./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e574bfb-d786-4781-a559-09c01dde420e/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e574bfb-d786-4781-a559-09c01dde420e/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e574bfb-d786-4781-a559-09c01dde420e/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e574bfb-d786-4781-a559-09c01dde420e/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e574bfb-d786-4781-a559-09c01dde420e/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e574bfb-d786-4781-a559-09c01dde420e/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 0b2aee7f7e67804021e49e5736bb0f9c1b2e215c216274214a3b77fa62ce19be --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:56:06,238 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:56:06,362 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e574bfb-d786-4781-a559-09c01dde420e/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-06 21:56:06,373 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:56:06,374 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:56:06,411 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:56:06,412 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:56:06,413 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:56:06,414 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:56:06,419 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:56:06,420 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:56:06,420 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:56:06,421 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:56:06,423 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:56:06,423 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:56:06,424 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:56:06,424 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:56:06,425 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:56:06,425 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:56:06,426 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:56:06,426 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:56:06,427 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:56:06,428 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:56:06,428 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:56:06,429 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:56:06,429 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:56:06,430 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:56:06,430 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:56:06,430 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:56:06,431 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:56:06,432 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:56:06,433 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:56:06,433 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:56:06,433 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:56:06,433 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:56:06,434 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:56:06,434 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_3e574bfb-d786-4781-a559-09c01dde420e/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e574bfb-d786-4781-a559-09c01dde420e/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b2aee7f7e67804021e49e5736bb0f9c1b2e215c216274214a3b77fa62ce19be [2023-11-06 21:56:06,764 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:56:06,786 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:56:06,789 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:56:06,790 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:56:06,791 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:56:06,792 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e574bfb-d786-4781-a559-09c01dde420e/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i [2023-11-06 21:56:09,987 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:56:10,499 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:56:10,499 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e574bfb-d786-4781-a559-09c01dde420e/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i [2023-11-06 21:56:10,538 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e574bfb-d786-4781-a559-09c01dde420e/bin/uautomizer-verify-WvqO1wxjHP/data/878c62d9e/b206751069774ad981b2b31eb4f79dc4/FLAG87e6eb7a1 [2023-11-06 21:56:10,554 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e574bfb-d786-4781-a559-09c01dde420e/bin/uautomizer-verify-WvqO1wxjHP/data/878c62d9e/b206751069774ad981b2b31eb4f79dc4 [2023-11-06 21:56:10,557 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:56:10,558 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:56:10,560 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:56:10,560 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:56:10,571 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:56:10,572 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:56:10" (1/1) ... [2023-11-06 21:56:10,573 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@534f1661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:10, skipping insertion in model container [2023-11-06 21:56:10,574 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:56:10" (1/1) ... [2023-11-06 21:56:10,743 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:56:11,697 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_3e574bfb-d786-4781-a559-09c01dde420e/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i[182154,182167] [2023-11-06 21:56:12,425 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:56:12,461 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:56:12,647 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("bt %2,%1\n\tsbb %0,%0": "=r" (oldbit): "m" (*((unsigned long *)addr)), "Ir" (nr)); [6121-6122] [2023-11-06 21:56:12,649 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [6137] [2023-11-06 21:56:12,650 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [6140] [2023-11-06 21:56:12,650 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [6143] [2023-11-06 21:56:12,650 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [6146] [2023-11-06 21:56:12,651 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& kernel_stack)); [6163] [2023-11-06 21:56:12,651 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& kernel_stack)); [6166] [2023-11-06 21:56:12,652 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& kernel_stack)); [6169] [2023-11-06 21:56:12,652 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& kernel_stack)); [6172] [2023-11-06 21:56:12,663 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_3e574bfb-d786-4781-a559-09c01dde420e/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i[182154,182167] [2023-11-06 21:56:12,859 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"/work/ldvuser/mutilin/launch/work/current--X--drivers--X--defaultlinux-3.12-rc1.tar.xz--X--144_2a--X--cpachecker/linux-3.12-rc1.tar.xz/csd_deg_dscv/6390/dscv_tempdir/dscv/ri/144_2a/drivers/net/wireless/libertas/if_usb.o.c.prepared"), "i" (692), "i" (12UL)); [7225-7226] [2023-11-06 21:56:12,860 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"/work/ldvuser/mutilin/launch/work/current--X--drivers--X--defaultlinux-3.12-rc1.tar.xz--X--144_2a--X--cpachecker/linux-3.12-rc1.tar.xz/csd_deg_dscv/6390/dscv_tempdir/dscv/ri/144_2a/drivers/net/wireless/libertas/if_usb.o.c.prepared"), "i" (697), "i" (12UL)); [7235-7236] [2023-11-06 21:56:12,934 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:56:12,983 WARN L672 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:56:12,991 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:56:12,992 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:12 WrapperNode [2023-11-06 21:56:12,994 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:56:12,995 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:56:12,995 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:56:12,996 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:56:13,003 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:12" (1/1) ... [2023-11-06 21:56:13,099 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:12" (1/1) ... [2023-11-06 21:56:13,316 INFO L138 Inliner]: procedures = 174, calls = 1416, calls flagged for inlining = 82, calls inlined = 66, statements flattened = 3155 [2023-11-06 21:56:13,317 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:56:13,319 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:56:13,319 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:56:13,319 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:56:13,331 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:12" (1/1) ... [2023-11-06 21:56:13,331 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:12" (1/1) ... [2023-11-06 21:56:13,370 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:12" (1/1) ... [2023-11-06 21:56:13,374 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:12" (1/1) ... [2023-11-06 21:56:13,478 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:12" (1/1) ... [2023-11-06 21:56:13,501 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:12" (1/1) ... [2023-11-06 21:56:13,519 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:12" (1/1) ... [2023-11-06 21:56:13,535 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:12" (1/1) ... [2023-11-06 21:56:13,562 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:56:13,563 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:56:13,563 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:56:13,563 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:56:13,564 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:12" (1/1) ... [2023-11-06 21:56:13,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:56:13,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e574bfb-d786-4781-a559-09c01dde420e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:56:13,607 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e574bfb-d786-4781-a559-09c01dde420e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:56:13,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e574bfb-d786-4781-a559-09c01dde420e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:56:13,667 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_reset_device [2023-11-06 21:56:13,667 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_reset_device [2023-11-06 21:56:13,667 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_resume [2023-11-06 21:56:13,667 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_resume [2023-11-06 21:56:13,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-06 21:56:13,668 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2023-11-06 21:56:13,668 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2023-11-06 21:56:13,668 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_12 [2023-11-06 21:56:13,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_12 [2023-11-06 21:56:13,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-06 21:56:13,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-06 21:56:13,668 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-06 21:56:13,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-06 21:56:13,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 21:56:13,669 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2023-11-06 21:56:13,669 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2023-11-06 21:56:13,670 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2023-11-06 21:56:13,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2023-11-06 21:56:13,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-06 21:56:13,670 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-06 21:56:13,670 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-06 21:56:13,671 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-06 21:56:13,672 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-06 21:56:13,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-06 21:56:13,672 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2023-11-06 21:56:13,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2023-11-06 21:56:13,673 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_submit_rx_urb_fwload [2023-11-06 21:56:13,673 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_submit_rx_urb_fwload [2023-11-06 21:56:13,673 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-11-06 21:56:13,673 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-11-06 21:56:13,673 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2023-11-06 21:56:13,674 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2023-11-06 21:56:13,674 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_submit_rx_urb [2023-11-06 21:56:13,674 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_submit_rx_urb [2023-11-06 21:56:13,674 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_receive_fwload [2023-11-06 21:56:13,674 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_receive_fwload [2023-11-06 21:56:13,674 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-06 21:56:13,674 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-06 21:56:13,675 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_send_fw_pkt [2023-11-06 21:56:13,675 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_send_fw_pkt [2023-11-06 21:56:13,675 INFO L130 BoogieDeclarations]: Found specification of procedure __if_usb_submit_rx_urb [2023-11-06 21:56:13,675 INFO L138 BoogieDeclarations]: Found implementation of procedure __if_usb_submit_rx_urb [2023-11-06 21:56:13,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 21:56:13,675 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-06 21:56:13,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-06 21:56:13,676 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_free [2023-11-06 21:56:13,676 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_free [2023-11-06 21:56:13,676 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-06 21:56:13,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-06 21:56:13,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-06 21:56:13,676 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-06 21:56:13,676 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 21:56:13,677 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 21:56:13,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 21:56:13,677 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2023-11-06 21:56:13,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2023-11-06 21:56:13,678 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_disconnect [2023-11-06 21:56:13,678 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_disconnect [2023-11-06 21:56:13,679 INFO L130 BoogieDeclarations]: Found specification of procedure usb_tx_block [2023-11-06 21:56:13,680 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_tx_block [2023-11-06 21:56:13,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:56:13,681 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2023-11-06 21:56:13,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2023-11-06 21:56:13,681 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_9 [2023-11-06 21:56:13,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_9 [2023-11-06 21:56:13,681 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2023-11-06 21:56:13,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2023-11-06 21:56:13,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 21:56:13,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 21:56:13,682 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-06 21:56:13,682 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-06 21:56:13,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-06 21:56:13,683 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_8 [2023-11-06 21:56:13,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_8 [2023-11-06 21:56:13,683 INFO L130 BoogieDeclarations]: Found specification of procedure current_thread_info [2023-11-06 21:56:13,683 INFO L138 BoogieDeclarations]: Found implementation of procedure current_thread_info [2023-11-06 21:56:13,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 21:56:13,684 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_13 [2023-11-06 21:56:13,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_13 [2023-11-06 21:56:13,684 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2023-11-06 21:56:13,684 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2023-11-06 21:56:13,684 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_num [2023-11-06 21:56:13,685 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_num [2023-11-06 21:56:13,685 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_15 [2023-11-06 21:56:13,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_15 [2023-11-06 21:56:13,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 21:56:13,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-06 21:56:13,686 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-06 21:56:13,686 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-06 21:56:13,686 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2023-11-06 21:56:13,686 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2023-11-06 21:56:13,687 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_remove_card [2023-11-06 21:56:13,687 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_remove_card [2023-11-06 21:56:13,687 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-06 21:56:13,687 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-06 21:56:13,687 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2023-11-06 21:56:13,687 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2023-11-06 21:56:13,687 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_receive [2023-11-06 21:56:13,688 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_receive [2023-11-06 21:56:13,688 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2023-11-06 21:56:13,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2023-11-06 21:56:13,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:56:13,688 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2023-11-06 21:56:13,688 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2023-11-06 21:56:13,688 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-06 21:56:13,689 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-06 21:56:13,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-06 21:56:13,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:56:13,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:56:14,312 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:56:14,315 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:56:14,672 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-06 21:56:16,013 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2023-11-06 21:56:17,357 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:56:17,381 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:56:17,382 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 21:56:17,387 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:56:17 BoogieIcfgContainer [2023-11-06 21:56:17,387 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:56:17,390 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:56:17,390 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:56:17,393 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:56:17,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:56:10" (1/3) ... [2023-11-06 21:56:17,396 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e6a98c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:56:17, skipping insertion in model container [2023-11-06 21:56:17,396 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:12" (2/3) ... [2023-11-06 21:56:17,396 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e6a98c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:56:17, skipping insertion in model container [2023-11-06 21:56:17,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:56:17" (3/3) ... [2023-11-06 21:56:17,399 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i [2023-11-06 21:56:17,419 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:56:17,420 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 21:56:17,513 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:56:17,521 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=LoopsAndPotentialCycles, 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;@59f72bed, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:56:17,521 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 21:56:17,531 INFO L276 IsEmpty]: Start isEmpty. Operand has 1020 states, 750 states have (on average 1.4693333333333334) internal successors, (1102), 780 states have internal predecessors, (1102), 224 states have call successors, (224), 46 states have call predecessors, (224), 44 states have return successors, (218), 212 states have call predecessors, (218), 218 states have call successors, (218) [2023-11-06 21:56:17,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-06 21:56:17,544 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:56:17,545 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:56:17,546 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:56:17,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:56:17,551 INFO L85 PathProgramCache]: Analyzing trace with hash -940172488, now seen corresponding path program 1 times [2023-11-06 21:56:17,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:56:17,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349526370] [2023-11-06 21:56:17,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:56:17,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:56:17,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:18,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:56:18,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:18,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 21:56:18,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:18,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:56:18,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:56:18,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349526370] [2023-11-06 21:56:18,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349526370] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:56:18,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:56:18,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 21:56:18,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943714476] [2023-11-06 21:56:18,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:56:18,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:56:18,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:56:18,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:56:18,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:56:18,644 INFO L87 Difference]: Start difference. First operand has 1020 states, 750 states have (on average 1.4693333333333334) internal successors, (1102), 780 states have internal predecessors, (1102), 224 states have call successors, (224), 46 states have call predecessors, (224), 44 states have return successors, (218), 212 states have call predecessors, (218), 218 states have call successors, (218) Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 21:56:24,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:56:24,327 INFO L93 Difference]: Finished difference Result 3411 states and 5296 transitions. [2023-11-06 21:56:24,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:56:24,330 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 29 [2023-11-06 21:56:24,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:56:24,368 INFO L225 Difference]: With dead ends: 3411 [2023-11-06 21:56:24,368 INFO L226 Difference]: Without dead ends: 2368 [2023-11-06 21:56:24,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-06 21:56:24,384 INFO L413 NwaCegarLoop]: 1236 mSDtfsCounter, 3344 mSDsluCounter, 2342 mSDsCounter, 0 mSdLazyCounter, 1502 mSolverCounterSat, 1503 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3501 SdHoareTripleChecker+Valid, 3578 SdHoareTripleChecker+Invalid, 3005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1503 IncrementalHoareTripleChecker+Valid, 1502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:56:24,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3501 Valid, 3578 Invalid, 3005 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1503 Valid, 1502 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-11-06 21:56:24,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2368 states. [2023-11-06 21:56:24,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2368 to 1973. [2023-11-06 21:56:24,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1973 states, 1459 states have (on average 1.4557916381082934) internal successors, (2124), 1499 states have internal predecessors, (2124), 428 states have call successors, (428), 86 states have call predecessors, (428), 85 states have return successors, (423), 411 states have call predecessors, (423), 423 states have call successors, (423) [2023-11-06 21:56:24,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1973 states to 1973 states and 2975 transitions. [2023-11-06 21:56:24,669 INFO L78 Accepts]: Start accepts. Automaton has 1973 states and 2975 transitions. Word has length 29 [2023-11-06 21:56:24,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:56:24,670 INFO L495 AbstractCegarLoop]: Abstraction has 1973 states and 2975 transitions. [2023-11-06 21:56:24,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 21:56:24,671 INFO L276 IsEmpty]: Start isEmpty. Operand 1973 states and 2975 transitions. [2023-11-06 21:56:24,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-06 21:56:24,675 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:56:24,676 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:56:24,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 21:56:24,676 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:56:24,677 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:56:24,677 INFO L85 PathProgramCache]: Analyzing trace with hash 2032318837, now seen corresponding path program 1 times [2023-11-06 21:56:24,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:56:24,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370894267] [2023-11-06 21:56:24,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:56:24,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:56:24,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:24,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:56:24,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:24,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 21:56:24,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:24,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-06 21:56:24,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:24,931 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 21:56:24,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:56:24,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370894267] [2023-11-06 21:56:24,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370894267] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:56:24,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:56:24,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 21:56:24,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27767222] [2023-11-06 21:56:24,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:56:24,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:56:24,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:56:24,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:56:24,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:56:24,936 INFO L87 Difference]: Start difference. First operand 1973 states and 2975 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-06 21:56:28,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:56:28,123 INFO L93 Difference]: Finished difference Result 2394 states and 3631 transitions. [2023-11-06 21:56:28,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:56:28,124 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2023-11-06 21:56:28,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:56:28,148 INFO L225 Difference]: With dead ends: 2394 [2023-11-06 21:56:28,149 INFO L226 Difference]: Without dead ends: 2381 [2023-11-06 21:56:28,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-06 21:56:28,153 INFO L413 NwaCegarLoop]: 1222 mSDtfsCounter, 2405 mSDsluCounter, 1193 mSDsCounter, 0 mSdLazyCounter, 979 mSolverCounterSat, 883 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2531 SdHoareTripleChecker+Valid, 2415 SdHoareTripleChecker+Invalid, 1862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 883 IncrementalHoareTripleChecker+Valid, 979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-06 21:56:28,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2531 Valid, 2415 Invalid, 1862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [883 Valid, 979 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-06 21:56:28,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2381 states. [2023-11-06 21:56:28,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2381 to 1973. [2023-11-06 21:56:28,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1973 states, 1459 states have (on average 1.455106237148732) internal successors, (2123), 1499 states have internal predecessors, (2123), 428 states have call successors, (428), 86 states have call predecessors, (428), 85 states have return successors, (423), 411 states have call predecessors, (423), 423 states have call successors, (423) [2023-11-06 21:56:28,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1973 states to 1973 states and 2974 transitions. [2023-11-06 21:56:28,400 INFO L78 Accepts]: Start accepts. Automaton has 1973 states and 2974 transitions. Word has length 39 [2023-11-06 21:56:28,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:56:28,401 INFO L495 AbstractCegarLoop]: Abstraction has 1973 states and 2974 transitions. [2023-11-06 21:56:28,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-06 21:56:28,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1973 states and 2974 transitions. [2023-11-06 21:56:28,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-06 21:56:28,404 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:56:28,404 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:56:28,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 21:56:28,404 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:56:28,405 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:56:28,405 INFO L85 PathProgramCache]: Analyzing trace with hash 2089577139, now seen corresponding path program 1 times [2023-11-06 21:56:28,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:56:28,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800781187] [2023-11-06 21:56:28,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:56:28,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:56:28,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:29,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:56:29,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:29,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 21:56:29,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:29,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-06 21:56:29,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:29,148 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 21:56:29,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:56:29,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800781187] [2023-11-06 21:56:29,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800781187] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:56:29,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:56:29,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 21:56:29,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452202343] [2023-11-06 21:56:29,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:56:29,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:56:29,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:56:29,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:56:29,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:56:29,153 INFO L87 Difference]: Start difference. First operand 1973 states and 2974 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-06 21:56:34,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:56:34,713 INFO L93 Difference]: Finished difference Result 6665 states and 10327 transitions. [2023-11-06 21:56:34,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:56:34,714 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2023-11-06 21:56:34,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:56:34,752 INFO L225 Difference]: With dead ends: 6665 [2023-11-06 21:56:34,752 INFO L226 Difference]: Without dead ends: 4711 [2023-11-06 21:56:34,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-06 21:56:34,765 INFO L413 NwaCegarLoop]: 1338 mSDtfsCounter, 3378 mSDsluCounter, 2403 mSDsCounter, 0 mSdLazyCounter, 1501 mSolverCounterSat, 1480 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3516 SdHoareTripleChecker+Valid, 3741 SdHoareTripleChecker+Invalid, 2981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1480 IncrementalHoareTripleChecker+Valid, 1501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:56:34,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3516 Valid, 3741 Invalid, 2981 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1480 Valid, 1501 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-11-06 21:56:34,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4711 states. [2023-11-06 21:56:35,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4711 to 4106. [2023-11-06 21:56:35,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4106 states, 3039 states have (on average 1.449489963803883) internal successors, (4405), 3115 states have internal predecessors, (4405), 874 states have call successors, (874), 169 states have call predecessors, (874), 192 states have return successors, (989), 865 states have call predecessors, (989), 869 states have call successors, (989) [2023-11-06 21:56:35,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4106 states to 4106 states and 6268 transitions. [2023-11-06 21:56:35,145 INFO L78 Accepts]: Start accepts. Automaton has 4106 states and 6268 transitions. Word has length 39 [2023-11-06 21:56:35,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:56:35,146 INFO L495 AbstractCegarLoop]: Abstraction has 4106 states and 6268 transitions. [2023-11-06 21:56:35,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-06 21:56:35,146 INFO L276 IsEmpty]: Start isEmpty. Operand 4106 states and 6268 transitions. [2023-11-06 21:56:35,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-06 21:56:35,181 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:56:35,181 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:56:35,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 21:56:35,182 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:56:35,182 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:56:35,183 INFO L85 PathProgramCache]: Analyzing trace with hash 351859908, now seen corresponding path program 1 times [2023-11-06 21:56:35,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:56:35,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262326146] [2023-11-06 21:56:35,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:56:35,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:56:35,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:35,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:56:35,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:35,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 21:56:35,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:35,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-06 21:56:35,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:35,852 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 21:56:35,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:56:35,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262326146] [2023-11-06 21:56:35,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262326146] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:56:35,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:56:35,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 21:56:35,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101227897] [2023-11-06 21:56:35,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:56:35,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:56:35,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:56:35,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:56:35,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:56:35,856 INFO L87 Difference]: Start difference. First operand 4106 states and 6268 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-06 21:56:40,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:56:40,978 INFO L93 Difference]: Finished difference Result 13456 states and 21179 transitions. [2023-11-06 21:56:40,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:56:40,992 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2023-11-06 21:56:40,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:56:41,076 INFO L225 Difference]: With dead ends: 13456 [2023-11-06 21:56:41,076 INFO L226 Difference]: Without dead ends: 9369 [2023-11-06 21:56:41,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-06 21:56:41,109 INFO L413 NwaCegarLoop]: 1254 mSDtfsCounter, 3394 mSDsluCounter, 2264 mSDsCounter, 0 mSdLazyCounter, 1469 mSolverCounterSat, 1499 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3538 SdHoareTripleChecker+Valid, 3518 SdHoareTripleChecker+Invalid, 2968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1499 IncrementalHoareTripleChecker+Valid, 1469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-06 21:56:41,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3538 Valid, 3518 Invalid, 2968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1499 Valid, 1469 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-11-06 21:56:41,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9369 states. [2023-11-06 21:56:41,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9369 to 8365. [2023-11-06 21:56:41,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8365 states, 6192 states have (on average 1.4452519379844961) internal successors, (8949), 6340 states have internal predecessors, (8949), 1766 states have call successors, (1766), 335 states have call predecessors, (1766), 406 states have return successors, (2221), 1773 states have call predecessors, (2221), 1761 states have call successors, (2221) [2023-11-06 21:56:41,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8365 states to 8365 states and 12936 transitions. [2023-11-06 21:56:41,961 INFO L78 Accepts]: Start accepts. Automaton has 8365 states and 12936 transitions. Word has length 40 [2023-11-06 21:56:41,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:56:41,964 INFO L495 AbstractCegarLoop]: Abstraction has 8365 states and 12936 transitions. [2023-11-06 21:56:41,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-06 21:56:41,964 INFO L276 IsEmpty]: Start isEmpty. Operand 8365 states and 12936 transitions. [2023-11-06 21:56:41,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-06 21:56:41,969 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:56:41,969 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:56:41,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 21:56:41,969 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:56:41,970 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:56:41,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1977761834, now seen corresponding path program 1 times [2023-11-06 21:56:41,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:56:41,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780245192] [2023-11-06 21:56:41,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:56:41,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:56:42,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:42,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:56:42,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:42,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 21:56:42,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:42,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-06 21:56:42,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:42,232 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 21:56:42,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:56:42,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780245192] [2023-11-06 21:56:42,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780245192] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:56:42,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:56:42,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 21:56:42,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954421188] [2023-11-06 21:56:42,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:56:42,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:56:42,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:56:42,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:56:42,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:56:42,235 INFO L87 Difference]: Start difference. First operand 8365 states and 12936 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-06 21:56:47,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:56:47,120 INFO L93 Difference]: Finished difference Result 9367 states and 14578 transitions. [2023-11-06 21:56:47,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:56:47,124 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41 [2023-11-06 21:56:47,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:56:47,211 INFO L225 Difference]: With dead ends: 9367 [2023-11-06 21:56:47,212 INFO L226 Difference]: Without dead ends: 9364 [2023-11-06 21:56:47,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-06 21:56:47,219 INFO L413 NwaCegarLoop]: 1257 mSDtfsCounter, 3384 mSDsluCounter, 2266 mSDsCounter, 0 mSdLazyCounter, 1451 mSolverCounterSat, 1499 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3529 SdHoareTripleChecker+Valid, 3523 SdHoareTripleChecker+Invalid, 2950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1499 IncrementalHoareTripleChecker+Valid, 1451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-06 21:56:47,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3529 Valid, 3523 Invalid, 2950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1499 Valid, 1451 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-11-06 21:56:47,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9364 states. [2023-11-06 21:56:47,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9364 to 8366. [2023-11-06 21:56:48,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8366 states, 6193 states have (on average 1.445180041982884) internal successors, (8950), 6341 states have internal predecessors, (8950), 1766 states have call successors, (1766), 335 states have call predecessors, (1766), 406 states have return successors, (2221), 1773 states have call predecessors, (2221), 1761 states have call successors, (2221) [2023-11-06 21:56:48,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8366 states to 8366 states and 12937 transitions. [2023-11-06 21:56:48,052 INFO L78 Accepts]: Start accepts. Automaton has 8366 states and 12937 transitions. Word has length 41 [2023-11-06 21:56:48,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:56:48,053 INFO L495 AbstractCegarLoop]: Abstraction has 8366 states and 12937 transitions. [2023-11-06 21:56:48,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-06 21:56:48,053 INFO L276 IsEmpty]: Start isEmpty. Operand 8366 states and 12937 transitions. [2023-11-06 21:56:48,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-06 21:56:48,055 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:56:48,055 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:56:48,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 21:56:48,055 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:56:48,056 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:56:48,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1181586937, now seen corresponding path program 1 times [2023-11-06 21:56:48,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:56:48,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021641350] [2023-11-06 21:56:48,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:56:48,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:56:48,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:48,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:56:48,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:48,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 21:56:48,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:48,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-06 21:56:48,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:48,338 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 21:56:48,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:56:48,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021641350] [2023-11-06 21:56:48,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021641350] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:56:48,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:56:48,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 21:56:48,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139302291] [2023-11-06 21:56:48,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:56:48,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:56:48,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:56:48,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:56:48,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:56:48,343 INFO L87 Difference]: Start difference. First operand 8366 states and 12937 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-06 21:56:51,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:56:51,700 INFO L93 Difference]: Finished difference Result 9363 states and 14574 transitions. [2023-11-06 21:56:51,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:56:51,704 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 42 [2023-11-06 21:56:51,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:56:51,762 INFO L225 Difference]: With dead ends: 9363 [2023-11-06 21:56:51,762 INFO L226 Difference]: Without dead ends: 9360 [2023-11-06 21:56:51,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:56:51,768 INFO L413 NwaCegarLoop]: 1203 mSDtfsCounter, 2383 mSDsluCounter, 1155 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 879 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2508 SdHoareTripleChecker+Valid, 2358 SdHoareTripleChecker+Invalid, 1849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 879 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-06 21:56:51,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2508 Valid, 2358 Invalid, 1849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [879 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-06 21:56:51,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9360 states. [2023-11-06 21:56:52,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9360 to 8365. [2023-11-06 21:56:52,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8365 states, 6193 states have (on average 1.4450185693524948) internal successors, (8949), 6340 states have internal predecessors, (8949), 1765 states have call successors, (1765), 335 states have call predecessors, (1765), 406 states have return successors, (2221), 1773 states have call predecessors, (2221), 1761 states have call successors, (2221) [2023-11-06 21:56:52,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8365 states to 8365 states and 12935 transitions. [2023-11-06 21:56:52,571 INFO L78 Accepts]: Start accepts. Automaton has 8365 states and 12935 transitions. Word has length 42 [2023-11-06 21:56:52,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:56:52,571 INFO L495 AbstractCegarLoop]: Abstraction has 8365 states and 12935 transitions. [2023-11-06 21:56:52,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-06 21:56:52,572 INFO L276 IsEmpty]: Start isEmpty. Operand 8365 states and 12935 transitions. [2023-11-06 21:56:52,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-06 21:56:52,574 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:56:52,574 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:56:52,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 21:56:52,574 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:56:52,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:56:52,575 INFO L85 PathProgramCache]: Analyzing trace with hash 2025003257, now seen corresponding path program 1 times [2023-11-06 21:56:52,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:56:52,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545264602] [2023-11-06 21:56:52,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:56:52,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:56:52,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:52,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:56:52,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:52,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 21:56:52,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:52,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-06 21:56:52,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:52,826 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 21:56:52,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:56:52,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545264602] [2023-11-06 21:56:52,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545264602] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:56:52,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:56:52,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 21:56:52,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197740176] [2023-11-06 21:56:52,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:56:52,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:56:52,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:56:52,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:56:52,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:56:52,830 INFO L87 Difference]: Start difference. First operand 8365 states and 12935 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-06 21:56:55,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:56:55,801 INFO L93 Difference]: Finished difference Result 9362 states and 14572 transitions. [2023-11-06 21:56:55,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:56:55,802 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 43 [2023-11-06 21:56:55,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:56:55,858 INFO L225 Difference]: With dead ends: 9362 [2023-11-06 21:56:55,858 INFO L226 Difference]: Without dead ends: 9350 [2023-11-06 21:56:55,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:56:55,866 INFO L413 NwaCegarLoop]: 1203 mSDtfsCounter, 2377 mSDsluCounter, 1155 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 879 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2504 SdHoareTripleChecker+Valid, 2358 SdHoareTripleChecker+Invalid, 1846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 879 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-06 21:56:55,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2504 Valid, 2358 Invalid, 1846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [879 Valid, 967 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-06 21:56:55,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9350 states. [2023-11-06 21:56:56,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9350 to 8355. [2023-11-06 21:56:56,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8355 states, 6184 states have (on average 1.445019404915912) internal successors, (8936), 6330 states have internal predecessors, (8936), 1764 states have call successors, (1764), 335 states have call predecessors, (1764), 406 states have return successors, (2221), 1773 states have call predecessors, (2221), 1761 states have call successors, (2221) [2023-11-06 21:56:56,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8355 states to 8355 states and 12921 transitions. [2023-11-06 21:56:56,833 INFO L78 Accepts]: Start accepts. Automaton has 8355 states and 12921 transitions. Word has length 43 [2023-11-06 21:56:56,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:56:56,834 INFO L495 AbstractCegarLoop]: Abstraction has 8355 states and 12921 transitions. [2023-11-06 21:56:56,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-06 21:56:56,834 INFO L276 IsEmpty]: Start isEmpty. Operand 8355 states and 12921 transitions. [2023-11-06 21:56:56,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-11-06 21:56:56,858 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:56:56,859 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:56:56,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 21:56:56,859 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:56:56,860 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:56:56,860 INFO L85 PathProgramCache]: Analyzing trace with hash 4332765, now seen corresponding path program 1 times [2023-11-06 21:56:56,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:56:56,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034388683] [2023-11-06 21:56:56,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:56:56,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:56:56,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:57,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:56:57,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:57,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 21:56:57,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:57,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-06 21:56:57,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:57,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:56:57,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:57,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-06 21:56:57,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:57,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:56:57,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:57,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-06 21:56:57,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:57,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:56:57,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:57,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 21:56:57,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:57,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-06 21:56:57,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:57,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:56:57,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:57,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 21:56:57,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:57,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 21:56:57,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:57,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 21:56:57,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:57,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-06 21:56:57,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:57,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-06 21:56:57,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:57,606 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-06 21:56:57,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:56:57,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034388683] [2023-11-06 21:56:57,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034388683] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:56:57,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:56:57,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 21:56:57,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781075665] [2023-11-06 21:56:57,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:56:57,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 21:56:57,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:56:57,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 21:56:57,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-06 21:56:57,611 INFO L87 Difference]: Start difference. First operand 8355 states and 12921 transitions. Second operand has 10 states, 10 states have (on average 10.1) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (17), 9 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-06 21:57:02,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:57:02,910 INFO L93 Difference]: Finished difference Result 19956 states and 30951 transitions. [2023-11-06 21:57:02,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 21:57:02,911 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.1) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (17), 9 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 148 [2023-11-06 21:57:02,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:57:02,976 INFO L225 Difference]: With dead ends: 19956 [2023-11-06 21:57:02,976 INFO L226 Difference]: Without dead ends: 11620 [2023-11-06 21:57:03,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2023-11-06 21:57:03,021 INFO L413 NwaCegarLoop]: 1238 mSDtfsCounter, 3329 mSDsluCounter, 3036 mSDsCounter, 0 mSdLazyCounter, 1778 mSolverCounterSat, 2001 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3418 SdHoareTripleChecker+Valid, 4274 SdHoareTripleChecker+Invalid, 3779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2001 IncrementalHoareTripleChecker+Valid, 1778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-06 21:57:03,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3418 Valid, 4274 Invalid, 3779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2001 Valid, 1778 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-11-06 21:57:03,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11620 states. [2023-11-06 21:57:03,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11620 to 9919. [2023-11-06 21:57:03,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9919 states, 7357 states have (on average 1.4410765257577818) internal successors, (10602), 7535 states have internal predecessors, (10602), 2018 states have call successors, (2018), 368 states have call predecessors, (2018), 543 states have return successors, (2637), 2111 states have call predecessors, (2637), 2015 states have call successors, (2637) [2023-11-06 21:57:04,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9919 states to 9919 states and 15257 transitions. [2023-11-06 21:57:04,040 INFO L78 Accepts]: Start accepts. Automaton has 9919 states and 15257 transitions. Word has length 148 [2023-11-06 21:57:04,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:57:04,041 INFO L495 AbstractCegarLoop]: Abstraction has 9919 states and 15257 transitions. [2023-11-06 21:57:04,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.1) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (17), 9 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-06 21:57:04,041 INFO L276 IsEmpty]: Start isEmpty. Operand 9919 states and 15257 transitions. [2023-11-06 21:57:04,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-11-06 21:57:04,066 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:57:04,066 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:04,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 21:57:04,067 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:57:04,067 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:04,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1928043681, now seen corresponding path program 1 times [2023-11-06 21:57:04,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:04,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904456089] [2023-11-06 21:57:04,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:04,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:04,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:04,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:57:04,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:04,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 21:57:04,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:04,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-06 21:57:04,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:04,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-06 21:57:04,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:04,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:57:04,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:04,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-06 21:57:04,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:04,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:57:04,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:04,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-06 21:57:04,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:04,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:57:04,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:04,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 21:57:04,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:04,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-06 21:57:04,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:04,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:04,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:04,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 21:57:04,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:04,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 21:57:04,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:04,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 21:57:04,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:04,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-06 21:57:04,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:04,675 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-06 21:57:04,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:04,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904456089] [2023-11-06 21:57:04,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904456089] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:04,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:04,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 21:57:04,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514763268] [2023-11-06 21:57:04,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:04,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 21:57:04,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:04,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 21:57:04,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-06 21:57:04,680 INFO L87 Difference]: Start difference. First operand 9919 states and 15257 transitions. Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (17), 9 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-06 21:57:11,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:57:11,183 INFO L93 Difference]: Finished difference Result 21500 states and 33267 transitions. [2023-11-06 21:57:11,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 21:57:11,184 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (17), 9 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 157 [2023-11-06 21:57:11,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:57:11,260 INFO L225 Difference]: With dead ends: 21500 [2023-11-06 21:57:11,260 INFO L226 Difference]: Without dead ends: 11604 [2023-11-06 21:57:11,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-06 21:57:11,316 INFO L413 NwaCegarLoop]: 1200 mSDtfsCounter, 2029 mSDsluCounter, 5444 mSDsCounter, 0 mSdLazyCounter, 2975 mSolverCounterSat, 1193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2106 SdHoareTripleChecker+Valid, 6644 SdHoareTripleChecker+Invalid, 4168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1193 IncrementalHoareTripleChecker+Valid, 2975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-11-06 21:57:11,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2106 Valid, 6644 Invalid, 4168 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1193 Valid, 2975 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-11-06 21:57:11,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11604 states. [2023-11-06 21:57:12,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11604 to 9927. [2023-11-06 21:57:12,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9927 states, 7365 states have (on average 1.4405974202308214) internal successors, (10610), 7543 states have internal predecessors, (10610), 2018 states have call successors, (2018), 368 states have call predecessors, (2018), 543 states have return successors, (2637), 2111 states have call predecessors, (2637), 2015 states have call successors, (2637) [2023-11-06 21:57:12,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9927 states to 9927 states and 15265 transitions. [2023-11-06 21:57:12,287 INFO L78 Accepts]: Start accepts. Automaton has 9927 states and 15265 transitions. Word has length 157 [2023-11-06 21:57:12,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:57:12,288 INFO L495 AbstractCegarLoop]: Abstraction has 9927 states and 15265 transitions. [2023-11-06 21:57:12,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (17), 9 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-06 21:57:12,289 INFO L276 IsEmpty]: Start isEmpty. Operand 9927 states and 15265 transitions. [2023-11-06 21:57:12,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-11-06 21:57:12,312 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:57:12,313 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:12,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 21:57:12,313 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:57:12,314 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:12,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1955109283, now seen corresponding path program 1 times [2023-11-06 21:57:12,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:12,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844108877] [2023-11-06 21:57:12,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:12,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:12,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:12,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:57:12,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:12,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 21:57:12,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:12,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-06 21:57:12,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:12,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-06 21:57:12,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:12,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:57:12,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:12,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-06 21:57:12,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:12,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:57:12,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:12,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-06 21:57:12,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:12,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:57:12,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:12,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 21:57:12,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:12,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-06 21:57:12,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:12,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:12,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:12,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 21:57:12,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:13,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 21:57:13,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:13,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 21:57:13,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:13,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-06 21:57:13,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:13,062 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-06 21:57:13,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:13,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844108877] [2023-11-06 21:57:13,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844108877] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:57:13,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268657760] [2023-11-06 21:57:13,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:13,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:57:13,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e574bfb-d786-4781-a559-09c01dde420e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:57:13,071 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e574bfb-d786-4781-a559-09c01dde420e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:57:13,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e574bfb-d786-4781-a559-09c01dde420e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 21:57:13,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:14,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 2751 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 21:57:14,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:57:14,239 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-06 21:57:14,239 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:57:14,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268657760] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:14,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:57:14,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2023-11-06 21:57:14,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401585618] [2023-11-06 21:57:14,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:14,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:57:14,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:14,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:57:14,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-11-06 21:57:14,243 INFO L87 Difference]: Start difference. First operand 9927 states and 15265 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-06 21:57:16,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:57:16,473 INFO L93 Difference]: Finished difference Result 29815 states and 45893 transitions. [2023-11-06 21:57:16,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 21:57:16,474 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 157 [2023-11-06 21:57:16,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:57:16,592 INFO L225 Difference]: With dead ends: 29815 [2023-11-06 21:57:16,592 INFO L226 Difference]: Without dead ends: 19911 [2023-11-06 21:57:16,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2023-11-06 21:57:16,811 INFO L413 NwaCegarLoop]: 2920 mSDtfsCounter, 1739 mSDsluCounter, 6781 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1777 SdHoareTripleChecker+Valid, 9701 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 21:57:16,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1777 Valid, 9701 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 21:57:16,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19911 states. [2023-11-06 21:57:18,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19911 to 9975. [2023-11-06 21:57:18,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9975 states, 7397 states have (on average 1.4386913613627146) internal successors, (10642), 7567 states have internal predecessors, (10642), 2034 states have call successors, (2034), 368 states have call predecessors, (2034), 543 states have return successors, (2671), 2127 states have call predecessors, (2671), 2031 states have call successors, (2671) [2023-11-06 21:57:18,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9975 states to 9975 states and 15347 transitions. [2023-11-06 21:57:18,262 INFO L78 Accepts]: Start accepts. Automaton has 9975 states and 15347 transitions. Word has length 157 [2023-11-06 21:57:18,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:57:18,262 INFO L495 AbstractCegarLoop]: Abstraction has 9975 states and 15347 transitions. [2023-11-06 21:57:18,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-06 21:57:18,263 INFO L276 IsEmpty]: Start isEmpty. Operand 9975 states and 15347 transitions. [2023-11-06 21:57:18,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-11-06 21:57:18,284 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:57:18,284 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:18,295 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e574bfb-d786-4781-a559-09c01dde420e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-06 21:57:18,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e574bfb-d786-4781-a559-09c01dde420e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:57:18,493 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:57:18,494 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:18,494 INFO L85 PathProgramCache]: Analyzing trace with hash 943992033, now seen corresponding path program 1 times [2023-11-06 21:57:18,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:18,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899915540] [2023-11-06 21:57:18,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:18,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:18,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:19,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:57:19,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:19,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 21:57:19,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:19,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-06 21:57:19,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:19,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-06 21:57:19,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:19,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:57:19,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:19,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-06 21:57:19,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:19,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:57:19,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:19,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-06 21:57:19,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:19,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:57:19,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:19,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 21:57:19,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:19,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-06 21:57:19,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:19,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:19,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:20,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 21:57:20,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:20,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 21:57:20,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:20,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 21:57:20,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:20,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-06 21:57:20,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:20,060 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-06 21:57:20,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:20,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899915540] [2023-11-06 21:57:20,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899915540] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:57:20,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983035790] [2023-11-06 21:57:20,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:20,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:57:20,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e574bfb-d786-4781-a559-09c01dde420e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:57:20,063 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e574bfb-d786-4781-a559-09c01dde420e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:57:20,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e574bfb-d786-4781-a559-09c01dde420e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 21:57:20,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:20,950 INFO L262 TraceCheckSpWp]: Trace formula consists of 2746 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 21:57:20,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:57:21,004 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-06 21:57:21,004 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:57:21,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983035790] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:21,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:57:21,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2023-11-06 21:57:21,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416572236] [2023-11-06 21:57:21,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:21,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:57:21,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:21,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:57:21,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-06 21:57:21,008 INFO L87 Difference]: Start difference. First operand 9975 states and 15347 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-06 21:57:22,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:57:22,410 INFO L93 Difference]: Finished difference Result 19927 states and 30669 transitions. [2023-11-06 21:57:22,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:57:22,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 157 [2023-11-06 21:57:22,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:57:22,454 INFO L225 Difference]: With dead ends: 19927 [2023-11-06 21:57:22,454 INFO L226 Difference]: Without dead ends: 9975 [2023-11-06 21:57:22,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-06 21:57:22,480 INFO L413 NwaCegarLoop]: 1501 mSDtfsCounter, 3 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2998 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:57:22,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2998 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:57:22,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9975 states. [2023-11-06 21:57:23,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9975 to 9975. [2023-11-06 21:57:23,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9975 states, 7397 states have (on average 1.437609841827768) internal successors, (10634), 7567 states have internal predecessors, (10634), 2034 states have call successors, (2034), 368 states have call predecessors, (2034), 543 states have return successors, (2671), 2127 states have call predecessors, (2671), 2031 states have call successors, (2671) [2023-11-06 21:57:23,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9975 states to 9975 states and 15339 transitions. [2023-11-06 21:57:23,621 INFO L78 Accepts]: Start accepts. Automaton has 9975 states and 15339 transitions. Word has length 157 [2023-11-06 21:57:23,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:57:23,621 INFO L495 AbstractCegarLoop]: Abstraction has 9975 states and 15339 transitions. [2023-11-06 21:57:23,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-06 21:57:23,622 INFO L276 IsEmpty]: Start isEmpty. Operand 9975 states and 15339 transitions. [2023-11-06 21:57:23,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-11-06 21:57:23,643 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:57:23,644 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:23,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e574bfb-d786-4781-a559-09c01dde420e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 21:57:23,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e574bfb-d786-4781-a559-09c01dde420e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:57:23,855 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:57:23,855 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:23,855 INFO L85 PathProgramCache]: Analyzing trace with hash -695778885, now seen corresponding path program 1 times [2023-11-06 21:57:23,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:23,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627396878] [2023-11-06 21:57:23,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:23,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:23,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:24,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:57:24,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:24,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 21:57:24,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:24,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-06 21:57:24,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:24,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-06 21:57:24,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:24,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:57:24,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:24,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-06 21:57:24,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:24,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:57:24,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:24,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-06 21:57:24,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:24,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:57:24,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:25,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 21:57:25,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:25,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-06 21:57:25,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:25,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:25,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:25,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 21:57:25,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:25,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 21:57:25,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:25,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 21:57:25,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:25,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-06 21:57:25,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:25,112 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-06 21:57:25,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:25,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627396878] [2023-11-06 21:57:25,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627396878] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:57:25,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080456462] [2023-11-06 21:57:25,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:25,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:57:25,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e574bfb-d786-4781-a559-09c01dde420e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:57:25,114 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e574bfb-d786-4781-a559-09c01dde420e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:57:25,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e574bfb-d786-4781-a559-09c01dde420e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 21:57:25,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:25,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 2748 conjuncts, 63 conjunts are in the unsatisfiable core [2023-11-06 21:57:25,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:57:26,201 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-06 21:57:26,201 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:57:26,613 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-06 21:57:26,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080456462] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:57:26,613 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:57:26,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 9] total 29 [2023-11-06 21:57:26,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095679786] [2023-11-06 21:57:26,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:57:26,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-06 21:57:26,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:26,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-06 21:57:26,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=739, Unknown=0, NotChecked=0, Total=812 [2023-11-06 21:57:26,617 INFO L87 Difference]: Start difference. First operand 9975 states and 15339 transitions. Second operand has 29 states, 29 states have (on average 6.896551724137931) internal successors, (200), 16 states have internal predecessors, (200), 3 states have call successors, (41), 9 states have call predecessors, (41), 8 states have return successors, (34), 9 states have call predecessors, (34), 3 states have call successors, (34) [2023-11-06 21:57:39,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:57:39,804 INFO L93 Difference]: Finished difference Result 26105 states and 42207 transitions. [2023-11-06 21:57:39,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-06 21:57:39,805 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 6.896551724137931) internal successors, (200), 16 states have internal predecessors, (200), 3 states have call successors, (41), 9 states have call predecessors, (41), 8 states have return successors, (34), 9 states have call predecessors, (34), 3 states have call successors, (34) Word has length 158 [2023-11-06 21:57:39,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:57:39,884 INFO L225 Difference]: With dead ends: 26105 [2023-11-06 21:57:39,884 INFO L226 Difference]: Without dead ends: 16137 [2023-11-06 21:57:39,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=224, Invalid=1668, Unknown=0, NotChecked=0, Total=1892 [2023-11-06 21:57:39,930 INFO L413 NwaCegarLoop]: 1394 mSDtfsCounter, 3454 mSDsluCounter, 25981 mSDsCounter, 0 mSdLazyCounter, 10984 mSolverCounterSat, 1921 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3639 SdHoareTripleChecker+Valid, 27375 SdHoareTripleChecker+Invalid, 12905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1921 IncrementalHoareTripleChecker+Valid, 10984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2023-11-06 21:57:39,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3639 Valid, 27375 Invalid, 12905 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1921 Valid, 10984 Invalid, 0 Unknown, 0 Unchecked, 10.9s Time] [2023-11-06 21:57:39,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16137 states. [2023-11-06 21:57:41,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16137 to 10039. [2023-11-06 21:57:41,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10039 states, 7449 states have (on average 1.4345549738219896) internal successors, (10686), 7615 states have internal predecessors, (10686), 2034 states have call successors, (2034), 368 states have call predecessors, (2034), 555 states have return successors, (2711), 2143 states have call predecessors, (2711), 2031 states have call successors, (2711) [2023-11-06 21:57:41,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10039 states to 10039 states and 15431 transitions. [2023-11-06 21:57:41,865 INFO L78 Accepts]: Start accepts. Automaton has 10039 states and 15431 transitions. Word has length 158 [2023-11-06 21:57:41,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:57:41,866 INFO L495 AbstractCegarLoop]: Abstraction has 10039 states and 15431 transitions. [2023-11-06 21:57:41,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 6.896551724137931) internal successors, (200), 16 states have internal predecessors, (200), 3 states have call successors, (41), 9 states have call predecessors, (41), 8 states have return successors, (34), 9 states have call predecessors, (34), 3 states have call successors, (34) [2023-11-06 21:57:41,866 INFO L276 IsEmpty]: Start isEmpty. Operand 10039 states and 15431 transitions. [2023-11-06 21:57:41,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-11-06 21:57:41,883 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:57:41,883 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:41,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e574bfb-d786-4781-a559-09c01dde420e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 21:57:42,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e574bfb-d786-4781-a559-09c01dde420e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-06 21:57:42,094 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:57:42,095 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:42,095 INFO L85 PathProgramCache]: Analyzing trace with hash -73803851, now seen corresponding path program 1 times [2023-11-06 21:57:42,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:42,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582860281] [2023-11-06 21:57:42,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:42,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:42,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:42,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:57:42,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:42,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 21:57:42,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:42,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-06 21:57:42,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:42,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-06 21:57:42,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:42,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:57:42,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:42,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:57:42,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:42,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-06 21:57:42,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:42,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:57:43,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:43,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:57:43,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:43,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-06 21:57:43,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:43,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:57:43,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:43,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 21:57:43,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:43,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-06 21:57:43,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:43,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:43,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:43,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 21:57:43,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:43,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 21:57:43,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:43,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 21:57:43,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:43,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-06 21:57:43,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:43,322 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-06 21:57:43,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:43,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582860281] [2023-11-06 21:57:43,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582860281] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:43,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:43,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-06 21:57:43,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68616641] [2023-11-06 21:57:43,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:43,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 21:57:43,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:43,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 21:57:43,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-06 21:57:43,329 INFO L87 Difference]: Start difference. First operand 10039 states and 15431 transitions. Second operand has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 4 states have internal predecessors, (115), 3 states have call successors, (18), 9 states have call predecessors, (18), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2023-11-06 21:57:49,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:57:49,449 INFO L93 Difference]: Finished difference Result 21632 states and 33459 transitions. [2023-11-06 21:57:49,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 21:57:49,471 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 4 states have internal predecessors, (115), 3 states have call successors, (18), 9 states have call predecessors, (18), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 170 [2023-11-06 21:57:49,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:57:49,523 INFO L225 Difference]: With dead ends: 21632 [2023-11-06 21:57:49,523 INFO L226 Difference]: Without dead ends: 11616 [2023-11-06 21:57:49,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2023-11-06 21:57:49,559 INFO L413 NwaCegarLoop]: 1231 mSDtfsCounter, 2593 mSDsluCounter, 6698 mSDsCounter, 0 mSdLazyCounter, 3421 mSolverCounterSat, 1572 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2669 SdHoareTripleChecker+Valid, 7929 SdHoareTripleChecker+Invalid, 4993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1572 IncrementalHoareTripleChecker+Valid, 3421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-11-06 21:57:49,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2669 Valid, 7929 Invalid, 4993 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1572 Valid, 3421 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-11-06 21:57:49,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11616 states. [2023-11-06 21:57:50,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11616 to 10079. [2023-11-06 21:57:50,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10079 states, 7481 states have (on average 1.4337655393663948) internal successors, (10726), 7639 states have internal predecessors, (10726), 2042 states have call successors, (2042), 368 states have call predecessors, (2042), 555 states have return successors, (2719), 2159 states have call predecessors, (2719), 2039 states have call successors, (2719) [2023-11-06 21:57:50,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10079 states to 10079 states and 15487 transitions. [2023-11-06 21:57:50,726 INFO L78 Accepts]: Start accepts. Automaton has 10079 states and 15487 transitions. Word has length 170 [2023-11-06 21:57:50,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:57:50,726 INFO L495 AbstractCegarLoop]: Abstraction has 10079 states and 15487 transitions. [2023-11-06 21:57:50,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 4 states have internal predecessors, (115), 3 states have call successors, (18), 9 states have call predecessors, (18), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2023-11-06 21:57:50,727 INFO L276 IsEmpty]: Start isEmpty. Operand 10079 states and 15487 transitions. [2023-11-06 21:57:50,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-06 21:57:50,742 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:57:50,743 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:50,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 21:57:50,743 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:57:50,744 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:50,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1395438056, now seen corresponding path program 1 times [2023-11-06 21:57:50,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:50,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467180915] [2023-11-06 21:57:50,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:50,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:50,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:51,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:57:51,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:51,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 21:57:51,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:51,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-06 21:57:51,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:51,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-06 21:57:51,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:51,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:57:51,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:51,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:57:51,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:51,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-06 21:57:51,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:51,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:57:51,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:51,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:57:51,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:51,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-06 21:57:51,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:51,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:57:51,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:51,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:57:51,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:51,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-06 21:57:51,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:51,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-06 21:57:51,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:51,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:51,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:51,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 21:57:51,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:51,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 21:57:51,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:51,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 21:57:51,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:51,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-06 21:57:51,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:51,563 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-06 21:57:51,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:51,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467180915] [2023-11-06 21:57:51,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467180915] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:51,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:51,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-06 21:57:51,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592058165] [2023-11-06 21:57:51,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:51,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 21:57:51,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:57:51,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 21:57:51,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-06 21:57:51,567 INFO L87 Difference]: Start difference. First operand 10079 states and 15487 transitions. Second operand has 11 states, 11 states have (on average 9.909090909090908) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (18), 9 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-06 21:57:57,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:57:57,201 INFO L93 Difference]: Finished difference Result 21674 states and 33493 transitions. [2023-11-06 21:57:57,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 21:57:57,201 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.909090909090908) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (18), 9 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 176 [2023-11-06 21:57:57,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:57:57,350 INFO L225 Difference]: With dead ends: 21674 [2023-11-06 21:57:57,351 INFO L226 Difference]: Without dead ends: 11614 [2023-11-06 21:57:57,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2023-11-06 21:57:57,375 INFO L413 NwaCegarLoop]: 1228 mSDtfsCounter, 3443 mSDsluCounter, 4850 mSDsCounter, 0 mSdLazyCounter, 2512 mSolverCounterSat, 2274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3519 SdHoareTripleChecker+Valid, 6078 SdHoareTripleChecker+Invalid, 4786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2274 IncrementalHoareTripleChecker+Valid, 2512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-11-06 21:57:57,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3519 Valid, 6078 Invalid, 4786 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2274 Valid, 2512 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-11-06 21:57:57,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11614 states. [2023-11-06 21:57:58,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11614 to 10080. [2023-11-06 21:57:58,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10080 states, 7482 states have (on average 1.43370756482224) internal successors, (10727), 7640 states have internal predecessors, (10727), 2042 states have call successors, (2042), 368 states have call predecessors, (2042), 555 states have return successors, (2719), 2159 states have call predecessors, (2719), 2039 states have call successors, (2719) [2023-11-06 21:57:58,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10080 states to 10080 states and 15488 transitions. [2023-11-06 21:57:58,589 INFO L78 Accepts]: Start accepts. Automaton has 10080 states and 15488 transitions. Word has length 176 [2023-11-06 21:57:58,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:57:58,590 INFO L495 AbstractCegarLoop]: Abstraction has 10080 states and 15488 transitions. [2023-11-06 21:57:58,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.909090909090908) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (18), 9 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-06 21:57:58,590 INFO L276 IsEmpty]: Start isEmpty. Operand 10080 states and 15488 transitions. [2023-11-06 21:57:58,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-11-06 21:57:58,602 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:57:58,602 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:58,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 21:57:58,602 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:57:58,603 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:58,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1203833406, now seen corresponding path program 1 times [2023-11-06 21:57:58,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:57:58,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437821775] [2023-11-06 21:57:58,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:58,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:57:58,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:59,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:57:59,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:59,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 21:57:59,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:59,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 21:57:59,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:59,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 21:57:59,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:59,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:57:59,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:59,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:57:59,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:59,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-06 21:57:59,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:59,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:57:59,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:59,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:57:59,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:59,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-06 21:57:59,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:59,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:57:59,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:59,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:57:59,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:59,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-06 21:57:59,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:59,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-06 21:57:59,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:59,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:57:59,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:59,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 21:57:59,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:59,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 21:57:59,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:59,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 21:57:59,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:59,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-06 21:57:59,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:59,583 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-06 21:57:59,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:57:59,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437821775] [2023-11-06 21:57:59,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437821775] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:57:59,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141492199] [2023-11-06 21:57:59,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:59,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:57:59,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e574bfb-d786-4781-a559-09c01dde420e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:57:59,588 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e574bfb-d786-4781-a559-09c01dde420e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:57:59,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e574bfb-d786-4781-a559-09c01dde420e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 21:58:00,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:00,496 INFO L262 TraceCheckSpWp]: Trace formula consists of 2841 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 21:58:00,503 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:58:00,559 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-06 21:58:00,560 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:58:00,679 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-06 21:58:00,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141492199] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 21:58:00,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-06 21:58:00,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12, 4] total 14 [2023-11-06 21:58:00,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889571493] [2023-11-06 21:58:00,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:00,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:58:00,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:00,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:58:00,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-11-06 21:58:00,683 INFO L87 Difference]: Start difference. First operand 10080 states and 15488 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-06 21:58:01,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:58:01,668 INFO L93 Difference]: Finished difference Result 20136 states and 30950 transitions. [2023-11-06 21:58:01,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:58:01,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 177 [2023-11-06 21:58:01,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:58:01,702 INFO L225 Difference]: With dead ends: 20136 [2023-11-06 21:58:01,702 INFO L226 Difference]: Without dead ends: 10080 [2023-11-06 21:58:01,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-11-06 21:58:01,728 INFO L413 NwaCegarLoop]: 1501 mSDtfsCounter, 2 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2997 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:58:01,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2997 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:58:01,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10080 states. [2023-11-06 21:58:02,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10080 to 10080. [2023-11-06 21:58:02,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10080 states, 7482 states have (on average 1.4326383319967924) internal successors, (10719), 7632 states have internal predecessors, (10719), 2042 states have call successors, (2042), 368 states have call predecessors, (2042), 555 states have return successors, (2719), 2159 states have call predecessors, (2719), 2039 states have call successors, (2719) [2023-11-06 21:58:02,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10080 states to 10080 states and 15480 transitions. [2023-11-06 21:58:02,795 INFO L78 Accepts]: Start accepts. Automaton has 10080 states and 15480 transitions. Word has length 177 [2023-11-06 21:58:02,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:58:02,795 INFO L495 AbstractCegarLoop]: Abstraction has 10080 states and 15480 transitions. [2023-11-06 21:58:02,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-06 21:58:02,796 INFO L276 IsEmpty]: Start isEmpty. Operand 10080 states and 15480 transitions. [2023-11-06 21:58:02,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-11-06 21:58:02,807 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:58:02,808 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:02,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e574bfb-d786-4781-a559-09c01dde420e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 21:58:03,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e574bfb-d786-4781-a559-09c01dde420e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:58:03,009 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:58:03,009 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:03,009 INFO L85 PathProgramCache]: Analyzing trace with hash 272140865, now seen corresponding path program 1 times [2023-11-06 21:58:03,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:03,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708540686] [2023-11-06 21:58:03,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:03,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:03,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:03,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:58:03,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:03,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 21:58:03,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:03,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 21:58:03,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:03,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 21:58:03,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:03,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:58:03,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:03,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:58:03,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:03,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-06 21:58:03,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:03,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:58:03,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:03,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:58:03,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:03,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-06 21:58:03,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:03,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-06 21:58:03,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:03,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:58:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:03,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:58:03,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:03,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-06 21:58:03,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:04,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-06 21:58:04,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:04,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:58:04,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:04,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 21:58:04,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:04,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 21:58:04,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:04,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 21:58:04,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:04,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-06 21:58:04,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:04,106 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-06 21:58:04,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:04,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708540686] [2023-11-06 21:58:04,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708540686] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:58:04,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341246248] [2023-11-06 21:58:04,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:04,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:58:04,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e574bfb-d786-4781-a559-09c01dde420e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:58:04,108 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e574bfb-d786-4781-a559-09c01dde420e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:58:04,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e574bfb-d786-4781-a559-09c01dde420e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 21:58:05,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:05,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 2929 conjuncts, 52 conjunts are in the unsatisfiable core [2023-11-06 21:58:05,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:58:05,889 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-06 21:58:05,890 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:58:05,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341246248] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:05,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:58:05,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [13] total 25 [2023-11-06 21:58:05,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678817942] [2023-11-06 21:58:05,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:05,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 21:58:05,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:05,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 21:58:05,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=542, Unknown=0, NotChecked=0, Total=600 [2023-11-06 21:58:05,893 INFO L87 Difference]: Start difference. First operand 10080 states and 15480 transitions. Second operand has 14 states, 13 states have (on average 9.461538461538462) internal successors, (123), 11 states have internal predecessors, (123), 4 states have call successors, (20), 2 states have call predecessors, (20), 5 states have return successors, (19), 6 states have call predecessors, (19), 4 states have call successors, (19) [2023-11-06 21:58:08,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:58:08,634 INFO L93 Difference]: Finished difference Result 22292 states and 34472 transitions. [2023-11-06 21:58:08,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-06 21:58:08,635 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 9.461538461538462) internal successors, (123), 11 states have internal predecessors, (123), 4 states have call successors, (20), 2 states have call predecessors, (20), 5 states have return successors, (19), 6 states have call predecessors, (19), 4 states have call successors, (19) Word has length 182 [2023-11-06 21:58:08,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:58:08,680 INFO L225 Difference]: With dead ends: 22292 [2023-11-06 21:58:08,680 INFO L226 Difference]: Without dead ends: 12236 [2023-11-06 21:58:08,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=135, Invalid=1425, Unknown=0, NotChecked=0, Total=1560 [2023-11-06 21:58:08,708 INFO L413 NwaCegarLoop]: 2761 mSDtfsCounter, 2456 mSDsluCounter, 32323 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2500 SdHoareTripleChecker+Valid, 35084 SdHoareTripleChecker+Invalid, 1038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-06 21:58:08,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2500 Valid, 35084 Invalid, 1038 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [141 Valid, 897 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-06 21:58:08,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12236 states. [2023-11-06 21:58:09,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12236 to 10027. [2023-11-06 21:58:09,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10027 states, 7441 states have (on average 1.4305872866550196) internal successors, (10645), 7591 states have internal predecessors, (10645), 2030 states have call successors, (2030), 368 states have call predecessors, (2030), 555 states have return successors, (2707), 2147 states have call predecessors, (2707), 2027 states have call successors, (2707) [2023-11-06 21:58:09,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10027 states to 10027 states and 15382 transitions. [2023-11-06 21:58:09,965 INFO L78 Accepts]: Start accepts. Automaton has 10027 states and 15382 transitions. Word has length 182 [2023-11-06 21:58:09,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:58:09,965 INFO L495 AbstractCegarLoop]: Abstraction has 10027 states and 15382 transitions. [2023-11-06 21:58:09,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 9.461538461538462) internal successors, (123), 11 states have internal predecessors, (123), 4 states have call successors, (20), 2 states have call predecessors, (20), 5 states have return successors, (19), 6 states have call predecessors, (19), 4 states have call successors, (19) [2023-11-06 21:58:09,966 INFO L276 IsEmpty]: Start isEmpty. Operand 10027 states and 15382 transitions. [2023-11-06 21:58:09,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-11-06 21:58:09,979 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:58:09,979 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:09,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e574bfb-d786-4781-a559-09c01dde420e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 21:58:10,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e574bfb-d786-4781-a559-09c01dde420e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:58:10,180 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:58:10,180 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:10,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1137207344, now seen corresponding path program 1 times [2023-11-06 21:58:10,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:10,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182274270] [2023-11-06 21:58:10,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:10,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:10,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:10,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:58:10,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:10,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 21:58:10,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:10,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 21:58:10,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:10,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 21:58:10,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:10,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:58:10,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:10,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:58:10,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:10,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-06 21:58:10,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:10,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:58:10,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:10,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:58:10,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:10,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-06 21:58:10,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:10,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-06 21:58:10,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:10,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:58:10,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:10,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 21:58:10,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:10,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-06 21:58:10,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:10,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:58:10,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:10,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:58:10,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:10,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-06 21:58:10,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:10,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-11-06 21:58:10,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:10,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:58:10,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:10,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:58:10,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:10,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-06 21:58:10,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:10,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-06 21:58:10,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:10,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2023-11-06 21:58:10,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:11,007 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2023-11-06 21:58:11,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:11,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182274270] [2023-11-06 21:58:11,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182274270] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:58:11,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579678800] [2023-11-06 21:58:11,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:11,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:58:11,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e574bfb-d786-4781-a559-09c01dde420e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:58:11,010 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e574bfb-d786-4781-a559-09c01dde420e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:58:11,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e574bfb-d786-4781-a559-09c01dde420e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 21:58:11,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:11,941 INFO L262 TraceCheckSpWp]: Trace formula consists of 3184 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 21:58:11,949 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:58:12,218 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-11-06 21:58:12,218 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:58:12,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579678800] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:12,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:58:12,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 11 [2023-11-06 21:58:12,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565751749] [2023-11-06 21:58:12,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:12,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:58:12,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:12,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:58:12,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-06 21:58:12,221 INFO L87 Difference]: Start difference. First operand 10027 states and 15382 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 3 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-06 21:58:15,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:58:15,997 INFO L93 Difference]: Finished difference Result 30038 states and 46099 transitions. [2023-11-06 21:58:15,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:58:15,998 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 3 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 208 [2023-11-06 21:58:15,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:58:16,098 INFO L225 Difference]: With dead ends: 30038 [2023-11-06 21:58:16,098 INFO L226 Difference]: Without dead ends: 30021 [2023-11-06 21:58:16,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-06 21:58:16,107 INFO L413 NwaCegarLoop]: 2971 mSDtfsCounter, 2857 mSDsluCounter, 2546 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2857 SdHoareTripleChecker+Valid, 5517 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-06 21:58:16,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2857 Valid, 5517 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-06 21:58:16,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30021 states. [2023-11-06 21:58:19,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30021 to 29983. [2023-11-06 21:58:19,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29983 states, 22245 states have (on average 1.4315576534052596) internal successors, (31845), 22707 states have internal predecessors, (31845), 6078 states have call successors, (6078), 1096 states have call predecessors, (6078), 1659 states have return successors, (8115), 6419 states have call predecessors, (8115), 6075 states have call successors, (8115) [2023-11-06 21:58:19,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29983 states to 29983 states and 46038 transitions. [2023-11-06 21:58:19,416 INFO L78 Accepts]: Start accepts. Automaton has 29983 states and 46038 transitions. Word has length 208 [2023-11-06 21:58:19,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:58:19,417 INFO L495 AbstractCegarLoop]: Abstraction has 29983 states and 46038 transitions. [2023-11-06 21:58:19,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 3 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-06 21:58:19,417 INFO L276 IsEmpty]: Start isEmpty. Operand 29983 states and 46038 transitions. [2023-11-06 21:58:19,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-11-06 21:58:19,430 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:58:19,430 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:19,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e574bfb-d786-4781-a559-09c01dde420e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 21:58:19,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e574bfb-d786-4781-a559-09c01dde420e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-06 21:58:19,631 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:58:19,631 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:19,631 INFO L85 PathProgramCache]: Analyzing trace with hash -142656334, now seen corresponding path program 1 times [2023-11-06 21:58:19,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:19,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043888688] [2023-11-06 21:58:19,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:19,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:19,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:19,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:58:19,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:20,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 21:58:20,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:20,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 21:58:20,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:20,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 21:58:20,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:20,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:58:20,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:20,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:58:20,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:20,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-06 21:58:20,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:20,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:58:20,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:20,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:58:20,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:20,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-06 21:58:20,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:20,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-06 21:58:20,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:20,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:58:20,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:20,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 21:58:20,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:20,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-06 21:58:20,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:20,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:58:20,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:20,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:58:20,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:20,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-06 21:58:20,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:20,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-11-06 21:58:20,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:20,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:58:20,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:20,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:58:20,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:20,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-06 21:58:20,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:20,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-11-06 21:58:20,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:20,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2023-11-06 21:58:20,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:20,300 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2023-11-06 21:58:20,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:20,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043888688] [2023-11-06 21:58:20,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043888688] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:20,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:20,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 21:58:20,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210965050] [2023-11-06 21:58:20,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:20,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 21:58:20,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:20,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 21:58:20,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-06 21:58:20,305 INFO L87 Difference]: Start difference. First operand 29983 states and 46038 transitions. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (18), 8 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-06 21:58:41,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:58:41,294 INFO L93 Difference]: Finished difference Result 108094 states and 168817 transitions. [2023-11-06 21:58:41,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-06 21:58:41,295 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (18), 8 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 208 [2023-11-06 21:58:41,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:58:41,709 INFO L225 Difference]: With dead ends: 108094 [2023-11-06 21:58:41,709 INFO L226 Difference]: Without dead ends: 78135 [2023-11-06 21:58:41,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2023-11-06 21:58:41,803 INFO L413 NwaCegarLoop]: 1318 mSDtfsCounter, 6942 mSDsluCounter, 5696 mSDsCounter, 0 mSdLazyCounter, 3141 mSolverCounterSat, 3695 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7079 SdHoareTripleChecker+Valid, 7014 SdHoareTripleChecker+Invalid, 6836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3695 IncrementalHoareTripleChecker+Valid, 3141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2023-11-06 21:58:41,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7079 Valid, 7014 Invalid, 6836 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3695 Valid, 3141 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2023-11-06 21:58:41,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78135 states. [2023-11-06 21:58:48,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78135 to 28683. [2023-11-06 21:58:48,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28683 states, 21281 states have (on average 1.4375734223015835) internal successors, (30593), 21707 states have internal predecessors, (30593), 5898 states have call successors, (5898), 1096 states have call predecessors, (5898), 1503 states have return successors, (7335), 6143 states have call predecessors, (7335), 5895 states have call successors, (7335) [2023-11-06 21:58:48,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28683 states to 28683 states and 43826 transitions. [2023-11-06 21:58:48,823 INFO L78 Accepts]: Start accepts. Automaton has 28683 states and 43826 transitions. Word has length 208 [2023-11-06 21:58:48,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:58:48,824 INFO L495 AbstractCegarLoop]: Abstraction has 28683 states and 43826 transitions. [2023-11-06 21:58:48,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (18), 8 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-06 21:58:48,825 INFO L276 IsEmpty]: Start isEmpty. Operand 28683 states and 43826 transitions. [2023-11-06 21:58:48,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-11-06 21:58:48,841 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:58:48,841 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:48,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-06 21:58:48,842 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:58:48,842 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:48,842 INFO L85 PathProgramCache]: Analyzing trace with hash -741603351, now seen corresponding path program 1 times [2023-11-06 21:58:48,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:48,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887614607] [2023-11-06 21:58:48,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:48,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:48,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:50,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:58:50,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:50,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 21:58:50,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:50,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 21:58:50,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:50,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 21:58:50,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:50,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:58:50,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:50,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:58:50,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:50,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-06 21:58:50,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:50,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:58:50,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:50,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:58:50,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:50,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-06 21:58:50,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:50,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-06 21:58:50,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:50,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:58:50,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:50,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 21:58:50,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:50,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-06 21:58:50,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:50,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:58:50,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:50,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:58:50,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:50,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-06 21:58:50,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:50,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-11-06 21:58:50,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:50,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:58:50,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:50,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 21:58:50,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:50,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 21:58:50,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:50,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 21:58:50,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:50,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-06 21:58:50,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:50,857 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-11-06 21:58:50,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:50,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887614607] [2023-11-06 21:58:50,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887614607] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:58:50,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546156100] [2023-11-06 21:58:50,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:50,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:58:50,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e574bfb-d786-4781-a559-09c01dde420e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:58:50,859 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e574bfb-d786-4781-a559-09c01dde420e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:58:50,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e574bfb-d786-4781-a559-09c01dde420e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 21:58:51,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:51,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 3031 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 21:58:51,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:58:52,000 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-06 21:58:52,001 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:58:52,230 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-11-06 21:58:52,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546156100] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:58:52,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:58:52,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 21 [2023-11-06 21:58:52,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764836080] [2023-11-06 21:58:52,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:58:52,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-06 21:58:52,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:52,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-06 21:58:52,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2023-11-06 21:58:52,235 INFO L87 Difference]: Start difference. First operand 28683 states and 43826 transitions. Second operand has 21 states, 21 states have (on average 11.380952380952381) internal successors, (239), 13 states have internal predecessors, (239), 4 states have call successors, (54), 10 states have call predecessors, (54), 5 states have return successors, (46), 5 states have call predecessors, (46), 4 states have call successors, (46) [2023-11-06 21:59:13,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:59:13,919 INFO L93 Difference]: Finished difference Result 66472 states and 102844 transitions. [2023-11-06 21:59:13,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-06 21:59:13,920 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 11.380952380952381) internal successors, (239), 13 states have internal predecessors, (239), 4 states have call successors, (54), 10 states have call predecessors, (54), 5 states have return successors, (46), 5 states have call predecessors, (46), 4 states have call successors, (46) Word has length 202 [2023-11-06 21:59:13,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:59:14,382 INFO L225 Difference]: With dead ends: 66472 [2023-11-06 21:59:14,383 INFO L226 Difference]: Without dead ends: 37807 [2023-11-06 21:59:14,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 442 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=309, Invalid=1497, Unknown=0, NotChecked=0, Total=1806 [2023-11-06 21:59:14,455 INFO L413 NwaCegarLoop]: 1515 mSDtfsCounter, 7584 mSDsluCounter, 17635 mSDsCounter, 0 mSdLazyCounter, 8435 mSolverCounterSat, 4057 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7722 SdHoareTripleChecker+Valid, 19150 SdHoareTripleChecker+Invalid, 12492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 4057 IncrementalHoareTripleChecker+Valid, 8435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2023-11-06 21:59:14,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7722 Valid, 19150 Invalid, 12492 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [4057 Valid, 8435 Invalid, 0 Unknown, 0 Unchecked, 12.7s Time] [2023-11-06 21:59:14,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37807 states. [2023-11-06 21:59:19,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37807 to 27650. [2023-11-06 21:59:19,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27650 states, 20542 states have (on average 1.4360821731087527) internal successors, (29500), 20944 states have internal predecessors, (29500), 5622 states have call successors, (5622), 1084 states have call predecessors, (5622), 1485 states have return successors, (6987), 5885 states have call predecessors, (6987), 5619 states have call successors, (6987) [2023-11-06 21:59:19,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27650 states to 27650 states and 42109 transitions. [2023-11-06 21:59:19,785 INFO L78 Accepts]: Start accepts. Automaton has 27650 states and 42109 transitions. Word has length 202 [2023-11-06 21:59:19,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:59:19,785 INFO L495 AbstractCegarLoop]: Abstraction has 27650 states and 42109 transitions. [2023-11-06 21:59:19,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 11.380952380952381) internal successors, (239), 13 states have internal predecessors, (239), 4 states have call successors, (54), 10 states have call predecessors, (54), 5 states have return successors, (46), 5 states have call predecessors, (46), 4 states have call successors, (46) [2023-11-06 21:59:19,785 INFO L276 IsEmpty]: Start isEmpty. Operand 27650 states and 42109 transitions. [2023-11-06 21:59:19,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-11-06 21:59:19,794 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:59:19,795 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:19,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e574bfb-d786-4781-a559-09c01dde420e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 21:59:19,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e574bfb-d786-4781-a559-09c01dde420e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:19,995 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:59:19,996 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:19,996 INFO L85 PathProgramCache]: Analyzing trace with hash 718220905, now seen corresponding path program 2 times [2023-11-06 21:59:19,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:19,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771026821] [2023-11-06 21:59:19,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:19,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:20,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:22,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:59:22,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:22,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 21:59:22,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:22,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-06 21:59:22,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:22,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-06 21:59:22,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:22,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:59:22,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:22,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:59:22,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:22,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-06 21:59:22,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:22,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:59:22,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:22,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:59:22,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:23,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-06 21:59:23,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:23,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-06 21:59:23,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:23,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:59:23,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:23,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 21:59:23,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:23,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-06 21:59:23,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:23,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-11-06 21:59:23,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:23,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 21:59:23,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:23,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 21:59:23,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:23,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-11-06 21:59:23,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:23,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-06 21:59:23,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:23,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-06 21:59:23,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:23,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 21:59:23,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:23,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 21:59:23,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:23,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-06 21:59:23,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:23,854 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 17 proven. 9 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-06 21:59:23,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:23,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771026821] [2023-11-06 21:59:23,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771026821] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:59:23,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438877048] [2023-11-06 21:59:23,855 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 21:59:23,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:23,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e574bfb-d786-4781-a559-09c01dde420e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:59:23,857 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e574bfb-d786-4781-a559-09c01dde420e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:59:23,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e574bfb-d786-4781-a559-09c01dde420e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process