difference]: With dead ends: 125 [2024-11-08 18:05:00,740 INFO L226 Difference]: Without dead ends: 68 [2024-11-08 18:05:00,741 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 91 SyntacticMatches, 6 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2024-11-08 18:05:00,742 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 46 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:05:00,742 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 45 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 18:05:00,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-08 18:05:00,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 62. [2024-11-08 18:05:00,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.1147540983606556) internal successors, (68), 61 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:05:00,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 68 transitions. [2024-11-08 18:05:00,768 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 68 transitions. Word has length 51 [2024-11-08 18:05:00,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:05:00,769 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 68 transitions. [2024-11-08 18:05:00,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:05:00,769 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 68 transitions. [2024-11-08 18:05:00,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-08 18:05:00,770 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:05:00,770 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:05:00,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-08 18:05:00,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:05:00,975 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:05:00,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:05:00,976 INFO L85 PathProgramCache]: Analyzing trace with hash -440756773, now seen corresponding path program 6 times [2024-11-08 18:05:00,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:05:00,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591145954] [2024-11-08 18:05:00,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:05:00,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:05:01,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:06,019 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:05:06,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:05:06,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591145954] [2024-11-08 18:05:06,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591145954] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:05:06,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337524340] [2024-11-08 18:05:06,022 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 18:05:06,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:05:06,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:05:06,026 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:05:06,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 18:05:06,151 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-08 18:05:06,152 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:05:06,155 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-11-08 18:05:06,164 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:05:06,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 1 [2024-11-08 18:05:07,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:05:07,694 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:05:07,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 39 [2024-11-08 18:05:07,871 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 3 proven. 54 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 18:05:07,872 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:05:09,163 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 18:05:09,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337524340] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:05:09,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:05:09,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 16, 14] total 53 [2024-11-08 18:05:09,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587060016] [2024-11-08 18:05:09,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:05:09,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-08 18:05:09,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:05:09,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-08 18:05:09,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=2526, Unknown=0, NotChecked=0, Total=2756 [2024-11-08 18:05:09,168 INFO L87 Difference]: Start difference. First operand 62 states and 68 transitions. Second operand has 53 states, 53 states have (on average 3.150943396226415) internal successors, (167), 53 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:05:14,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:05:14,354 INFO L93 Difference]: Finished difference Result 137 states and 152 transitions. [2024-11-08 18:05:14,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-08 18:05:14,355 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 3.150943396226415) internal successors, (167), 53 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-11-08 18:05:14,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:05:14,356 INFO L225 Difference]: With dead ends: 137 [2024-11-08 18:05:14,357 INFO L226 Difference]: Without dead ends: 133 [2024-11-08 18:05:14,359 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 101 SyntacticMatches, 4 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1599 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=615, Invalid=5705, Unknown=0, NotChecked=0, Total=6320 [2024-11-08 18:05:14,360 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 111 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 2145 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 2278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 2145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-08 18:05:14,361 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 163 Invalid, 2278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 2145 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-08 18:05:14,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-08 18:05:14,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 109. [2024-11-08 18:05:14,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.1296296296296295) internal successors, (122), 108 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:05:14,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 122 transitions. [2024-11-08 18:05:14,392 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 122 transitions. Word has length 61 [2024-11-08 18:05:14,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:05:14,395 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 122 transitions. [2024-11-08 18:05:14,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 3.150943396226415) internal successors, (167), 53 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:05:14,395 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 122 transitions. [2024-11-08 18:05:14,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-08 18:05:14,400 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:05:14,400 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:05:14,426 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 18:05:14,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:05:14,605 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:05:14,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:05:14,605 INFO L85 PathProgramCache]: Analyzing trace with hash -647554304, now seen corresponding path program 7 times [2024-11-08 18:05:14,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:05:14,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181109107] [2024-11-08 18:05:14,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:05:14,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:05:14,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:14,873 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-08 18:05:14,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:05:14,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181109107] [2024-11-08 18:05:14,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181109107] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:05:14,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697368694] [2024-11-08 18:05:14,875 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 18:05:14,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:05:14,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:05:14,877 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:05:14,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 18:05:14,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:14,984 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-08 18:05:14,987 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:05:15,128 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-08 18:05:15,128 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:05:15,235 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-08 18:05:15,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697368694] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:05:15,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:05:15,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-08 18:05:15,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543495925] [2024-11-08 18:05:15,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:05:15,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-08 18:05:15,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:05:15,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-08 18:05:15,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-11-08 18:05:15,237 INFO L87 Difference]: Start difference. First operand 109 states and 122 transitions. Second operand has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:05:15,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:05:15,586 INFO L93 Difference]: Finished difference Result 225 states and 251 transitions. [2024-11-08 18:05:15,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 18:05:15,586 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-08 18:05:15,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:05:15,588 INFO L225 Difference]: With dead ends: 225 [2024-11-08 18:05:15,588 INFO L226 Difference]: Without dead ends: 102 [2024-11-08 18:05:15,589 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 113 SyntacticMatches, 7 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-11-08 18:05:15,591 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 30 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 18:05:15,592 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 47 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 18:05:15,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-08 18:05:15,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2024-11-08 18:05:15,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.12) internal successors, (112), 100 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:05:15,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 112 transitions. [2024-11-08 18:05:15,629 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 112 transitions. Word has length 63 [2024-11-08 18:05:15,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:05:15,629 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 112 transitions. [2024-11-08 18:05:15,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:05:15,631 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 112 transitions. [2024-11-08 18:05:15,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-08 18:05:15,632 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:05:15,632 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:05:15,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-08 18:05:15,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-08 18:05:15,837 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:05:15,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:05:15,838 INFO L85 PathProgramCache]: Analyzing trace with hash 33400773, now seen corresponding path program 8 times [2024-11-08 18:05:15,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:05:15,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145235595] [2024-11-08 18:05:15,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:05:15,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:05:15,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:16,077 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-08 18:05:16,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:05:16,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145235595] [2024-11-08 18:05:16,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145235595] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:05:16,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472992732] [2024-11-08 18:05:16,078 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 18:05:16,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:05:16,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:05:16,082 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:05:16,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 18:05:16,194 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 18:05:16,195 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:05:16,196 INFO L255 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-08 18:05:16,199 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:05:16,320 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-08 18:05:16,321 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:05:16,436 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-08 18:05:16,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472992732] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:05:16,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:05:16,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-08 18:05:16,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065123143] [2024-11-08 18:05:16,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:05:16,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-08 18:05:16,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:05:16,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-08 18:05:16,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-08 18:05:16,440 INFO L87 Difference]: Start difference. First operand 101 states and 112 transitions. Second operand has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:05:16,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:05:16,780 INFO L93 Difference]: Finished difference Result 155 states and 175 transitions. [2024-11-08 18:05:16,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 18:05:16,781 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-08 18:05:16,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:05:16,782 INFO L225 Difference]: With dead ends: 155 [2024-11-08 18:05:16,782 INFO L226 Difference]: Without dead ends: 82 [2024-11-08 18:05:16,783 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 116 SyntacticMatches, 8 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2024-11-08 18:05:16,784 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 60 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 18:05:16,787 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 48 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 18:05:16,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-08 18:05:16,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 76. [2024-11-08 18:05:16,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.0933333333333333) internal successors, (82), 75 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:05:16,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 82 transitions. [2024-11-08 18:05:16,811 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 82 transitions. Word has length 65 [2024-11-08 18:05:16,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:05:16,811 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 82 transitions. [2024-11-08 18:05:16,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:05:16,812 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 82 transitions. [2024-11-08 18:05:16,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-08 18:05:16,812 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:05:16,813 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:05:16,837 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 18:05:17,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-08 18:05:17,013 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:05:17,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:05:17,014 INFO L85 PathProgramCache]: Analyzing trace with hash -636764098, now seen corresponding path program 9 times [2024-11-08 18:05:17,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:05:17,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733091659] [2024-11-08 18:05:17,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:05:17,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:05:17,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:23,489 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:05:23,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:05:23,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733091659] [2024-11-08 18:05:23,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733091659] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:05:23,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723425336] [2024-11-08 18:05:23,490 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 18:05:23,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:05:23,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:05:23,493 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:05:23,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 18:05:23,625 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-08 18:05:23,625 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:05:23,629 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 116 conjuncts are in the unsatisfiable core [2024-11-08 18:05:23,635 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:05:23,684 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 1 [2024-11-08 18:05:25,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:05:25,411 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:05:25,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 39 [2024-11-08 18:05:25,591 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 4 proven. 96 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 18:05:25,591 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:05:26,972 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 18:05:26,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723425336] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:05:26,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:05:26,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 18, 16] total 65 [2024-11-08 18:05:26,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979695192] [2024-11-08 18:05:26,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:05:26,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-11-08 18:05:26,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:05:26,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-11-08 18:05:26,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=3894, Unknown=0, NotChecked=0, Total=4160 [2024-11-08 18:05:26,977 INFO L87 Difference]: Start difference. First operand 76 states and 82 transitions. Second operand has 65 states, 65 states have (on average 3.1538461538461537) internal successors, (205), 65 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:05:34,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:05:34,269 INFO L93 Difference]: Finished difference Result 194 states and 213 transitions. [2024-11-08 18:05:34,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-08 18:05:34,270 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 3.1538461538461537) internal successors, (205), 65 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-11-08 18:05:34,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:05:34,271 INFO L225 Difference]: With dead ends: 194 [2024-11-08 18:05:34,271 INFO L226 Difference]: Without dead ends: 190 [2024-11-08 18:05:34,274 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 124 SyntacticMatches, 4 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2130 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=774, Invalid=8928, Unknown=0, NotChecked=0, Total=9702 [2024-11-08 18:05:34,275 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 264 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 3258 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 3569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 3258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-08 18:05:34,276 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 201 Invalid, 3569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 3258 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-08 18:05:34,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-08 18:05:34,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 111. [2024-11-08 18:05:34,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.1) internal successors, (121), 110 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:05:34,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 121 transitions. [2024-11-08 18:05:34,310 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 121 transitions. Word has length 75 [2024-11-08 18:05:34,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:05:34,311 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 121 transitions. [2024-11-08 18:05:34,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 3.1538461538461537) internal successors, (205), 65 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:05:34,311 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 121 transitions. [2024-11-08 18:05:34,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-08 18:05:34,312 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:05:34,312 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:05:34,328 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 18:05:34,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-08 18:05:34,513 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:05:34,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:05:34,514 INFO L85 PathProgramCache]: Analyzing trace with hash -701749085, now seen corresponding path program 10 times [2024-11-08 18:05:34,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:05:34,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419874771] [2024-11-08 18:05:34,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:05:34,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:05:34,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:34,806 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-08 18:05:34,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:05:34,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419874771] [2024-11-08 18:05:34,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419874771] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:05:34,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074330355] [2024-11-08 18:05:34,808 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 18:05:34,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:05:34,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:05:34,810 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:05:34,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 18:05:34,927 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 18:05:34,927 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:05:34,928 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-08 18:05:34,930 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:05:35,139 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-08 18:05:35,139 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:05:35,293 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-08 18:05:35,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074330355] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:05:35,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:05:35,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 24 [2024-11-08 18:05:35,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349225299] [2024-11-08 18:05:35,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:05:35,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-08 18:05:35,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:05:35,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-08 18:05:35,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2024-11-08 18:05:35,295 INFO L87 Difference]: Start difference. First operand 111 states and 121 transitions. Second operand has 24 states, 24 states have (on average 3.0833333333333335) internal successors, (74), 24 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:05:35,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:05:35,920 INFO L93 Difference]: Finished difference Result 282 states and 311 transitions. [2024-11-08 18:05:35,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-08 18:05:35,921 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.0833333333333335) internal successors, (74), 24 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-08 18:05:35,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:05:35,921 INFO L225 Difference]: With dead ends: 282 [2024-11-08 18:05:35,921 INFO L226 Difference]: Without dead ends: 131 [2024-11-08 18:05:35,922 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 134 SyntacticMatches, 9 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=163, Invalid=593, Unknown=0, NotChecked=0, Total=756 [2024-11-08 18:05:35,922 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 137 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 18:05:35,923 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 70 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 18:05:35,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-08 18:05:35,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 118. [2024-11-08 18:05:35,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 1.0854700854700854) internal successors, (127), 117 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:05:35,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 127 transitions. [2024-11-08 18:05:35,947 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 127 transitions. Word has length 77 [2024-11-08 18:05:35,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:05:35,947 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 127 transitions. [2024-11-08 18:05:35,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.0833333333333335) internal successors, (74), 24 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:05:35,948 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 127 transitions. [2024-11-08 18:05:35,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-08 18:05:35,948 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:05:35,948 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:05:35,968 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-08 18:05:36,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-08 18:05:36,149 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:05:36,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:05:36,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1183334029, now seen corresponding path program 11 times [2024-11-08 18:05:36,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:05:36,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415700878] [2024-11-08 18:05:36,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:05:36,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:05:36,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:36,413 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 9 proven. 32 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-08 18:05:36,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:05:36,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415700878] [2024-11-08 18:05:36,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415700878] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:05:36,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603107993] [2024-11-08 18:05:36,414 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 18:05:36,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:05:36,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:05:36,417 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:05:36,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 18:05:36,721 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-08 18:05:36,721 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:05:36,724 INFO L255 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-08 18:05:36,726 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:05:36,982 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-08 18:05:36,982 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:05:37,166 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-08 18:05:37,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603107993] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:05:37,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:05:37,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 24 [2024-11-08 18:05:37,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565350600] [2024-11-08 18:05:37,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:05:37,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-08 18:05:37,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:05:37,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-08 18:05:37,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2024-11-08 18:05:37,168 INFO L87 Difference]: Start difference. First operand 118 states and 127 transitions. Second operand has 24 states, 24 states have (on average 3.875) internal successors, (93), 24 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:05:37,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:05:37,709 INFO L93 Difference]: Finished difference Result 130 states and 139 transitions. [2024-11-08 18:05:37,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-08 18:05:37,709 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.875) internal successors, (93), 24 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2024-11-08 18:05:37,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:05:37,710 INFO L225 Difference]: With dead ends: 130 [2024-11-08 18:05:37,711 INFO L226 Difference]: Without dead ends: 96 [2024-11-08 18:05:37,711 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 147 SyntacticMatches, 10 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=186, Invalid=744, Unknown=0, NotChecked=0, Total=930 [2024-11-08 18:05:37,712 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 125 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 18:05:37,712 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 56 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 18:05:37,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-08 18:05:37,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 90. [2024-11-08 18:05:37,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.0786516853932584) internal successors, (96), 89 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:05:37,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 96 transitions. [2024-11-08 18:05:37,736 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 96 transitions. Word has length 81 [2024-11-08 18:05:37,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:05:37,737 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 96 transitions. [2024-11-08 18:05:37,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.875) internal successors, (93), 24 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:05:37,737 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 96 transitions. [2024-11-08 18:05:37,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-08 18:05:37,738 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:05:37,738 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:05:37,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-08 18:05:37,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-08 18:05:37,938 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:05:37,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:05:37,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1026212193, now seen corresponding path program 12 times [2024-11-08 18:05:37,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:05:37,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303924212] [2024-11-08 18:05:37,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:05:37,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:05:38,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:46,849 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 6 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:05:46,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:05:46,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303924212] [2024-11-08 18:05:46,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303924212] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:05:46,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991807613] [2024-11-08 18:05:46,850 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 18:05:46,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:05:46,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:05:46,851 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:05:46,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 18:05:46,995 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-08 18:05:46,996 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:05:47,000 INFO L255 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 138 conjuncts are in the unsatisfiable core [2024-11-08 18:05:47,006 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:05:47,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 1 [2024-11-08 18:05:48,795 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:05:48,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 16 [2024-11-08 18:05:48,976 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 5 proven. 150 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-08 18:05:48,977 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:05:50,749 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-08 18:05:50,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991807613] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:05:50,749 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:05:50,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 20, 18] total 71 [2024-11-08 18:05:50,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675392246] [2024-11-08 18:05:50,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:05:50,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-11-08 18:05:50,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:05:50,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-11-08 18:05:50,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=4707, Unknown=0, NotChecked=0, Total=4970 [2024-11-08 18:05:50,753 INFO L87 Difference]: Start difference. First operand 90 states and 96 transitions. Second operand has 71 states, 71 states have (on average 3.3380281690140845) internal successors, (237), 71 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:06:00,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:06:00,237 INFO L93 Difference]: Finished difference Result 256 states and 281 transitions. [2024-11-08 18:06:00,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-08 18:06:00,238 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 3.3380281690140845) internal successors, (237), 71 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2024-11-08 18:06:00,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:06:00,240 INFO L225 Difference]: With dead ends: 256 [2024-11-08 18:06:00,240 INFO L226 Difference]: Without dead ends: 252 [2024-11-08 18:06:00,247 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 153 SyntacticMatches, 4 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3167 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=1086, Invalid=13194, Unknown=0, NotChecked=0, Total=14280 [2024-11-08 18:06:00,248 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 365 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 4294 mSolverCounterSat, 484 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 4778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 484 IncrementalHoareTripleChecker+Valid, 4294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:06:00,248 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 217 Invalid, 4778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [484 Valid, 4294 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-08 18:06:00,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2024-11-08 18:06:00,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 131. [2024-11-08 18:06:00,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.0846153846153845) internal successors, (141), 130 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:06:00,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 141 transitions. [2024-11-08 18:06:00,281 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 141 transitions. Word has length 89 [2024-11-08 18:06:00,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:06:00,282 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 141 transitions. [2024-11-08 18:06:00,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 3.3380281690140845) internal successors, (237), 71 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:06:00,282 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 141 transitions. [2024-11-08 18:06:00,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-08 18:06:00,283 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:06:00,283 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:06:00,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-08 18:06:00,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-08 18:06:00,484 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:06:00,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:06:00,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1227906310, now seen corresponding path program 13 times [2024-11-08 18:06:00,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:06:00,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870015984] [2024-11-08 18:06:00,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:06:00,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:06:00,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:06:00,822 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 27 proven. 34 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2024-11-08 18:06:00,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:06:00,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870015984] [2024-11-08 18:06:00,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870015984] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:06:00,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333465119] [2024-11-08 18:06:00,823 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 18:06:00,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:06:00,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:06:00,826 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:06:00,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-08 18:06:00,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:06:00,968 INFO L255 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-08 18:06:00,970 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:06:01,200 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2024-11-08 18:06:01,201 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:06:01,369 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2024-11-08 18:06:01,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333465119] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:06:01,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:06:01,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-11-08 18:06:01,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987871623] [2024-11-08 18:06:01,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:06:01,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-08 18:06:01,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:06:01,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-08 18:06:01,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2024-11-08 18:06:01,372 INFO L87 Difference]: Start difference. First operand 131 states and 141 transitions. Second operand has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:06:01,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:06:01,895 INFO L93 Difference]: Finished difference Result 313 states and 338 transitions. [2024-11-08 18:06:01,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 18:06:01,895 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2024-11-08 18:06:01,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:06:01,897 INFO L225 Difference]: With dead ends: 313 [2024-11-08 18:06:01,897 INFO L226 Difference]: Without dead ends: 134 [2024-11-08 18:06:01,897 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 163 SyntacticMatches, 11 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2024-11-08 18:06:01,898 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 40 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 18:06:01,898 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 80 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 669 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 18:06:01,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-11-08 18:06:01,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 133. [2024-11-08 18:06:01,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.0833333333333333) internal successors, (143), 132 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:06:01,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 143 transitions. [2024-11-08 18:06:01,928 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 143 transitions. Word has length 91 [2024-11-08 18:06:01,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:06:01,928 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 143 transitions. [2024-11-08 18:06:01,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:06:01,929 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 143 transitions. [2024-11-08 18:06:01,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-08 18:06:01,930 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:06:01,930 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:06:01,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-08 18:06:02,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-08 18:06:02,131 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:06:02,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:06:02,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1345866069, now seen corresponding path program 14 times [2024-11-08 18:06:02,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:06:02,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169401514] [2024-11-08 18:06:02,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:06:02,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:06:02,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:06:02,471 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 16 proven. 45 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-11-08 18:06:02,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:06:02,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169401514] [2024-11-08 18:06:02,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169401514] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:06:02,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028678010] [2024-11-08 18:06:02,472 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 18:06:02,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:06:02,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:06:02,473 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:06:02,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-08 18:06:02,665 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 18:06:02,665 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:06:02,668 INFO L255 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-08 18:06:02,670 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:06:02,867 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 25 proven. 36 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-11-08 18:06:02,867 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:06:03,033 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 25 proven. 36 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-11-08 18:06:03,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028678010] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:06:03,033 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:06:03,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-11-08 18:06:03,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449051572] [2024-11-08 18:06:03,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:06:03,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-08 18:06:03,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:06:03,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-08 18:06:03,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2024-11-08 18:06:03,036 INFO L87 Difference]: Start difference. First operand 133 states and 143 transitions. Second operand has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:06:03,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:06:03,446 INFO L93 Difference]: Finished difference Result 215 states and 235 transitions. [2024-11-08 18:06:03,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-08 18:06:03,446 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2024-11-08 18:06:03,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:06:03,448 INFO L225 Difference]: With dead ends: 215 [2024-11-08 18:06:03,448 INFO L226 Difference]: Without dead ends: 110 [2024-11-08 18:06:03,449 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 166 SyntacticMatches, 12 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2024-11-08 18:06:03,449 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 99 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 18:06:03,450 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 69 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 18:06:03,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-08 18:06:03,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 104. [2024-11-08 18:06:03,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.0679611650485437) internal successors, (110), 103 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:06:03,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 110 transitions. [2024-11-08 18:06:03,480 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 110 transitions. Word has length 93 [2024-11-08 18:06:03,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:06:03,480 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 110 transitions. [2024-11-08 18:06:03,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:06:03,481 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 110 transitions. [2024-11-08 18:06:03,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-08 18:06:03,481 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:06:03,482 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:06:03,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-08 18:06:03,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-08 18:06:03,682 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:06:03,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:06:03,683 INFO L85 PathProgramCache]: Analyzing trace with hash 530630980, now seen corresponding path program 15 times [2024-11-08 18:06:03,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:06:03,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729174167] [2024-11-08 18:06:03,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:06:03,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:06:03,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:06:15,864 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 4 proven. 248 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:06:15,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:06:15,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729174167] [2024-11-08 18:06:15,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729174167] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:06:15,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301478912] [2024-11-08 18:06:15,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 18:06:15,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:06:15,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:06:15,867 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:06:15,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-08 18:06:16,072 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-08 18:06:16,072 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:06:16,079 INFO L255 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 168 conjuncts are in the unsatisfiable core [2024-11-08 18:06:16,085 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:06:16,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 1 [2024-11-08 18:06:20,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:06:20,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:06:20,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:06:20,786 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:06:20,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 44 treesize of output 59 [2024-11-08 18:06:21,046 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 6 proven. 216 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-08 18:06:21,046 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:06:27,551 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-08 18:06:27,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301478912] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:06:27,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:06:27,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 41, 42] total 124 [2024-11-08 18:06:27,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704465374] [2024-11-08 18:06:27,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:06:27,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 124 states [2024-11-08 18:06:27,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:06:27,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2024-11-08 18:06:27,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=956, Invalid=14296, Unknown=0, NotChecked=0, Total=15252 [2024-11-08 18:06:27,559 INFO L87 Difference]: Start difference. First operand 104 states and 110 transitions. Second operand has 124 states, 124 states have (on average 2.314516129032258) internal successors, (287), 124 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:06:57,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:06:57,799 INFO L93 Difference]: Finished difference Result 306 states and 336 transitions. [2024-11-08 18:06:57,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2024-11-08 18:06:57,800 INFO L78 Accepts]: Start accepts. Automaton has has 124 states, 124 states have (on average 2.314516129032258) internal successors, (287), 124 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-11-08 18:06:57,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:06:57,801 INFO L225 Difference]: With dead ends: 306 [2024-11-08 18:06:57,801 INFO L226 Difference]: Without dead ends: 224 [2024-11-08 18:06:57,808 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 137 SyntacticMatches, 2 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13593 ImplicationChecksByTransitivity, 34.1s TimeCoverageRelationStatistics Valid=4120, Invalid=47182, Unknown=0, NotChecked=0, Total=51302 [2024-11-08 18:06:57,809 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 570 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 7601 mSolverCounterSat, 889 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 570 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 8490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 889 IncrementalHoareTripleChecker+Valid, 7601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2024-11-08 18:06:57,809 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [570 Valid, 285 Invalid, 8490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [889 Valid, 7601 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2024-11-08 18:06:57,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-11-08 18:06:57,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 171. [2024-11-08 18:06:57,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.076470588235294) internal successors, (183), 170 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:06:57,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 183 transitions. [2024-11-08 18:06:57,861 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 183 transitions. Word has length 103 [2024-11-08 18:06:57,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:06:57,862 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 183 transitions. [2024-11-08 18:06:57,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 124 states, 124 states have (on average 2.314516129032258) internal successors, (287), 124 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:06:57,863 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 183 transitions. [2024-11-08 18:06:57,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-08 18:06:57,864 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:06:57,864 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:06:57,887 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-08 18:06:58,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-08 18:06:58,065 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:06:58,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:06:58,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1815667858, now seen corresponding path program 16 times [2024-11-08 18:06:58,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:06:58,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382342612] [2024-11-08 18:06:58,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:06:58,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:06:58,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:06:58,431 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 38 proven. 47 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2024-11-08 18:06:58,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:06:58,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382342612] [2024-11-08 18:06:58,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382342612] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:06:58,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41735622] [2024-11-08 18:06:58,432 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 18:06:58,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:06:58,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:06:58,433 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:06:58,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-08 18:06:58,571 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 18:06:58,571 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:06:58,572 INFO L255 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-08 18:06:58,574 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:06:58,955 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 36 proven. 49 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2024-11-08 18:06:58,955 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:06:59,305 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 36 proven. 49 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2024-11-08 18:06:59,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41735622] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:06:59,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:06:59,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 39 [2024-11-08 18:06:59,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495822193] [2024-11-08 18:06:59,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:06:59,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-08 18:06:59,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:06:59,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-08 18:06:59,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1271, Unknown=0, NotChecked=0, Total=1482 [2024-11-08 18:06:59,309 INFO L87 Difference]: Start difference. First operand 171 states and 183 transitions. Second operand has 39 states, 39 states have (on average 2.7435897435897436) internal successors, (107), 39 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:07:00,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:07:00,697 INFO L93 Difference]: Finished difference Result 309 states and 335 transitions. [2024-11-08 18:07:00,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-08 18:07:00,698 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.7435897435897436) internal successors, (107), 39 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2024-11-08 18:07:00,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:07:00,699 INFO L225 Difference]: With dead ends: 309 [2024-11-08 18:07:00,699 INFO L226 Difference]: Without dead ends: 154 [2024-11-08 18:07:00,700 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 184 SyntacticMatches, 8 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1335 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=615, Invalid=3675, Unknown=0, NotChecked=0, Total=4290 [2024-11-08 18:07:00,700 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 194 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1266 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 1462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 1266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-08 18:07:00,701 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 71 Invalid, 1462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 1266 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-08 18:07:00,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2024-11-08 18:07:00,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 116. [2024-11-08 18:07:00,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.0608695652173914) internal successors, (122), 115 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:07:00,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 122 transitions. [2024-11-08 18:07:00,745 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 122 transitions. Word has length 107 [2024-11-08 18:07:00,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:07:00,745 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 122 transitions. [2024-11-08 18:07:00,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.7435897435897436) internal successors, (107), 39 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:07:00,745 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 122 transitions. [2024-11-08 18:07:00,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-08 18:07:00,746 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:07:00,747 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:07:00,765 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-08 18:07:00,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-08 18:07:00,947 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:07:00,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:07:00,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1521070366, now seen corresponding path program 17 times [2024-11-08 18:07:00,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:07:00,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758604048] [2024-11-08 18:07:00,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:07:00,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:07:00,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:07:01,361 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 25 proven. 60 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-11-08 18:07:01,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:07:01,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758604048] [2024-11-08 18:07:01,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758604048] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:07:01,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533941538] [2024-11-08 18:07:01,362 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 18:07:01,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:07:01,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:07:01,363 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:07:01,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-08 18:07:02,187 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-11-08 18:07:02,187 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:07:02,190 INFO L255 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-08 18:07:02,192 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:07:02,710 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 49 proven. 36 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-11-08 18:07:02,710 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:07:03,218 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 49 proven. 36 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-11-08 18:07:03,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533941538] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:07:03,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:07:03,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 39 [2024-11-08 18:07:03,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171915538] [2024-11-08 18:07:03,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:07:03,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-08 18:07:03,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:07:03,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-08 18:07:03,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=1265, Unknown=0, NotChecked=0, Total=1482 [2024-11-08 18:07:03,221 INFO L87 Difference]: Start difference. First operand 116 states and 122 transitions. Second operand has 39 states, 39 states have (on average 3.0) internal successors, (117), 39 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:07:03,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:07:03,897 INFO L93 Difference]: Finished difference Result 208 states and 219 transitions. [2024-11-08 18:07:03,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-08 18:07:03,898 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.0) internal successors, (117), 39 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2024-11-08 18:07:03,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:07:03,899 INFO L225 Difference]: With dead ends: 208 [2024-11-08 18:07:03,900 INFO L226 Difference]: Without dead ends: 124 [2024-11-08 18:07:03,901 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 200 SyntacticMatches, 8 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 721 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=318, Invalid=1844, Unknown=0, NotChecked=0, Total=2162 [2024-11-08 18:07:03,901 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 217 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 18:07:03,902 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 73 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 18:07:03,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-11-08 18:07:03,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 118. [2024-11-08 18:07:03,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 1.0598290598290598) internal successors, (124), 117 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:07:03,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 124 transitions. [2024-11-08 18:07:03,967 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 124 transitions. Word has length 115 [2024-11-08 18:07:03,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:07:03,967 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 124 transitions. [2024-11-08 18:07:03,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.0) internal successors, (117), 39 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:07:03,968 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 124 transitions. [2024-11-08 18:07:03,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-08 18:07:03,969 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:07:03,969 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:07:03,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-08 18:07:04,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:07:04,170 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:07:04,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:07:04,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1411581927, now seen corresponding path program 18 times [2024-11-08 18:07:04,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:07:04,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920882509] [2024-11-08 18:07:04,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:07:04,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:07:04,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:07:18,527 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 12 proven. 331 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:07:18,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:07:18,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920882509] [2024-11-08 18:07:18,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920882509] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:07:18,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007782108] [2024-11-08 18:07:18,527 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 18:07:18,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:07:18,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:07:18,530 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:07:18,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-08 18:07:18,773 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-11-08 18:07:18,773 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:07:18,778 WARN L253 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 203 conjuncts are in the unsatisfiable core [2024-11-08 18:07:18,782 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:07:18,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2024-11-08 18:07:22,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:07:22,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:07:22,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:07:22,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:07:22,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:07:22,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:07:22,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:07:22,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:07:22,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:07:22,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 18:07:22,455 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 18:07:22,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 30 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 72 treesize of output 135 [2024-11-08 18:07:23,054 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 343 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:07:23,055 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:07:27,696 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-08 18:07:27,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007782108] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:07:27,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:07:27,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 31, 22] total 94 [2024-11-08 18:07:27,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243233282] [2024-11-08 18:07:27,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:07:27,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2024-11-08 18:07:27,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:07:27,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2024-11-08 18:07:27,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=602, Invalid=8140, Unknown=0, NotChecked=0, Total=8742 [2024-11-08 18:07:27,700 INFO L87 Difference]: Start difference. First operand 118 states and 124 transitions. Second operand has 94 states, 94 states have (on average 3.372340425531915) internal successors, (317), 94 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:07:44,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:07:44,855 INFO L93 Difference]: Finished difference Result 448 states and 482 transitions. [2024-11-08 18:07:44,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2024-11-08 18:07:44,856 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 3.372340425531915) internal successors, (317), 94 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2024-11-08 18:07:44,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:07:44,858 INFO L225 Difference]: With dead ends: 448 [2024-11-08 18:07:44,859 INFO L226 Difference]: Without dead ends: 319 [2024-11-08 18:07:44,860 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 192 SyntacticMatches, 12 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6333 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=2030, Invalid=20922, Unknown=0, NotChecked=0, Total=22952 [2024-11-08 18:07:44,860 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 655 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 8026 mSolverCounterSat, 792 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 8818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 792 IncrementalHoareTripleChecker+Valid, 8026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2024-11-08 18:07:44,861 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [655 Valid, 283 Invalid, 8818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [792 Valid, 8026 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2024-11-08 18:07:44,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2024-11-08 18:07:44,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 207. [2024-11-08 18:07:44,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.0679611650485437) internal successors, (220), 206 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:07:44,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 220 transitions. [2024-11-08 18:07:44,949 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 220 transitions. Word has length 117 [2024-11-08 18:07:44,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:07:44,950 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 220 transitions. [2024-11-08 18:07:44,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 3.372340425531915) internal successors, (317), 94 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:07:44,951 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 220 transitions. [2024-11-08 18:07:44,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-08 18:07:44,952 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:07:44,952 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:07:44,979 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-08 18:07:45,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:07:45,153 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:07:45,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:07:45,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1914509873, now seen corresponding path program 19 times [2024-11-08 18:07:45,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:07:45,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103314638] [2024-11-08 18:07:45,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:07:45,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:07:45,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:07:45,641 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 36 proven. 77 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-11-08 18:07:45,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:07:45,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103314638] [2024-11-08 18:07:45,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103314638] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:07:45,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758026076] [2024-11-08 18:07:45,642 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 18:07:45,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:07:45,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:07:45,643 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:07:45,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-08 18:07:45,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:07:45,812 INFO L255 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-08 18:07:45,815 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:07:46,067 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 49 proven. 64 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-11-08 18:07:46,068 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:07:46,276 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 49 proven. 64 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-11-08 18:07:46,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758026076] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:07:46,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:07:46,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 29 [2024-11-08 18:07:46,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267017065] [2024-11-08 18:07:46,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:07:46,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-08 18:07:46,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:07:46,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-08 18:07:46,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=611, Unknown=0, NotChecked=0, Total=812 [2024-11-08 18:07:46,277 INFO L87 Difference]: Start difference. First operand 207 states and 220 transitions. Second operand has 29 states, 29 states have (on average 2.793103448275862) internal successors, (81), 29 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:07:46,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:07:46,772 INFO L93 Difference]: Finished difference Result 291 states and 312 transitions. [2024-11-08 18:07:46,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-08 18:07:46,773 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.793103448275862) internal successors, (81), 29 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2024-11-08 18:07:46,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:07:46,774 INFO L225 Difference]: With dead ends: 291 [2024-11-08 18:07:46,774 INFO L226 Difference]: Without dead ends: 138 [2024-11-08 18:07:46,775 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 216 SyntacticMatches, 16 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=225, Invalid=705, Unknown=0, NotChecked=0, Total=930 [2024-11-08 18:07:46,776 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 145 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 18:07:46,777 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 36 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 18:07:46,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-08 18:07:46,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 132. [2024-11-08 18:07:46,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.0534351145038168) internal successors, (138), 131 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:07:46,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 138 transitions. [2024-11-08 18:07:46,863 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 138 transitions. Word has length 121 [2024-11-08 18:07:46,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:07:46,864 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 138 transitions. [2024-11-08 18:07:46,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.793103448275862) internal successors, (81), 29 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:07:46,864 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 138 transitions. [2024-11-08 18:07:46,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-08 18:07:46,865 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:07:46,866 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:07:46,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-08 18:07:47,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:07:47,067 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:07:47,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:07:47,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1299010230, now seen corresponding path program 20 times [2024-11-08 18:07:47,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:07:47,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117574061] [2024-11-08 18:07:47,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:07:47,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:07:47,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:08:02,965 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 12 proven. 436 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:08:02,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:08:02,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117574061] [2024-11-08 18:08:02,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117574061] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:08:02,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308386848] [2024-11-08 18:08:02,966 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 18:08:02,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:08:02,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:08:02,967 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:08:02,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-08 18:08:03,151 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 18:08:03,151 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:08:03,156 INFO L255 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 217 conjuncts are in the unsatisfiable core [2024-11-08 18:08:03,161 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:08:03,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2024-11-08 18:08:04,771 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 0 proven. 448 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:08:04,771 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:08:07,843 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 0 proven. 384 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-08 18:08:07,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308386848] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:08:07,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:08:07,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 30, 21] total 87 [2024-11-08 18:08:07,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158404090] [2024-11-08 18:08:07,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:08:07,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2024-11-08 18:08:07,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:08:07,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2024-11-08 18:08:07,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=372, Invalid=7110, Unknown=0, NotChecked=0, Total=7482 [2024-11-08 18:08:07,847 INFO L87 Difference]: Start difference. First operand 132 states and 138 transitions. Second operand has 87 states, 87 states have (on average 3.6666666666666665) internal successors, (319), 87 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:08:21,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:08:21,279 INFO L93 Difference]: Finished difference Result 378 states and 402 transitions. [2024-11-08 18:08:21,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2024-11-08 18:08:21,280 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 3.6666666666666665) internal successors, (319), 87 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2024-11-08 18:08:21,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:08:21,282 INFO L225 Difference]: With dead ends: 378 [2024-11-08 18:08:21,282 INFO L226 Difference]: Without dead ends: 374 [2024-11-08 18:08:21,288 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 245 SyntacticMatches, 1 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5607 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=1592, Invalid=20758, Unknown=0, NotChecked=0, Total=22350 [2024-11-08 18:08:21,289 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 415 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 6460 mSolverCounterSat, 431 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 6891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 431 IncrementalHoareTripleChecker+Valid, 6460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2024-11-08 18:08:21,289 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 218 Invalid, 6891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [431 Valid, 6460 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2024-11-08 18:08:21,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2024-11-08 18:08:21,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 229. [2024-11-08 18:08:21,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 228 states have (on average 1.0614035087719298) internal successors, (242), 228 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:08:21,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 242 transitions. [2024-11-08 18:08:21,416 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 242 transitions. Word has length 131 [2024-11-08 18:08:21,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:08:21,416 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 242 transitions. [2024-11-08 18:08:21,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 3.6666666666666665) internal successors, (319), 87 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:08:21,417 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 242 transitions. [2024-11-08 18:08:21,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-08 18:08:21,419 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:08:21,419 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:08:21,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-08 18:08:21,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:08:21,620 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:08:21,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:08:21,620 INFO L85 PathProgramCache]: Analyzing trace with hash 142066351, now seen corresponding path program 21 times [2024-11-08 18:08:21,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:08:21,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028334785] [2024-11-08 18:08:21,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:08:21,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:08:21,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:08:22,187 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 66 proven. 79 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2024-11-08 18:08:22,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:08:22,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028334785] [2024-11-08 18:08:22,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028334785] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:08:22,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029279424] [2024-11-08 18:08:22,188 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 18:08:22,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:08:22,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:08:22,190 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:08:22,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-08 18:08:22,577 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-08 18:08:22,577 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:08:22,582 INFO L255 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-08 18:08:22,585 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:08:23,244 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 88 proven. 73 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2024-11-08 18:08:23,244 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:08:23,928 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 81 proven. 80 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2024-11-08 18:08:23,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029279424] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:08:23,929 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:08:23,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23, 21] total 60 [2024-11-08 18:08:23,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317411164] [2024-11-08 18:08:23,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:08:23,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-08 18:08:23,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:08:23,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-08 18:08:23,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=578, Invalid=2962, Unknown=0, NotChecked=0, Total=3540 [2024-11-08 18:08:23,932 INFO L87 Difference]: Start difference. First operand 229 states and 242 transitions. Second operand has 60 states, 60 states have (on average 2.566666666666667) internal successors, (154), 60 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:08:27,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:08:27,933 INFO L93 Difference]: Finished difference Result 527 states and 561 transitions. [2024-11-08 18:08:27,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-11-08 18:08:27,934 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.566666666666667) internal successors, (154), 60 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2024-11-08 18:08:27,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:08:27,936 INFO L225 Difference]: With dead ends: 527 [2024-11-08 18:08:27,936 INFO L226 Difference]: Without dead ends: 262 [2024-11-08 18:08:27,938 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 260 SyntacticMatches, 1 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3796 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1865, Invalid=10567, Unknown=0, NotChecked=0, Total=12432 [2024-11-08 18:08:27,939 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 311 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 4242 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 4572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 4242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-08 18:08:27,939 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 142 Invalid, 4572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 4242 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-08 18:08:27,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2024-11-08 18:08:28,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 201. [2024-11-08 18:08:28,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 200 states have (on average 1.055) internal successors, (211), 200 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:08:28,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 211 transitions. [2024-11-08 18:08:28,047 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 211 transitions. Word has length 133 [2024-11-08 18:08:28,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:08:28,048 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 211 transitions. [2024-11-08 18:08:28,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.566666666666667) internal successors, (154), 60 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:08:28,048 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 211 transitions. [2024-11-08 18:08:28,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-08 18:08:28,050 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:08:28,050 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:08:28,078 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-08 18:08:28,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:08:28,255 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:08:28,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:08:28,255 INFO L85 PathProgramCache]: Analyzing trace with hash 150235028, now seen corresponding path program 22 times [2024-11-08 18:08:28,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:08:28,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819791505] [2024-11-08 18:08:28,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:08:28,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:08:28,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:08:28,711 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 49 proven. 96 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2024-11-08 18:08:28,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:08:28,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819791505] [2024-11-08 18:08:28,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819791505] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:08:28,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282055968] [2024-11-08 18:08:28,711 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 18:08:28,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:08:28,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:08:28,713 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:08:28,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-08 18:08:28,886 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 18:08:28,887 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:08:28,888 INFO L255 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-08 18:08:28,890 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:08:29,496 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 81 proven. 64 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2024-11-08 18:08:29,496 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:08:30,087 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 81 proven. 64 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2024-11-08 18:08:30,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282055968] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:08:30,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:08:30,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 49 [2024-11-08 18:08:30,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120060851] [2024-11-08 18:08:30,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:08:30,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-08 18:08:30,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:08:30,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-08 18:08:30,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=331, Invalid=2021, Unknown=0, NotChecked=0, Total=2352 [2024-11-08 18:08:30,091 INFO L87 Difference]: Start difference. First operand 201 states and 211 transitions. Second operand has 49 states, 49 states have (on average 2.795918367346939) internal successors, (137), 49 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:08:31,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:08:31,052 INFO L93 Difference]: Finished difference Result 293 states and 307 transitions. [2024-11-08 18:08:31,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-08 18:08:31,052 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.795918367346939) internal successors, (137), 49 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2024-11-08 18:08:31,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:08:31,054 INFO L225 Difference]: With dead ends: 293 [2024-11-08 18:08:31,054 INFO L226 Difference]: Without dead ends: 152 [2024-11-08 18:08:31,055 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 232 SyntacticMatches, 10 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1208 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=487, Invalid=2935, Unknown=0, NotChecked=0, Total=3422 [2024-11-08 18:08:31,056 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 316 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 784 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 18:08:31,056 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 90 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 784 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 18:08:31,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-11-08 18:08:31,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 146. [2024-11-08 18:08:31,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 1.0482758620689656) internal successors, (152), 145 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:08:31,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 152 transitions. [2024-11-08 18:08:31,131 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 152 transitions. Word has length 135 [2024-11-08 18:08:31,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:08:31,131 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 152 transitions. [2024-11-08 18:08:31,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.795918367346939) internal successors, (137), 49 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:08:31,132 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 152 transitions. [2024-11-08 18:08:31,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-08 18:08:31,132 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:08:31,133 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:08:31,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-08 18:08:31,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:08:31,333 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:08:31,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:08:31,334 INFO L85 PathProgramCache]: Analyzing trace with hash 452782445, now seen corresponding path program 23 times [2024-11-08 18:08:31,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:08:31,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481320434] [2024-11-08 18:08:31,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:08:31,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:08:31,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:08:51,818 INFO L134 CoverageAnalysis]: Checked inductivity of 567 backedges. 46 proven. 521 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:08:51,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:08:51,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481320434] [2024-11-08 18:08:51,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481320434] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:08:51,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322141799] [2024-11-08 18:08:51,819 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 18:08:51,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:08:51,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:08:51,820 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:08:51,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-08 18:08:52,962 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-08 18:08:52,962 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:08:52,972 WARN L253 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 253 conjuncts are in the unsatisfiable core [2024-11-08 18:08:52,979 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:08:53,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2024-11-08 18:08:53,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2024-11-08 18:08:53,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2024-11-08 18:08:53,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2024-11-08 18:08:53,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2024-11-08 18:08:53,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2024-11-08 18:08:55,302 INFO L134 CoverageAnalysis]: Checked inductivity of 567 backedges. 0 proven. 567 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:08:55,302 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:08:59,485 INFO L134 CoverageAnalysis]: Checked inductivity of 567 backedges. 0 proven. 486 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-08 18:08:59,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322141799] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:08:59,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:08:59,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 33, 23] total 99 [2024-11-08 18:08:59,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936668633] [2024-11-08 18:08:59,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:08:59,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2024-11-08 18:08:59,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:08:59,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2024-11-08 18:08:59,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=407, Invalid=9295, Unknown=0, NotChecked=0, Total=9702 [2024-11-08 18:08:59,489 INFO L87 Difference]: Start difference. First operand 146 states and 152 transitions. Second operand has 99 states, 99 states have (on average 3.6464646464646466) internal successors, (361), 99 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:09:13,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:09:13,087 INFO L93 Difference]: Finished difference Result 355 states and 376 transitions. [2024-11-08 18:09:13,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-11-08 18:09:13,088 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 3.6464646464646466) internal successors, (361), 99 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2024-11-08 18:09:13,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:09:13,090 INFO L225 Difference]: With dead ends: 355 [2024-11-08 18:09:13,091 INFO L226 Difference]: Without dead ends: 351 [2024-11-08 18:09:13,093 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 268 SyntacticMatches, 1 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5193 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=1446, Invalid=20606, Unknown=0, NotChecked=0, Total=22052 [2024-11-08 18:09:13,094 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 514 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 7983 mSolverCounterSat, 552 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 8535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 552 IncrementalHoareTripleChecker+Valid, 7983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:09:13,094 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [514 Valid, 252 Invalid, 8535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [552 Valid, 7983 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2024-11-08 18:09:13,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2024-11-08 18:09:13,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 211. [2024-11-08 18:09:13,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 1.0523809523809524) internal successors, (221), 210 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:09:13,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 221 transitions. [2024-11-08 18:09:13,203 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 221 transitions. Word has length 145 [2024-11-08 18:09:13,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:09:13,204 INFO L471 AbstractCegarLoop]: Abstraction has 211 states and 221 transitions. [2024-11-08 18:09:13,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 3.6464646464646466) internal successors, (361), 99 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:09:13,204 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 221 transitions. [2024-11-08 18:09:13,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-08 18:09:13,205 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:09:13,206 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:09:13,225 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-08 18:09:13,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-08 18:09:13,406 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:09:13,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:09:13,407 INFO L85 PathProgramCache]: Analyzing trace with hash -2062257646, now seen corresponding path program 24 times [2024-11-08 18:09:13,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:09:13,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288270130] [2024-11-08 18:09:13,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:09:13,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:09:13,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:09:14,005 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 83 proven. 98 refuted. 0 times theorem prover too weak. 405 trivial. 0 not checked. [2024-11-08 18:09:14,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:09:14,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288270130] [2024-11-08 18:09:14,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288270130] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:09:14,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960545850] [2024-11-08 18:09:14,005 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 18:09:14,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:09:14,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:09:14,007 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:09:14,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-08 18:09:14,526 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-08 18:09:14,526 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:09:14,530 INFO L255 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-08 18:09:14,533 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:09:15,185 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 90 proven. 91 refuted. 0 times theorem prover too weak. 405 trivial. 0 not checked. [2024-11-08 18:09:15,185 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:09:15,790 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 90 proven. 91 refuted. 0 times theorem prover too weak. 405 trivial. 0 not checked. [2024-11-08 18:09:15,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960545850] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:09:15,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:09:15,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 54 [2024-11-08 18:09:15,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123600408] [2024-11-08 18:09:15,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:09:15,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-08 18:09:15,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:09:15,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-08 18:09:15,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=388, Invalid=2474, Unknown=0, NotChecked=0, Total=2862 [2024-11-08 18:09:15,793 INFO L87 Difference]: Start difference. First operand 211 states and 221 transitions. Second operand has 54 states, 54 states have (on average 2.611111111111111) internal successors, (141), 54 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:09:19,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:09:19,217 INFO L93 Difference]: Finished difference Result 579 states and 612 transitions. [2024-11-08 18:09:19,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-08 18:09:19,218 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.611111111111111) internal successors, (141), 54 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2024-11-08 18:09:19,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:09:19,220 INFO L225 Difference]: With dead ends: 579 [2024-11-08 18:09:19,220 INFO L226 Difference]: Without dead ends: 288 [2024-11-08 18:09:19,221 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 281 SyntacticMatches, 11 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2823 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1173, Invalid=7383, Unknown=0, NotChecked=0, Total=8556 [2024-11-08 18:09:19,222 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 352 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 3821 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 4141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 3821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-08 18:09:19,222 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 117 Invalid, 4141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [320 Valid, 3821 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-08 18:09:19,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2024-11-08 18:09:19,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 221. [2024-11-08 18:09:19,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 1.05) internal successors, (231), 220 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:09:19,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 231 transitions. [2024-11-08 18:09:19,348 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 231 transitions. Word has length 147 [2024-11-08 18:09:19,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:09:19,349 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 231 transitions. [2024-11-08 18:09:19,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.611111111111111) internal successors, (141), 54 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:09:19,349 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 231 transitions. [2024-11-08 18:09:19,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-08 18:09:19,350 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:09:19,350 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:09:19,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-08 18:09:19,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-08 18:09:19,550 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:09:19,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:09:19,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1470246345, now seen corresponding path program 25 times [2024-11-08 18:09:19,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:09:19,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363952122] [2024-11-08 18:09:19,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:09:19,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:09:19,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:09:20,089 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 64 proven. 117 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2024-11-08 18:09:20,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:09:20,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363952122] [2024-11-08 18:09:20,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363952122] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:09:20,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515276498] [2024-11-08 18:09:20,089 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 18:09:20,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:09:20,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:09:20,091 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:09:20,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-08 18:09:20,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:09:20,303 INFO L255 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-08 18:09:20,306 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:09:20,615 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 81 proven. 100 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2024-11-08 18:09:20,615 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:09:20,918 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 81 proven. 100 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2024-11-08 18:09:20,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515276498] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:09:20,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:09:20,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 35 [2024-11-08 18:09:20,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596486806] [2024-11-08 18:09:20,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:09:20,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-08 18:09:20,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:09:20,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-08 18:09:20,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=901, Unknown=0, NotChecked=0, Total=1190 [2024-11-08 18:09:20,920 INFO L87 Difference]: Start difference. First operand 221 states and 231 transitions. Second operand has 35 states, 35 states have (on average 2.657142857142857) internal successors, (93), 35 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:09:21,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:09:21,584 INFO L93 Difference]: Finished difference Result 321 states and 335 transitions. [2024-11-08 18:09:21,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-08 18:09:21,584 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.657142857142857) internal successors, (93), 35 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2024-11-08 18:09:21,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:09:21,585 INFO L225 Difference]: With dead ends: 321 [2024-11-08 18:09:21,585 INFO L226 Difference]: Without dead ends: 166 [2024-11-08 18:09:21,586 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 266 SyntacticMatches, 20 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=317, Invalid=1015, Unknown=0, NotChecked=0, Total=1332 [2024-11-08 18:09:21,587 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 270 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 18:09:21,587 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 54 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 18:09:21,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-08 18:09:21,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 160. [2024-11-08 18:09:21,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 1.0440251572327044) internal successors, (166), 159 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:09:21,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 166 transitions. [2024-11-08 18:09:21,681 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 166 transitions. Word has length 149 [2024-11-08 18:09:21,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:09:21,681 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 166 transitions. [2024-11-08 18:09:21,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.657142857142857) internal successors, (93), 35 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:09:21,682 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 166 transitions. [2024-11-08 18:09:21,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-08 18:09:21,682 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:09:21,682 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:09:21,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-08 18:09:21,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:09:21,883 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:09:21,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:09:21,883 INFO L85 PathProgramCache]: Analyzing trace with hash 949677136, now seen corresponding path program 26 times [2024-11-08 18:09:21,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:09:21,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238177139] [2024-11-08 18:09:21,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:09:21,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:09:22,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:09:47,400 INFO L134 CoverageAnalysis]: Checked inductivity of 700 backedges. 22 proven. 678 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:09:47,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:09:47,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238177139] [2024-11-08 18:09:47,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238177139] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:09:47,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540935047] [2024-11-08 18:09:47,401 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 18:09:47,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:09:47,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:09:47,402 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:09:47,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-08 18:09:47,636 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 18:09:47,636 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:09:47,642 WARN L253 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 269 conjuncts are in the unsatisfiable core [2024-11-08 18:09:47,650 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:09:47,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2024-11-08 18:09:49,951 INFO L134 CoverageAnalysis]: Checked inductivity of 700 backedges. 0 proven. 700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:09:49,951 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:09:54,793 INFO L134 CoverageAnalysis]: Checked inductivity of 700 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-08 18:09:54,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540935047] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:09:54,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:09:54,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 36, 25] total 104 [2024-11-08 18:09:54,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272967426] [2024-11-08 18:09:54,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:09:54,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2024-11-08 18:09:54,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:09:54,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2024-11-08 18:09:54,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=515, Invalid=10197, Unknown=0, NotChecked=0, Total=10712 [2024-11-08 18:09:54,798 INFO L87 Difference]: Start difference. First operand 160 states and 166 transitions. Second operand has 104 states, 104 states have (on average 3.730769230769231) internal successors, (388), 104 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:10:11,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:10:11,904 INFO L93 Difference]: Finished difference Result 454 states and 477 transitions. [2024-11-08 18:10:11,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2024-11-08 18:10:11,905 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 3.730769230769231) internal successors, (388), 104 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2024-11-08 18:10:11,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:10:11,907 INFO L225 Difference]: With dead ends: 454 [2024-11-08 18:10:11,907 INFO L226 Difference]: Without dead ends: 450 [2024-11-08 18:10:11,909 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 463 GetRequests, 298 SyntacticMatches, 1 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6793 ImplicationChecksByTransitivity, 17.7s TimeCoverageRelationStatistics Valid=1800, Invalid=25590, Unknown=0, NotChecked=0, Total=27390 [2024-11-08 18:10:11,910 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 421 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 8940 mSolverCounterSat, 481 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 9421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 481 IncrementalHoareTripleChecker+Valid, 8940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2024-11-08 18:10:11,910 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 234 Invalid, 9421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [481 Valid, 8940 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2024-11-08 18:10:11,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2024-11-08 18:10:12,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 301. [2024-11-08 18:10:12,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 300 states have (on average 1.0533333333333332) internal successors, (316), 300 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:10:12,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 316 transitions. [2024-11-08 18:10:12,102 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 316 transitions. Word has length 159 [2024-11-08 18:10:12,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:10:12,102 INFO L471 AbstractCegarLoop]: Abstraction has 301 states and 316 transitions. [2024-11-08 18:10:12,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 3.730769230769231) internal successors, (388), 104 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:10:12,103 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 316 transitions. [2024-11-08 18:10:12,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-08 18:10:12,104 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:10:12,104 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:10:12,125 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-08 18:10:12,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-08 18:10:12,305 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:10:12,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:10:12,306 INFO L85 PathProgramCache]: Analyzing trace with hash 177879093, now seen corresponding path program 27 times [2024-11-08 18:10:12,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:10:12,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305165415] [2024-11-08 18:10:12,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:10:12,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:10:12,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:10:13,005 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 102 proven. 119 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2024-11-08 18:10:13,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:10:13,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305165415] [2024-11-08 18:10:13,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305165415] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:10:13,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511272243] [2024-11-08 18:10:13,006 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 18:10:13,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:10:13,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:10:13,007 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:10:13,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-08 18:10:13,394 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-08 18:10:13,394 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:10:13,398 INFO L255 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-08 18:10:13,400 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:10:14,108 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 121 proven. 100 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2024-11-08 18:10:14,108 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:10:14,584 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 121 proven. 100 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2024-11-08 18:10:14,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511272243] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:10:14,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:10:14,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 48 [2024-11-08 18:10:14,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21442982] [2024-11-08 18:10:14,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:10:14,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-08 18:10:14,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:10:14,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-08 18:10:14,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=404, Invalid=1852, Unknown=0, NotChecked=0, Total=2256 [2024-11-08 18:10:14,587 INFO L87 Difference]: Start difference. First operand 301 states and 316 transitions. Second operand has 48 states, 48 states have (on average 2.6041666666666665) internal successors, (125), 48 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:10:16,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:10:16,141 INFO L93 Difference]: Finished difference Result 592 states and 622 transitions. [2024-11-08 18:10:16,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-08 18:10:16,141 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.6041666666666665) internal successors, (125), 48 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2024-11-08 18:10:16,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:10:16,143 INFO L225 Difference]: With dead ends: 592 [2024-11-08 18:10:16,144 INFO L226 Difference]: Without dead ends: 251 [2024-11-08 18:10:16,145 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 278 SyntacticMatches, 21 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1655 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=619, Invalid=2687, Unknown=0, NotChecked=0, Total=3306 [2024-11-08 18:10:16,146 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 341 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 1611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 352 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-08 18:10:16,146 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 70 Invalid, 1611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [352 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-08 18:10:16,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2024-11-08 18:10:16,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 238. [2024-11-08 18:10:16,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 1.0421940928270041) internal successors, (247), 237 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:10:16,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 247 transitions. [2024-11-08 18:10:16,357 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 247 transitions. Word has length 161 [2024-11-08 18:10:16,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:10:16,357 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 247 transitions. [2024-11-08 18:10:16,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.6041666666666665) internal successors, (125), 48 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:10:16,358 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 247 transitions. [2024-11-08 18:10:16,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-11-08 18:10:16,359 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:10:16,359 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:10:16,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-08 18:10:16,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-08 18:10:16,560 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:10:16,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:10:16,561 INFO L85 PathProgramCache]: Analyzing trace with hash -213355233, now seen corresponding path program 28 times [2024-11-08 18:10:16,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:10:16,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649888449] [2024-11-08 18:10:16,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:10:16,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:10:16,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:10:17,236 INFO L134 CoverageAnalysis]: Checked inductivity of 763 backedges. 81 proven. 140 refuted. 0 times theorem prover too weak. 542 trivial. 0 not checked. [2024-11-08 18:10:17,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:10:17,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649888449] [2024-11-08 18:10:17,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649888449] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:10:17,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067661698] [2024-11-08 18:10:17,237 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 18:10:17,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:10:17,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:10:17,238 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:10:17,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-08 18:10:17,453 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 18:10:17,454 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:10:17,456 INFO L255 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-08 18:10:17,458 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:10:18,156 INFO L134 CoverageAnalysis]: Checked inductivity of 763 backedges. 100 proven. 121 refuted. 0 times theorem prover too weak. 542 trivial. 0 not checked. [2024-11-08 18:10:18,157 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:10:18,710 INFO L134 CoverageAnalysis]: Checked inductivity of 763 backedges. 100 proven. 121 refuted. 0 times theorem prover too weak. 542 trivial. 0 not checked. [2024-11-08 18:10:18,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067661698] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:10:18,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:10:18,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 48 [2024-11-08 18:10:18,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036547832] [2024-11-08 18:10:18,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:10:18,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-08 18:10:18,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:10:18,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-08 18:10:18,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=404, Invalid=1852, Unknown=0, NotChecked=0, Total=2256 [2024-11-08 18:10:18,713 INFO L87 Difference]: Start difference. First operand 238 states and 247 transitions. Second operand has 48 states, 48 states have (on average 2.5416666666666665) internal successors, (122), 48 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:10:20,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:10:20,126 INFO L93 Difference]: Finished difference Result 250 states and 259 transitions. [2024-11-08 18:10:20,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-08 18:10:20,127 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.5416666666666665) internal successors, (122), 48 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2024-11-08 18:10:20,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:10:20,129 INFO L225 Difference]: With dead ends: 250 [2024-11-08 18:10:20,129 INFO L226 Difference]: Without dead ends: 180 [2024-11-08 18:10:20,129 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 285 SyntacticMatches, 22 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2027 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=654, Invalid=3006, Unknown=0, NotChecked=0, Total=3660 [2024-11-08 18:10:20,130 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 383 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1606 mSolverCounterSat, 379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 1985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 1606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:10:20,130 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 67 Invalid, 1985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [379 Valid, 1606 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-08 18:10:20,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-11-08 18:10:20,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 174. [2024-11-08 18:10:20,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 1.0404624277456647) internal successors, (180), 173 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:10:20,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 180 transitions. [2024-11-08 18:10:20,241 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 180 transitions. Word has length 165 [2024-11-08 18:10:20,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:10:20,241 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 180 transitions. [2024-11-08 18:10:20,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.5416666666666665) internal successors, (122), 48 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:10:20,241 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 180 transitions. [2024-11-08 18:10:20,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-08 18:10:20,242 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:10:20,242 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:10:20,262 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-08 18:10:20,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:10:20,443 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:10:20,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:10:20,443 INFO L85 PathProgramCache]: Analyzing trace with hash 80864755, now seen corresponding path program 29 times [2024-11-08 18:10:20,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:10:20,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224677785] [2024-11-08 18:10:20,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:10:20,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:10:20,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:10:50,444 INFO L134 CoverageAnalysis]: Checked inductivity of 847 backedges. 72 proven. 775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:10:50,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:10:50,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224677785] [2024-11-08 18:10:50,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224677785] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:10:50,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169156710] [2024-11-08 18:10:50,445 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 18:10:50,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:10:50,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:10:50,446 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:10:50,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-08 18:10:53,570 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-11-08 18:10:53,570 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:10:53,581 WARN L253 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 301 conjuncts are in the unsatisfiable core [2024-11-08 18:10:53,589 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:10:53,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2024-11-08 18:10:53,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2024-11-08 18:10:53,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2024-11-08 18:10:53,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2024-11-08 18:10:55,732 INFO L134 CoverageAnalysis]: Checked inductivity of 847 backedges. 0 proven. 847 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:10:55,732 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:11:01,501 INFO L134 CoverageAnalysis]: Checked inductivity of 847 backedges. 0 proven. 726 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-08 18:11:01,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169156710] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:11:01,502 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:11:01,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 39, 27] total 109 [2024-11-08 18:11:01,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848404519] [2024-11-08 18:11:01,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:11:01,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2024-11-08 18:11:01,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:11:01,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2024-11-08 18:11:01,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=584, Invalid=11188, Unknown=0, NotChecked=0, Total=11772 [2024-11-08 18:11:01,505 INFO L87 Difference]: Start difference. First operand 174 states and 180 transitions. Second operand has 109 states, 109 states have (on average 3.8073394495412844) internal successors, (415), 109 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:11:18,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:11:18,161 INFO L93 Difference]: Finished difference Result 419 states and 440 transitions. [2024-11-08 18:11:18,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2024-11-08 18:11:18,162 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 109 states have (on average 3.8073394495412844) internal successors, (415), 109 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 173 [2024-11-08 18:11:18,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:11:18,164 INFO L225 Difference]: With dead ends: 419 [2024-11-08 18:11:18,164 INFO L226 Difference]: Without dead ends: 415 [2024-11-08 18:11:18,166 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 326 SyntacticMatches, 3 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5715 ImplicationChecksByTransitivity, 17.7s TimeCoverageRelationStatistics Valid=1586, Invalid=22594, Unknown=0, NotChecked=0, Total=24180 [2024-11-08 18:11:18,167 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 691 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 9164 mSolverCounterSat, 728 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 9892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 728 IncrementalHoareTripleChecker+Valid, 9164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2024-11-08 18:11:18,167 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [691 Valid, 239 Invalid, 9892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [728 Valid, 9164 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2024-11-08 18:11:18,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2024-11-08 18:11:18,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 251. [2024-11-08 18:11:18,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 250 states have (on average 1.044) internal successors, (261), 250 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:11:18,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 261 transitions. [2024-11-08 18:11:18,354 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 261 transitions. Word has length 173 [2024-11-08 18:11:18,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:11:18,355 INFO L471 AbstractCegarLoop]: Abstraction has 251 states and 261 transitions. [2024-11-08 18:11:18,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 109 states, 109 states have (on average 3.8073394495412844) internal successors, (415), 109 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:11:18,355 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 261 transitions. [2024-11-08 18:11:18,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-08 18:11:18,357 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:11:18,357 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:11:18,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-08 18:11:18,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:11:18,558 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:11:18,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:11:18,558 INFO L85 PathProgramCache]: Analyzing trace with hash 65160472, now seen corresponding path program 30 times [2024-11-08 18:11:18,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:11:18,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365932020] [2024-11-08 18:11:18,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:11:18,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:11:18,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:19,224 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 123 proven. 142 refuted. 0 times theorem prover too weak. 605 trivial. 0 not checked. [2024-11-08 18:11:19,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:11:19,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365932020] [2024-11-08 18:11:19,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365932020] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:11:19,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339293962] [2024-11-08 18:11:19,224 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 18:11:19,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:11:19,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:11:19,226 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:11:19,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-08 18:11:19,765 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-11-08 18:11:19,765 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:11:19,770 INFO L255 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-08 18:11:19,772 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:11:20,588 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 144 proven. 121 refuted. 0 times theorem prover too weak. 605 trivial. 0 not checked. [2024-11-08 18:11:20,588 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:11:21,137 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 144 proven. 121 refuted. 0 times theorem prover too weak. 605 trivial. 0 not checked. [2024-11-08 18:11:21,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339293962] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:11:21,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:11:21,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 52 [2024-11-08 18:11:21,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678936240] [2024-11-08 18:11:21,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:11:21,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-08 18:11:21,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:11:21,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-08 18:11:21,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=470, Invalid=2182, Unknown=0, NotChecked=0, Total=2652 [2024-11-08 18:11:21,140 INFO L87 Difference]: Start difference. First operand 251 states and 261 transitions. Second operand has 52 states, 52 states have (on average 2.5576923076923075) internal successors, (133), 52 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:11:22,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:11:22,993 INFO L93 Difference]: Finished difference Result 618 states and 647 transitions. [2024-11-08 18:11:22,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-08 18:11:22,993 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.5576923076923075) internal successors, (133), 52 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2024-11-08 18:11:22,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:11:22,995 INFO L225 Difference]: With dead ends: 618 [2024-11-08 18:11:22,995 INFO L226 Difference]: Without dead ends: 271 [2024-11-08 18:11:22,996 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 302 SyntacticMatches, 23 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1980 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=723, Invalid=3183, Unknown=0, NotChecked=0, Total=3906 [2024-11-08 18:11:22,997 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 645 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1375 mSolverCounterSat, 657 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 2032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 657 IncrementalHoareTripleChecker+Valid, 1375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:11:22,997 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [645 Valid, 64 Invalid, 2032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [657 Valid, 1375 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-08 18:11:22,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2024-11-08 18:11:23,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 258. [2024-11-08 18:11:23,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 257 states have (on average 1.038910505836576) internal successors, (267), 257 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:11:23,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 267 transitions. [2024-11-08 18:11:23,333 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 267 transitions. Word has length 175 [2024-11-08 18:11:23,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:11:23,334 INFO L471 AbstractCegarLoop]: Abstraction has 258 states and 267 transitions. [2024-11-08 18:11:23,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.5576923076923075) internal successors, (133), 52 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:11:23,334 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 267 transitions. [2024-11-08 18:11:23,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-08 18:11:23,335 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:11:23,336 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:11:23,363 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-08 18:11:23,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:11:23,536 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:11:23,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:11:23,537 INFO L85 PathProgramCache]: Analyzing trace with hash -35604350, now seen corresponding path program 31 times [2024-11-08 18:11:23,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:11:23,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987577218] [2024-11-08 18:11:23,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:11:23,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:11:23,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:24,380 INFO L134 CoverageAnalysis]: Checked inductivity of 916 backedges. 100 proven. 165 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2024-11-08 18:11:24,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:11:24,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987577218] [2024-11-08 18:11:24,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987577218] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:11:24,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811324418] [2024-11-08 18:11:24,381 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 18:11:24,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:11:24,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:11:24,384 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:11:24,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-08 18:11:24,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:24,646 INFO L255 TraceCheckSpWp]: Trace formula consists of 596 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-08 18:11:24,649 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:11:25,145 INFO L134 CoverageAnalysis]: Checked inductivity of 916 backedges. 121 proven. 144 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2024-11-08 18:11:25,145 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:11:25,610 INFO L134 CoverageAnalysis]: Checked inductivity of 916 backedges. 121 proven. 144 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2024-11-08 18:11:25,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811324418] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:11:25,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:11:25,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 41 [2024-11-08 18:11:25,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814822920] [2024-11-08 18:11:25,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:11:25,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-08 18:11:25,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:11:25,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-08 18:11:25,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=393, Invalid=1247, Unknown=0, NotChecked=0, Total=1640 [2024-11-08 18:11:25,613 INFO L87 Difference]: Start difference. First operand 258 states and 267 transitions. Second operand has 41 states, 41 states have (on average 2.5609756097560976) internal successors, (105), 41 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:11:26,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:11:26,415 INFO L93 Difference]: Finished difference Result 270 states and 279 transitions. [2024-11-08 18:11:26,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-08 18:11:26,416 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.5609756097560976) internal successors, (105), 41 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2024-11-08 18:11:26,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:11:26,417 INFO L225 Difference]: With dead ends: 270 [2024-11-08 18:11:26,417 INFO L226 Difference]: Without dead ends: 194 [2024-11-08 18:11:26,418 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 320 SyntacticMatches, 24 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1200 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=425, Invalid=1381, Unknown=0, NotChecked=0, Total=1806 [2024-11-08 18:11:26,418 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 300 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 18:11:26,418 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 39 Invalid, 752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 18:11:26,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-11-08 18:11:26,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 188. [2024-11-08 18:11:26,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.0374331550802138) internal successors, (194), 187 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:11:26,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 194 transitions. [2024-11-08 18:11:26,544 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 194 transitions. Word has length 179 [2024-11-08 18:11:26,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:11:26,545 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 194 transitions. [2024-11-08 18:11:26,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.5609756097560976) internal successors, (105), 41 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:11:26,545 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 194 transitions. [2024-11-08 18:11:26,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-11-08 18:11:26,546 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:11:26,546 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:11:26,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-11-08 18:11:26,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-08 18:11:26,747 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:11:26,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:11:26,747 INFO L85 PathProgramCache]: Analyzing trace with hash 171116118, now seen corresponding path program 32 times [2024-11-08 18:11:26,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:11:26,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380506738] [2024-11-08 18:11:26,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:11:26,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:11:27,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:11:59,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1008 backedges. 154 proven. 854 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:11:59,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:11:59,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380506738] [2024-11-08 18:11:59,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380506738] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:11:59,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402239832] [2024-11-08 18:11:59,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 18:11:59,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:11:59,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:11:59,531 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:11:59,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-08 18:11:59,813 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 18:11:59,813 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:11:59,820 WARN L253 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 321 conjuncts are in the unsatisfiable core [2024-11-08 18:11:59,825 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:12:00,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2024-11-08 18:12:03,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1008 backedges. 0 proven. 1008 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:12:03,390 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:12:10,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1008 backedges. 0 proven. 864 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-08 18:12:10,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402239832] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:12:10,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:12:10,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 42, 29] total 132 [2024-11-08 18:12:10,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246470880] [2024-11-08 18:12:10,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:12:10,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 132 states [2024-11-08 18:12:10,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:12:10,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2024-11-08 18:12:10,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=710, Invalid=16582, Unknown=0, NotChecked=0, Total=17292 [2024-11-08 18:12:10,132 INFO L87 Difference]: Start difference. First operand 188 states and 194 transitions. Second operand has 132 states, 132 states have (on average 3.5833333333333335) internal successors, (473), 132 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:12:30,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:12:30,465 INFO L93 Difference]: Finished difference Result 450 states and 471 transitions. [2024-11-08 18:12:30,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2024-11-08 18:12:30,466 INFO L78 Accepts]: Start accepts. Automaton has has 132 states, 132 states have (on average 3.5833333333333335) internal successors, (473), 132 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 187 [2024-11-08 18:12:30,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:12:30,468 INFO L225 Difference]: With dead ends: 450 [2024-11-08 18:12:30,468 INFO L226 Difference]: Without dead ends: 446 [2024-11-08 18:12:30,470 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 340 SyntacticMatches, 1 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9903 ImplicationChecksByTransitivity, 21.4s TimeCoverageRelationStatistics Valid=1836, Invalid=31106, Unknown=0, NotChecked=0, Total=32942 [2024-11-08 18:12:30,471 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 702 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 12716 mSolverCounterSat, 757 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 13473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 757 IncrementalHoareTripleChecker+Valid, 12716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2024-11-08 18:12:30,471 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 301 Invalid, 13473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [757 Valid, 12716 Invalid, 0 Unknown, 0 Unchecked, 12.4s Time] [2024-11-08 18:12:30,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2024-11-08 18:12:30,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 271. [2024-11-08 18:12:30,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 270 states have (on average 1.0407407407407407) internal successors, (281), 270 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:12:30,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 281 transitions. [2024-11-08 18:12:30,658 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 281 transitions. Word has length 187 [2024-11-08 18:12:30,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:12:30,658 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 281 transitions. [2024-11-08 18:12:30,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 132 states, 132 states have (on average 3.5833333333333335) internal successors, (473), 132 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:12:30,658 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 281 transitions. [2024-11-08 18:12:30,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-11-08 18:12:30,659 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:12:30,659 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:12:30,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-11-08 18:12:30,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-08 18:12:30,860 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:12:30,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:12:30,860 INFO L85 PathProgramCache]: Analyzing trace with hash 301058235, now seen corresponding path program 33 times [2024-11-08 18:12:30,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:12:30,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103235266] [2024-11-08 18:12:30,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:12:30,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:12:30,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:31,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1033 backedges. 146 proven. 167 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2024-11-08 18:12:31,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:12:31,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103235266] [2024-11-08 18:12:31,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103235266] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:12:31,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996737947] [2024-11-08 18:12:31,789 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 18:12:31,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:12:31,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:12:31,790 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:12:31,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-08 18:12:32,285 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2024-11-08 18:12:32,285 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:12:32,291 INFO L255 TraceCheckSpWp]: Trace formula consists of 626 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-08 18:12:32,294 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:12:33,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1033 backedges. 169 proven. 144 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2024-11-08 18:12:33,350 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:12:33,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1033 backedges. 169 proven. 144 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2024-11-08 18:12:33,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996737947] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:12:33,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:12:33,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 56 [2024-11-08 18:12:33,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193916396] [2024-11-08 18:12:33,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:12:33,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-08 18:12:33,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:12:33,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-08 18:12:33,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=541, Invalid=2539, Unknown=0, NotChecked=0, Total=3080 [2024-11-08 18:12:33,988 INFO L87 Difference]: Start difference. First operand 271 states and 281 transitions. Second operand has 56 states, 56 states have (on average 2.517857142857143) internal successors, (141), 56 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:12:36,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:12:36,192 INFO L93 Difference]: Finished difference Result 666 states and 695 transitions. [2024-11-08 18:12:36,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-08 18:12:36,192 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.517857142857143) internal successors, (141), 56 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 189 [2024-11-08 18:12:36,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:12:36,194 INFO L225 Difference]: With dead ends: 666 [2024-11-08 18:12:36,194 INFO L226 Difference]: Without dead ends: 291 [2024-11-08 18:12:36,195 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 326 SyntacticMatches, 25 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2334 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=835, Invalid=3721, Unknown=0, NotChecked=0, Total=4556 [2024-11-08 18:12:36,195 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 578 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1870 mSolverCounterSat, 590 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 2460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 590 IncrementalHoareTripleChecker+Valid, 1870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-08 18:12:36,195 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [578 Valid, 80 Invalid, 2460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [590 Valid, 1870 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-08 18:12:36,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2024-11-08 18:12:36,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 278. [2024-11-08 18:12:36,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 277 states have (on average 1.036101083032491) internal successors, (287), 277 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:12:36,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 287 transitions. [2024-11-08 18:12:36,426 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 287 transitions. Word has length 189 [2024-11-08 18:12:36,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:12:36,427 INFO L471 AbstractCegarLoop]: Abstraction has 278 states and 287 transitions. [2024-11-08 18:12:36,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.517857142857143) internal successors, (141), 56 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:12:36,427 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 287 transitions. [2024-11-08 18:12:36,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-11-08 18:12:36,428 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:12:36,428 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:12:36,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-11-08 18:12:36,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-08 18:12:36,628 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:12:36,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:12:36,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1492849317, now seen corresponding path program 34 times [2024-11-08 18:12:36,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:12:36,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451961741] [2024-11-08 18:12:36,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:12:36,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:12:36,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:12:37,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 121 proven. 192 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2024-11-08 18:12:37,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:12:37,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451961741] [2024-11-08 18:12:37,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451961741] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:12:37,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548792036] [2024-11-08 18:12:37,430 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 18:12:37,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:12:37,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:12:37,432 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:12:37,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-08 18:12:37,699 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 18:12:37,699 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:12:37,701 INFO L255 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-08 18:12:37,704 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:12:38,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 144 proven. 169 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2024-11-08 18:12:38,595 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:12:39,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 144 proven. 169 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2024-11-08 18:12:39,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548792036] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:12:39,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:12:39,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 56 [2024-11-08 18:12:39,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882599028] [2024-11-08 18:12:39,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:12:39,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-08 18:12:39,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:12:39,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-08 18:12:39,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=541, Invalid=2539, Unknown=0, NotChecked=0, Total=3080 [2024-11-08 18:12:39,439 INFO L87 Difference]: Start difference. First operand 278 states and 287 transitions. Second operand has 56 states, 56 states have (on average 2.4642857142857144) internal successors, (138), 56 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:12:41,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:12:41,160 INFO L93 Difference]: Finished difference Result 290 states and 299 transitions. [2024-11-08 18:12:41,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-08 18:12:41,161 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.4642857142857144) internal successors, (138), 56 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 193 [2024-11-08 18:12:41,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:12:41,163 INFO L225 Difference]: With dead ends: 290 [2024-11-08 18:12:41,163 INFO L226 Difference]: Without dead ends: 208 [2024-11-08 18:12:41,163 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 333 SyntacticMatches, 26 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2841 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=874, Invalid=4096, Unknown=0, NotChecked=0, Total=4970 [2024-11-08 18:12:41,164 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 426 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1992 mSolverCounterSat, 419 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 2411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 419 IncrementalHoareTripleChecker+Valid, 1992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-08 18:12:41,164 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 69 Invalid, 2411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [419 Valid, 1992 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-08 18:12:41,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-11-08 18:12:41,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 202. [2024-11-08 18:12:41,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 1.0348258706467661) internal successors, (208), 201 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:12:41,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 208 transitions. [2024-11-08 18:12:41,316 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 208 transitions. Word has length 193 [2024-11-08 18:12:41,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:12:41,316 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 208 transitions. [2024-11-08 18:12:41,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.4642857142857144) internal successors, (138), 56 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:12:41,317 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 208 transitions. [2024-11-08 18:12:41,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-11-08 18:12:41,318 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:12:41,318 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:12:41,343 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-08 18:12:41,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-08 18:12:41,519 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:12:41,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:12:41,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1736146297, now seen corresponding path program 35 times [2024-11-08 18:12:41,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:12:41,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441769421] [2024-11-08 18:12:41,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:12:41,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:12:42,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:13:24,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1183 backedges. 62 proven. 1121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:13:24,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:13:24,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441769421] [2024-11-08 18:13:24,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441769421] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:13:24,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464819479] [2024-11-08 18:13:24,138 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 18:13:24,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:13:24,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:13:24,141 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:13:24,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-08 18:13:27,103 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2024-11-08 18:13:27,103 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:13:27,118 WARN L253 TraceCheckSpWp]: Trace formula consists of 666 conjuncts, 365 conjuncts are in the unsatisfiable core [2024-11-08 18:13:27,129 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:13:27,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2024-11-08 18:13:27,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2024-11-08 18:13:27,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2024-11-08 18:13:27,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2024-11-08 18:13:27,264 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2024-11-08 18:13:27,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2024-11-08 18:13:27,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2024-11-08 18:13:27,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2024-11-08 18:13:27,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2024-11-08 18:13:41,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1183 backedges. 0 proven. 1183 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:13:41,478 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:14:02,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1183 backedges. 0 proven. 1014 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2024-11-08 18:14:02,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464819479] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:14:02,244 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:14:02,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 73, 59] total 186 [2024-11-08 18:14:02,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239597574] [2024-11-08 18:14:02,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:14:02,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 186 states [2024-11-08 18:14:02,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:14:02,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 186 interpolants. [2024-11-08 18:14:02,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1467, Invalid=32943, Unknown=0, NotChecked=0, Total=34410 [2024-11-08 18:14:02,250 INFO L87 Difference]: Start difference. First operand 202 states and 208 transitions. Second operand has 186 states, 186 states have (on average 2.860215053763441) internal successors, (532), 186 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:15:04,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:15:04,406 INFO L93 Difference]: Finished difference Result 451 states and 469 transitions. [2024-11-08 18:15:04,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2024-11-08 18:15:04,406 INFO L78 Accepts]: Start accepts. Automaton has has 186 states, 186 states have (on average 2.860215053763441) internal successors, (532), 186 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 201 [2024-11-08 18:15:04,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:15:04,410 INFO L225 Difference]: With dead ends: 451 [2024-11-08 18:15:04,410 INFO L226 Difference]: Without dead ends: 447 [2024-11-08 18:15:04,414 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 621 GetRequests, 321 SyntacticMatches, 1 SemanticMatches, 299 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23990 ImplicationChecksByTransitivity, 79.6s TimeCoverageRelationStatistics Valid=6264, Invalid=84036, Unknown=0, NotChecked=0, Total=90300 [2024-11-08 18:15:04,415 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 894 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 15740 mSolverCounterSat, 986 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 16726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 986 IncrementalHoareTripleChecker+Valid, 15740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.4s IncrementalHoareTripleChecker+Time [2024-11-08 18:15:04,415 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [894 Valid, 230 Invalid, 16726 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [986 Valid, 15740 Invalid, 0 Unknown, 0 Unchecked, 21.4s Time] [2024-11-08 18:15:04,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2024-11-08 18:15:04,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 379. [2024-11-08 18:15:04,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 1.0423280423280423) internal successors, (394), 378 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:15:04,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 394 transitions. [2024-11-08 18:15:04,766 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 394 transitions. Word has length 201 [2024-11-08 18:15:04,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:15:04,766 INFO L471 AbstractCegarLoop]: Abstraction has 379 states and 394 transitions. [2024-11-08 18:15:04,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 186 states, 186 states have (on average 2.860215053763441) internal successors, (532), 186 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:15:04,767 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 394 transitions. [2024-11-08 18:15:04,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-11-08 18:15:04,769 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:15:04,769 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:15:04,792 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-08 18:15:04,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-08 18:15:04,970 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:15:04,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:15:04,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1325003550, now seen corresponding path program 36 times [2024-11-08 18:15:04,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:15:04,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609360249] [2024-11-08 18:15:04,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:15:04,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:15:05,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:15:05,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 171 proven. 194 refuted. 0 times theorem prover too weak. 845 trivial. 0 not checked. [2024-11-08 18:15:05,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:15:05,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609360249] [2024-11-08 18:15:05,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609360249] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:15:05,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715187434] [2024-11-08 18:15:05,932 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 18:15:05,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:15:05,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:15:05,934 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:15:05,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-08 18:15:07,371 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2024-11-08 18:15:07,371 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:15:07,377 INFO L255 TraceCheckSpWp]: Trace formula consists of 672 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-08 18:15:07,380 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:15:08,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 182 proven. 183 refuted. 0 times theorem prover too weak. 845 trivial. 0 not checked. [2024-11-08 18:15:08,556 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:15:09,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 182 proven. 183 refuted. 0 times theorem prover too weak. 845 trivial. 0 not checked. [2024-11-08 18:15:09,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715187434] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:15:09,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:15:09,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 74 [2024-11-08 18:15:09,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917013220] [2024-11-08 18:15:09,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:15:09,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-11-08 18:15:09,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:15:09,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-11-08 18:15:09,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=708, Invalid=4694, Unknown=0, NotChecked=0, Total=5402 [2024-11-08 18:15:09,693 INFO L87 Difference]: Start difference. First operand 379 states and 394 transitions. Second operand has 74 states, 74 states have (on average 2.554054054054054) internal successors, (189), 74 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:15:15,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:15:15,635 INFO L93 Difference]: Finished difference Result 853 states and 888 transitions. [2024-11-08 18:15:15,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2024-11-08 18:15:15,636 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 2.554054054054054) internal successors, (189), 74 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 203 [2024-11-08 18:15:15,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:15:15,638 INFO L225 Difference]: With dead ends: 853 [2024-11-08 18:15:15,638 INFO L226 Difference]: Without dead ends: 422 [2024-11-08 18:15:15,640 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 389 SyntacticMatches, 15 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5661 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2197, Invalid=14315, Unknown=0, NotChecked=0, Total=16512 [2024-11-08 18:15:15,640 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 417 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 6192 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 6635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 6192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-08 18:15:15,641 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 128 Invalid, 6635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 6192 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-08 18:15:15,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2024-11-08 18:15:15,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 301. [2024-11-08 18:15:15,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 300 states have (on average 1.0366666666666666) internal successors, (311), 300 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:15:15,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 311 transitions. [2024-11-08 18:15:15,917 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 311 transitions. Word has length 203 [2024-11-08 18:15:15,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:15:15,917 INFO L471 AbstractCegarLoop]: Abstraction has 301 states and 311 transitions. [2024-11-08 18:15:15,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 2.554054054054054) internal successors, (189), 74 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:15:15,918 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 311 transitions. [2024-11-08 18:15:15,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-11-08 18:15:15,919 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:15:15,919 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:15:15,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2024-11-08 18:15:16,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-08 18:15:16,119 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:15:16,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:15:16,120 INFO L85 PathProgramCache]: Analyzing trace with hash 860315715, now seen corresponding path program 37 times [2024-11-08 18:15:16,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:15:16,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404790026] [2024-11-08 18:15:16,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:15:16,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:15:16,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:15:16,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1237 backedges. 144 proven. 221 refuted. 0 times theorem prover too weak. 872 trivial. 0 not checked. [2024-11-08 18:15:16,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:15:16,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404790026] [2024-11-08 18:15:16,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404790026] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:15:16,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192507539] [2024-11-08 18:15:16,999 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 18:15:16,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:15:16,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:15:17,000 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:15:17,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-08 18:15:17,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:15:17,308 INFO L255 TraceCheckSpWp]: Trace formula consists of 682 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-08 18:15:17,310 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:15:17,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1237 backedges. 169 proven. 196 refuted. 0 times theorem prover too weak. 872 trivial. 0 not checked. [2024-11-08 18:15:17,802 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:15:18,313 INFO L134 CoverageAnalysis]: Checked inductivity of 1237 backedges. 169 proven. 196 refuted. 0 times theorem prover too weak. 872 trivial. 0 not checked. [2024-11-08 18:15:18,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192507539] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:15:18,314 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:15:18,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 47 [2024-11-08 18:15:18,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950406628] [2024-11-08 18:15:18,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:15:18,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-08 18:15:18,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:15:18,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-08 18:15:18,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=513, Invalid=1649, Unknown=0, NotChecked=0, Total=2162 [2024-11-08 18:15:18,316 INFO L87 Difference]: Start difference. First operand 301 states and 311 transitions. Second operand has 47 states, 47 states have (on average 2.4893617021276597) internal successors, (117), 47 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:15:19,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:15:19,409 INFO L93 Difference]: Finished difference Result 433 states and 447 transitions. [2024-11-08 18:15:19,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-08 18:15:19,410 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.4893617021276597) internal successors, (117), 47 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 205 [2024-11-08 18:15:19,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:15:19,411 INFO L225 Difference]: With dead ends: 433 [2024-11-08 18:15:19,411 INFO L226 Difference]: Without dead ends: 222 [2024-11-08 18:15:19,412 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 366 SyntacticMatches, 28 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1613 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=549, Invalid=1803, Unknown=0, NotChecked=0, Total=2352 [2024-11-08 18:15:19,413 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 281 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 896 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 1092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 18:15:19,413 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 99 Invalid, 1092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 896 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 18:15:19,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-11-08 18:15:19,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 216. [2024-11-08 18:15:19,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 1.0325581395348837) internal successors, (222), 215 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:15:19,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 222 transitions. [2024-11-08 18:15:19,687 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 222 transitions. Word has length 205 [2024-11-08 18:15:19,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:15:19,687 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 222 transitions. [2024-11-08 18:15:19,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.4893617021276597) internal successors, (117), 47 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:15:19,687 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 222 transitions. [2024-11-08 18:15:19,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-08 18:15:19,689 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:15:19,689 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:15:19,715 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-11-08 18:15:19,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-08 18:15:19,894 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:15:19,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:15:19,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1835762852, now seen corresponding path program 38 times [2024-11-08 18:15:19,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:15:19,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676825125] [2024-11-08 18:15:19,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:15:19,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:15:20,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:16:09,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1372 backedges. 132 proven. 1240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:16:09,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:16:09,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676825125] [2024-11-08 18:16:09,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676825125] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:16:09,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036955716] [2024-11-08 18:16:09,803 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 18:16:09,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:16:09,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:16:09,805 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:16:09,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-08 18:16:10,151 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 18:16:10,151 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:16:10,160 WARN L253 TraceCheckSpWp]: Trace formula consists of 712 conjuncts, 373 conjuncts are in the unsatisfiable core [2024-11-08 18:16:10,167 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:16:10,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2024-11-08 18:16:12,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1372 backedges. 0 proven. 1372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 18:16:12,809 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:16:23,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1372 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-11-08 18:16:23,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036955716] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:16:23,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:16:23,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 48, 33] total 137 [2024-11-08 18:16:23,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724547176] [2024-11-08 18:16:23,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:16:23,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 137 states [2024-11-08 18:16:23,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:16:23,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2024-11-08 18:16:23,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=17964, Unknown=0, NotChecked=0, Total=18632 [2024-11-08 18:16:23,680 INFO L87 Difference]: Start difference. First operand 216 states and 222 transitions. Second operand has 137 states, 137 states have (on average 3.7737226277372264) internal successors, (517), 137 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:16:59,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:16:59,139 INFO L93 Difference]: Finished difference Result 515 states and 536 transitions. [2024-11-08 18:16:59,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2024-11-08 18:16:59,140 INFO L78 Accepts]: Start accepts. Automaton has has 137 states, 137 states have (on average 3.7737226277372264) internal successors, (517), 137 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2024-11-08 18:16:59,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:16:59,142 INFO L225 Difference]: With dead ends: 515 [2024-11-08 18:16:59,142 INFO L226 Difference]: Without dead ends: 511 [2024-11-08 18:16:59,144 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 611 GetRequests, 405 SyntacticMatches, 1 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8757 ImplicationChecksByTransitivity, 36.1s TimeCoverageRelationStatistics Valid=2724, Invalid=39918, Unknown=0, NotChecked=0, Total=42642 [2024-11-08 18:16:59,144 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 1016 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 17437 mSolverCounterSat, 1083 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1016 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 18520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1083 IncrementalHoareTripleChecker+Valid, 17437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.9s IncrementalHoareTripleChecker+Time [2024-11-08 18:16:59,144 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1016 Valid, 360 Invalid, 18520 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1083 Valid, 17437 Invalid, 0 Unknown, 0 Unchecked, 18.9s Time] [2024-11-08 18:16:59,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2024-11-08 18:16:59,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 311. [2024-11-08 18:16:59,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 310 states have (on average 1.0354838709677419) internal successors, (321), 310 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:16:59,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 321 transitions. [2024-11-08 18:16:59,504 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 321 transitions. Word has length 215 [2024-11-08 18:16:59,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:16:59,504 INFO L471 AbstractCegarLoop]: Abstraction has 311 states and 321 transitions. [2024-11-08 18:16:59,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 137 states, 137 states have (on average 3.7737226277372264) internal successors, (517), 137 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:16:59,505 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 321 transitions. [2024-11-08 18:16:59,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-11-08 18:16:59,506 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:16:59,506 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:16:59,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2024-11-08 18:16:59,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-08 18:16:59,707 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:16:59,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:16:59,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1364718657, now seen corresponding path program 39 times [2024-11-08 18:16:59,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:16:59,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673542672] [2024-11-08 18:16:59,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:16:59,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:16:59,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:17:00,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1401 backedges. 198 proven. 223 refuted. 0 times theorem prover too weak. 980 trivial. 0 not checked. [2024-11-08 18:17:00,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:17:00,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673542672] [2024-11-08 18:17:00,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673542672] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:17:00,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133708467] [2024-11-08 18:17:00,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 18:17:00,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:17:00,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:17:00,802 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:17:00,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-08 18:17:01,462 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2024-11-08 18:17:01,462 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:17:01,469 INFO L255 TraceCheckSpWp]: Trace formula consists of 718 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-08 18:17:01,472 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:17:03,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1401 backedges. 210 proven. 211 refuted. 0 times theorem prover too weak. 980 trivial. 0 not checked. [2024-11-08 18:17:03,076 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:17:04,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1401 backedges. 210 proven. 211 refuted. 0 times theorem prover too weak. 980 trivial. 0 not checked. [2024-11-08 18:17:04,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133708467] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:17:04,404 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:17:04,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 79 [2024-11-08 18:17:04,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833232302] [2024-11-08 18:17:04,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:17:04,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2024-11-08 18:17:04,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:17:04,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2024-11-08 18:17:04,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=803, Invalid=5359, Unknown=0, NotChecked=0, Total=6162 [2024-11-08 18:17:04,407 INFO L87 Difference]: Start difference. First operand 311 states and 321 transitions. Second operand has 79 states, 79 states have (on average 2.518987341772152) internal successors, (199), 79 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:17:10,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:17:10,680 INFO L93 Difference]: Finished difference Result 849 states and 882 transitions. [2024-11-08 18:17:10,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2024-11-08 18:17:10,681 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 2.518987341772152) internal successors, (199), 79 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 217 [2024-11-08 18:17:10,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:17:10,683 INFO L225 Difference]: With dead ends: 849 [2024-11-08 18:17:10,683 INFO L226 Difference]: Without dead ends: 418 [2024-11-08 18:17:10,685 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 416 SyntacticMatches, 16 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6523 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=2503, Invalid=16403, Unknown=0, NotChecked=0, Total=18906 [2024-11-08 18:17:10,686 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 543 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 5995 mSolverCounterSat, 554 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 6549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 554 IncrementalHoareTripleChecker+Valid, 5995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-08 18:17:10,686 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 139 Invalid, 6549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [554 Valid, 5995 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-08 18:17:10,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2024-11-08 18:17:11,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 321. [2024-11-08 18:17:11,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 320 states have (on average 1.034375) internal successors, (331), 320 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:17:11,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 331 transitions. [2024-11-08 18:17:11,121 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 331 transitions. Word has length 217 [2024-11-08 18:17:11,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:17:11,121 INFO L471 AbstractCegarLoop]: Abstraction has 321 states and 331 transitions. [2024-11-08 18:17:11,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 2.518987341772152) internal successors, (199), 79 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:17:11,121 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 331 transitions. [2024-11-08 18:17:11,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-11-08 18:17:11,123 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:17:11,123 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:17:11,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2024-11-08 18:17:11,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2024-11-08 18:17:11,324 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:17:11,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:17:11,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1902203738, now seen corresponding path program 40 times [2024-11-08 18:17:11,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:17:11,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852092254] [2024-11-08 18:17:11,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:17:11,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:17:11,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:17:12,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1430 backedges. 169 proven. 252 refuted. 0 times theorem prover too weak. 1009 trivial. 0 not checked. [2024-11-08 18:17:12,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 18:17:12,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852092254] [2024-11-08 18:17:12,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852092254] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:17:12,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651476789] [2024-11-08 18:17:12,353 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 18:17:12,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:17:12,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:17:12,354 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:17:12,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-08 18:17:12,685 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 18:17:12,685 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 18:17:12,690 INFO L255 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-08 18:17:12,694 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:17:14,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1430 backedges. 225 proven. 196 refuted. 0 times theorem prover too weak. 1009 trivial. 0 not checked. [2024-11-08 18:17:14,151 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:17:15,568 INFO L134 CoverageAnalysis]: Checked inductivity of 1430 backedges. 225 proven. 196 refuted. 0 times theorem prover too weak. 1009 trivial. 0 not checked. [2024-11-08 18:17:15,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651476789] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 18:17:15,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 18:17:15,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 79 [2024-11-08 18:17:15,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437856933] [2024-11-08 18:17:15,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 18:17:15,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2024-11-08 18:17:15,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 18:17:15,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2024-11-08 18:17:15,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=817, Invalid=5345, Unknown=0, NotChecked=0, Total=6162 [2024-11-08 18:17:15,571 INFO L87 Difference]: Start difference. First operand 321 states and 331 transitions. Second operand has 79 states, 79 states have (on average 2.4936708860759493) internal successors, (197), 79 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:17:17,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:17:17,521 INFO L93 Difference]: Finished difference Result 461 states and 475 transitions. [2024-11-08 18:17:17,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-08 18:17:17,522 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 2.4936708860759493) internal successors, (197), 79 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 219 [2024-11-08 18:17:17,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:17:17,524 INFO L225 Difference]: With dead ends: 461 [2024-11-08 18:17:17,524 INFO L226 Difference]: Without dead ends: 236 [2024-11-08 18:17:17,525 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 376 SyntacticMatches, 16 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3413 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1210, Invalid=7720, Unknown=0, NotChecked=0, Total=8930 [2024-11-08 18:17:17,525 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 633 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 1237 mSolverCounterSat, 432 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 1669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 432 IncrementalHoareTripleChecker+Valid, 1237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-08 18:17:17,526 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 98 Invalid, 1669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [432 Valid, 1237 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-08 18:17:17,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2024-11-08 18:17:17,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 230. [2024-11-08 18:17:17,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 229 states have (on average 1.0305676855895196) internal successors, (236), 229 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:17:17,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 236 transitions. [2024-11-08 18:17:17,825 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 236 transitions. Word has length 219 [2024-11-08 18:17:17,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:17:17,826 INFO L471 AbstractCegarLoop]: Abstraction has 230 states and 236 transitions. [2024-11-08 18:17:17,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 2.4936708860759493) internal successors, (197), 79 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 18:17:17,826 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 236 transitions. [2024-11-08 18:17:17,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-11-08 18:17:17,827 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:17:17,827 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:17:17,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2024-11-08 18:17:18,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebc5aac1-0e48-4a77-90ba-ffc4980a6ddc/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:17:18,028 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 18:17:18,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:17:18,028 INFO L85 PathProgramCache]: Analyzing trace with hash -611110913, now seen corresponding path program 41 times [2024-11-08 18:17:18,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 18:17:18,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115669728] [2024-11-08 18:17:18,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:17:18,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 18:17:18,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat