/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 'cvc4 --incremental --print-success --lang smt' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/aws-c-common/aws_array_list_pop_back_harness.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-04 20:23:59,899 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-04 20:23:59,972 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-04 20:23:59,978 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-04 20:23:59,979 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-04 20:24:00,003 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-04 20:24:00,004 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-04 20:24:00,004 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-04 20:24:00,005 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-04 20:24:00,005 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-04 20:24:00,006 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-04 20:24:00,006 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-04 20:24:00,007 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-04 20:24:00,007 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-04 20:24:00,007 INFO L153 SettingsManager]: * Use SBE=true [2024-11-04 20:24:00,008 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-04 20:24:00,008 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-04 20:24:00,012 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-04 20:24:00,012 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-04 20:24:00,013 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-04 20:24:00,013 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-04 20:24:00,013 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-04 20:24:00,013 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-04 20:24:00,014 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-04 20:24:00,014 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-04 20:24:00,014 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-04 20:24:00,014 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-04 20:24:00,015 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-04 20:24:00,015 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-04 20:24:00,015 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-04 20:24:00,015 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-04 20:24:00,016 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-04 20:24:00,016 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-04 20:24:00,016 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-04 20:24:00,016 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-04 20:24:00,017 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-04 20:24:00,017 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-04 20:24:00,019 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-04 20:24:00,019 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-04 20:24:00,019 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-04 20:24:00,019 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-04 20:24:00,020 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt [2024-11-04 20:24:00,244 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-04 20:24:00,269 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-04 20:24:00,272 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-04 20:24:00,273 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-04 20:24:00,275 INFO L274 PluginConnector]: CDTParser initialized [2024-11-04 20:24:00,276 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_array_list_pop_back_harness.i [2024-11-04 20:24:01,659 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-04 20:24:02,132 INFO L384 CDTParser]: Found 1 translation units. [2024-11-04 20:24:02,132 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_array_list_pop_back_harness.i [2024-11-04 20:24:02,167 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28b08a2b6/e5ac1e76682b4805b62397e35a511098/FLAG0b9f48570 [2024-11-04 20:24:02,193 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28b08a2b6/e5ac1e76682b4805b62397e35a511098 [2024-11-04 20:24:02,196 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-04 20:24:02,197 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-04 20:24:02,198 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-04 20:24:02,198 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-04 20:24:02,205 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-04 20:24:02,206 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 08:24:02" (1/1) ... [2024-11-04 20:24:02,207 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35ed851 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:24:02, skipping insertion in model container [2024-11-04 20:24:02,207 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 08:24:02" (1/1) ... [2024-11-04 20:24:02,319 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-04 20:24:02,633 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_array_list_pop_back_harness.i[4497,4510] [2024-11-04 20:24:02,644 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_array_list_pop_back_harness.i[4557,4570] [2024-11-04 20:24:03,075 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,193 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,194 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,194 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,209 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,210 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:24:03,211 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:24:03,211 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:24:03,212 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,216 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:24:03,217 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:24:03,219 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,220 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,222 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,222 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,230 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:24:03,231 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,231 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:24:03,231 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,233 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:24:03,233 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,233 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:24:03,234 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,235 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:24:03,235 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,236 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:24:03,236 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,236 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:24:03,237 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:24:03,478 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,479 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,479 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,480 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,570 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,608 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,616 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:24:03,627 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:24:03,632 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,633 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,633 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,633 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,634 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,634 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,634 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,635 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,636 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,636 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,636 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,636 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,637 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,637 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,677 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,683 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-04 20:24:03,737 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-04 20:24:03,772 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-04 20:24:03,776 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_array_list_pop_back_harness.i[4497,4510] [2024-11-04 20:24:03,777 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_array_list_pop_back_harness.i[4557,4570] [2024-11-04 20:24:03,804 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,837 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,838 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,838 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,844 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,846 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:24:03,847 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:24:03,847 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:24:03,847 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,848 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:24:03,848 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:24:03,851 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,851 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,853 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,853 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,857 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:24:03,858 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,858 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:24:03,858 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,859 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:24:03,860 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,860 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:24:03,860 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,861 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:24:03,862 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,862 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:24:03,862 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,863 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:24:03,863 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:24:03,925 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,926 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,926 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,926 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,956 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,969 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,971 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:24:03,980 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:24:03,983 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,983 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,984 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,984 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,984 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,985 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,985 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,985 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,986 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,986 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,986 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,986 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,987 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:03,987 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:04,014 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:24:04,019 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-04 20:24:04,047 INFO L200 MainTranslator]: Completed pre-run [2024-11-04 20:24:04,064 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_array_list_pop_back_harness.i[4497,4510] [2024-11-04 20:24:04,064 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_array_list_pop_back_harness.i[4557,4570] [2024-11-04 20:24:04,118 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:24:04,119 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:24:04,119 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:24:04,121 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:24:04,121 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:24:04,127 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:24:04,128 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:24:04,128 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:24:04,129 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:24:04,129 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:24:04,130 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:24:04,132 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:24:04,132 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:24:04,202 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:24:04,205 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:24:04,210 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7769-7780] [2024-11-04 20:24:04,228 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-04 20:24:04,389 INFO L204 MainTranslator]: Completed translation [2024-11-04 20:24:04,389 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:24:04 WrapperNode [2024-11-04 20:24:04,389 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-04 20:24:04,390 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-04 20:24:04,390 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-04 20:24:04,391 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-04 20:24:04,398 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:24:04" (1/1) ... [2024-11-04 20:24:04,465 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:24:04" (1/1) ... [2024-11-04 20:24:04,543 INFO L138 Inliner]: procedures = 700, calls = 1695, calls flagged for inlining = 52, calls inlined = 8, statements flattened = 615 [2024-11-04 20:24:04,544 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-04 20:24:04,545 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-04 20:24:04,545 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-04 20:24:04,545 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-04 20:24:04,556 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:24:04" (1/1) ... [2024-11-04 20:24:04,557 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:24:04" (1/1) ... [2024-11-04 20:24:04,573 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:24:04" (1/1) ... [2024-11-04 20:24:04,658 INFO L175 MemorySlicer]: Split 319 memory accesses to 6 slices as follows [238, 6, 2, 3, 8, 62]. 75 percent of accesses are in the largest equivalence class. The 24 initializations are split as follows [6, 0, 2, 1, 5, 10]. The 240 writes are split as follows [232, 2, 0, 1, 1, 4]. [2024-11-04 20:24:04,660 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:24:04" (1/1) ... [2024-11-04 20:24:04,661 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:24:04" (1/1) ... [2024-11-04 20:24:04,717 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:24:04" (1/1) ... [2024-11-04 20:24:04,723 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:24:04" (1/1) ... [2024-11-04 20:24:04,741 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:24:04" (1/1) ... [2024-11-04 20:24:04,748 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:24:04" (1/1) ... [2024-11-04 20:24:04,758 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-04 20:24:04,758 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-04 20:24:04,759 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-04 20:24:04,759 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-04 20:24:04,760 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:24:04" (1/1) ... [2024-11-04 20:24:04,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-04 20:24:04,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 20:24:04,793 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) [2024-11-04 20:24:04,798 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 [2024-11-04 20:24:04,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-04 20:24:04,822 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2024-11-04 20:24:04,822 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2024-11-04 20:24:04,822 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2024-11-04 20:24:04,822 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2024-11-04 20:24:04,822 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-04 20:24:04,822 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-04 20:24:04,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-04 20:24:04,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-04 20:24:04,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-04 20:24:04,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-11-04 20:24:04,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2024-11-04 20:24:04,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2024-11-04 20:24:04,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2024-11-04 20:24:04,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2024-11-04 20:24:04,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2024-11-04 20:24:04,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2024-11-04 20:24:04,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#4 [2024-11-04 20:24:04,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#5 [2024-11-04 20:24:04,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8#0 [2024-11-04 20:24:04,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8#1 [2024-11-04 20:24:04,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8#2 [2024-11-04 20:24:04,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8#3 [2024-11-04 20:24:04,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8#4 [2024-11-04 20:24:04,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8#5 [2024-11-04 20:24:04,825 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-11-04 20:24:04,825 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-11-04 20:24:04,825 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-04 20:24:04,825 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-04 20:24:04,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-04 20:24:04,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-04 20:24:04,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-04 20:24:04,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-04 20:24:04,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-04 20:24:04,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-04 20:24:04,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-04 20:24:04,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-04 20:24:04,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-04 20:24:04,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-04 20:24:04,827 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-04 20:24:04,827 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-04 20:24:04,827 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-11-04 20:24:04,827 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-11-04 20:24:04,827 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2024-11-04 20:24:04,827 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2024-11-04 20:24:04,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#4 [2024-11-04 20:24:04,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#5 [2024-11-04 20:24:04,828 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2024-11-04 20:24:04,828 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2024-11-04 20:24:04,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8#0 [2024-11-04 20:24:04,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8#1 [2024-11-04 20:24:04,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8#2 [2024-11-04 20:24:04,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8#3 [2024-11-04 20:24:04,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8#4 [2024-11-04 20:24:04,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8#5 [2024-11-04 20:24:04,829 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2024-11-04 20:24:04,829 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2024-11-04 20:24:04,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-04 20:24:04,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-04 20:24:04,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-04 20:24:04,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-04 20:24:04,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-04 20:24:04,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-04 20:24:04,830 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2024-11-04 20:24:04,830 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2024-11-04 20:24:04,830 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-04 20:24:04,830 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-04 20:24:04,830 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2024-11-04 20:24:04,831 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2024-11-04 20:24:04,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-04 20:24:04,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-04 20:24:04,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-04 20:24:04,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-04 20:24:04,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-04 20:24:04,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-04 20:24:04,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-04 20:24:04,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8#0 [2024-11-04 20:24:04,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8#1 [2024-11-04 20:24:04,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8#2 [2024-11-04 20:24:04,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8#3 [2024-11-04 20:24:04,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8#4 [2024-11-04 20:24:04,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8#5 [2024-11-04 20:24:04,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2024-11-04 20:24:04,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2024-11-04 20:24:04,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2024-11-04 20:24:04,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2024-11-04 20:24:04,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#4 [2024-11-04 20:24:04,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#5 [2024-11-04 20:24:04,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-04 20:24:04,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-04 20:24:04,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-04 20:24:04,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-04 20:24:04,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-04 20:24:04,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-04 20:24:04,834 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-04 20:24:04,834 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-04 20:24:04,834 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2024-11-04 20:24:04,834 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2024-11-04 20:24:04,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4#0 [2024-11-04 20:24:04,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4#1 [2024-11-04 20:24:04,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4#2 [2024-11-04 20:24:04,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4#3 [2024-11-04 20:24:04,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4#4 [2024-11-04 20:24:04,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4#5 [2024-11-04 20:24:04,835 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2024-11-04 20:24:04,835 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2024-11-04 20:24:04,835 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2024-11-04 20:24:04,835 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2024-11-04 20:24:04,835 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2024-11-04 20:24:04,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2024-11-04 20:24:05,219 INFO L238 CfgBuilder]: Building ICFG [2024-11-04 20:24:05,222 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-04 20:24:15,109 INFO L? ?]: Removed 114 outVars from TransFormulas that were not future-live. [2024-11-04 20:24:15,109 INFO L287 CfgBuilder]: Performing block encoding [2024-11-04 20:24:15,124 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-04 20:24:15,124 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-04 20:24:15,124 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 08:24:15 BoogieIcfgContainer [2024-11-04 20:24:15,125 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-04 20:24:15,127 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-04 20:24:15,127 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-04 20:24:15,130 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-04 20:24:15,131 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 08:24:02" (1/3) ... [2024-11-04 20:24:15,131 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a89e9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 08:24:15, skipping insertion in model container [2024-11-04 20:24:15,131 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:24:04" (2/3) ... [2024-11-04 20:24:15,132 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a89e9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 08:24:15, skipping insertion in model container [2024-11-04 20:24:15,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 08:24:15" (3/3) ... [2024-11-04 20:24:15,133 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_pop_back_harness.i [2024-11-04 20:24:15,153 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-04 20:24:15,154 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-04 20:24:15,232 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-04 20:24:15,237 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;@a779bfb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-04 20:24:15,238 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-04 20:24:15,245 INFO L276 IsEmpty]: Start isEmpty. Operand has 169 states, 103 states have (on average 1.203883495145631) internal successors, (124), 104 states have internal predecessors, (124), 48 states have call successors, (48), 16 states have call predecessors, (48), 16 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-04 20:24:15,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-04 20:24:15,259 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 20:24:15,261 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 20:24:15,262 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 20:24:15,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 20:24:15,269 INFO L85 PathProgramCache]: Analyzing trace with hash 325563540, now seen corresponding path program 1 times [2024-11-04 20:24:15,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 20:24:15,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1834999225] [2024-11-04 20:24:15,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 20:24:15,280 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-04 20:24:15,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-04 20:24:15,283 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-04 20:24:15,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-11-04 20:24:22,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 20:24:22,232 INFO L255 TraceCheckSpWp]: Trace formula consists of 2435 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-04 20:24:22,240 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 20:24:22,259 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-04 20:24:22,259 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 20:24:24,663 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-04 20:24:24,665 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 20:24:24,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1834999225] [2024-11-04 20:24:24,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1834999225] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-04 20:24:24,665 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-04 20:24:24,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-04 20:24:24,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317279294] [2024-11-04 20:24:24,668 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-04 20:24:24,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-04 20:24:24,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 20:24:24,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-04 20:24:24,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-04 20:24:24,693 INFO L87 Difference]: Start difference. First operand has 169 states, 103 states have (on average 1.203883495145631) internal successors, (124), 104 states have internal predecessors, (124), 48 states have call successors, (48), 16 states have call predecessors, (48), 16 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-04 20:24:24,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 20:24:24,756 INFO L93 Difference]: Finished difference Result 331 states and 465 transitions. [2024-11-04 20:24:24,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-04 20:24:24,760 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 84 [2024-11-04 20:24:24,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 20:24:24,771 INFO L225 Difference]: With dead ends: 331 [2024-11-04 20:24:24,771 INFO L226 Difference]: Without dead ends: 164 [2024-11-04 20:24:24,781 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-04 20:24:24,786 INFO L432 NwaCegarLoop]: 217 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, 217 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 [2024-11-04 20:24:24,789 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-04 20:24:24,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-11-04 20:24:24,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2024-11-04 20:24:24,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 99 states have (on average 1.1818181818181819) internal successors, (117), 100 states have internal predecessors, (117), 48 states have call successors, (48), 16 states have call predecessors, (48), 16 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-11-04 20:24:24,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 212 transitions. [2024-11-04 20:24:24,859 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 212 transitions. Word has length 84 [2024-11-04 20:24:24,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 20:24:24,859 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 212 transitions. [2024-11-04 20:24:24,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-04 20:24:24,860 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 212 transitions. [2024-11-04 20:24:24,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-04 20:24:24,865 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 20:24:24,865 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 20:24:24,879 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Ended with exit code 0 [2024-11-04 20:24:25,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-04 20:24:25,066 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 20:24:25,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 20:24:25,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1337784816, now seen corresponding path program 1 times [2024-11-04 20:24:25,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 20:24:25,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1996902054] [2024-11-04 20:24:25,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 20:24:25,068 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-04 20:24:25,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-04 20:24:25,069 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-04 20:24:25,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-11-04 20:24:31,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 20:24:31,728 INFO L255 TraceCheckSpWp]: Trace formula consists of 2435 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-04 20:24:31,733 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 20:24:32,026 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-04 20:24:32,027 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 20:24:34,580 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-04 20:24:34,581 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 20:24:34,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1996902054] [2024-11-04 20:24:34,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1996902054] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-04 20:24:34,581 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-04 20:24:34,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-04 20:24:34,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332651120] [2024-11-04 20:24:34,582 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-04 20:24:34,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-04 20:24:34,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 20:24:34,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-04 20:24:34,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-04 20:24:34,584 INFO L87 Difference]: Start difference. First operand 164 states and 212 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-04 20:24:34,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 20:24:34,859 INFO L93 Difference]: Finished difference Result 302 states and 393 transitions. [2024-11-04 20:24:34,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-04 20:24:34,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 84 [2024-11-04 20:24:34,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 20:24:34,863 INFO L225 Difference]: With dead ends: 302 [2024-11-04 20:24:34,863 INFO L226 Difference]: Without dead ends: 165 [2024-11-04 20:24:34,864 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-04 20:24:34,865 INFO L432 NwaCegarLoop]: 211 mSDtfsCounter, 0 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-04 20:24:34,865 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 418 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-04 20:24:34,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-11-04 20:24:34,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2024-11-04 20:24:34,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 100 states have (on average 1.18) internal successors, (118), 101 states have internal predecessors, (118), 48 states have call successors, (48), 16 states have call predecessors, (48), 16 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-11-04 20:24:34,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 213 transitions. [2024-11-04 20:24:34,881 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 213 transitions. Word has length 84 [2024-11-04 20:24:34,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 20:24:34,882 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 213 transitions. [2024-11-04 20:24:34,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2024-11-04 20:24:34,882 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 213 transitions. [2024-11-04 20:24:34,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-04 20:24:34,884 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 20:24:34,884 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 20:24:34,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Forceful destruction successful, exit code 0 [2024-11-04 20:24:35,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-04 20:24:35,086 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 20:24:35,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 20:24:35,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1048724690, now seen corresponding path program 1 times [2024-11-04 20:24:35,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 20:24:35,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [421584487] [2024-11-04 20:24:35,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 20:24:35,088 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-04 20:24:35,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-04 20:24:35,090 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-04 20:24:35,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-04 20:24:40,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 20:24:40,967 INFO L255 TraceCheckSpWp]: Trace formula consists of 2437 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-04 20:24:40,972 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 20:24:42,671 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-04 20:24:42,672 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 20:24:47,303 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-04 20:24:47,303 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 20:24:47,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [421584487] [2024-11-04 20:24:47,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [421584487] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-04 20:24:47,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-04 20:24:47,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2024-11-04 20:24:47,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708280125] [2024-11-04 20:24:47,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-04 20:24:47,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-04 20:24:47,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 20:24:47,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-04 20:24:47,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-04 20:24:47,306 INFO L87 Difference]: Start difference. First operand 165 states and 213 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-04 20:24:51,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 20:24:51,223 INFO L93 Difference]: Finished difference Result 294 states and 388 transitions. [2024-11-04 20:24:51,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-04 20:24:51,227 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 84 [2024-11-04 20:24:51,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 20:24:51,230 INFO L225 Difference]: With dead ends: 294 [2024-11-04 20:24:51,230 INFO L226 Difference]: Without dead ends: 167 [2024-11-04 20:24:51,231 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-04 20:24:51,232 INFO L432 NwaCegarLoop]: 193 mSDtfsCounter, 34 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-04 20:24:51,232 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 711 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-04 20:24:51,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-11-04 20:24:51,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2024-11-04 20:24:51,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 101 states have (on average 1.1782178217821782) internal successors, (119), 103 states have internal predecessors, (119), 48 states have call successors, (48), 16 states have call predecessors, (48), 17 states have return successors, (52), 47 states have call predecessors, (52), 47 states have call successors, (52) [2024-11-04 20:24:51,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 219 transitions. [2024-11-04 20:24:51,249 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 219 transitions. Word has length 84 [2024-11-04 20:24:51,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 20:24:51,250 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 219 transitions. [2024-11-04 20:24:51,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-04 20:24:51,250 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 219 transitions. [2024-11-04 20:24:51,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-04 20:24:51,253 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 20:24:51,253 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 20:24:51,275 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2024-11-04 20:24:51,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-04 20:24:51,455 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 20:24:51,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 20:24:51,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1813747896, now seen corresponding path program 1 times [2024-11-04 20:24:51,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 20:24:51,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1072921281] [2024-11-04 20:24:51,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 20:24:51,456 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-04 20:24:51,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-04 20:24:51,459 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-04 20:24:51,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2024-11-04 20:24:57,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 20:24:57,623 INFO L255 TraceCheckSpWp]: Trace formula consists of 2537 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-04 20:24:57,628 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 20:25:00,882 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-04 20:25:00,882 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 20:25:06,685 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-04 20:25:06,685 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 20:25:06,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1072921281] [2024-11-04 20:25:06,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1072921281] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-04 20:25:06,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-04 20:25:06,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 8 [2024-11-04 20:25:06,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679614150] [2024-11-04 20:25:06,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-04 20:25:06,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-04 20:25:06,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 20:25:06,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-04 20:25:06,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-04 20:25:06,687 INFO L87 Difference]: Start difference. First operand 167 states and 219 transitions. Second operand has 7 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-04 20:25:12,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 20:25:12,494 INFO L93 Difference]: Finished difference Result 286 states and 377 transitions. [2024-11-04 20:25:12,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-04 20:25:12,498 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 99 [2024-11-04 20:25:12,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 20:25:12,501 INFO L225 Difference]: With dead ends: 286 [2024-11-04 20:25:12,502 INFO L226 Difference]: Without dead ends: 167 [2024-11-04 20:25:12,503 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-04 20:25:12,504 INFO L432 NwaCegarLoop]: 190 mSDtfsCounter, 52 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 1045 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2024-11-04 20:25:12,504 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 1045 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2024-11-04 20:25:12,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-11-04 20:25:12,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2024-11-04 20:25:12,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 101 states have (on average 1.1782178217821782) internal successors, (119), 103 states have internal predecessors, (119), 48 states have call successors, (48), 16 states have call predecessors, (48), 17 states have return successors, (49), 47 states have call predecessors, (49), 47 states have call successors, (49) [2024-11-04 20:25:12,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 216 transitions. [2024-11-04 20:25:12,525 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 216 transitions. Word has length 99 [2024-11-04 20:25:12,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 20:25:12,526 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 216 transitions. [2024-11-04 20:25:12,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-04 20:25:12,526 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 216 transitions. [2024-11-04 20:25:12,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-04 20:25:12,528 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 20:25:12,529 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 20:25:12,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2024-11-04 20:25:12,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-04 20:25:12,730 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 20:25:12,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 20:25:12,730 INFO L85 PathProgramCache]: Analyzing trace with hash 19275334, now seen corresponding path program 2 times [2024-11-04 20:25:12,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 20:25:12,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263717002] [2024-11-04 20:25:12,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 20:25:12,731 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-04 20:25:12,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-04 20:25:12,732 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-04 20:25:12,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2024-11-04 20:25:19,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 20:25:19,071 INFO L255 TraceCheckSpWp]: Trace formula consists of 2637 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-04 20:25:19,075 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 20:25:24,087 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-04 20:25:24,088 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 20:25:31,411 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-04 20:25:31,412 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 20:25:31,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [263717002] [2024-11-04 20:25:31,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [263717002] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-04 20:25:31,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-04 20:25:31,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 10 [2024-11-04 20:25:31,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016288608] [2024-11-04 20:25:31,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-04 20:25:31,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-04 20:25:31,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 20:25:31,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-04 20:25:31,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-04 20:25:31,414 INFO L87 Difference]: Start difference. First operand 167 states and 216 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 7 states have internal predecessors, (51), 5 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15)