/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver 'mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/aws-c-common/aws_linked_list_next_harness.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-05 08:17:56,734 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-05 08:17:56,787 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-05 08:17:56,792 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-05 08:17:56,793 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-05 08:17:56,812 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-05 08:17:56,812 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-05 08:17:56,812 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-05 08:17:56,813 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-05 08:17:56,813 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-05 08:17:56,814 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-05 08:17:56,815 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-05 08:17:56,815 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-05 08:17:56,818 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-05 08:17:56,818 INFO L153 SettingsManager]: * Use SBE=true [2024-11-05 08:17:56,818 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-05 08:17:56,818 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-05 08:17:56,818 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-05 08:17:56,819 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-05 08:17:56,819 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-05 08:17:56,819 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-05 08:17:56,819 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-05 08:17:56,819 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-05 08:17:56,819 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-05 08:17:56,820 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-05 08:17:56,820 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-05 08:17:56,820 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-05 08:17:56,820 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-05 08:17:56,820 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-05 08:17:56,820 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-05 08:17:56,821 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-05 08:17:56,821 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-05 08:17:56,821 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-05 08:17:56,821 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-05 08:17:56,821 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-05 08:17:56,821 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-05 08:17:56,822 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-05 08:17:56,822 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-05 08:17:56,822 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-05 08:17:56,822 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-05 08:17:56,822 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-05 08:17:56,823 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-05 08:17:56,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-05 08:17:56,993 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-05 08:17:56,995 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-05 08:17:56,995 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-05 08:17:56,996 INFO L274 PluginConnector]: CDTParser initialized [2024-11-05 08:17:56,996 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_linked_list_next_harness.i [2024-11-05 08:17:58,113 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-05 08:17:58,457 INFO L384 CDTParser]: Found 1 translation units. [2024-11-05 08:17:58,457 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_next_harness.i [2024-11-05 08:17:58,482 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ffbc3943/78becda6e1bb41698561b54749cb5f63/FLAG2e08bd970 [2024-11-05 08:17:58,713 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ffbc3943/78becda6e1bb41698561b54749cb5f63 [2024-11-05 08:17:58,715 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-05 08:17:58,716 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-05 08:17:58,717 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-05 08:17:58,717 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-05 08:17:58,721 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-05 08:17:58,721 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 08:17:58" (1/1) ... [2024-11-05 08:17:58,722 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f41ec85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:17:58, skipping insertion in model container [2024-11-05 08:17:58,722 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 08:17:58" (1/1) ... [2024-11-05 08:17:58,786 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-05 08:17:58,985 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_next_harness.i[4494,4507] [2024-11-05 08:17:58,990 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_next_harness.i[4554,4567] [2024-11-05 08:17:59,327 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 08:17:59,393 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 08:17:59,393 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 08:17:59,394 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 08:17:59,401 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 08:17:59,402 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 08:17:59,402 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 08:17:59,403 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 08:17:59,403 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 08:17:59,403 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 08:17:59,404 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 08:17:59,410 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 08:17:59,410 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 08:17:59,413 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 08:17:59,413 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 08:17:59,425 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 08:17:59,426 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 08:17:59,426 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 08:17:59,426 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 08:17:59,427 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 08:17:59,427 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 08:17:59,428 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 08:17:59,428 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 08:17:59,431 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 08:17:59,431 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 08:17:59,431 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 08:17:59,432 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 08:17:59,432 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 08:17:59,432 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 08:17:59,691 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 08:17:59,692 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 08:17:59,692 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 08:17:59,692 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 08:17:59,771 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 08:17:59,779 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 08:17:59,804 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-05 08:17:59,823 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-05 08:17:59,828 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_next_harness.i[4494,4507] [2024-11-05 08:17:59,828 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_next_harness.i[4554,4567] [2024-11-05 08:17:59,849 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 08:17:59,863 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 08:17:59,864 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 08:17:59,864 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 08:17:59,867 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 08:17:59,868 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 08:17:59,871 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 08:17:59,871 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 08:17:59,872 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 08:17:59,872 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 08:17:59,872 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 08:17:59,874 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 08:17:59,874 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 08:17:59,875 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 08:17:59,875 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 08:17:59,880 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 08:17:59,880 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 08:17:59,880 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 08:17:59,880 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 08:17:59,881 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 08:17:59,883 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 08:17:59,883 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 08:17:59,884 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 08:17:59,885 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 08:17:59,885 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 08:17:59,885 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 08:17:59,885 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 08:17:59,886 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 08:17:59,886 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 08:17:59,923 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 08:17:59,924 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 08:17:59,924 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 08:17:59,924 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 08:17:59,952 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-05 08:17:59,958 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 08:17:59,964 INFO L200 MainTranslator]: Completed pre-run [2024-11-05 08:17:59,973 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_next_harness.i[4494,4507] [2024-11-05 08:17:59,974 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_next_harness.i[4554,4567] [2024-11-05 08:18:00,006 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 08:18:00,007 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 08:18:00,007 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 08:18:00,008 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 08:18:00,008 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 08:18:00,013 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 08:18:00,013 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 08:18:00,014 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 08:18:00,014 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 08:18:00,015 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 08:18:00,015 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 08:18:00,016 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 08:18:00,016 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-05 08:18:00,071 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-05 08:18:00,199 WARN L710 CHandler]: The following functions are not defined or handled internally: aws_array_list_ensure_capacity [2024-11-05 08:18:00,209 INFO L204 MainTranslator]: Completed translation [2024-11-05 08:18:00,209 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:18:00 WrapperNode [2024-11-05 08:18:00,209 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-05 08:18:00,211 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-05 08:18:00,211 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-05 08:18:00,211 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-05 08:18:00,216 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:18:00" (1/1) ... [2024-11-05 08:18:00,271 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:18:00" (1/1) ... [2024-11-05 08:18:00,298 INFO L138 Inliner]: procedures = 687, calls = 1039, calls flagged for inlining = 50, calls inlined = 4, statements flattened = 57 [2024-11-05 08:18:00,298 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-05 08:18:00,299 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-05 08:18:00,299 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-05 08:18:00,299 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-05 08:18:00,307 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:18:00" (1/1) ... [2024-11-05 08:18:00,307 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:18:00" (1/1) ... [2024-11-05 08:18:00,309 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:18:00" (1/1) ... [2024-11-05 08:18:00,326 INFO L175 MemorySlicer]: Split 17 memory accesses to 4 slices as follows [2, 5, 4, 6]. 35 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0, 0]. The 2 writes are split as follows [0, 0, 1, 1]. [2024-11-05 08:18:00,327 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:18:00" (1/1) ... [2024-11-05 08:18:00,327 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:18:00" (1/1) ... [2024-11-05 08:18:00,342 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:18:00" (1/1) ... [2024-11-05 08:18:00,347 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:18:00" (1/1) ... [2024-11-05 08:18:00,354 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:18:00" (1/1) ... [2024-11-05 08:18:00,355 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:18:00" (1/1) ... [2024-11-05 08:18:00,365 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-05 08:18:00,366 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-05 08:18:00,366 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-05 08:18:00,366 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-05 08:18:00,366 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:18:00" (1/1) ... [2024-11-05 08:18:00,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-05 08:18:00,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-05 08:18:00,393 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-05 08:18:00,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-05 08:18:00,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-05 08:18:00,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-05 08:18:00,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-05 08:18:00,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-05 08:18:00,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-11-05 08:18:00,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-05 08:18:00,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-05 08:18:00,413 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2024-11-05 08:18:00,413 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2024-11-05 08:18:00,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-05 08:18:00,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-05 08:18:00,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-05 08:18:00,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-05 08:18:00,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-05 08:18:00,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-05 08:18:00,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-05 08:18:00,414 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-05 08:18:00,414 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-05 08:18:00,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-05 08:18:00,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-05 08:18:00,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-05 08:18:00,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-05 08:18:00,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-05 08:18:00,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-05 08:18:00,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-05 08:18:00,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-05 08:18:00,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-05 08:18:00,415 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2024-11-05 08:18:00,415 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2024-11-05 08:18:00,617 INFO L238 CfgBuilder]: Building ICFG [2024-11-05 08:18:00,619 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-05 08:18:00,780 INFO L? ?]: Removed 31 outVars from TransFormulas that were not future-live. [2024-11-05 08:18:00,781 INFO L287 CfgBuilder]: Performing block encoding [2024-11-05 08:18:00,791 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-05 08:18:00,791 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-05 08:18:00,791 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 08:18:00 BoogieIcfgContainer [2024-11-05 08:18:00,791 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-05 08:18:00,793 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-05 08:18:00,793 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-05 08:18:00,795 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-05 08:18:00,795 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 08:17:58" (1/3) ... [2024-11-05 08:18:00,796 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d582c2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 08:18:00, skipping insertion in model container [2024-11-05 08:18:00,796 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 08:18:00" (2/3) ... [2024-11-05 08:18:00,796 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d582c2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 08:18:00, skipping insertion in model container [2024-11-05 08:18:00,797 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 08:18:00" (3/3) ... [2024-11-05 08:18:00,798 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_next_harness.i [2024-11-05 08:18:00,809 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-05 08:18:00,809 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-05 08:18:00,848 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-05 08:18:00,851 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@30ed8579, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-05 08:18:00,852 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-05 08:18:00,854 INFO L276 IsEmpty]: Start isEmpty. Operand has 50 states, 32 states have (on average 1.21875) internal successors, (39), 33 states have internal predecessors, (39), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-05 08:18:00,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-05 08:18:00,859 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 08:18:00,859 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 08:18:00,860 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 08:18:00,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 08:18:00,863 INFO L85 PathProgramCache]: Analyzing trace with hash 401849526, now seen corresponding path program 1 times [2024-11-05 08:18:00,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 08:18:00,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702794659] [2024-11-05 08:18:00,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 08:18:00,870 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-05 08:18:00,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-05 08:18:00,873 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-05 08:18:00,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-05 08:18:01,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 08:18:01,033 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-05 08:18:01,037 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 08:18:01,056 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-05 08:18:01,057 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 08:18:01,082 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-05 08:18:01,082 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 08:18:01,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1702794659] [2024-11-05 08:18:01,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1702794659] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 08:18:01,083 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 08:18:01,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-05 08:18:01,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583927302] [2024-11-05 08:18:01,086 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 08:18:01,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-05 08:18:01,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 08:18:01,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-05 08:18:01,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-05 08:18:01,107 INFO L87 Difference]: Start difference. First operand has 50 states, 32 states have (on average 1.21875) internal successors, (39), 33 states have internal predecessors, (39), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-05 08:18:01,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 08:18:01,148 INFO L93 Difference]: Finished difference Result 94 states and 124 transitions. [2024-11-05 08:18:01,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-05 08:18:01,151 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2024-11-05 08:18:01,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 08:18:01,157 INFO L225 Difference]: With dead ends: 94 [2024-11-05 08:18:01,158 INFO L226 Difference]: Without dead ends: 45 [2024-11-05 08:18:01,160 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-05 08:18:01,161 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-05 08:18:01,162 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 08:18:01,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-05 08:18:01,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-11-05 08:18:01,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 29 states have internal predecessors, (33), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-05 08:18:01,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2024-11-05 08:18:01,188 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 28 [2024-11-05 08:18:01,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 08:18:01,189 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2024-11-05 08:18:01,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-05 08:18:01,189 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2024-11-05 08:18:01,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-05 08:18:01,192 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 08:18:01,192 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 08:18:01,198 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-11-05 08:18:01,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-05 08:18:01,393 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 08:18:01,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 08:18:01,394 INFO L85 PathProgramCache]: Analyzing trace with hash -619218828, now seen corresponding path program 1 times [2024-11-05 08:18:01,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 08:18:01,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [294073583] [2024-11-05 08:18:01,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 08:18:01,394 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-05 08:18:01,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-05 08:18:01,395 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-05 08:18:01,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-05 08:18:01,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 08:18:01,521 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-05 08:18:01,530 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 08:18:01,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-05 08:18:01,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-05 08:18:01,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-05 08:18:01,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-05 08:18:02,460 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-05 08:18:02,460 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 08:18:02,987 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-05 08:18:02,987 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 08:18:02,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [294073583] [2024-11-05 08:18:02,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [294073583] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 08:18:02,987 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 08:18:02,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 9] imperfect sequences [] total 17 [2024-11-05 08:18:02,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173935206] [2024-11-05 08:18:02,988 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 08:18:02,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-05 08:18:02,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 08:18:02,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-05 08:18:02,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2024-11-05 08:18:02,990 INFO L87 Difference]: Start difference. First operand 45 states and 56 transitions. Second operand has 17 states, 15 states have (on average 2.466666666666667) internal successors, (37), 13 states have internal predecessors, (37), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-05 08:18:04,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 08:18:04,082 INFO L93 Difference]: Finished difference Result 56 states and 69 transitions. [2024-11-05 08:18:04,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-05 08:18:04,083 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.466666666666667) internal successors, (37), 13 states have internal predecessors, (37), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 28 [2024-11-05 08:18:04,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 08:18:04,084 INFO L225 Difference]: With dead ends: 56 [2024-11-05 08:18:04,084 INFO L226 Difference]: Without dead ends: 54 [2024-11-05 08:18:04,085 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2024-11-05 08:18:04,086 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 47 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-05 08:18:04,086 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 382 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-05 08:18:04,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-05 08:18:04,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2024-11-05 08:18:04,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 35 states have internal predecessors, (38), 13 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2024-11-05 08:18:04,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 66 transitions. [2024-11-05 08:18:04,095 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 66 transitions. Word has length 28 [2024-11-05 08:18:04,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 08:18:04,095 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 66 transitions. [2024-11-05 08:18:04,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.466666666666667) internal successors, (37), 13 states have internal predecessors, (37), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-05 08:18:04,095 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 66 transitions. [2024-11-05 08:18:04,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-05 08:18:04,096 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 08:18:04,096 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 08:18:04,101 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-11-05 08:18:04,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-05 08:18:04,300 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 08:18:04,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 08:18:04,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1428565454, now seen corresponding path program 1 times [2024-11-05 08:18:04,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 08:18:04,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [937004109] [2024-11-05 08:18:04,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 08:18:04,302 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-05 08:18:04,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-05 08:18:04,303 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-05 08:18:04,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-05 08:18:04,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 08:18:04,404 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-05 08:18:04,406 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 08:18:04,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-05 08:18:04,624 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-05 08:18:04,624 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 08:18:04,772 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-05 08:18:04,773 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 08:18:04,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [937004109] [2024-11-05 08:18:04,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [937004109] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 08:18:04,773 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 08:18:04,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 12 [2024-11-05 08:18:04,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513030443] [2024-11-05 08:18:04,773 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 08:18:04,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-05 08:18:04,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 08:18:04,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-05 08:18:04,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-11-05 08:18:04,774 INFO L87 Difference]: Start difference. First operand 53 states and 66 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 2 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-05 08:18:05,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 08:18:05,577 INFO L93 Difference]: Finished difference Result 108 states and 135 transitions. [2024-11-05 08:18:05,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-05 08:18:05,577 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 2 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 28 [2024-11-05 08:18:05,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 08:18:05,578 INFO L225 Difference]: With dead ends: 108 [2024-11-05 08:18:05,578 INFO L226 Difference]: Without dead ends: 58 [2024-11-05 08:18:05,579 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2024-11-05 08:18:05,581 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 40 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-05 08:18:05,581 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 216 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-05 08:18:05,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-05 08:18:05,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-11-05 08:18:05,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 37 states have (on average 1.162162162162162) internal successors, (43), 40 states have internal predecessors, (43), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (16), 12 states have call predecessors, (16), 12 states have call successors, (16) [2024-11-05 08:18:05,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 72 transitions. [2024-11-05 08:18:05,594 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 72 transitions. Word has length 28 [2024-11-05 08:18:05,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 08:18:05,594 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 72 transitions. [2024-11-05 08:18:05,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 2 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-05 08:18:05,594 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 72 transitions. [2024-11-05 08:18:05,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-05 08:18:05,595 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 08:18:05,595 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 08:18:05,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2024-11-05 08:18:05,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-05 08:18:05,799 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 08:18:05,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 08:18:05,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1821592464, now seen corresponding path program 1 times [2024-11-05 08:18:05,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 08:18:05,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [513246423] [2024-11-05 08:18:05,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 08:18:05,799 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-05 08:18:05,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-05 08:18:05,802 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-05 08:18:05,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-11-05 08:18:05,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 08:18:05,888 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-05 08:18:05,889 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 08:18:05,948 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-05 08:18:05,948 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 08:18:06,010 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-05 08:18:06,010 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 08:18:06,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [513246423] [2024-11-05 08:18:06,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [513246423] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 08:18:06,010 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 08:18:06,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2024-11-05 08:18:06,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763846830] [2024-11-05 08:18:06,011 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 08:18:06,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-05 08:18:06,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 08:18:06,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-05 08:18:06,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-05 08:18:06,012 INFO L87 Difference]: Start difference. First operand 58 states and 72 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-05 08:18:06,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 08:18:06,054 INFO L93 Difference]: Finished difference Result 115 states and 142 transitions. [2024-11-05 08:18:06,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-05 08:18:06,054 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2024-11-05 08:18:06,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 08:18:06,055 INFO L225 Difference]: With dead ends: 115 [2024-11-05 08:18:06,055 INFO L226 Difference]: Without dead ends: 60 [2024-11-05 08:18:06,056 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-05 08:18:06,056 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 3 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-05 08:18:06,057 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 151 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 08:18:06,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-05 08:18:06,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2024-11-05 08:18:06,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 37 states have internal predecessors, (41), 12 states have call successors, (12), 5 states have call predecessors, (12), 6 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2024-11-05 08:18:06,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 65 transitions. [2024-11-05 08:18:06,068 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 65 transitions. Word has length 28 [2024-11-05 08:18:06,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 08:18:06,068 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 65 transitions. [2024-11-05 08:18:06,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-05 08:18:06,068 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 65 transitions. [2024-11-05 08:18:06,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-05 08:18:06,069 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 08:18:06,069 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-05 08:18:06,075 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-11-05 08:18:06,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-05 08:18:06,270 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 08:18:06,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 08:18:06,270 INFO L85 PathProgramCache]: Analyzing trace with hash -239457674, now seen corresponding path program 1 times [2024-11-05 08:18:06,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 08:18:06,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [592598516] [2024-11-05 08:18:06,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 08:18:06,271 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-05 08:18:06,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-05 08:18:06,274 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-05 08:18:06,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-11-05 08:18:06,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 08:18:06,390 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-05 08:18:06,394 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 08:18:06,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-05 08:18:06,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-05 08:18:06,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-05 08:18:06,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-05 08:18:07,392 INFO L349 Elim1Store]: treesize reduction 21, result has 43.2 percent of original size [2024-11-05 08:18:07,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 157 treesize of output 106 [2024-11-05 08:18:07,458 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-05 08:18:07,458 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 08:18:07,967 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-05 08:18:07,968 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 08:18:07,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [592598516] [2024-11-05 08:18:07,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [592598516] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 08:18:07,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 08:18:07,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 20 [2024-11-05 08:18:07,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525039715] [2024-11-05 08:18:07,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 08:18:07,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-05 08:18:07,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 08:18:07,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-05 08:18:07,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2024-11-05 08:18:07,969 INFO L87 Difference]: Start difference. First operand 54 states and 65 transitions. Second operand has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-05 08:18:08,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 08:18:08,520 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2024-11-05 08:18:08,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-05 08:18:08,520 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2024-11-05 08:18:08,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 08:18:08,521 INFO L225 Difference]: With dead ends: 65 [2024-11-05 08:18:08,521 INFO L226 Difference]: Without dead ends: 63 [2024-11-05 08:18:08,522 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 56 SyntacticMatches, 8 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2024-11-05 08:18:08,522 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 11 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-05 08:18:08,522 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 343 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-05 08:18:08,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-05 08:18:08,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2024-11-05 08:18:08,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 40 states have (on average 1.15) internal successors, (46), 43 states have internal predecessors, (46), 13 states have call successors, (13), 6 states have call predecessors, (13), 8 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2024-11-05 08:18:08,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 74 transitions. [2024-11-05 08:18:08,533 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 74 transitions. Word has length 42 [2024-11-05 08:18:08,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 08:18:08,533 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 74 transitions. [2024-11-05 08:18:08,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-05 08:18:08,533 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 74 transitions. [2024-11-05 08:18:08,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-05 08:18:08,534 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 08:18:08,534 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-05 08:18:08,541 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-11-05 08:18:08,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-05 08:18:08,735 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 08:18:08,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 08:18:08,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1048804300, now seen corresponding path program 1 times [2024-11-05 08:18:08,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 08:18:08,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1361468915] [2024-11-05 08:18:08,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 08:18:08,736 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-05 08:18:08,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-05 08:18:08,737 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-05 08:18:08,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-11-05 08:18:08,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 08:18:08,837 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-05 08:18:08,843 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 08:18:08,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-05 08:18:08,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-05 08:18:08,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-05 08:18:09,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-05 08:18:09,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2024-11-05 08:18:09,335 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-05 08:18:09,335 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 08:18:09,625 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-05 08:18:09,625 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 08:18:09,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1361468915] [2024-11-05 08:18:09,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1361468915] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 08:18:09,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 08:18:09,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2024-11-05 08:18:09,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421835341] [2024-11-05 08:18:09,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 08:18:09,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-05 08:18:09,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 08:18:09,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-05 08:18:09,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-11-05 08:18:09,627 INFO L87 Difference]: Start difference. First operand 62 states and 74 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-05 08:18:09,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 08:18:09,954 INFO L93 Difference]: Finished difference Result 107 states and 129 transitions. [2024-11-05 08:18:09,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-05 08:18:09,955 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2024-11-05 08:18:09,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 08:18:09,956 INFO L225 Difference]: With dead ends: 107 [2024-11-05 08:18:09,956 INFO L226 Difference]: Without dead ends: 67 [2024-11-05 08:18:09,956 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 60 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2024-11-05 08:18:09,956 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 10 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-05 08:18:09,957 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 208 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-05 08:18:09,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-05 08:18:09,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2024-11-05 08:18:09,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 44 states have (on average 1.1590909090909092) internal successors, (51), 48 states have internal predecessors, (51), 13 states have call successors, (13), 6 states have call predecessors, (13), 9 states have return successors, (16), 12 states have call predecessors, (16), 12 states have call successors, (16) [2024-11-05 08:18:09,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 80 transitions. [2024-11-05 08:18:09,966 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 80 transitions. Word has length 42 [2024-11-05 08:18:09,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 08:18:09,966 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 80 transitions. [2024-11-05 08:18:09,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-05 08:18:09,966 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 80 transitions. [2024-11-05 08:18:09,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-05 08:18:09,967 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 08:18:09,967 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-05 08:18:09,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2024-11-05 08:18:10,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-05 08:18:10,168 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 08:18:10,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 08:18:10,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1441831310, now seen corresponding path program 1 times [2024-11-05 08:18:10,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 08:18:10,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [664131304] [2024-11-05 08:18:10,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 08:18:10,169 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-05 08:18:10,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-05 08:18:10,170 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-05 08:18:10,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-11-05 08:18:10,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 08:18:10,265 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-05 08:18:10,266 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 08:18:10,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-05 08:18:10,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-11-05 08:18:10,364 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-05 08:18:10,365 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 08:18:10,419 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-05 08:18:10,419 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 08:18:10,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [664131304] [2024-11-05 08:18:10,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [664131304] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 08:18:10,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 08:18:10,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 7 [2024-11-05 08:18:10,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69959058] [2024-11-05 08:18:10,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 08:18:10,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-05 08:18:10,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 08:18:10,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-05 08:18:10,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-05 08:18:10,420 INFO L87 Difference]: Start difference. First operand 67 states and 80 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-05 08:18:10,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 08:18:10,508 INFO L93 Difference]: Finished difference Result 119 states and 141 transitions. [2024-11-05 08:18:10,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-05 08:18:10,508 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2024-11-05 08:18:10,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 08:18:10,509 INFO L225 Difference]: With dead ends: 119 [2024-11-05 08:18:10,509 INFO L226 Difference]: Without dead ends: 69 [2024-11-05 08:18:10,509 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 74 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-05 08:18:10,510 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 4 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-05 08:18:10,510 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 235 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-05 08:18:10,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-05 08:18:10,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 63. [2024-11-05 08:18:10,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 42 states have (on average 1.1666666666666667) internal successors, (49), 45 states have internal predecessors, (49), 12 states have call successors, (12), 6 states have call predecessors, (12), 8 states have return successors, (13), 11 states have call predecessors, (13), 11 states have call successors, (13) [2024-11-05 08:18:10,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 74 transitions. [2024-11-05 08:18:10,518 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 74 transitions. Word has length 42 [2024-11-05 08:18:10,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 08:18:10,518 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 74 transitions. [2024-11-05 08:18:10,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-05 08:18:10,518 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 74 transitions. [2024-11-05 08:18:10,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-05 08:18:10,519 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 08:18:10,519 INFO L215 NwaCegarLoop]: trace histogram [3, 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] [2024-11-05 08:18:10,525 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2024-11-05 08:18:10,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-05 08:18:10,720 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 08:18:10,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 08:18:10,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1432152549, now seen corresponding path program 1 times [2024-11-05 08:18:10,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 08:18:10,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726232878] [2024-11-05 08:18:10,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 08:18:10,721 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-05 08:18:10,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-05 08:18:10,722 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-05 08:18:10,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-11-05 08:18:10,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 08:18:10,828 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-05 08:18:10,830 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 08:18:10,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-05 08:18:11,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-05 08:18:11,078 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-05 08:18:11,079 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 08:18:11,168 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-05 08:18:11,169 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 08:18:11,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1726232878] [2024-11-05 08:18:11,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1726232878] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 08:18:11,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 08:18:11,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2024-11-05 08:18:11,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992772872] [2024-11-05 08:18:11,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 08:18:11,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-05 08:18:11,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 08:18:11,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-05 08:18:11,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-05 08:18:11,170 INFO L87 Difference]: Start difference. First operand 63 states and 74 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-05 08:18:11,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 08:18:11,259 INFO L93 Difference]: Finished difference Result 69 states and 79 transitions. [2024-11-05 08:18:11,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-05 08:18:11,260 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 48 [2024-11-05 08:18:11,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 08:18:11,261 INFO L225 Difference]: With dead ends: 69 [2024-11-05 08:18:11,261 INFO L226 Difference]: Without dead ends: 67 [2024-11-05 08:18:11,261 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 73 SyntacticMatches, 11 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-05 08:18:11,261 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 3 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-05 08:18:11,262 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 237 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-05 08:18:11,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-05 08:18:11,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2024-11-05 08:18:11,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 48 states have internal predecessors, (52), 12 states have call successors, (12), 7 states have call predecessors, (12), 9 states have return successors, (13), 11 states have call predecessors, (13), 11 states have call successors, (13) [2024-11-05 08:18:11,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 77 transitions. [2024-11-05 08:18:11,275 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 77 transitions. Word has length 48 [2024-11-05 08:18:11,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 08:18:11,275 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 77 transitions. [2024-11-05 08:18:11,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-05 08:18:11,275 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 77 transitions. [2024-11-05 08:18:11,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-05 08:18:11,276 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 08:18:11,276 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 08:18:11,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2024-11-05 08:18:11,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-05 08:18:11,477 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 08:18:11,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 08:18:11,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1836428547, now seen corresponding path program 1 times [2024-11-05 08:18:11,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 08:18:11,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1894365328] [2024-11-05 08:18:11,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 08:18:11,477 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-05 08:18:11,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-05 08:18:11,478 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-05 08:18:11,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-11-05 08:18:11,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 08:18:11,606 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-05 08:18:11,609 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 08:18:11,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-05 08:18:11,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-05 08:18:11,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-05 08:18:11,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-05 08:18:12,716 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-05 08:18:12,716 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 08:18:13,179 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-05 08:18:13,179 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 08:18:13,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1894365328] [2024-11-05 08:18:13,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1894365328] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 08:18:13,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 08:18:13,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2024-11-05 08:18:13,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141070446] [2024-11-05 08:18:13,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 08:18:13,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-05 08:18:13,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 08:18:13,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-05 08:18:13,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2024-11-05 08:18:13,182 INFO L87 Difference]: Start difference. First operand 67 states and 77 transitions. Second operand has 9 states, 8 states have (on average 4.25) internal successors, (34), 7 states have internal predecessors, (34), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-05 08:18:13,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 08:18:13,535 INFO L93 Difference]: Finished difference Result 78 states and 88 transitions. [2024-11-05 08:18:13,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-05 08:18:13,535 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.25) internal successors, (34), 7 states have internal predecessors, (34), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 63 [2024-11-05 08:18:13,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 08:18:13,536 INFO L225 Difference]: With dead ends: 78 [2024-11-05 08:18:13,536 INFO L226 Difference]: Without dead ends: 76 [2024-11-05 08:18:13,537 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 101 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2024-11-05 08:18:13,537 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 10 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-05 08:18:13,537 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 282 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-05 08:18:13,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-05 08:18:13,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2024-11-05 08:18:13,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 50 states have (on average 1.14) internal successors, (57), 54 states have internal predecessors, (57), 13 states have call successors, (13), 8 states have call predecessors, (13), 11 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2024-11-05 08:18:13,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2024-11-05 08:18:13,550 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 63 [2024-11-05 08:18:13,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 08:18:13,552 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2024-11-05 08:18:13,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.25) internal successors, (34), 7 states have internal predecessors, (34), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-05 08:18:13,552 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2024-11-05 08:18:13,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-05 08:18:13,553 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 08:18:13,553 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 08:18:13,559 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2024-11-05 08:18:13,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-05 08:18:13,757 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 08:18:13,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 08:18:13,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1027081921, now seen corresponding path program 1 times [2024-11-05 08:18:13,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 08:18:13,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1240093255] [2024-11-05 08:18:13,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 08:18:13,757 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-05 08:18:13,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-05 08:18:13,758 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-05 08:18:13,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-11-05 08:18:13,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 08:18:13,876 INFO L255 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-05 08:18:13,878 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 08:18:13,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-05 08:18:14,159 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-05 08:18:14,159 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 08:18:14,304 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-05 08:18:14,305 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 08:18:14,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1240093255] [2024-11-05 08:18:14,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1240093255] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 08:18:14,305 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 08:18:14,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 12 [2024-11-05 08:18:14,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279683798] [2024-11-05 08:18:14,305 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 08:18:14,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-05 08:18:14,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 08:18:14,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-05 08:18:14,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-11-05 08:18:14,306 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 2 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-05 08:18:14,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 08:18:14,995 INFO L93 Difference]: Finished difference Result 102 states and 116 transitions. [2024-11-05 08:18:14,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-05 08:18:14,995 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 2 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 63 [2024-11-05 08:18:14,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 08:18:14,996 INFO L225 Difference]: With dead ends: 102 [2024-11-05 08:18:14,996 INFO L226 Difference]: Without dead ends: 75 [2024-11-05 08:18:14,996 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 101 SyntacticMatches, 14 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2024-11-05 08:18:14,997 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 24 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-05 08:18:14,997 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 202 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-05 08:18:14,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-05 08:18:15,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2024-11-05 08:18:15,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 50 states have (on average 1.12) internal successors, (56), 54 states have internal predecessors, (56), 13 states have call successors, (13), 8 states have call predecessors, (13), 11 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2024-11-05 08:18:15,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 84 transitions. [2024-11-05 08:18:15,012 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 84 transitions. Word has length 63 [2024-11-05 08:18:15,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 08:18:15,013 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 84 transitions. [2024-11-05 08:18:15,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 2 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-05 08:18:15,013 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 84 transitions. [2024-11-05 08:18:15,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-05 08:18:15,013 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 08:18:15,013 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 08:18:15,022 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2024-11-05 08:18:15,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-05 08:18:15,214 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 08:18:15,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 08:18:15,214 INFO L85 PathProgramCache]: Analyzing trace with hash 634054911, now seen corresponding path program 1 times [2024-11-05 08:18:15,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 08:18:15,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1690071437] [2024-11-05 08:18:15,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 08:18:15,215 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-05 08:18:15,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-05 08:18:15,216 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-05 08:18:15,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-11-05 08:18:15,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 08:18:15,350 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-05 08:18:15,352 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 08:18:15,383 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-05 08:18:15,383 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 08:18:15,435 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-05 08:18:15,435 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 08:18:15,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1690071437] [2024-11-05 08:18:15,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1690071437] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-05 08:18:15,435 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-05 08:18:15,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2024-11-05 08:18:15,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167059987] [2024-11-05 08:18:15,436 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-05 08:18:15,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-05 08:18:15,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 08:18:15,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-05 08:18:15,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-05 08:18:15,437 INFO L87 Difference]: Start difference. First operand 75 states and 84 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-05 08:18:15,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 08:18:15,458 INFO L93 Difference]: Finished difference Result 103 states and 115 transitions. [2024-11-05 08:18:15,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-05 08:18:15,459 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 63 [2024-11-05 08:18:15,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 08:18:15,459 INFO L225 Difference]: With dead ends: 103 [2024-11-05 08:18:15,459 INFO L226 Difference]: Without dead ends: 66 [2024-11-05 08:18:15,460 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-05 08:18:15,460 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 3 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-05 08:18:15,460 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 193 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-05 08:18:15,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-05 08:18:15,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2024-11-05 08:18:15,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 44 states have (on average 1.0909090909090908) internal successors, (48), 46 states have internal predecessors, (48), 12 states have call successors, (12), 8 states have call predecessors, (12), 9 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2024-11-05 08:18:15,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions. [2024-11-05 08:18:15,472 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 63 [2024-11-05 08:18:15,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 08:18:15,472 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 72 transitions. [2024-11-05 08:18:15,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-05 08:18:15,473 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions. [2024-11-05 08:18:15,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-05 08:18:15,473 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 08:18:15,473 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 08:18:15,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2024-11-05 08:18:15,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-05 08:18:15,674 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 08:18:15,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 08:18:15,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1007142523, now seen corresponding path program 1 times [2024-11-05 08:18:15,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 08:18:15,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1517464603] [2024-11-05 08:18:15,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 08:18:15,675 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-05 08:18:15,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-05 08:18:15,676 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-05 08:18:15,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-11-05 08:18:15,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 08:18:15,836 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-05 08:18:15,840 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 08:18:15,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-05 08:18:15,849 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-05 08:18:15,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-05 08:18:15,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-05 08:18:17,322 INFO L349 Elim1Store]: treesize reduction 21, result has 43.2 percent of original size [2024-11-05 08:18:17,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 157 treesize of output 106 [2024-11-05 08:18:17,382 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-05 08:18:17,382 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 08:18:18,030 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-05 08:18:18,031 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 08:18:18,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1517464603] [2024-11-05 08:18:18,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1517464603] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 08:18:18,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 08:18:18,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [14] total 24 [2024-11-05 08:18:18,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899662166] [2024-11-05 08:18:18,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 08:18:18,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-05 08:18:18,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 08:18:18,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-05 08:18:18,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2024-11-05 08:18:18,032 INFO L87 Difference]: Start difference. First operand 66 states and 72 transitions. Second operand has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-05 08:18:18,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 08:18:18,781 INFO L93 Difference]: Finished difference Result 77 states and 83 transitions. [2024-11-05 08:18:18,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-05 08:18:18,781 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 77 [2024-11-05 08:18:18,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 08:18:18,782 INFO L225 Difference]: With dead ends: 77 [2024-11-05 08:18:18,782 INFO L226 Difference]: Without dead ends: 75 [2024-11-05 08:18:18,782 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 112 SyntacticMatches, 18 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2024-11-05 08:18:18,783 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 11 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-05 08:18:18,783 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 327 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-05 08:18:18,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-05 08:18:18,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2024-11-05 08:18:18,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 49 states have (on average 1.0816326530612246) internal successors, (53), 52 states have internal predecessors, (53), 13 states have call successors, (13), 9 states have call predecessors, (13), 11 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2024-11-05 08:18:18,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 80 transitions. [2024-11-05 08:18:18,805 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 80 transitions. Word has length 77 [2024-11-05 08:18:18,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 08:18:18,806 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 80 transitions. [2024-11-05 08:18:18,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-05 08:18:18,806 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 80 transitions. [2024-11-05 08:18:18,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-05 08:18:18,807 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 08:18:18,807 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2024-11-05 08:18:18,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2024-11-05 08:18:19,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-05 08:18:19,008 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 08:18:19,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 08:18:19,008 INFO L85 PathProgramCache]: Analyzing trace with hash 197795897, now seen corresponding path program 1 times [2024-11-05 08:18:19,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 08:18:19,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1319015115] [2024-11-05 08:18:19,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 08:18:19,008 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-05 08:18:19,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-05 08:18:19,011 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-05 08:18:19,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-11-05 08:18:19,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 08:18:19,153 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-05 08:18:19,156 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 08:18:19,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-05 08:18:19,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-05 08:18:19,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-05 08:18:19,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-05 08:18:19,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2024-11-05 08:18:19,921 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 14 proven. 14 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-05 08:18:19,921 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 08:18:20,267 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-05 08:18:20,267 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 08:18:20,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1319015115] [2024-11-05 08:18:20,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1319015115] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 08:18:20,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 08:18:20,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [13] total 21 [2024-11-05 08:18:20,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341526688] [2024-11-05 08:18:20,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 08:18:20,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-05 08:18:20,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 08:18:20,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-05 08:18:20,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2024-11-05 08:18:20,269 INFO L87 Difference]: Start difference. First operand 74 states and 80 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-05 08:18:20,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 08:18:20,693 INFO L93 Difference]: Finished difference Result 86 states and 92 transitions. [2024-11-05 08:18:20,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-05 08:18:20,694 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 77 [2024-11-05 08:18:20,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 08:18:20,694 INFO L225 Difference]: With dead ends: 86 [2024-11-05 08:18:20,695 INFO L226 Difference]: Without dead ends: 74 [2024-11-05 08:18:20,695 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 116 SyntacticMatches, 17 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2024-11-05 08:18:20,695 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 10 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-05 08:18:20,695 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 194 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-05 08:18:20,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-05 08:18:20,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2024-11-05 08:18:20,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 52 states have internal predecessors, (52), 13 states have call successors, (13), 9 states have call predecessors, (13), 11 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2024-11-05 08:18:20,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 79 transitions. [2024-11-05 08:18:20,705 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 79 transitions. Word has length 77 [2024-11-05 08:18:20,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 08:18:20,705 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 79 transitions. [2024-11-05 08:18:20,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-05 08:18:20,705 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 79 transitions. [2024-11-05 08:18:20,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-05 08:18:20,705 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 08:18:20,706 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2024-11-05 08:18:20,713 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2024-11-05 08:18:20,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-05 08:18:20,906 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 08:18:20,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 08:18:20,906 INFO L85 PathProgramCache]: Analyzing trace with hash -195231113, now seen corresponding path program 1 times [2024-11-05 08:18:20,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 08:18:20,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1292078654] [2024-11-05 08:18:20,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 08:18:20,907 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-05 08:18:20,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-05 08:18:20,908 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-05 08:18:20,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2024-11-05 08:18:21,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 08:18:21,037 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-05 08:18:21,039 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 08:18:21,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-05 08:18:21,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-11-05 08:18:21,156 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 14 proven. 14 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-05 08:18:21,156 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 08:18:21,218 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-05 08:18:21,218 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 08:18:21,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1292078654] [2024-11-05 08:18:21,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1292078654] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 08:18:21,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 08:18:21,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 9 [2024-11-05 08:18:21,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883166826] [2024-11-05 08:18:21,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 08:18:21,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-05 08:18:21,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 08:18:21,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-05 08:18:21,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-05 08:18:21,219 INFO L87 Difference]: Start difference. First operand 74 states and 79 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-05 08:18:21,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 08:18:21,311 INFO L93 Difference]: Finished difference Result 87 states and 91 transitions. [2024-11-05 08:18:21,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-05 08:18:21,312 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 77 [2024-11-05 08:18:21,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 08:18:21,312 INFO L225 Difference]: With dead ends: 87 [2024-11-05 08:18:21,312 INFO L226 Difference]: Without dead ends: 63 [2024-11-05 08:18:21,313 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 142 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-05 08:18:21,313 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 4 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-05 08:18:21,313 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 313 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-05 08:18:21,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-05 08:18:21,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-11-05 08:18:21,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 42 states have (on average 1.0) internal successors, (42), 42 states have internal predecessors, (42), 12 states have call successors, (12), 9 states have call predecessors, (12), 8 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-05 08:18:21,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2024-11-05 08:18:21,321 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 77 [2024-11-05 08:18:21,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 08:18:21,321 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2024-11-05 08:18:21,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-05 08:18:21,321 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2024-11-05 08:18:21,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-05 08:18:21,321 INFO L207 NwaCegarLoop]: Found error trace [2024-11-05 08:18:21,322 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 08:18:21,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2024-11-05 08:18:21,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-05 08:18:21,522 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-05 08:18:21,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-05 08:18:21,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1385380010, now seen corresponding path program 1 times [2024-11-05 08:18:21,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-05 08:18:21,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1001814400] [2024-11-05 08:18:21,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-05 08:18:21,523 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-05 08:18:21,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-05 08:18:21,524 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-05 08:18:21,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2024-11-05 08:18:21,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-05 08:18:21,694 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-05 08:18:21,696 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-05 08:18:21,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-05 08:18:21,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-05 08:18:21,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-05 08:18:21,908 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-05 08:18:21,908 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-05 08:18:22,092 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-05 08:18:22,092 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-05 08:18:22,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1001814400] [2024-11-05 08:18:22,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1001814400] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-05 08:18:22,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-05 08:18:22,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2024-11-05 08:18:22,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245888316] [2024-11-05 08:18:22,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-05 08:18:22,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-05 08:18:22,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-05 08:18:22,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-05 08:18:22,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2024-11-05 08:18:22,094 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-05 08:18:22,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-05 08:18:22,250 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2024-11-05 08:18:22,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-05 08:18:22,251 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 83 [2024-11-05 08:18:22,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-05 08:18:22,251 INFO L225 Difference]: With dead ends: 63 [2024-11-05 08:18:22,251 INFO L226 Difference]: Without dead ends: 0 [2024-11-05 08:18:22,251 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 148 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2024-11-05 08:18:22,252 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 3 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-05 08:18:22,252 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 252 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-05 08:18:22,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-05 08:18:22,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-05 08:18:22,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-05 08:18:22,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-05 08:18:22,252 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 83 [2024-11-05 08:18:22,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-05 08:18:22,253 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-05 08:18:22,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-05 08:18:22,253 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-05 08:18:22,253 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-05 08:18:22,255 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-05 08:18:22,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2024-11-05 08:18:22,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-05 08:18:22,458 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-05 08:18:22,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-05 08:18:39,208 WARN L286 SmtUtils]: Spent 5.11s on a formula simplification. DAG size of input: 139 DAG size of output: 68 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter)