./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-kernel--locking--locktorture.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 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_f7fe4d04-32e6-4864-8f89-d82f2a697705/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fe4d04-32e6-4864-8f89-d82f2a697705/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fe4d04-32e6-4864-8f89-d82f2a697705/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fe4d04-32e6-4864-8f89-d82f2a697705/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-kernel--locking--locktorture.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fe4d04-32e6-4864-8f89-d82f2a697705/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fe4d04-32e6-4864-8f89-d82f2a697705/bin/uautomizer-verify-bycVGegfSx --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 64bit --witnessprinter.graph.data.programhash c0e62a2f55ddaeb08563a2d9bb0bfed8d8d740037b0faa92e9ebf8fe89adc120 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:22:26,991 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:22:27,068 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fe4d04-32e6-4864-8f89-d82f2a697705/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-21 22:22:27,073 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:22:27,073 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:22:27,100 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:22:27,101 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:22:27,102 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:22:27,103 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:22:27,103 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:22:27,104 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:22:27,105 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:22:27,106 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:22:27,106 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:22:27,107 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:22:27,107 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:22:27,108 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:22:27,108 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:22:27,109 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:22:27,109 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:22:27,110 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:22:27,111 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:22:27,111 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:22:27,112 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:22:27,112 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:22:27,113 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:22:27,113 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:22:27,113 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:22:27,114 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:22:27,114 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:22:27,115 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:22:27,115 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:22:27,116 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:22:27,116 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:22:27,116 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:22:27,116 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:22:27,117 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:22:27,117 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:22:27,117 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:22:27,117 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_f7fe4d04-32e6-4864-8f89-d82f2a697705/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fe4d04-32e6-4864-8f89-d82f2a697705/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c0e62a2f55ddaeb08563a2d9bb0bfed8d8d740037b0faa92e9ebf8fe89adc120 [2023-11-21 22:22:27,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:22:27,504 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:22:27,507 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:22:27,509 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:22:27,510 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:22:27,512 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fe4d04-32e6-4864-8f89-d82f2a697705/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-kernel--locking--locktorture.ko-entry_point.cil.out.i [2023-11-21 22:22:30,861 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:22:31,339 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:22:31,340 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fe4d04-32e6-4864-8f89-d82f2a697705/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-kernel--locking--locktorture.ko-entry_point.cil.out.i [2023-11-21 22:22:31,380 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fe4d04-32e6-4864-8f89-d82f2a697705/bin/uautomizer-verify-bycVGegfSx/data/ccd8f4019/93f303ae8a4043cfa605327d101ca8a9/FLAGe989b485e [2023-11-21 22:22:31,399 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fe4d04-32e6-4864-8f89-d82f2a697705/bin/uautomizer-verify-bycVGegfSx/data/ccd8f4019/93f303ae8a4043cfa605327d101ca8a9 [2023-11-21 22:22:31,410 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:22:31,412 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:22:31,414 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:22:31,414 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:22:31,420 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:22:31,421 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:22:31" (1/1) ... [2023-11-21 22:22:31,422 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@252a91fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:31, skipping insertion in model container [2023-11-21 22:22:31,423 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:22:31" (1/1) ... [2023-11-21 22:22:31,515 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:22:31,883 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [1764] [2023-11-21 22:22:31,884 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [1765-1766] [2023-11-21 22:22:32,092 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_f7fe4d04-32e6-4864-8f89-d82f2a697705/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-kernel--locking--locktorture.ko-entry_point.cil.out.i[52456,52469] [2023-11-21 22:22:32,357 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:22:32,380 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:22:32,487 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [1764] [2023-11-21 22:22:32,487 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [1765-1766] [2023-11-21 22:22:32,491 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [1855] [2023-11-21 22:22:32,494 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [1858] [2023-11-21 22:22:32,494 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [1861] [2023-11-21 22:22:32,495 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [1864] [2023-11-21 22:22:32,498 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; incl %0": "+m" (v->counter)); [1902] [2023-11-21 22:22:32,506 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_f7fe4d04-32e6-4864-8f89-d82f2a697705/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-kernel--locking--locktorture.ko-entry_point.cil.out.i[52456,52469] [2023-11-21 22:22:32,583 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:22:32,619 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:22:32,619 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:22:32,628 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:22:32,629 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:32 WrapperNode [2023-11-21 22:22:32,629 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:22:32,630 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:22:32,631 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:22:32,631 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:22:32,640 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:32" (1/1) ... [2023-11-21 22:22:32,691 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:32" (1/1) ... [2023-11-21 22:22:32,804 INFO L138 Inliner]: procedures = 114, calls = 301, calls flagged for inlining = 49, calls inlined = 38, statements flattened = 909 [2023-11-21 22:22:32,804 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:22:32,805 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:22:32,805 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:22:32,806 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:22:32,818 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:32" (1/1) ... [2023-11-21 22:22:32,819 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:32" (1/1) ... [2023-11-21 22:22:32,845 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:32" (1/1) ... [2023-11-21 22:22:32,900 INFO L187 HeapSplitter]: Split 82 memory accesses to 14 slices as follows [2, 5, 10, 6, 4, 1, 1, 24, 4, 1, 0, 12, 10, 2] [2023-11-21 22:22:32,901 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:32" (1/1) ... [2023-11-21 22:22:32,901 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:32" (1/1) ... [2023-11-21 22:22:32,939 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:32" (1/1) ... [2023-11-21 22:22:32,948 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:32" (1/1) ... [2023-11-21 22:22:32,959 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:32" (1/1) ... [2023-11-21 22:22:32,966 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:32" (1/1) ... [2023-11-21 22:22:32,981 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:22:32,982 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:22:32,982 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:22:32,982 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:22:32,983 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:32" (1/1) ... [2023-11-21 22:22:32,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:22:33,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fe4d04-32e6-4864-8f89-d82f2a697705/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:22:33,018 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fe4d04-32e6-4864-8f89-d82f2a697705/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:22:33,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fe4d04-32e6-4864-8f89-d82f2a697705/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:22:33,094 INFO L130 BoogieDeclarations]: Found specification of procedure _torture_stop_kthread [2023-11-21 22:22:33,095 INFO L138 BoogieDeclarations]: Found implementation of procedure _torture_stop_kthread [2023-11-21 22:22:33,095 INFO L130 BoogieDeclarations]: Found specification of procedure torture_lock_busted_write_lock [2023-11-21 22:22:33,095 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_lock_busted_write_lock [2023-11-21 22:22:33,095 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-21 22:22:33,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-21 22:22:33,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-21 22:22:33,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-21 22:22:33,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-21 22:22:33,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-21 22:22:33,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-21 22:22:33,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-21 22:22:33,098 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-21 22:22:33,098 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-21 22:22:33,099 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2023-11-21 22:22:33,099 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2023-11-21 22:22:33,099 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2023-11-21 22:22:33,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2023-11-21 22:22:33,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2023-11-21 22:22:33,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2023-11-21 22:22:33,101 INFO L130 BoogieDeclarations]: Found specification of procedure torture_spin_lock_write_delay [2023-11-21 22:22:33,103 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_spin_lock_write_delay [2023-11-21 22:22:33,103 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2023-11-21 22:22:33,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2023-11-21 22:22:33,104 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-21 22:22:33,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-21 22:22:33,105 INFO L130 BoogieDeclarations]: Found specification of procedure _torture_create_kthread [2023-11-21 22:22:33,105 INFO L138 BoogieDeclarations]: Found implementation of procedure _torture_create_kthread [2023-11-21 22:22:33,105 INFO L130 BoogieDeclarations]: Found specification of procedure torture_spin_lock_write_lock [2023-11-21 22:22:33,105 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_spin_lock_write_lock [2023-11-21 22:22:33,105 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2023-11-21 22:22:33,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2023-11-21 22:22:33,106 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-21 22:22:33,106 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-21 22:22:33,106 INFO L130 BoogieDeclarations]: Found specification of procedure torture_lock_spin_write_unlock_irq [2023-11-21 22:22:33,106 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_lock_spin_write_unlock_irq [2023-11-21 22:22:33,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-21 22:22:33,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-21 22:22:33,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-21 22:22:33,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-21 22:22:33,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-21 22:22:33,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-21 22:22:33,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-21 22:22:33,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-21 22:22:33,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2023-11-21 22:22:33,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2023-11-21 22:22:33,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2023-11-21 22:22:33,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2023-11-21 22:22:33,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2023-11-21 22:22:33,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2023-11-21 22:22:33,109 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-21 22:22:33,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-21 22:22:33,109 INFO L130 BoogieDeclarations]: Found specification of procedure torture_random [2023-11-21 22:22:33,110 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_random [2023-11-21 22:22:33,110 INFO L130 BoogieDeclarations]: Found specification of procedure lock_torture_cleanup [2023-11-21 22:22:33,111 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_torture_cleanup [2023-11-21 22:22:33,111 INFO L130 BoogieDeclarations]: Found specification of procedure torture_init_end [2023-11-21 22:22:33,112 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_init_end [2023-11-21 22:22:33,112 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-21 22:22:33,112 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-21 22:22:33,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 22:22:33,112 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~TO~VOID [2023-11-21 22:22:33,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~TO~VOID [2023-11-21 22:22:33,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:22:33,113 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2023-11-21 22:22:33,113 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2023-11-21 22:22:33,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-21 22:22:33,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-21 22:22:33,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-21 22:22:33,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-21 22:22:33,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-21 22:22:33,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-21 22:22:33,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-21 22:22:33,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2023-11-21 22:22:33,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2023-11-21 22:22:33,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2023-11-21 22:22:33,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#10 [2023-11-21 22:22:33,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#11 [2023-11-21 22:22:33,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#12 [2023-11-21 22:22:33,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#13 [2023-11-21 22:22:33,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:22:33,116 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-21 22:22:33,116 INFO L130 BoogieDeclarations]: Found specification of procedure lock_torture_stats_print [2023-11-21 22:22:33,117 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_torture_stats_print [2023-11-21 22:22:33,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-21 22:22:33,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-21 22:22:33,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-21 22:22:33,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-21 22:22:33,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-21 22:22:33,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-21 22:22:33,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-21 22:22:33,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2023-11-21 22:22:33,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2023-11-21 22:22:33,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2023-11-21 22:22:33,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2023-11-21 22:22:33,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#11 [2023-11-21 22:22:33,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#12 [2023-11-21 22:22:33,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#13 [2023-11-21 22:22:33,119 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2023-11-21 22:22:33,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2023-11-21 22:22:33,120 INFO L130 BoogieDeclarations]: Found specification of procedure torture_spin_lock_write_lock_irq [2023-11-21 22:22:33,120 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_spin_lock_write_lock_irq [2023-11-21 22:22:33,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:22:33,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-21 22:22:33,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-21 22:22:33,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-21 22:22:33,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-21 22:22:33,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-21 22:22:33,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-21 22:22:33,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-21 22:22:33,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2023-11-21 22:22:33,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2023-11-21 22:22:33,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#9 [2023-11-21 22:22:33,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#10 [2023-11-21 22:22:33,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#11 [2023-11-21 22:22:33,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#12 [2023-11-21 22:22:33,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#13 [2023-11-21 22:22:33,125 INFO L130 BoogieDeclarations]: Found specification of procedure torture_lock_busted_write_delay [2023-11-21 22:22:33,125 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_lock_busted_write_delay [2023-11-21 22:22:33,125 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-21 22:22:33,126 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-21 22:22:33,126 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-21 22:22:33,126 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-21 22:22:33,126 INFO L130 BoogieDeclarations]: Found specification of procedure torture_lock_busted_write_unlock [2023-11-21 22:22:33,126 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_lock_busted_write_unlock [2023-11-21 22:22:33,126 INFO L130 BoogieDeclarations]: Found specification of procedure lock_torture_print_module_parms [2023-11-21 22:22:33,127 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_torture_print_module_parms [2023-11-21 22:22:33,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 22:22:33,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-21 22:22:33,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-21 22:22:33,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-21 22:22:33,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-21 22:22:33,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-21 22:22:33,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-21 22:22:33,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-21 22:22:33,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-21 22:22:33,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-21 22:22:33,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-11-21 22:22:33,129 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-11-21 22:22:33,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-11-21 22:22:33,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-11-21 22:22:33,133 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-21 22:22:33,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-21 22:22:33,135 INFO L130 BoogieDeclarations]: Found specification of procedure torture_spin_lock_write_unlock [2023-11-21 22:22:33,136 INFO L138 BoogieDeclarations]: Found implementation of procedure torture_spin_lock_write_unlock [2023-11-21 22:22:33,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:22:33,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:22:33,493 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:22:33,496 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:22:33,549 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-21 22:22:34,561 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:22:34,870 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:22:34,870 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 22:22:34,872 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:22:34 BoogieIcfgContainer [2023-11-21 22:22:34,873 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:22:34,875 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:22:34,875 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:22:34,878 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:22:34,879 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:22:31" (1/3) ... [2023-11-21 22:22:34,880 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ac4039 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:22:34, skipping insertion in model container [2023-11-21 22:22:34,880 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:32" (2/3) ... [2023-11-21 22:22:34,881 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ac4039 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:22:34, skipping insertion in model container [2023-11-21 22:22:34,882 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:22:34" (3/3) ... [2023-11-21 22:22:34,883 INFO L112 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-kernel--locking--locktorture.ko-entry_point.cil.out.i [2023-11-21 22:22:34,903 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:22:34,903 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 22:22:34,981 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:22:34,990 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;@503cbdc8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:22:34,990 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 22:22:34,997 INFO L276 IsEmpty]: Start isEmpty. Operand has 288 states, 189 states have (on average 1.470899470899471) internal successors, (278), 205 states have internal predecessors, (278), 70 states have call successors, (70), 28 states have call predecessors, (70), 27 states have return successors, (65), 60 states have call predecessors, (65), 65 states have call successors, (65) [2023-11-21 22:22:35,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-21 22:22:35,027 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:22:35,028 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:22:35,028 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:22:35,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:35,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1633157740, now seen corresponding path program 1 times [2023-11-21 22:22:35,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:22:35,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605097391] [2023-11-21 22:22:35,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:35,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:22:35,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:35,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:22:35,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:35,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-21 22:22:35,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:35,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 22:22:35,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:35,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-21 22:22:35,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:35,714 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:22:35,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:22:35,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605097391] [2023-11-21 22:22:35,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605097391] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:22:35,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:22:35,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:22:35,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706088670] [2023-11-21 22:22:35,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:22:35,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:22:35,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:22:35,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:22:35,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:22:35,774 INFO L87 Difference]: Start difference. First operand has 288 states, 189 states have (on average 1.470899470899471) internal successors, (278), 205 states have internal predecessors, (278), 70 states have call successors, (70), 28 states have call predecessors, (70), 27 states have return successors, (65), 60 states have call predecessors, (65), 65 states have call successors, (65) Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-21 22:22:37,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:22:37,513 INFO L93 Difference]: Finished difference Result 811 states and 1180 transitions. [2023-11-21 22:22:37,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:22:37,515 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 41 [2023-11-21 22:22:37,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:22:37,532 INFO L225 Difference]: With dead ends: 811 [2023-11-21 22:22:37,532 INFO L226 Difference]: Without dead ends: 463 [2023-11-21 22:22:37,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:22:37,543 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 474 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-21 22:22:37,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [529 Valid, 571 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-21 22:22:37,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2023-11-21 22:22:37,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 430. [2023-11-21 22:22:37,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 293 states have (on average 1.4334470989761092) internal successors, (420), 304 states have internal predecessors, (420), 95 states have call successors, (95), 46 states have call predecessors, (95), 41 states have return successors, (90), 85 states have call predecessors, (90), 90 states have call successors, (90) [2023-11-21 22:22:37,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 605 transitions. [2023-11-21 22:22:37,668 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 605 transitions. Word has length 41 [2023-11-21 22:22:37,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:22:37,669 INFO L495 AbstractCegarLoop]: Abstraction has 430 states and 605 transitions. [2023-11-21 22:22:37,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-21 22:22:37,670 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 605 transitions. [2023-11-21 22:22:37,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-21 22:22:37,675 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:22:37,675 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:22:37,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:22:37,676 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:22:37,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:37,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1372351247, now seen corresponding path program 1 times [2023-11-21 22:22:37,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:22:37,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958830670] [2023-11-21 22:22:37,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:37,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:22:37,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:38,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:22:38,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:38,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-21 22:22:38,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:38,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 22:22:38,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:38,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-21 22:22:38,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:38,264 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:22:38,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:22:38,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958830670] [2023-11-21 22:22:38,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958830670] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:22:38,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:22:38,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:22:38,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478174730] [2023-11-21 22:22:38,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:22:38,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:22:38,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:22:38,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:22:38,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:22:38,269 INFO L87 Difference]: Start difference. First operand 430 states and 605 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-21 22:22:39,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:22:39,927 INFO L93 Difference]: Finished difference Result 871 states and 1265 transitions. [2023-11-21 22:22:39,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:22:39,927 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 48 [2023-11-21 22:22:39,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:22:39,937 INFO L225 Difference]: With dead ends: 871 [2023-11-21 22:22:39,937 INFO L226 Difference]: Without dead ends: 845 [2023-11-21 22:22:39,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:22:39,940 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 465 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-21 22:22:39,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [517 Valid, 843 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-21 22:22:39,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2023-11-21 22:22:40,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 777. [2023-11-21 22:22:40,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 777 states, 543 states have (on average 1.4640883977900552) internal successors, (795), 567 states have internal predecessors, (795), 162 states have call successors, (162), 71 states have call predecessors, (162), 71 states have return successors, (166), 150 states have call predecessors, (166), 157 states have call successors, (166) [2023-11-21 22:22:40,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 777 states to 777 states and 1123 transitions. [2023-11-21 22:22:40,041 INFO L78 Accepts]: Start accepts. Automaton has 777 states and 1123 transitions. Word has length 48 [2023-11-21 22:22:40,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:22:40,042 INFO L495 AbstractCegarLoop]: Abstraction has 777 states and 1123 transitions. [2023-11-21 22:22:40,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-21 22:22:40,042 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states and 1123 transitions. [2023-11-21 22:22:40,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-21 22:22:40,047 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:22:40,047 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2023-11-21 22:22:40,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:22:40,048 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:22:40,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:40,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1305840153, now seen corresponding path program 1 times [2023-11-21 22:22:40,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:22:40,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054543280] [2023-11-21 22:22:40,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:40,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:22:40,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:40,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:22:40,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:40,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-21 22:22:40,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:40,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 22:22:40,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:40,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-21 22:22:40,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:40,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:22:40,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:40,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-21 22:22:40,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:40,507 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:22:40,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:22:40,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054543280] [2023-11-21 22:22:40,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054543280] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:22:40,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:22:40,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 22:22:40,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876015574] [2023-11-21 22:22:40,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:22:40,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:22:40,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:22:40,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:22:40,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:22:40,511 INFO L87 Difference]: Start difference. First operand 777 states and 1123 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-21 22:22:44,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:22:44,225 INFO L93 Difference]: Finished difference Result 2067 states and 2976 transitions. [2023-11-21 22:22:44,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-21 22:22:44,226 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 61 [2023-11-21 22:22:44,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:22:44,240 INFO L225 Difference]: With dead ends: 2067 [2023-11-21 22:22:44,240 INFO L226 Difference]: Without dead ends: 1305 [2023-11-21 22:22:44,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-11-21 22:22:44,244 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 764 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 577 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 1173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 577 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-21 22:22:44,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [809 Valid, 744 Invalid, 1173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [577 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-21 22:22:44,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1305 states. [2023-11-21 22:22:44,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1305 to 1163. [2023-11-21 22:22:44,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 801 states have (on average 1.4556803995006242) internal successors, (1166), 843 states have internal predecessors, (1166), 247 states have call successors, (247), 117 states have call predecessors, (247), 114 states have return successors, (246), 222 states have call predecessors, (246), 242 states have call successors, (246) [2023-11-21 22:22:44,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 1659 transitions. [2023-11-21 22:22:44,475 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 1659 transitions. Word has length 61 [2023-11-21 22:22:44,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:22:44,476 INFO L495 AbstractCegarLoop]: Abstraction has 1163 states and 1659 transitions. [2023-11-21 22:22:44,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-21 22:22:44,476 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 1659 transitions. [2023-11-21 22:22:44,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-21 22:22:44,484 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:22:44,484 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2023-11-21 22:22:44,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 22:22:44,485 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:22:44,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:44,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1577351020, now seen corresponding path program 1 times [2023-11-21 22:22:44,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:22:44,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567514434] [2023-11-21 22:22:44,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:44,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:22:44,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:44,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:22:44,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:44,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-21 22:22:44,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:44,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 22:22:44,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:44,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-21 22:22:44,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:44,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:22:44,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:44,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-21 22:22:44,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:44,710 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:22:44,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:22:44,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567514434] [2023-11-21 22:22:44,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567514434] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:22:44,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:22:44,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:22:44,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415666910] [2023-11-21 22:22:44,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:22:44,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:22:44,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:22:44,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:22:44,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:22:44,713 INFO L87 Difference]: Start difference. First operand 1163 states and 1659 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-21 22:22:46,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:22:46,798 INFO L93 Difference]: Finished difference Result 3265 states and 4674 transitions. [2023-11-21 22:22:46,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 22:22:46,799 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 64 [2023-11-21 22:22:46,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:22:46,815 INFO L225 Difference]: With dead ends: 3265 [2023-11-21 22:22:46,815 INFO L226 Difference]: Without dead ends: 2117 [2023-11-21 22:22:46,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-21 22:22:46,820 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 609 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 400 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 400 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-21 22:22:46,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [652 Valid, 831 Invalid, 992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [400 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-21 22:22:46,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2117 states. [2023-11-21 22:22:47,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2117 to 1339. [2023-11-21 22:22:47,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1339 states, 937 states have (on average 1.4610458911419424) internal successors, (1369), 982 states have internal predecessors, (1369), 269 states have call successors, (269), 135 states have call predecessors, (269), 132 states have return successors, (268), 244 states have call predecessors, (268), 264 states have call successors, (268) [2023-11-21 22:22:47,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 1906 transitions. [2023-11-21 22:22:47,064 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 1906 transitions. Word has length 64 [2023-11-21 22:22:47,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:22:47,065 INFO L495 AbstractCegarLoop]: Abstraction has 1339 states and 1906 transitions. [2023-11-21 22:22:47,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-21 22:22:47,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 1906 transitions. [2023-11-21 22:22:47,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-21 22:22:47,070 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:22:47,070 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:22:47,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 22:22:47,071 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:22:47,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:47,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1068628298, now seen corresponding path program 1 times [2023-11-21 22:22:47,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:22:47,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793727204] [2023-11-21 22:22:47,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:47,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:22:47,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:47,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:22:47,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:47,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-21 22:22:47,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:47,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 22:22:47,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:47,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-21 22:22:47,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:47,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:22:47,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:47,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-21 22:22:47,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:47,634 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-21 22:22:47,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:22:47,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793727204] [2023-11-21 22:22:47,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793727204] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:22:47,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:22:47,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-21 22:22:47,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194578684] [2023-11-21 22:22:47,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:22:47,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 22:22:47,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:22:47,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 22:22:47,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:22:47,637 INFO L87 Difference]: Start difference. First operand 1339 states and 1906 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-21 22:22:49,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:22:49,869 INFO L93 Difference]: Finished difference Result 2721 states and 3893 transitions. [2023-11-21 22:22:49,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 22:22:49,870 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 64 [2023-11-21 22:22:49,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:22:49,881 INFO L225 Difference]: With dead ends: 2721 [2023-11-21 22:22:49,882 INFO L226 Difference]: Without dead ends: 1405 [2023-11-21 22:22:49,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-21 22:22:49,890 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 271 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 784 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 1051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-21 22:22:49,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 944 Invalid, 1051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 784 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-21 22:22:49,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1405 states. [2023-11-21 22:22:50,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1405 to 1297. [2023-11-21 22:22:50,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1297 states, 915 states have (on average 1.459016393442623) internal successors, (1335), 958 states have internal predecessors, (1335), 249 states have call successors, (249), 135 states have call predecessors, (249), 132 states have return successors, (248), 226 states have call predecessors, (248), 244 states have call successors, (248) [2023-11-21 22:22:50,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1297 states to 1297 states and 1832 transitions. [2023-11-21 22:22:50,184 INFO L78 Accepts]: Start accepts. Automaton has 1297 states and 1832 transitions. Word has length 64 [2023-11-21 22:22:50,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:22:50,184 INFO L495 AbstractCegarLoop]: Abstraction has 1297 states and 1832 transitions. [2023-11-21 22:22:50,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-21 22:22:50,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1297 states and 1832 transitions. [2023-11-21 22:22:50,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-21 22:22:50,190 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:22:50,191 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:22:50,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 22:22:50,191 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:22:50,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:50,192 INFO L85 PathProgramCache]: Analyzing trace with hash -932201068, now seen corresponding path program 1 times [2023-11-21 22:22:50,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:22:50,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981121385] [2023-11-21 22:22:50,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:50,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:22:50,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:50,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:22:50,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:50,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-21 22:22:50,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:50,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 22:22:50,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:50,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-21 22:22:50,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:50,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:22:50,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:50,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-21 22:22:50,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:50,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:22:50,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:50,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-21 22:22:50,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:50,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-21 22:22:50,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:50,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-21 22:22:50,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:50,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-21 22:22:50,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:50,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:22:50,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:50,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-21 22:22:50,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:50,867 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:22:50,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:22:50,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981121385] [2023-11-21 22:22:50,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981121385] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:22:50,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:22:50,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-21 22:22:50,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443682404] [2023-11-21 22:22:50,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:22:50,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 22:22:50,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:22:50,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 22:22:50,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-21 22:22:50,870 INFO L87 Difference]: Start difference. First operand 1297 states and 1832 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (18), 7 states have call predecessors, (18), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-21 22:22:55,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:22:55,381 INFO L93 Difference]: Finished difference Result 3335 states and 4747 transitions. [2023-11-21 22:22:55,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-21 22:22:55,382 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (18), 7 states have call predecessors, (18), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 104 [2023-11-21 22:22:55,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:22:55,398 INFO L225 Difference]: With dead ends: 3335 [2023-11-21 22:22:55,398 INFO L226 Difference]: Without dead ends: 2107 [2023-11-21 22:22:55,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2023-11-21 22:22:55,404 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 674 mSDsluCounter, 1300 mSDsCounter, 0 mSdLazyCounter, 1339 mSolverCounterSat, 496 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 1639 SdHoareTripleChecker+Invalid, 1835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 496 IncrementalHoareTripleChecker+Valid, 1339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:22:55,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [712 Valid, 1639 Invalid, 1835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [496 Valid, 1339 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-21 22:22:55,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2107 states. [2023-11-21 22:22:55,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2107 to 1665. [2023-11-21 22:22:55,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1665 states, 1201 states have (on average 1.462947543713572) internal successors, (1757), 1252 states have internal predecessors, (1757), 300 states have call successors, (300), 166 states have call predecessors, (300), 163 states have return successors, (299), 277 states have call predecessors, (299), 295 states have call successors, (299) [2023-11-21 22:22:55,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1665 states to 1665 states and 2356 transitions. [2023-11-21 22:22:55,726 INFO L78 Accepts]: Start accepts. Automaton has 1665 states and 2356 transitions. Word has length 104 [2023-11-21 22:22:55,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:22:55,728 INFO L495 AbstractCegarLoop]: Abstraction has 1665 states and 2356 transitions. [2023-11-21 22:22:55,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (18), 7 states have call predecessors, (18), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-21 22:22:55,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1665 states and 2356 transitions. [2023-11-21 22:22:55,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-21 22:22:55,736 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:22:55,737 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:22:55,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 22:22:55,737 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:22:55,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:55,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1296885669, now seen corresponding path program 1 times [2023-11-21 22:22:55,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:22:55,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850540247] [2023-11-21 22:22:55,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:55,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:22:55,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:56,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:22:56,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:56,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-21 22:22:56,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:56,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 22:22:56,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:56,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-21 22:22:56,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:56,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:22:56,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:56,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-21 22:22:56,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:56,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:22:56,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:56,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-21 22:22:56,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:56,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-21 22:22:56,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:56,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-21 22:22:56,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:56,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-21 22:22:56,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:56,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:22:56,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:56,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-21 22:22:56,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:56,166 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:22:56,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:22:56,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850540247] [2023-11-21 22:22:56,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850540247] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:22:56,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:22:56,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-21 22:22:56,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517706837] [2023-11-21 22:22:56,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:22:56,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 22:22:56,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:22:56,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 22:22:56,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:22:56,170 INFO L87 Difference]: Start difference. First operand 1665 states and 2356 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-21 22:22:58,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:22:58,800 INFO L93 Difference]: Finished difference Result 4258 states and 6067 transitions. [2023-11-21 22:22:58,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-21 22:22:58,801 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 107 [2023-11-21 22:22:58,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:22:58,819 INFO L225 Difference]: With dead ends: 4258 [2023-11-21 22:22:58,820 INFO L226 Difference]: Without dead ends: 2662 [2023-11-21 22:22:58,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2023-11-21 22:22:58,825 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 783 mSDsluCounter, 893 mSDsCounter, 0 mSdLazyCounter, 998 mSolverCounterSat, 477 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 1227 SdHoareTripleChecker+Invalid, 1475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 477 IncrementalHoareTripleChecker+Valid, 998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-21 22:22:58,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [820 Valid, 1227 Invalid, 1475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [477 Valid, 998 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-21 22:22:58,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2662 states. [2023-11-21 22:22:59,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2662 to 2219. [2023-11-21 22:22:59,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2219 states, 1636 states have (on average 1.4639364303178484) internal successors, (2395), 1699 states have internal predecessors, (2395), 373 states have call successors, (373), 212 states have call predecessors, (373), 209 states have return successors, (372), 350 states have call predecessors, (372), 368 states have call successors, (372) [2023-11-21 22:22:59,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2219 states to 2219 states and 3140 transitions. [2023-11-21 22:22:59,252 INFO L78 Accepts]: Start accepts. Automaton has 2219 states and 3140 transitions. Word has length 107 [2023-11-21 22:22:59,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:22:59,253 INFO L495 AbstractCegarLoop]: Abstraction has 2219 states and 3140 transitions. [2023-11-21 22:22:59,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-21 22:22:59,253 INFO L276 IsEmpty]: Start isEmpty. Operand 2219 states and 3140 transitions. [2023-11-21 22:22:59,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-21 22:22:59,259 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:22:59,259 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:22:59,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 22:22:59,260 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:22:59,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:59,260 INFO L85 PathProgramCache]: Analyzing trace with hash -2034283414, now seen corresponding path program 1 times [2023-11-21 22:22:59,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:22:59,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284060791] [2023-11-21 22:22:59,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:59,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:22:59,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:59,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:22:59,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:59,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-21 22:22:59,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:59,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 22:22:59,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:59,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-21 22:22:59,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:59,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:22:59,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:59,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-21 22:22:59,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:59,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:22:59,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:59,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-21 22:22:59,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:59,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-21 22:22:59,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:59,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-21 22:22:59,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:00,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-21 22:23:00,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:00,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:23:00,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:00,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-21 22:23:00,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:00,187 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-21 22:23:00,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:23:00,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284060791] [2023-11-21 22:23:00,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284060791] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:23:00,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815344452] [2023-11-21 22:23:00,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:23:00,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:23:00,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fe4d04-32e6-4864-8f89-d82f2a697705/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:23:00,193 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fe4d04-32e6-4864-8f89-d82f2a697705/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:23:00,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fe4d04-32e6-4864-8f89-d82f2a697705/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 22:23:00,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:00,609 INFO L262 TraceCheckSpWp]: Trace formula consists of 1113 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 22:23:00,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:23:00,741 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-21 22:23:00,741 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:23:00,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815344452] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:23:00,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 22:23:00,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2023-11-21 22:23:00,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878335970] [2023-11-21 22:23:00,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:23:00,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:23:00,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:23:00,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:23:00,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-11-21 22:23:00,745 INFO L87 Difference]: Start difference. First operand 2219 states and 3140 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-21 22:23:01,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:23:01,334 INFO L93 Difference]: Finished difference Result 4383 states and 6208 transitions. [2023-11-21 22:23:01,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:23:01,335 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 112 [2023-11-21 22:23:01,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:23:01,348 INFO L225 Difference]: With dead ends: 4383 [2023-11-21 22:23:01,348 INFO L226 Difference]: Without dead ends: 2207 [2023-11-21 22:23:01,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2023-11-21 22:23:01,355 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 2 mSDsluCounter, 984 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:23:01,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1318 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:23:01,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2207 states. [2023-11-21 22:23:01,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2207 to 2207. [2023-11-21 22:23:01,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2207 states, 1624 states have (on average 1.4624384236453203) internal successors, (2375), 1689 states have internal predecessors, (2375), 373 states have call successors, (373), 212 states have call predecessors, (373), 209 states have return successors, (370), 348 states have call predecessors, (370), 366 states have call successors, (370) [2023-11-21 22:23:01,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2207 states to 2207 states and 3118 transitions. [2023-11-21 22:23:01,798 INFO L78 Accepts]: Start accepts. Automaton has 2207 states and 3118 transitions. Word has length 112 [2023-11-21 22:23:01,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:23:01,799 INFO L495 AbstractCegarLoop]: Abstraction has 2207 states and 3118 transitions. [2023-11-21 22:23:01,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-21 22:23:01,800 INFO L276 IsEmpty]: Start isEmpty. Operand 2207 states and 3118 transitions. [2023-11-21 22:23:01,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-21 22:23:01,806 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:23:01,807 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:23:01,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fe4d04-32e6-4864-8f89-d82f2a697705/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-21 22:23:02,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fe4d04-32e6-4864-8f89-d82f2a697705/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-21 22:23:02,038 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:23:02,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:23:02,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1288809013, now seen corresponding path program 1 times [2023-11-21 22:23:02,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:23:02,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063002112] [2023-11-21 22:23:02,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:23:02,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:23:02,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:02,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:23:02,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:02,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-21 22:23:02,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:02,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 22:23:02,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:02,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-21 22:23:02,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:02,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:23:02,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:02,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-21 22:23:02,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:02,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:23:02,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:02,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-21 22:23:02,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:02,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-21 22:23:02,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:02,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-21 22:23:02,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:02,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-21 22:23:02,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:02,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:23:02,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:02,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-21 22:23:02,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:02,623 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-21 22:23:02,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:23:02,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063002112] [2023-11-21 22:23:02,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063002112] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:23:02,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:23:02,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-21 22:23:02,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900092166] [2023-11-21 22:23:02,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:23:02,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 22:23:02,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:23:02,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 22:23:02,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:23:02,626 INFO L87 Difference]: Start difference. First operand 2207 states and 3118 transitions. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (18), 7 states have call predecessors, (18), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-21 22:23:05,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:23:05,280 INFO L93 Difference]: Finished difference Result 4449 states and 6305 transitions. [2023-11-21 22:23:05,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 22:23:05,280 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (18), 7 states have call predecessors, (18), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 113 [2023-11-21 22:23:05,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:23:05,295 INFO L225 Difference]: With dead ends: 4449 [2023-11-21 22:23:05,295 INFO L226 Difference]: Without dead ends: 2311 [2023-11-21 22:23:05,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2023-11-21 22:23:05,302 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 605 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 420 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-21 22:23:05,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [632 Valid, 658 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [420 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-21 22:23:05,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2311 states. [2023-11-21 22:23:05,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2311 to 2203. [2023-11-21 22:23:05,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2203 states, 1620 states have (on average 1.458641975308642) internal successors, (2363), 1685 states have internal predecessors, (2363), 373 states have call successors, (373), 212 states have call predecessors, (373), 209 states have return successors, (370), 348 states have call predecessors, (370), 366 states have call successors, (370) [2023-11-21 22:23:05,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2203 states to 2203 states and 3106 transitions. [2023-11-21 22:23:05,701 INFO L78 Accepts]: Start accepts. Automaton has 2203 states and 3106 transitions. Word has length 113 [2023-11-21 22:23:05,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:23:05,702 INFO L495 AbstractCegarLoop]: Abstraction has 2203 states and 3106 transitions. [2023-11-21 22:23:05,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (18), 7 states have call predecessors, (18), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-21 22:23:05,702 INFO L276 IsEmpty]: Start isEmpty. Operand 2203 states and 3106 transitions. [2023-11-21 22:23:05,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-21 22:23:05,708 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:23:05,708 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:23:05,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-21 22:23:05,709 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:23:05,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:23:05,709 INFO L85 PathProgramCache]: Analyzing trace with hash -389324805, now seen corresponding path program 1 times [2023-11-21 22:23:05,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:23:05,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89906435] [2023-11-21 22:23:05,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:23:05,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:23:05,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:06,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:23:06,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:06,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-21 22:23:06,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:06,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 22:23:06,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:06,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-21 22:23:06,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:06,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:23:06,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:06,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-21 22:23:06,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:06,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:23:06,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:06,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-21 22:23:06,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:06,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-21 22:23:06,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:06,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-21 22:23:06,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:06,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-21 22:23:06,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:06,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:23:06,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:06,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-21 22:23:06,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:06,500 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-21 22:23:06,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:23:06,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89906435] [2023-11-21 22:23:06,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89906435] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:23:06,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134825498] [2023-11-21 22:23:06,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:23:06,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:23:06,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fe4d04-32e6-4864-8f89-d82f2a697705/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:23:06,503 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fe4d04-32e6-4864-8f89-d82f2a697705/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:23:06,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fe4d04-32e6-4864-8f89-d82f2a697705/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 22:23:06,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:06,889 INFO L262 TraceCheckSpWp]: Trace formula consists of 1118 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 22:23:06,897 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:23:07,128 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-21 22:23:07,129 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:23:07,518 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-21 22:23:07,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134825498] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-21 22:23:07,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:23:07,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11, 6] total 17 [2023-11-21 22:23:07,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259714498] [2023-11-21 22:23:07,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:23:07,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:23:07,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:23:07,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:23:07,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2023-11-21 22:23:07,520 INFO L87 Difference]: Start difference. First operand 2203 states and 3106 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 4 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-21 22:23:09,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:23:09,633 INFO L93 Difference]: Finished difference Result 7802 states and 11035 transitions. [2023-11-21 22:23:09,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:23:09,634 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 4 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 114 [2023-11-21 22:23:09,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:23:09,685 INFO L225 Difference]: With dead ends: 7802 [2023-11-21 22:23:09,685 INFO L226 Difference]: Without dead ends: 7778 [2023-11-21 22:23:09,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 241 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2023-11-21 22:23:09,690 INFO L413 NwaCegarLoop]: 792 mSDtfsCounter, 1057 mSDsluCounter, 1105 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1057 SdHoareTripleChecker+Valid, 1897 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-21 22:23:09,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1057 Valid, 1897 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-21 22:23:09,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7778 states. [2023-11-21 22:23:10,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7778 to 7255. [2023-11-21 22:23:10,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7255 states, 5435 states have (on average 1.4713891444342226) internal successors, (7997), 5632 states have internal predecessors, (7997), 1156 states have call successors, (1156), 663 states have call predecessors, (1156), 663 states have return successors, (1156), 1103 states have call predecessors, (1156), 1146 states have call successors, (1156) [2023-11-21 22:23:11,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7255 states to 7255 states and 10309 transitions. [2023-11-21 22:23:11,006 INFO L78 Accepts]: Start accepts. Automaton has 7255 states and 10309 transitions. Word has length 114 [2023-11-21 22:23:11,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:23:11,007 INFO L495 AbstractCegarLoop]: Abstraction has 7255 states and 10309 transitions. [2023-11-21 22:23:11,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 4 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-21 22:23:11,008 INFO L276 IsEmpty]: Start isEmpty. Operand 7255 states and 10309 transitions. [2023-11-21 22:23:11,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-21 22:23:11,027 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:23:11,027 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:23:11,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fe4d04-32e6-4864-8f89-d82f2a697705/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 22:23:11,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7fe4d04-32e6-4864-8f89-d82f2a697705/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-21 22:23:11,250 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:23:11,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:23:11,251 INFO L85 PathProgramCache]: Analyzing trace with hash -384837944, now seen corresponding path program 1 times [2023-11-21 22:23:11,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:23:11,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838074017] [2023-11-21 22:23:11,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:23:11,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:23:11,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:11,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:23:11,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:11,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-21 22:23:11,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:11,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 22:23:11,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:11,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-21 22:23:11,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:11,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:23:11,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:11,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-21 22:23:11,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:11,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:23:11,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:11,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-21 22:23:11,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:11,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-21 22:23:11,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:11,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-21 22:23:11,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:11,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-21 22:23:11,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:11,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:23:11,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:11,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-21 22:23:11,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:23:11,883 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-21 22:23:11,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:23:11,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838074017] [2023-11-21 22:23:11,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838074017] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:23:11,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:23:11,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-21 22:23:11,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627066905] [2023-11-21 22:23:11,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:23:11,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 22:23:11,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:23:11,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 22:23:11,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-21 22:23:11,887 INFO L87 Difference]: Start difference. First operand 7255 states and 10309 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 4 states have internal predecessors, (79), 3 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13)