./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca012cbd-cace-4d17-b42f-862e81b31fd2/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca012cbd-cace-4d17-b42f-862e81b31fd2/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca012cbd-cace-4d17-b42f-862e81b31fd2/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca012cbd-cace-4d17-b42f-862e81b31fd2/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca012cbd-cace-4d17-b42f-862e81b31fd2/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca012cbd-cace-4d17-b42f-862e81b31fd2/bin/uautomizer-verify-BQ2R08f2Ya --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 fdc85b042221b41aa26e62667e19ce1f6c246be9a2cb4f81fe8b15c8429db160 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 05:34:39,427 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 05:34:39,494 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca012cbd-cace-4d17-b42f-862e81b31fd2/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 05:34:39,499 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 05:34:39,499 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 05:34:39,524 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 05:34:39,524 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 05:34:39,525 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 05:34:39,525 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 05:34:39,526 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 05:34:39,527 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 05:34:39,527 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 05:34:39,528 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 05:34:39,528 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 05:34:39,529 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 05:34:39,529 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 05:34:39,530 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 05:34:39,530 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 05:34:39,531 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 05:34:39,531 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 05:34:39,532 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 05:34:39,532 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 05:34:39,533 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 05:34:39,533 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 05:34:39,534 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 05:34:39,534 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 05:34:39,534 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 05:34:39,535 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 05:34:39,535 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 05:34:39,536 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 05:34:39,536 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 05:34:39,536 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:34:39,537 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 05:34:39,537 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 05:34:39,537 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 05:34:39,538 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 05:34:39,538 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 05:34:39,538 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 05:34:39,538 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 05:34:39,538 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 05:34:39,539 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 05:34:39,539 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 05:34:39,539 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_ca012cbd-cace-4d17-b42f-862e81b31fd2/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca012cbd-cace-4d17-b42f-862e81b31fd2/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fdc85b042221b41aa26e62667e19ce1f6c246be9a2cb4f81fe8b15c8429db160 [2023-11-29 05:34:39,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 05:34:39,783 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 05:34:39,786 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 05:34:39,787 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 05:34:39,788 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 05:34:39,789 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca012cbd-cace-4d17-b42f-862e81b31fd2/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test1-1.i [2023-11-29 05:34:42,491 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 05:34:42,738 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 05:34:42,739 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca012cbd-cace-4d17-b42f-862e81b31fd2/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test1-1.i [2023-11-29 05:34:42,758 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca012cbd-cace-4d17-b42f-862e81b31fd2/bin/uautomizer-verify-BQ2R08f2Ya/data/802f27b9c/d5936c3ea1114067bdd2487acb5348af/FLAG63ba16071 [2023-11-29 05:34:42,772 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca012cbd-cace-4d17-b42f-862e81b31fd2/bin/uautomizer-verify-BQ2R08f2Ya/data/802f27b9c/d5936c3ea1114067bdd2487acb5348af [2023-11-29 05:34:42,774 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 05:34:42,776 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 05:34:42,777 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 05:34:42,778 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 05:34:42,783 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 05:34:42,783 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:34:42" (1/1) ... [2023-11-29 05:34:42,784 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7908a3ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:34:42, skipping insertion in model container [2023-11-29 05:34:42,785 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:34:42" (1/1) ... [2023-11-29 05:34:42,841 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:34:43,163 WARN L240 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_ca012cbd-cace-4d17-b42f-862e81b31fd2/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test1-1.i[33519,33532] [2023-11-29 05:34:43,231 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:34:43,240 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 05:34:43,270 WARN L240 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_ca012cbd-cace-4d17-b42f-862e81b31fd2/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test1-1.i[33519,33532] [2023-11-29 05:34:43,308 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:34:43,347 INFO L206 MainTranslator]: Completed translation [2023-11-29 05:34:43,347 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:34:43 WrapperNode [2023-11-29 05:34:43,347 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 05:34:43,348 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 05:34:43,348 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 05:34:43,349 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 05:34:43,354 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:34:43" (1/1) ... [2023-11-29 05:34:43,381 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:34:43" (1/1) ... [2023-11-29 05:34:43,434 INFO L138 Inliner]: procedures = 177, calls = 176, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 751 [2023-11-29 05:34:43,435 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 05:34:43,435 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 05:34:43,436 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 05:34:43,436 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 05:34:43,448 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:34:43" (1/1) ... [2023-11-29 05:34:43,448 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:34:43" (1/1) ... [2023-11-29 05:34:43,458 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:34:43" (1/1) ... [2023-11-29 05:34:43,508 INFO L175 MemorySlicer]: Split 163 memory accesses to 3 slices as follows [2, 156, 5]. 96 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 43 writes are split as follows [0, 42, 1]. [2023-11-29 05:34:43,509 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:34:43" (1/1) ... [2023-11-29 05:34:43,509 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:34:43" (1/1) ... [2023-11-29 05:34:43,543 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:34:43" (1/1) ... [2023-11-29 05:34:43,552 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:34:43" (1/1) ... [2023-11-29 05:34:43,557 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:34:43" (1/1) ... [2023-11-29 05:34:43,562 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:34:43" (1/1) ... [2023-11-29 05:34:43,571 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 05:34:43,572 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 05:34:43,572 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 05:34:43,573 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 05:34:43,574 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:34:43" (1/1) ... [2023-11-29 05:34:43,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:34:43,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca012cbd-cace-4d17-b42f-862e81b31fd2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:34:43,606 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca012cbd-cace-4d17-b42f-862e81b31fd2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 05:34:43,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca012cbd-cace-4d17-b42f-862e81b31fd2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 05:34:43,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 05:34:43,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 05:34:43,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 05:34:43,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 05:34:43,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 05:34:43,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 05:34:43,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2023-11-29 05:34:43,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2023-11-29 05:34:43,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2023-11-29 05:34:43,641 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2023-11-29 05:34:43,641 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2023-11-29 05:34:43,641 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2023-11-29 05:34:43,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 05:34:43,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 05:34:43,642 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 05:34:43,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 05:34:43,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 05:34:43,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-29 05:34:43,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 05:34:43,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 05:34:43,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-29 05:34:43,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 05:34:43,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 05:34:43,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 05:34:43,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 05:34:43,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 05:34:43,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 05:34:43,876 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 05:34:43,878 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 05:34:44,832 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 05:34:44,868 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 05:34:44,868 INFO L309 CfgBuilder]: Removed 31 assume(true) statements. [2023-11-29 05:34:44,869 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:34:44 BoogieIcfgContainer [2023-11-29 05:34:44,869 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 05:34:44,872 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 05:34:44,872 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 05:34:44,875 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 05:34:44,875 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:34:42" (1/3) ... [2023-11-29 05:34:44,876 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@df43683 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:34:44, skipping insertion in model container [2023-11-29 05:34:44,876 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:34:43" (2/3) ... [2023-11-29 05:34:44,876 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@df43683 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:34:44, skipping insertion in model container [2023-11-29 05:34:44,876 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:34:44" (3/3) ... [2023-11-29 05:34:44,878 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_nondet_test1-1.i [2023-11-29 05:34:44,896 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 05:34:44,897 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 05:34:44,951 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:34:44,958 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, 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;@44811818, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:34:44,958 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 05:34:44,963 INFO L276 IsEmpty]: Start isEmpty. Operand has 184 states, 178 states have (on average 1.696629213483146) internal successors, (302), 179 states have internal predecessors, (302), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 05:34:44,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 05:34:44,969 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:34:44,970 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:34:44,997 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:34:45,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:34:45,006 INFO L85 PathProgramCache]: Analyzing trace with hash 870225765, now seen corresponding path program 1 times [2023-11-29 05:34:45,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:34:45,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721145058] [2023-11-29 05:34:45,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:34:45,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:34:45,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:45,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:34:45,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:34:45,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721145058] [2023-11-29 05:34:45,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721145058] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:34:45,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:34:45,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:34:45,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053883706] [2023-11-29 05:34:45,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:34:45,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:34:45,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:34:45,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:34:45,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:34:45,229 INFO L87 Difference]: Start difference. First operand has 184 states, 178 states have (on average 1.696629213483146) internal successors, (302), 179 states have internal predecessors, (302), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:34:45,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:34:45,324 INFO L93 Difference]: Finished difference Result 539 states and 909 transitions. [2023-11-29 05:34:45,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:34:45,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-29 05:34:45,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:34:45,338 INFO L225 Difference]: With dead ends: 539 [2023-11-29 05:34:45,338 INFO L226 Difference]: Without dead ends: 354 [2023-11-29 05:34:45,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:34:45,345 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 252 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:34:45,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 529 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:34:45,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2023-11-29 05:34:45,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 183. [2023-11-29 05:34:45,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 178 states have (on average 1.4887640449438202) internal successors, (265), 178 states have internal predecessors, (265), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 05:34:45,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 271 transitions. [2023-11-29 05:34:45,398 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 271 transitions. Word has length 7 [2023-11-29 05:34:45,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:34:45,399 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 271 transitions. [2023-11-29 05:34:45,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:34:45,399 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 271 transitions. [2023-11-29 05:34:45,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-29 05:34:45,404 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:34:45,405 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:34:45,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 05:34:45,405 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:34:45,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:34:45,406 INFO L85 PathProgramCache]: Analyzing trace with hash 85236980, now seen corresponding path program 1 times [2023-11-29 05:34:45,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:34:45,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245171352] [2023-11-29 05:34:45,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:34:45,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:34:45,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:45,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:34:45,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:34:45,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245171352] [2023-11-29 05:34:45,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245171352] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:34:45,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:34:45,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:34:45,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696926305] [2023-11-29 05:34:45,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:34:45,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:34:45,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:34:45,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:34:45,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:34:45,736 INFO L87 Difference]: Start difference. First operand 183 states and 271 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:34:45,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:34:45,841 INFO L93 Difference]: Finished difference Result 368 states and 544 transitions. [2023-11-29 05:34:45,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:34:45,842 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2023-11-29 05:34:45,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:34:45,844 INFO L225 Difference]: With dead ends: 368 [2023-11-29 05:34:45,844 INFO L226 Difference]: Without dead ends: 187 [2023-11-29 05:34:45,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:34:45,847 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 165 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:34:45,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 568 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:34:45,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2023-11-29 05:34:45,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 183. [2023-11-29 05:34:45,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 178 states have (on average 1.449438202247191) internal successors, (258), 178 states have internal predecessors, (258), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 05:34:45,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 264 transitions. [2023-11-29 05:34:45,875 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 264 transitions. Word has length 82 [2023-11-29 05:34:45,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:34:45,876 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 264 transitions. [2023-11-29 05:34:45,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:34:45,876 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 264 transitions. [2023-11-29 05:34:45,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-29 05:34:45,880 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:34:45,880 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:34:45,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 05:34:45,881 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:34:45,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:34:45,881 INFO L85 PathProgramCache]: Analyzing trace with hash 867183104, now seen corresponding path program 1 times [2023-11-29 05:34:45,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:34:45,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124178566] [2023-11-29 05:34:45,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:34:45,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:34:45,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:46,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 05:34:46,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:34:46,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124178566] [2023-11-29 05:34:46,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124178566] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:34:46,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:34:46,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 05:34:46,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245911790] [2023-11-29 05:34:46,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:34:46,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:34:46,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:34:46,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:34:46,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:34:46,057 INFO L87 Difference]: Start difference. First operand 183 states and 264 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:34:46,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:34:46,112 INFO L93 Difference]: Finished difference Result 475 states and 697 transitions. [2023-11-29 05:34:46,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:34:46,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2023-11-29 05:34:46,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:34:46,116 INFO L225 Difference]: With dead ends: 475 [2023-11-29 05:34:46,117 INFO L226 Difference]: Without dead ends: 294 [2023-11-29 05:34:46,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:34:46,119 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 123 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:34:46,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 503 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 05:34:46,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2023-11-29 05:34:46,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2023-11-29 05:34:46,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 289 states have (on average 1.480968858131488) internal successors, (428), 289 states have internal predecessors, (428), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 05:34:46,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 434 transitions. [2023-11-29 05:34:46,141 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 434 transitions. Word has length 82 [2023-11-29 05:34:46,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:34:46,141 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 434 transitions. [2023-11-29 05:34:46,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 05:34:46,142 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 434 transitions. [2023-11-29 05:34:46,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-29 05:34:46,146 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:34:46,147 INFO L195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:34:46,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 05:34:46,147 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:34:46,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:34:46,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1995796811, now seen corresponding path program 1 times [2023-11-29 05:34:46,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:34:46,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483107522] [2023-11-29 05:34:46,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:34:46,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:34:46,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:46,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-29 05:34:46,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:46,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-29 05:34:46,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:46,390 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 05:34:46,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:34:46,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483107522] [2023-11-29 05:34:46,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483107522] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:34:46,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189802721] [2023-11-29 05:34:46,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:34:46,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:34:46,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca012cbd-cace-4d17-b42f-862e81b31fd2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:34:46,396 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca012cbd-cace-4d17-b42f-862e81b31fd2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:34:46,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca012cbd-cace-4d17-b42f-862e81b31fd2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 05:34:46,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:46,692 INFO L262 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 05:34:46,700 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:34:46,864 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 05:34:46,864 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:34:47,004 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 05:34:47,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189802721] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:34:47,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:34:47,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2023-11-29 05:34:47,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853929862] [2023-11-29 05:34:47,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:34:47,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:34:47,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:34:47,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:34:47,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:34:47,009 INFO L87 Difference]: Start difference. First operand 294 states and 434 transitions. Second operand has 8 states, 8 states have (on average 31.625) internal successors, (253), 7 states have internal predecessors, (253), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-29 05:34:47,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:34:47,476 INFO L93 Difference]: Finished difference Result 705 states and 1040 transitions. [2023-11-29 05:34:47,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:34:47,477 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 31.625) internal successors, (253), 7 states have internal predecessors, (253), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 95 [2023-11-29 05:34:47,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:34:47,484 INFO L225 Difference]: With dead ends: 705 [2023-11-29 05:34:47,484 INFO L226 Difference]: Without dead ends: 699 [2023-11-29 05:34:47,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:34:47,486 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 1528 mSDsluCounter, 1038 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1544 SdHoareTripleChecker+Valid, 1374 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 05:34:47,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1544 Valid, 1374 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 05:34:47,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2023-11-29 05:34:47,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 697. [2023-11-29 05:34:47,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 683 states have (on average 1.4538799414348462) internal successors, (993), 683 states have internal predecessors, (993), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-29 05:34:47,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1017 transitions. [2023-11-29 05:34:47,523 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1017 transitions. Word has length 95 [2023-11-29 05:34:47,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:34:47,524 INFO L495 AbstractCegarLoop]: Abstraction has 697 states and 1017 transitions. [2023-11-29 05:34:47,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 31.625) internal successors, (253), 7 states have internal predecessors, (253), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-29 05:34:47,524 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1017 transitions. [2023-11-29 05:34:47,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2023-11-29 05:34:47,531 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:34:47,532 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:34:47,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca012cbd-cace-4d17-b42f-862e81b31fd2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 05:34:47,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca012cbd-cace-4d17-b42f-862e81b31fd2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:34:47,733 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:34:47,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:34:47,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1269125232, now seen corresponding path program 1 times [2023-11-29 05:34:47,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:34:47,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981749975] [2023-11-29 05:34:47,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:34:47,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:34:47,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:48,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-29 05:34:48,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:48,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-29 05:34:48,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:48,694 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 4 proven. 327 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-11-29 05:34:48,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:34:48,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981749975] [2023-11-29 05:34:48,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981749975] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:34:48,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292450759] [2023-11-29 05:34:48,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:34:48,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:34:48,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca012cbd-cace-4d17-b42f-862e81b31fd2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:34:48,697 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca012cbd-cace-4d17-b42f-862e81b31fd2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:34:48,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca012cbd-cace-4d17-b42f-862e81b31fd2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 05:34:49,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:49,338 INFO L262 TraceCheckSpWp]: Trace formula consists of 1632 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 05:34:49,351 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:34:49,811 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 0 proven. 448 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 05:34:49,812 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:34:50,296 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 0 proven. 448 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 05:34:50,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292450759] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:34:50,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:34:50,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-11-29 05:34:50,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048745707] [2023-11-29 05:34:50,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:34:50,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 05:34:50,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:34:50,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 05:34:50,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2023-11-29 05:34:50,304 INFO L87 Difference]: Start difference. First operand 697 states and 1017 transitions. Second operand has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 16 states have internal predecessors, (836), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-29 05:34:52,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:34:52,211 INFO L93 Difference]: Finished difference Result 2063 states and 3045 transitions. [2023-11-29 05:34:52,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 05:34:52,213 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 16 states have internal predecessors, (836), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 320 [2023-11-29 05:34:52,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:34:52,225 INFO L225 Difference]: With dead ends: 2063 [2023-11-29 05:34:52,225 INFO L226 Difference]: Without dead ends: 1651 [2023-11-29 05:34:52,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 663 GetRequests, 633 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=315, Invalid=677, Unknown=0, NotChecked=0, Total=992 [2023-11-29 05:34:52,227 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 9501 mSDsluCounter, 2616 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9501 SdHoareTripleChecker+Valid, 3089 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 05:34:52,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9501 Valid, 3089 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 05:34:52,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1651 states. [2023-11-29 05:34:52,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1651 to 1649. [2023-11-29 05:34:52,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1649 states, 1635 states have (on average 1.4666666666666666) internal successors, (2398), 1635 states have internal predecessors, (2398), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-29 05:34:52,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1649 states to 1649 states and 2422 transitions. [2023-11-29 05:34:52,301 INFO L78 Accepts]: Start accepts. Automaton has 1649 states and 2422 transitions. Word has length 320 [2023-11-29 05:34:52,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:34:52,302 INFO L495 AbstractCegarLoop]: Abstraction has 1649 states and 2422 transitions. [2023-11-29 05:34:52,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 49.1764705882353) internal successors, (836), 16 states have internal predecessors, (836), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-29 05:34:52,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1649 states and 2422 transitions. [2023-11-29 05:34:52,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 772 [2023-11-29 05:34:52,327 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:34:52,327 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:34:52,336 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca012cbd-cace-4d17-b42f-862e81b31fd2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 05:34:52,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca012cbd-cace-4d17-b42f-862e81b31fd2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:34:52,528 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:34:52,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:34:52,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1024222994, now seen corresponding path program 1 times [2023-11-29 05:34:52,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:34:52,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908520788] [2023-11-29 05:34:52,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:34:52,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:42:46,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:48,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-29 05:42:48,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:48,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-29 05:42:48,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:48,742 INFO L134 CoverageAnalysis]: Checked inductivity of 3371 backedges. 496 proven. 2 refuted. 0 times theorem prover too weak. 2873 trivial. 0 not checked. [2023-11-29 05:42:48,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:42:48,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908520788] [2023-11-29 05:42:48,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908520788] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:42:48,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824814417] [2023-11-29 05:42:48,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:42:48,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:42:48,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca012cbd-cace-4d17-b42f-862e81b31fd2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:42:48,746 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca012cbd-cace-4d17-b42f-862e81b31fd2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:42:48,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca012cbd-cace-4d17-b42f-862e81b31fd2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 05:43:09,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:43:09,492 INFO L262 TraceCheckSpWp]: Trace formula consists of 3805 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-29 05:43:09,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:43:09,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-11-29 05:43:10,123 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 05:43:10,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 24 [2023-11-29 05:43:10,318 INFO L134 CoverageAnalysis]: Checked inductivity of 3371 backedges. 883 proven. 32 refuted. 0 times theorem prover too weak. 2456 trivial. 0 not checked. [2023-11-29 05:43:10,318 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:43:11,018 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 05:43:11,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 24 [2023-11-29 05:43:13,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824814417] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:43:13,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:43:13,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 14] total 17 [2023-11-29 05:43:13,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760602741] [2023-11-29 05:43:13,200 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:43:13,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 05:43:13,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:43:13,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 05:43:13,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=608, Unknown=0, NotChecked=0, Total=702 [2023-11-29 05:43:13,203 INFO L87 Difference]: Start difference. First operand 1649 states and 2422 transitions. Second operand has 17 states, 16 states have (on average 16.4375) internal successors, (263), 16 states have internal predecessors, (263), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 05:43:15,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 05:43:17,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 05:43:20,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:43:20,440 INFO L93 Difference]: Finished difference Result 3233 states and 4745 transitions. [2023-11-29 05:43:20,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 05:43:20,441 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 16.4375) internal successors, (263), 16 states have internal predecessors, (263), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 771 [2023-11-29 05:43:20,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:43:20,452 INFO L225 Difference]: With dead ends: 3233 [2023-11-29 05:43:20,452 INFO L226 Difference]: Without dead ends: 1700 [2023-11-29 05:43:20,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1497 GetRequests, 1462 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=214, Invalid=1118, Unknown=0, NotChecked=0, Total=1332 [2023-11-29 05:43:20,456 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 923 mSDsluCounter, 3881 mSDsCounter, 0 mSdLazyCounter, 3139 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 929 SdHoareTripleChecker+Valid, 4364 SdHoareTripleChecker+Invalid, 3152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 3139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-11-29 05:43:20,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [929 Valid, 4364 Invalid, 3152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 3139 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2023-11-29 05:43:20,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1700 states. [2023-11-29 05:43:20,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1700 to 1681. [2023-11-29 05:43:20,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1681 states, 1666 states have (on average 1.4627851140456183) internal successors, (2437), 1667 states have internal predecessors, (2437), 12 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (22), 12 states have call predecessors, (22), 12 states have call successors, (22) [2023-11-29 05:43:20,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1681 states to 1681 states and 2471 transitions. [2023-11-29 05:43:20,530 INFO L78 Accepts]: Start accepts. Automaton has 1681 states and 2471 transitions. Word has length 771 [2023-11-29 05:43:20,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:43:20,530 INFO L495 AbstractCegarLoop]: Abstraction has 1681 states and 2471 transitions. [2023-11-29 05:43:20,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 16.4375) internal successors, (263), 16 states have internal predecessors, (263), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 05:43:20,531 INFO L276 IsEmpty]: Start isEmpty. Operand 1681 states and 2471 transitions. [2023-11-29 05:43:20,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 774 [2023-11-29 05:43:20,554 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:43:20,555 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:43:20,587 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca012cbd-cace-4d17-b42f-862e81b31fd2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 05:43:20,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca012cbd-cace-4d17-b42f-862e81b31fd2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:43:20,756 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:43:20,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:43:20,756 INFO L85 PathProgramCache]: Analyzing trace with hash -37882624, now seen corresponding path program 1 times [2023-11-29 05:43:20,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:43:20,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947649706] [2023-11-29 05:43:20,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:43:20,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:43:21,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:43:21,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-29 05:43:21,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:43:21,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 05:43:21,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:43:21,745 INFO L134 CoverageAnalysis]: Checked inductivity of 3376 backedges. 864 proven. 0 refuted. 0 times theorem prover too weak. 2512 trivial. 0 not checked. [2023-11-29 05:43:21,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:43:21,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947649706] [2023-11-29 05:43:21,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947649706] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:43:21,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:43:21,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:43:21,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499359242] [2023-11-29 05:43:21,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:43:21,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:43:21,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:43:21,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:43:21,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:43:21,748 INFO L87 Difference]: Start difference. First operand 1681 states and 2471 transitions. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 3 states have internal predecessors, (169), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 05:43:22,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:43:22,056 INFO L93 Difference]: Finished difference Result 3369 states and 4950 transitions. [2023-11-29 05:43:22,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:43:22,057 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 3 states have internal predecessors, (169), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 773 [2023-11-29 05:43:22,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:43:22,066 INFO L225 Difference]: With dead ends: 3369 [2023-11-29 05:43:22,067 INFO L226 Difference]: Without dead ends: 1753 [2023-11-29 05:43:22,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:43:22,070 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 4 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 05:43:22,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 697 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 05:43:22,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1753 states. [2023-11-29 05:43:22,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1753 to 1743. [2023-11-29 05:43:22,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1743 states, 1728 states have (on average 1.4450231481481481) internal successors, (2497), 1729 states have internal predecessors, (2497), 12 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (22), 12 states have call predecessors, (22), 12 states have call successors, (22) [2023-11-29 05:43:22,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1743 states to 1743 states and 2531 transitions. [2023-11-29 05:43:22,119 INFO L78 Accepts]: Start accepts. Automaton has 1743 states and 2531 transitions. Word has length 773 [2023-11-29 05:43:22,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:43:22,119 INFO L495 AbstractCegarLoop]: Abstraction has 1743 states and 2531 transitions. [2023-11-29 05:43:22,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 3 states have internal predecessors, (169), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 05:43:22,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1743 states and 2531 transitions. [2023-11-29 05:43:22,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 774 [2023-11-29 05:43:22,127 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:43:22,128 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:43:22,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 05:43:22,128 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:43:22,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:43:22,129 INFO L85 PathProgramCache]: Analyzing trace with hash 567152256, now seen corresponding path program 1 times [2023-11-29 05:43:22,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:43:22,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963153413] [2023-11-29 05:43:22,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:43:22,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:43:22,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:43:22,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-29 05:43:22,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:43:22,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 05:43:22,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:43:22,972 INFO L134 CoverageAnalysis]: Checked inductivity of 3376 backedges. 837 proven. 0 refuted. 0 times theorem prover too weak. 2539 trivial. 0 not checked. [2023-11-29 05:43:22,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:43:22,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963153413] [2023-11-29 05:43:22,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963153413] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:43:22,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:43:22,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:43:22,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696431425] [2023-11-29 05:43:22,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:43:22,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:43:22,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:43:22,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:43:22,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:43:22,975 INFO L87 Difference]: Start difference. First operand 1743 states and 2531 transitions. Second operand has 5 states, 5 states have (on average 36.8) internal successors, (184), 4 states have internal predecessors, (184), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 05:43:23,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:43:23,221 INFO L93 Difference]: Finished difference Result 2997 states and 4267 transitions. [2023-11-29 05:43:23,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:43:23,221 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.8) internal successors, (184), 4 states have internal predecessors, (184), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 773 [2023-11-29 05:43:23,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:43:23,227 INFO L225 Difference]: With dead ends: 2997 [2023-11-29 05:43:23,227 INFO L226 Difference]: Without dead ends: 1261 [2023-11-29 05:43:23,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:43:23,229 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 80 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:43:23,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 566 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 05:43:23,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1261 states. [2023-11-29 05:43:23,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1261 to 1261. [2023-11-29 05:43:23,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1261 states, 1246 states have (on average 1.35553772070626) internal successors, (1689), 1247 states have internal predecessors, (1689), 12 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (22), 12 states have call predecessors, (22), 12 states have call successors, (22) [2023-11-29 05:43:23,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1261 states to 1261 states and 1723 transitions. [2023-11-29 05:43:23,282 INFO L78 Accepts]: Start accepts. Automaton has 1261 states and 1723 transitions. Word has length 773 [2023-11-29 05:43:23,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:43:23,283 INFO L495 AbstractCegarLoop]: Abstraction has 1261 states and 1723 transitions. [2023-11-29 05:43:23,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.8) internal successors, (184), 4 states have internal predecessors, (184), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 05:43:23,283 INFO L276 IsEmpty]: Start isEmpty. Operand 1261 states and 1723 transitions. [2023-11-29 05:43:23,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2023-11-29 05:43:23,292 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:43:23,292 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:43:23,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 05:43:23,293 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:43:23,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:43:23,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1184205292, now seen corresponding path program 1 times [2023-11-29 05:43:23,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:43:23,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974298908] [2023-11-29 05:43:23,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:43:23,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:45:04,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:45:05,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-29 05:45:05,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:45:05,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 05:45:05,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:45:05,932 INFO L134 CoverageAnalysis]: Checked inductivity of 3376 backedges. 496 proven. 6 refuted. 0 times theorem prover too weak. 2874 trivial. 0 not checked. [2023-11-29 05:45:05,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:45:05,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974298908] [2023-11-29 05:45:05,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974298908] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:45:05,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219365269] [2023-11-29 05:45:05,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:45:05,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:45:05,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca012cbd-cace-4d17-b42f-862e81b31fd2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:45:05,934 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca012cbd-cace-4d17-b42f-862e81b31fd2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:45:05,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca012cbd-cace-4d17-b42f-862e81b31fd2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 05:46:01,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:01,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 3836 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-29 05:46:01,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:46:01,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-11-29 05:46:01,707 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 05:46:01,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 24 [2023-11-29 05:46:01,881 INFO L134 CoverageAnalysis]: Checked inductivity of 3376 backedges. 1347 proven. 137 refuted. 0 times theorem prover too weak. 1892 trivial. 0 not checked. [2023-11-29 05:46:01,881 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:46:02,517 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 05:46:02,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 24 [2023-11-29 05:46:08,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219365269] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:46:08,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:46:08,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 15] total 19 [2023-11-29 05:46:08,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394158466] [2023-11-29 05:46:08,827 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:46:08,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 05:46:08,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:46:08,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 05:46:08,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=763, Unknown=0, NotChecked=0, Total=870 [2023-11-29 05:46:08,830 INFO L87 Difference]: Start difference. First operand 1261 states and 1723 transitions. Second operand has 19 states, 18 states have (on average 19.055555555555557) internal successors, (343), 18 states have internal predecessors, (343), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 05:46:13,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:46:13,652 INFO L93 Difference]: Finished difference Result 2447 states and 3355 transitions. [2023-11-29 05:46:13,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 05:46:13,653 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 19.055555555555557) internal successors, (343), 18 states have internal predecessors, (343), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 774 [2023-11-29 05:46:13,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:46:13,659 INFO L225 Difference]: With dead ends: 2447 [2023-11-29 05:46:13,660 INFO L226 Difference]: Without dead ends: 1263 [2023-11-29 05:46:13,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1498 GetRequests, 1460 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=233, Invalid=1327, Unknown=0, NotChecked=0, Total=1560 [2023-11-29 05:46:13,663 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 520 mSDsluCounter, 5580 mSDsCounter, 0 mSdLazyCounter, 3214 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 6072 SdHoareTripleChecker+Invalid, 3222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 3214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-29 05:46:13,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [531 Valid, 6072 Invalid, 3222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 3214 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-11-29 05:46:13,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1263 states. [2023-11-29 05:46:13,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1263 to 1262. [2023-11-29 05:46:13,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1262 states, 1247 states have (on average 1.355252606255012) internal successors, (1690), 1248 states have internal predecessors, (1690), 12 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (22), 12 states have call predecessors, (22), 12 states have call successors, (22) [2023-11-29 05:46:13,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 1724 transitions. [2023-11-29 05:46:13,717 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 1724 transitions. Word has length 774 [2023-11-29 05:46:13,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:46:13,717 INFO L495 AbstractCegarLoop]: Abstraction has 1262 states and 1724 transitions. [2023-11-29 05:46:13,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 19.055555555555557) internal successors, (343), 18 states have internal predecessors, (343), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 05:46:13,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 1724 transitions. [2023-11-29 05:46:13,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 778 [2023-11-29 05:46:13,727 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:46:13,728 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 8, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:46:13,775 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca012cbd-cace-4d17-b42f-862e81b31fd2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 05:46:13,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca012cbd-cace-4d17-b42f-862e81b31fd2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-29 05:46:13,928 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:46:13,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:46:13,929 INFO L85 PathProgramCache]: Analyzing trace with hash 941743828, now seen corresponding path program 2 times [2023-11-29 05:46:13,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:46:13,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452907764] [2023-11-29 05:46:13,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:46:13,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms