./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 13ec24500153ff48401c44b6cbf6e64bbffda498093f21927cfcfb52ad2376ab --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 12:53:39,833 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 12:53:39,879 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-10-24 12:53:39,883 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 12:53:39,884 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 12:53:39,903 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 12:53:39,904 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 12:53:39,905 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 12:53:39,905 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 12:53:39,906 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 12:53:39,907 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 12:53:39,907 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 12:53:39,907 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 12:53:39,908 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 12:53:39,909 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 12:53:39,909 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 12:53:39,910 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 12:53:39,910 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 12:53:39,910 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 12:53:39,910 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 12:53:39,911 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 12:53:39,913 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 12:53:39,914 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 12:53:39,914 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 12:53:39,914 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 12:53:39,914 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 12:53:39,914 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 12:53:39,915 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 12:53:39,915 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 12:53:39,915 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:53:39,915 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 12:53:39,915 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 12:53:39,915 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 12:53:39,916 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 12:53:39,916 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 12:53:39,916 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 12:53:39,916 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 12:53:39,916 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 12:53:39,916 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 12:53:39,917 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13ec24500153ff48401c44b6cbf6e64bbffda498093f21927cfcfb52ad2376ab [2024-10-24 12:53:40,125 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 12:53:40,147 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 12:53:40,150 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 12:53:40,151 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 12:53:40,152 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 12:53:40,153 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i [2024-10-24 12:53:41,406 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 12:53:41,765 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 12:53:41,766 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i [2024-10-24 12:53:41,802 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/892c456ba/91f9106e4cdf4bf99dc6e22dd296668b/FLAGc55e56191 [2024-10-24 12:53:41,816 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/892c456ba/91f9106e4cdf4bf99dc6e22dd296668b [2024-10-24 12:53:41,819 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 12:53:41,820 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 12:53:41,822 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 12:53:41,822 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 12:53:41,827 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 12:53:41,827 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:53:41" (1/1) ... [2024-10-24 12:53:41,828 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1097e685 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:53:41, skipping insertion in model container [2024-10-24 12:53:41,828 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:53:41" (1/1) ... [2024-10-24 12:53:41,933 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 12:53:42,135 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i[4498,4511] [2024-10-24 12:53:42,142 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i[4558,4571] [2024-10-24 12:53:42,899 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:53:42,899 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:53:42,899 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:53:42,900 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:53:42,901 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:53:42,920 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:53:42,921 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:53:42,923 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:53:42,925 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:53:43,458 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:53:43,459 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:53:43,527 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:53:43,573 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 12:53:43,588 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i[4498,4511] [2024-10-24 12:53:43,589 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i[4558,4571] [2024-10-24 12:53:43,617 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:53:43,617 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:53:43,617 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:53:43,618 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:53:43,618 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:53:43,622 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:53:43,623 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:53:43,624 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:53:43,624 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:53:43,705 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8269] [2024-10-24 12:53:43,706 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:53:43,707 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:53:43,719 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8755-8766] [2024-10-24 12:53:43,732 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:53:43,900 INFO L204 MainTranslator]: Completed translation [2024-10-24 12:53:43,900 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:53:43 WrapperNode [2024-10-24 12:53:43,901 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 12:53:43,901 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 12:53:43,901 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 12:53:43,901 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 12:53:43,907 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:53:43" (1/1) ... [2024-10-24 12:53:43,971 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:53:43" (1/1) ... [2024-10-24 12:53:44,030 INFO L138 Inliner]: procedures = 679, calls = 2621, calls flagged for inlining = 61, calls inlined = 9, statements flattened = 867 [2024-10-24 12:53:44,030 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 12:53:44,031 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 12:53:44,031 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 12:53:44,031 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 12:53:44,048 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:53:43" (1/1) ... [2024-10-24 12:53:44,048 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:53:43" (1/1) ... [2024-10-24 12:53:44,059 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:53:43" (1/1) ... [2024-10-24 12:53:44,126 INFO L175 MemorySlicer]: Split 562 memory accesses to 6 slices as follows [2, 245, 256, 39, 14, 6]. 46 percent of accesses are in the largest equivalence class. The 509 initializations are split as follows [2, 241, 256, 8, 2, 0]. The 6 writes are split as follows [0, 0, 0, 2, 2, 2]. [2024-10-24 12:53:44,130 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:53:43" (1/1) ... [2024-10-24 12:53:44,130 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:53:43" (1/1) ... [2024-10-24 12:53:44,157 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:53:43" (1/1) ... [2024-10-24 12:53:44,162 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:53:43" (1/1) ... [2024-10-24 12:53:44,171 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:53:43" (1/1) ... [2024-10-24 12:53:44,179 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:53:43" (1/1) ... [2024-10-24 12:53:44,194 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 12:53:44,195 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 12:53:44,197 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 12:53:44,198 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 12:53:44,198 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:53:43" (1/1) ... [2024-10-24 12:53:44,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:53:44,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:53:44,229 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) [2024-10-24 12:53:44,236 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 [2024-10-24 12:53:44,269 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2024-10-24 12:53:44,270 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2024-10-24 12:53:44,270 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2024-10-24 12:53:44,271 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2024-10-24 12:53:44,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-24 12:53:44,271 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-10-24 12:53:44,272 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-10-24 12:53:44,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 12:53:44,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 12:53:44,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-24 12:53:44,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-24 12:53:44,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-24 12:53:44,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-10-24 12:53:44,272 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-24 12:53:44,272 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-24 12:53:44,272 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_from_buf [2024-10-24 12:53:44,272 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_from_buf [2024-10-24 12:53:44,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 12:53:44,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 12:53:44,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-24 12:53:44,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-24 12:53:44,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-24 12:53:44,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-10-24 12:53:44,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-10-24 12:53:44,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-10-24 12:53:44,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 12:53:44,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 12:53:44,273 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-10-24 12:53:44,273 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-10-24 12:53:44,273 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2024-10-24 12:53:44,273 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2024-10-24 12:53:44,273 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-24 12:53:44,273 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-24 12:53:44,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-24 12:53:44,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-24 12:53:44,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-24 12:53:44,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-24 12:53:44,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-10-24 12:53:44,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-10-24 12:53:44,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-10-24 12:53:44,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-10-24 12:53:44,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-10-24 12:53:44,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-10-24 12:53:44,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-10-24 12:53:44,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-10-24 12:53:44,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-10-24 12:53:44,274 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-10-24 12:53:44,274 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-10-24 12:53:44,274 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-10-24 12:53:44,274 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-10-24 12:53:44,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 12:53:44,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 12:53:44,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-24 12:53:44,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-24 12:53:44,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-24 12:53:44,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-10-24 12:53:44,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 12:53:44,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 12:53:44,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-24 12:53:44,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-24 12:53:44,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-24 12:53:44,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-24 12:53:44,506 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 12:53:44,508 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 12:53:45,219 INFO L? ?]: Removed 125 outVars from TransFormulas that were not future-live. [2024-10-24 12:53:45,220 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 12:53:45,378 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 12:53:45,378 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-24 12:53:45,378 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:53:45 BoogieIcfgContainer [2024-10-24 12:53:45,378 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 12:53:45,380 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 12:53:45,380 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 12:53:45,383 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 12:53:45,384 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:53:41" (1/3) ... [2024-10-24 12:53:45,384 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6557767f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:53:45, skipping insertion in model container [2024-10-24 12:53:45,384 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:53:43" (2/3) ... [2024-10-24 12:53:45,385 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6557767f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:53:45, skipping insertion in model container [2024-10-24 12:53:45,385 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:53:45" (3/3) ... [2024-10-24 12:53:45,386 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_from_buf_harness.i [2024-10-24 12:53:45,400 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 12:53:45,400 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 12:53:45,465 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 12:53:45,470 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;@664990b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 12:53:45,471 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 12:53:45,475 INFO L276 IsEmpty]: Start isEmpty. Operand has 114 states, 74 states have (on average 1.2972972972972974) internal successors, (96), 75 states have internal predecessors, (96), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-10-24 12:53:45,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-10-24 12:53:45,483 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:53:45,484 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2024-10-24 12:53:45,484 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:53:45,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:53:45,490 INFO L85 PathProgramCache]: Analyzing trace with hash -410540819, now seen corresponding path program 1 times [2024-10-24 12:53:45,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:53:45,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665690238] [2024-10-24 12:53:45,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:53:45,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:53:45,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:46,524 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:53:46,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:46,553 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:53:46,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:46,581 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 12:53:46,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:46,604 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:53:46,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:46,610 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 12:53:46,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:46,673 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-24 12:53:46,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:46,685 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 12:53:46,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:46,701 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-24 12:53:46,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:46,710 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 12:53:46,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:46,719 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-24 12:53:46,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:53:46,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665690238] [2024-10-24 12:53:46,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665690238] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:53:46,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323910099] [2024-10-24 12:53:46,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:53:46,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:53:46,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:53:46,723 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 12:53:46,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 12:53:47,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:47,173 INFO L255 TraceCheckSpWp]: Trace formula consists of 2528 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 12:53:47,179 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:53:47,296 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-24 12:53:47,298 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:53:47,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323910099] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:53:47,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:53:47,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2024-10-24 12:53:47,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191214317] [2024-10-24 12:53:47,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:53:47,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:53:47,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:53:47,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:53:47,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-10-24 12:53:47,327 INFO L87 Difference]: Start difference. First operand has 114 states, 74 states have (on average 1.2972972972972974) internal successors, (96), 75 states have internal predecessors, (96), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-10-24 12:53:47,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:53:47,468 INFO L93 Difference]: Finished difference Result 228 states and 325 transitions. [2024-10-24 12:53:47,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:53:47,471 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 57 [2024-10-24 12:53:47,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:53:47,479 INFO L225 Difference]: With dead ends: 228 [2024-10-24 12:53:47,479 INFO L226 Difference]: Without dead ends: 112 [2024-10-24 12:53:47,482 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-10-24 12:53:47,484 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 29 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 12:53:47,485 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 467 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 12:53:47,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-10-24 12:53:47,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2024-10-24 12:53:47,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 72 states have (on average 1.25) internal successors, (90), 74 states have internal predecessors, (90), 28 states have call successors, (28), 10 states have call predecessors, (28), 11 states have return successors, (28), 27 states have call predecessors, (28), 27 states have call successors, (28) [2024-10-24 12:53:47,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 146 transitions. [2024-10-24 12:53:47,523 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 146 transitions. Word has length 57 [2024-10-24 12:53:47,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:53:47,524 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 146 transitions. [2024-10-24 12:53:47,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-10-24 12:53:47,524 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 146 transitions. [2024-10-24 12:53:47,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-24 12:53:47,526 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:53:47,526 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2024-10-24 12:53:47,544 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 12:53:47,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-10-24 12:53:47,727 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:53:47,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:53:47,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1986349374, now seen corresponding path program 1 times [2024-10-24 12:53:47,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:53:47,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951428325] [2024-10-24 12:53:47,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:53:47,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:53:47,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:48,159 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:53:48,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:48,174 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:53:48,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:48,189 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 12:53:48,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:48,204 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:53:48,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:48,209 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 12:53:48,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:48,232 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-24 12:53:48,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:48,239 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-24 12:53:48,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:48,276 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 12:53:48,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:48,282 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-24 12:53:48,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:48,288 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-10-24 12:53:48,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:53:48,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951428325] [2024-10-24 12:53:48,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951428325] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:53:48,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:53:48,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 12:53:48,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451043566] [2024-10-24 12:53:48,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:53:48,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 12:53:48,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:53:48,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 12:53:48,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-24 12:53:48,291 INFO L87 Difference]: Start difference. First operand 112 states and 146 transitions. Second operand has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 4 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2024-10-24 12:53:48,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:53:48,661 INFO L93 Difference]: Finished difference Result 196 states and 255 transitions. [2024-10-24 12:53:48,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 12:53:48,661 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 4 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 63 [2024-10-24 12:53:48,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:53:48,663 INFO L225 Difference]: With dead ends: 196 [2024-10-24 12:53:48,663 INFO L226 Difference]: Without dead ends: 110 [2024-10-24 12:53:48,664 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-10-24 12:53:48,665 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 83 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 12:53:48,665 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 271 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 12:53:48,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-10-24 12:53:48,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2024-10-24 12:53:48,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 71 states have (on average 1.2394366197183098) internal successors, (88), 72 states have internal predecessors, (88), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-10-24 12:53:48,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 143 transitions. [2024-10-24 12:53:48,674 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 143 transitions. Word has length 63 [2024-10-24 12:53:48,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:53:48,675 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 143 transitions. [2024-10-24 12:53:48,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 4 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2024-10-24 12:53:48,675 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 143 transitions. [2024-10-24 12:53:48,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-24 12:53:48,677 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:53:48,677 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2024-10-24 12:53:48,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 12:53:48,677 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:53:48,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:53:48,678 INFO L85 PathProgramCache]: Analyzing trace with hash -53160115, now seen corresponding path program 1 times [2024-10-24 12:53:48,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:53:48,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800564490] [2024-10-24 12:53:48,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:53:48,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:53:48,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:48,994 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:53:48,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:49,000 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:53:49,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:49,010 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 12:53:49,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:49,018 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:53:49,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:49,023 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 12:53:49,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:49,034 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-24 12:53:49,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:49,040 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-24 12:53:49,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:49,048 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-24 12:53:49,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:49,053 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 12:53:49,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:49,080 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-10-24 12:53:49,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:53:49,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800564490] [2024-10-24 12:53:49,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800564490] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:53:49,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:53:49,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 12:53:49,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957815176] [2024-10-24 12:53:49,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:53:49,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 12:53:49,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:53:49,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 12:53:49,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 12:53:49,083 INFO L87 Difference]: Start difference. First operand 110 states and 143 transitions. Second operand has 6 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-10-24 12:53:49,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:53:49,313 INFO L93 Difference]: Finished difference Result 191 states and 248 transitions. [2024-10-24 12:53:49,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 12:53:49,313 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 69 [2024-10-24 12:53:49,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:53:49,315 INFO L225 Difference]: With dead ends: 191 [2024-10-24 12:53:49,315 INFO L226 Difference]: Without dead ends: 112 [2024-10-24 12:53:49,316 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-10-24 12:53:49,316 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 57 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 12:53:49,316 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 219 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 12:53:49,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-10-24 12:53:49,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2024-10-24 12:53:49,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 72 states have (on average 1.2361111111111112) internal successors, (89), 74 states have internal predecessors, (89), 28 states have call successors, (28), 10 states have call predecessors, (28), 11 states have return successors, (28), 27 states have call predecessors, (28), 27 states have call successors, (28) [2024-10-24 12:53:49,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 145 transitions. [2024-10-24 12:53:49,330 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 145 transitions. Word has length 69 [2024-10-24 12:53:49,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:53:49,331 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 145 transitions. [2024-10-24 12:53:49,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-10-24 12:53:49,331 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 145 transitions. [2024-10-24 12:53:49,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-10-24 12:53:49,333 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:53:49,334 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2024-10-24 12:53:49,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 12:53:49,334 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:53:49,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:53:49,334 INFO L85 PathProgramCache]: Analyzing trace with hash 417618664, now seen corresponding path program 1 times [2024-10-24 12:53:49,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:53:49,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192181684] [2024-10-24 12:53:49,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:53:49,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:53:49,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:50,018 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:53:50,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:50,028 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:53:50,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:50,042 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 12:53:50,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:50,052 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:53:50,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:50,059 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 12:53:50,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:50,068 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-24 12:53:50,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:50,075 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-24 12:53:50,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:50,084 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-24 12:53:50,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:50,089 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 12:53:50,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:50,144 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-10-24 12:53:50,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:53:50,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192181684] [2024-10-24 12:53:50,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192181684] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:53:50,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:53:50,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-24 12:53:50,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747334265] [2024-10-24 12:53:50,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:53:50,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 12:53:50,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:53:50,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 12:53:50,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-24 12:53:50,147 INFO L87 Difference]: Start difference. First operand 112 states and 145 transitions. Second operand has 9 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2024-10-24 12:53:50,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:53:50,589 INFO L93 Difference]: Finished difference Result 123 states and 157 transitions. [2024-10-24 12:53:50,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 12:53:50,590 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) Word has length 71 [2024-10-24 12:53:50,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:53:50,591 INFO L225 Difference]: With dead ends: 123 [2024-10-24 12:53:50,591 INFO L226 Difference]: Without dead ends: 121 [2024-10-24 12:53:50,591 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-10-24 12:53:50,592 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 63 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 12:53:50,593 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 444 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 12:53:50,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-10-24 12:53:50,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 120. [2024-10-24 12:53:50,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 77 states have (on average 1.2207792207792207) internal successors, (94), 80 states have internal predecessors, (94), 29 states have call successors, (29), 11 states have call predecessors, (29), 13 states have return successors, (31), 28 states have call predecessors, (31), 28 states have call successors, (31) [2024-10-24 12:53:50,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 154 transitions. [2024-10-24 12:53:50,619 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 154 transitions. Word has length 71 [2024-10-24 12:53:50,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:53:50,619 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 154 transitions. [2024-10-24 12:53:50,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2024-10-24 12:53:50,620 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 154 transitions. [2024-10-24 12:53:50,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-10-24 12:53:50,621 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:53:50,621 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2024-10-24 12:53:50,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 12:53:50,621 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:53:50,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:53:50,621 INFO L85 PathProgramCache]: Analyzing trace with hash 89469024, now seen corresponding path program 1 times [2024-10-24 12:53:50,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:53:50,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126329940] [2024-10-24 12:53:50,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:53:50,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:53:50,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:52,226 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:53:52,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:52,233 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:53:52,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:52,254 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 12:53:52,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:52,289 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:53:52,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:52,295 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 12:53:52,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:52,309 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-24 12:53:52,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:52,317 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-24 12:53:52,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:52,331 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-24 12:53:52,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:52,340 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 12:53:52,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:52,533 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-10-24 12:53:52,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:53:52,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126329940] [2024-10-24 12:53:52,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126329940] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:53:52,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:53:52,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-10-24 12:53:52,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550165521] [2024-10-24 12:53:52,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:53:52,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-24 12:53:52,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:53:52,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-24 12:53:52,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2024-10-24 12:53:52,539 INFO L87 Difference]: Start difference. First operand 120 states and 154 transitions. Second operand has 16 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 states have internal predecessors, (37), 7 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2024-10-24 12:53:53,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:53:53,504 INFO L93 Difference]: Finished difference Result 242 states and 321 transitions. [2024-10-24 12:53:53,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-24 12:53:53,508 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 states have internal predecessors, (37), 7 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) Word has length 75 [2024-10-24 12:53:53,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:53:53,509 INFO L225 Difference]: With dead ends: 242 [2024-10-24 12:53:53,509 INFO L226 Difference]: Without dead ends: 158 [2024-10-24 12:53:53,510 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2024-10-24 12:53:53,511 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 155 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 1293 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 1368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-24 12:53:53,511 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 454 Invalid, 1368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1293 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-24 12:53:53,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2024-10-24 12:53:53,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 130. [2024-10-24 12:53:53,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 81 states have (on average 1.2098765432098766) internal successors, (98), 85 states have internal predecessors, (98), 34 states have call successors, (34), 12 states have call predecessors, (34), 14 states have return successors, (36), 32 states have call predecessors, (36), 33 states have call successors, (36) [2024-10-24 12:53:53,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 168 transitions. [2024-10-24 12:53:53,523 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 168 transitions. Word has length 75 [2024-10-24 12:53:53,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:53:53,524 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 168 transitions. [2024-10-24 12:53:53,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 states have internal predecessors, (37), 7 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2024-10-24 12:53:53,524 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 168 transitions. [2024-10-24 12:53:53,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-10-24 12:53:53,525 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:53:53,525 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2024-10-24 12:53:53,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 12:53:53,525 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:53:53,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:53:53,525 INFO L85 PathProgramCache]: Analyzing trace with hash 977057652, now seen corresponding path program 1 times [2024-10-24 12:53:53,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:53:53,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840542759] [2024-10-24 12:53:53,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:53:53,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:53:53,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:54,769 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:53:54,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:54,777 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:53:54,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:54,793 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 12:53:54,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:54,801 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:53:54,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:54,807 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 12:53:54,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:54,820 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-24 12:53:54,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:54,825 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-24 12:53:54,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:54,901 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-24 12:53:54,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:55,074 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 12:53:55,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:55,079 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 12:53:55,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:55,088 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-10-24 12:53:55,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:53:55,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840542759] [2024-10-24 12:53:55,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840542759] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:53:55,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318861704] [2024-10-24 12:53:55,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:53:55,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:53:55,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:53:55,090 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 12:53:55,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 12:53:55,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:53:55,506 INFO L255 TraceCheckSpWp]: Trace formula consists of 2624 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-24 12:53:55,511 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:53:55,610 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 1 [2024-10-24 12:53:55,878 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-24 12:53:55,878 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:53:55,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318861704] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:53:55,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:53:55,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [15] total 24 [2024-10-24 12:53:55,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610967631] [2024-10-24 12:53:55,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:53:55,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 12:53:55,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:53:55,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 12:53:55,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=494, Unknown=0, NotChecked=0, Total=552 [2024-10-24 12:53:55,880 INFO L87 Difference]: Start difference. First operand 130 states and 168 transitions. Second operand has 11 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 4 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-10-24 12:54:00,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:54:04,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:54:08,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:54:08,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:54:08,834 INFO L93 Difference]: Finished difference Result 253 states and 330 transitions. [2024-10-24 12:54:08,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 12:54:08,835 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 4 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 81 [2024-10-24 12:54:08,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:54:08,836 INFO L225 Difference]: With dead ends: 253 [2024-10-24 12:54:08,836 INFO L226 Difference]: Without dead ends: 142 [2024-10-24 12:54:08,838 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2024-10-24 12:54:08,838 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 98 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 15 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2024-10-24 12:54:08,840 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 591 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 394 Invalid, 3 Unknown, 0 Unchecked, 12.9s Time] [2024-10-24 12:54:08,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-10-24 12:54:08,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 137. [2024-10-24 12:54:08,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 86 states have (on average 1.197674418604651) internal successors, (103), 91 states have internal predecessors, (103), 34 states have call successors, (34), 13 states have call predecessors, (34), 16 states have return successors, (38), 32 states have call predecessors, (38), 33 states have call successors, (38) [2024-10-24 12:54:08,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 175 transitions. [2024-10-24 12:54:08,867 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 175 transitions. Word has length 81 [2024-10-24 12:54:08,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:54:08,867 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 175 transitions. [2024-10-24 12:54:08,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 4 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-10-24 12:54:08,868 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 175 transitions. [2024-10-24 12:54:08,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-10-24 12:54:08,870 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:54:08,870 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2024-10-24 12:54:08,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-24 12:54:09,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-24 12:54:09,071 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:54:09,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:54:09,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1319993900, now seen corresponding path program 1 times [2024-10-24 12:54:09,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:54:09,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078617520] [2024-10-24 12:54:09,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:54:09,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:54:09,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:09,885 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:54:09,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:09,890 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:54:09,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:09,899 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 12:54:09,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:09,905 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:54:09,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:09,910 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 12:54:09,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:09,976 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 12:54:09,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:10,022 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-24 12:54:10,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:10,028 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-24 12:54:10,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:10,036 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-24 12:54:10,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:10,043 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-24 12:54:10,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:10,051 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-10-24 12:54:10,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:54:10,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078617520] [2024-10-24 12:54:10,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078617520] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:54:10,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993075259] [2024-10-24 12:54:10,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:54:10,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:54:10,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:54:10,054 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 12:54:10,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 12:54:10,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:10,508 INFO L255 TraceCheckSpWp]: Trace formula consists of 2636 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-10-24 12:54:10,515 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:54:10,580 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 1 [2024-10-24 12:54:11,084 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-24 12:54:11,084 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:54:11,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993075259] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:54:11,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:54:11,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [10] total 21 [2024-10-24 12:54:11,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841871622] [2024-10-24 12:54:11,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:54:11,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-24 12:54:11,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:54:11,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-24 12:54:11,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=371, Unknown=0, NotChecked=0, Total=420 [2024-10-24 12:54:11,088 INFO L87 Difference]: Start difference. First operand 137 states and 175 transitions. Second operand has 13 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 5 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2024-10-24 12:54:15,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:54:19,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:54:23,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:54:24,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:54:24,184 INFO L93 Difference]: Finished difference Result 243 states and 312 transitions. [2024-10-24 12:54:24,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-24 12:54:24,185 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 5 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 85 [2024-10-24 12:54:24,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:54:24,187 INFO L225 Difference]: With dead ends: 243 [2024-10-24 12:54:24,187 INFO L226 Difference]: Without dead ends: 139 [2024-10-24 12:54:24,188 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 87 SyntacticMatches, 6 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2024-10-24 12:54:24,189 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 117 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 23 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2024-10-24 12:54:24,189 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 710 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 574 Invalid, 3 Unknown, 0 Unchecked, 13.0s Time] [2024-10-24 12:54:24,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-10-24 12:54:24,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 134. [2024-10-24 12:54:24,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 84 states have (on average 1.1904761904761905) internal successors, (100), 88 states have internal predecessors, (100), 34 states have call successors, (34), 13 states have call predecessors, (34), 15 states have return successors, (36), 32 states have call predecessors, (36), 33 states have call successors, (36) [2024-10-24 12:54:24,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 170 transitions. [2024-10-24 12:54:24,208 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 170 transitions. Word has length 85 [2024-10-24 12:54:24,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:54:24,209 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 170 transitions. [2024-10-24 12:54:24,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 5 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2024-10-24 12:54:24,209 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 170 transitions. [2024-10-24 12:54:24,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-10-24 12:54:24,210 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:54:24,211 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2024-10-24 12:54:24,227 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-24 12:54:24,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:54:24,413 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:54:24,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:54:24,414 INFO L85 PathProgramCache]: Analyzing trace with hash 943287028, now seen corresponding path program 1 times [2024-10-24 12:54:24,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:54:24,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375785066] [2024-10-24 12:54:24,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:54:24,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:54:24,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:25,086 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:54:25,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:25,091 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:54:25,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:25,104 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 12:54:25,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:25,110 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:54:25,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:25,115 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 12:54:25,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:25,178 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 12:54:25,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:25,220 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-24 12:54:25,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:25,225 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-24 12:54:25,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:25,233 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 12:54:25,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:25,240 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-24 12:54:25,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:25,247 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-10-24 12:54:25,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:54:25,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375785066] [2024-10-24 12:54:25,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375785066] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:54:25,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030211667] [2024-10-24 12:54:25,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:54:25,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:54:25,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:54:25,250 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 12:54:25,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 12:54:25,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:54:25,661 INFO L255 TraceCheckSpWp]: Trace formula consists of 2648 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-10-24 12:54:25,669 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:54:25,723 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 1 [2024-10-24 12:54:26,143 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 35 treesize of output 23 [2024-10-24 12:54:26,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2024-10-24 12:54:26,365 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-24 12:54:26,365 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:54:26,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030211667] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:54:26,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:54:26,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [10] total 24 [2024-10-24 12:54:26,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511248990] [2024-10-24 12:54:26,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:54:26,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-24 12:54:26,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:54:26,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-24 12:54:26,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=495, Unknown=0, NotChecked=0, Total=552 [2024-10-24 12:54:26,367 INFO L87 Difference]: Start difference. First operand 134 states and 170 transitions. Second operand has 16 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 13 states have internal predecessors, (50), 6 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2024-10-24 12:54:30,660 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:54:34,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:54:39,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:54:43,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:54:47,131 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:54:51,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:54:55,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:54:59,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:55:03,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:55:04,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:55:04,047 INFO L93 Difference]: Finished difference Result 259 states and 325 transitions. [2024-10-24 12:55:04,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-24 12:55:04,047 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 13 states have internal predecessors, (50), 6 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) Word has length 89 [2024-10-24 12:55:04,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:55:04,049 INFO L225 Difference]: With dead ends: 259 [2024-10-24 12:55:04,049 INFO L226 Difference]: Without dead ends: 175 [2024-10-24 12:55:04,049 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 86 SyntacticMatches, 9 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=126, Invalid=996, Unknown=0, NotChecked=0, Total=1122 [2024-10-24 12:55:04,050 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 172 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 75 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.5s IncrementalHoareTripleChecker+Time [2024-10-24 12:55:04,050 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 991 Invalid, 986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 902 Invalid, 9 Unknown, 0 Unchecked, 37.5s Time] [2024-10-24 12:55:04,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-10-24 12:55:04,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 158. [2024-10-24 12:55:04,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 106 states have (on average 1.2075471698113207) internal successors, (128), 110 states have internal predecessors, (128), 34 states have call successors, (34), 15 states have call predecessors, (34), 17 states have return successors, (36), 32 states have call predecessors, (36), 33 states have call successors, (36) [2024-10-24 12:55:04,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 198 transitions. [2024-10-24 12:55:04,064 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 198 transitions. Word has length 89 [2024-10-24 12:55:04,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:55:04,065 INFO L471 AbstractCegarLoop]: Abstraction has 158 states and 198 transitions. [2024-10-24 12:55:04,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 13 states have internal predecessors, (50), 6 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2024-10-24 12:55:04,065 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 198 transitions. [2024-10-24 12:55:04,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-10-24 12:55:04,066 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:55:04,066 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2024-10-24 12:55:04,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-24 12:55:04,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:55:04,267 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:55:04,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:55:04,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1644351606, now seen corresponding path program 1 times [2024-10-24 12:55:04,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:55:04,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269570284] [2024-10-24 12:55:04,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:55:04,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:55:04,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:04,860 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:55:04,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:04,864 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:55:04,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:04,879 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 12:55:04,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:04,884 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:55:04,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:04,888 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 12:55:04,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:04,960 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 12:55:04,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:04,966 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-24 12:55:04,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:04,971 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-24 12:55:04,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:04,978 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 12:55:04,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:04,983 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-24 12:55:04,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:04,989 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-10-24 12:55:04,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:55:04,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269570284] [2024-10-24 12:55:04,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269570284] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:55:04,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602622987] [2024-10-24 12:55:04,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:55:04,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:55:04,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:55:04,992 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 12:55:04,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 12:55:05,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:05,373 INFO L255 TraceCheckSpWp]: Trace formula consists of 2643 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-24 12:55:05,376 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:55:05,383 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 [2024-10-24 12:55:05,480 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-10-24 12:55:05,480 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:55:05,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602622987] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:55:05,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:55:05,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2024-10-24 12:55:05,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311805551] [2024-10-24 12:55:05,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:55:05,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 12:55:05,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:55:05,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 12:55:05,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-10-24 12:55:05,481 INFO L87 Difference]: Start difference. First operand 158 states and 198 transitions. Second operand has 6 states, 5 states have (on average 8.4) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-24 12:55:05,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:55:05,595 INFO L93 Difference]: Finished difference Result 249 states and 314 transitions. [2024-10-24 12:55:05,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 12:55:05,596 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 89 [2024-10-24 12:55:05,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:55:05,597 INFO L225 Difference]: With dead ends: 249 [2024-10-24 12:55:05,598 INFO L226 Difference]: Without dead ends: 161 [2024-10-24 12:55:05,598 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-10-24 12:55:05,599 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 14 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 12:55:05,599 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 478 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 12:55:05,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-10-24 12:55:05,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 156. [2024-10-24 12:55:05,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 104 states have (on average 1.1923076923076923) internal successors, (124), 108 states have internal predecessors, (124), 34 states have call successors, (34), 15 states have call predecessors, (34), 17 states have return successors, (36), 32 states have call predecessors, (36), 33 states have call successors, (36) [2024-10-24 12:55:05,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 194 transitions. [2024-10-24 12:55:05,616 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 194 transitions. Word has length 89 [2024-10-24 12:55:05,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:55:05,617 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 194 transitions. [2024-10-24 12:55:05,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-10-24 12:55:05,617 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 194 transitions. [2024-10-24 12:55:05,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-24 12:55:05,618 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:55:05,618 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2024-10-24 12:55:05,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-24 12:55:05,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:55:05,818 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:55:05,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:55:05,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1791115055, now seen corresponding path program 1 times [2024-10-24 12:55:05,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:55:05,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769453598] [2024-10-24 12:55:05,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:55:05,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:55:05,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:06,463 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:55:06,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:06,468 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:55:06,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:06,478 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 12:55:06,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:06,504 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:55:06,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:06,508 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 12:55:06,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:06,524 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 12:55:06,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:06,529 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-24 12:55:06,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:06,533 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-24 12:55:06,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:06,541 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 12:55:06,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:06,545 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-24 12:55:06,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:06,627 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-10-24 12:55:06,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:55:06,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769453598] [2024-10-24 12:55:06,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769453598] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:55:06,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:55:06,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-24 12:55:06,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801948033] [2024-10-24 12:55:06,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:55:06,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 12:55:06,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:55:06,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 12:55:06,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-10-24 12:55:06,629 INFO L87 Difference]: Start difference. First operand 156 states and 194 transitions. Second operand has 11 states, 9 states have (on average 4.888888888888889) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2024-10-24 12:55:07,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:55:07,119 INFO L93 Difference]: Finished difference Result 169 states and 208 transitions. [2024-10-24 12:55:07,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 12:55:07,120 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 4.888888888888889) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 91 [2024-10-24 12:55:07,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:55:07,121 INFO L225 Difference]: With dead ends: 169 [2024-10-24 12:55:07,121 INFO L226 Difference]: Without dead ends: 167 [2024-10-24 12:55:07,121 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-10-24 12:55:07,121 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 62 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 12:55:07,122 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 560 Invalid, 817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 12:55:07,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-10-24 12:55:07,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 166. [2024-10-24 12:55:07,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 111 states have (on average 1.1801801801801801) internal successors, (131), 116 states have internal predecessors, (131), 35 states have call successors, (35), 16 states have call predecessors, (35), 19 states have return successors, (39), 33 states have call predecessors, (39), 34 states have call successors, (39) [2024-10-24 12:55:07,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 205 transitions. [2024-10-24 12:55:07,135 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 205 transitions. Word has length 91 [2024-10-24 12:55:07,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:55:07,135 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 205 transitions. [2024-10-24 12:55:07,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 4.888888888888889) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2024-10-24 12:55:07,135 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 205 transitions. [2024-10-24 12:55:07,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-10-24 12:55:07,136 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:55:07,136 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2024-10-24 12:55:07,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 12:55:07,137 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:55:07,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:55:07,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1398088045, now seen corresponding path program 1 times [2024-10-24 12:55:07,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:55:07,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381439259] [2024-10-24 12:55:07,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:55:07,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:55:07,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:08,013 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:55:08,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:08,017 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:55:08,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:08,028 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 12:55:08,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:08,033 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:55:08,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:08,036 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 12:55:08,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:08,043 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 12:55:08,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:08,047 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-24 12:55:08,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:08,050 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-24 12:55:08,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:08,057 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-24 12:55:08,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:08,060 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-24 12:55:08,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:08,197 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-10-24 12:55:08,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:55:08,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381439259] [2024-10-24 12:55:08,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381439259] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:55:08,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:55:08,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-10-24 12:55:08,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177828566] [2024-10-24 12:55:08,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:55:08,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-24 12:55:08,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:55:08,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-24 12:55:08,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2024-10-24 12:55:08,199 INFO L87 Difference]: Start difference. First operand 166 states and 205 transitions. Second operand has 14 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2024-10-24 12:55:08,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:55:08,880 INFO L93 Difference]: Finished difference Result 172 states and 210 transitions. [2024-10-24 12:55:08,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-24 12:55:08,881 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 91 [2024-10-24 12:55:08,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:55:08,882 INFO L225 Difference]: With dead ends: 172 [2024-10-24 12:55:08,882 INFO L226 Difference]: Without dead ends: 170 [2024-10-24 12:55:08,883 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=128, Invalid=684, Unknown=0, NotChecked=0, Total=812 [2024-10-24 12:55:08,883 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 75 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 12:55:08,883 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 672 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 992 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 12:55:08,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-10-24 12:55:08,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 160. [2024-10-24 12:55:08,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 107 states have (on average 1.1869158878504673) internal successors, (127), 111 states have internal predecessors, (127), 34 states have call successors, (34), 16 states have call predecessors, (34), 18 states have return successors, (36), 32 states have call predecessors, (36), 33 states have call successors, (36) [2024-10-24 12:55:08,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 197 transitions. [2024-10-24 12:55:08,896 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 197 transitions. Word has length 91 [2024-10-24 12:55:08,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:55:08,896 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 197 transitions. [2024-10-24 12:55:08,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 11 states have internal predecessors, (44), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2024-10-24 12:55:08,897 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 197 transitions. [2024-10-24 12:55:08,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-10-24 12:55:08,897 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:55:08,898 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:55:08,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 12:55:08,898 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:55:08,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:55:08,898 INFO L85 PathProgramCache]: Analyzing trace with hash -379811782, now seen corresponding path program 1 times [2024-10-24 12:55:08,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:55:08,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963358409] [2024-10-24 12:55:08,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:55:08,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:55:08,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:09,501 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:55:09,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:09,505 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:55:09,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:09,511 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 12:55:09,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:09,516 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:55:09,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:09,519 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 12:55:09,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:09,574 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 12:55:09,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:09,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-24 12:55:09,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:09,635 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:55:09,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:09,641 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-24 12:55:09,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:09,645 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 12:55:09,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:09,649 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-24 12:55:09,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:09,652 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-24 12:55:09,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:09,660 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 8 proven. 11 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-10-24 12:55:09,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:55:09,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963358409] [2024-10-24 12:55:09,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963358409] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:55:09,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291574796] [2024-10-24 12:55:09,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:55:09,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:55:09,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:55:09,662 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 12:55:09,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 12:55:10,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:10,043 INFO L255 TraceCheckSpWp]: Trace formula consists of 2666 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 12:55:10,046 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:55:10,116 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-24 12:55:10,116 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:55:10,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291574796] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:55:10,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:55:10,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2024-10-24 12:55:10,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275022112] [2024-10-24 12:55:10,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:55:10,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 12:55:10,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:55:10,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 12:55:10,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2024-10-24 12:55:10,118 INFO L87 Difference]: Start difference. First operand 160 states and 197 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-24 12:55:10,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:55:10,427 INFO L93 Difference]: Finished difference Result 323 states and 410 transitions. [2024-10-24 12:55:10,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:55:10,427 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 102 [2024-10-24 12:55:10,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:55:10,429 INFO L225 Difference]: With dead ends: 323 [2024-10-24 12:55:10,430 INFO L226 Difference]: Without dead ends: 186 [2024-10-24 12:55:10,431 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2024-10-24 12:55:10,431 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 13 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 12:55:10,432 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 451 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 12:55:10,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2024-10-24 12:55:10,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 170. [2024-10-24 12:55:10,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 117 states have (on average 1.188034188034188) internal successors, (139), 121 states have internal predecessors, (139), 34 states have call successors, (34), 16 states have call predecessors, (34), 18 states have return successors, (36), 32 states have call predecessors, (36), 33 states have call successors, (36) [2024-10-24 12:55:10,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 209 transitions. [2024-10-24 12:55:10,451 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 209 transitions. Word has length 102 [2024-10-24 12:55:10,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:55:10,451 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 209 transitions. [2024-10-24 12:55:10,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-24 12:55:10,452 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 209 transitions. [2024-10-24 12:55:10,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-10-24 12:55:10,452 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:55:10,452 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:55:10,472 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-24 12:55:10,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:55:10,653 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:55:10,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:55:10,653 INFO L85 PathProgramCache]: Analyzing trace with hash 45065212, now seen corresponding path program 1 times [2024-10-24 12:55:10,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:55:10,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108905235] [2024-10-24 12:55:10,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:55:10,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:55:10,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:11,231 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:55:11,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:11,234 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:55:11,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:11,241 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 12:55:11,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:11,245 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:55:11,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:11,248 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 12:55:11,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:11,290 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-24 12:55:11,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:11,333 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-24 12:55:11,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:11,346 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:55:11,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:11,352 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-24 12:55:11,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:11,356 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 12:55:11,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:11,360 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-24 12:55:11,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:11,363 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-24 12:55:11,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:11,370 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 8 proven. 11 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-10-24 12:55:11,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:55:11,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108905235] [2024-10-24 12:55:11,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108905235] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:55:11,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688016698] [2024-10-24 12:55:11,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:55:11,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:55:11,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:55:11,373 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 12:55:11,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-24 12:55:11,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:11,760 INFO L255 TraceCheckSpWp]: Trace formula consists of 2651 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-24 12:55:11,763 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:55:11,798 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-24 12:55:11,798 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:55:11,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688016698] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:55:11,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:55:11,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 13 [2024-10-24 12:55:11,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624825244] [2024-10-24 12:55:11,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:55:11,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 12:55:11,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:55:11,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 12:55:11,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-10-24 12:55:11,800 INFO L87 Difference]: Start difference. First operand 170 states and 209 transitions. Second operand has 9 states, 7 states have (on average 8.571428571428571) internal successors, (60), 8 states have internal predecessors, (60), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-24 12:55:11,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:55:11,934 INFO L93 Difference]: Finished difference Result 325 states and 402 transitions. [2024-10-24 12:55:11,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 12:55:11,935 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 8.571428571428571) internal successors, (60), 8 states have internal predecessors, (60), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 102 [2024-10-24 12:55:11,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:55:11,936 INFO L225 Difference]: With dead ends: 325 [2024-10-24 12:55:11,936 INFO L226 Difference]: Without dead ends: 178 [2024-10-24 12:55:11,937 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-10-24 12:55:11,937 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 0 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 952 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 12:55:11,937 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 952 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 12:55:11,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-10-24 12:55:11,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 174. [2024-10-24 12:55:11,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 120 states have (on average 1.1833333333333333) internal successors, (142), 125 states have internal predecessors, (142), 34 states have call successors, (34), 16 states have call predecessors, (34), 19 states have return successors, (38), 32 states have call predecessors, (38), 33 states have call successors, (38) [2024-10-24 12:55:11,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 214 transitions. [2024-10-24 12:55:11,951 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 214 transitions. Word has length 102 [2024-10-24 12:55:11,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:55:11,951 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 214 transitions. [2024-10-24 12:55:11,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 8.571428571428571) internal successors, (60), 8 states have internal predecessors, (60), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-24 12:55:11,953 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 214 transitions. [2024-10-24 12:55:11,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-10-24 12:55:11,954 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:55:11,954 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:55:11,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-24 12:55:12,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:55:12,155 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:55:12,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:55:12,156 INFO L85 PathProgramCache]: Analyzing trace with hash -251852671, now seen corresponding path program 1 times [2024-10-24 12:55:12,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:55:12,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140216454] [2024-10-24 12:55:12,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:55:12,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:55:12,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:12,298 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:55:12,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:12,301 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 12:55:12,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:12,307 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-24 12:55:12,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:12,311 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:55:12,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:12,314 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 12:55:12,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:12,334 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-24 12:55:12,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:12,347 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-24 12:55:12,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:12,361 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:55:12,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:12,367 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-24 12:55:12,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:12,370 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-24 12:55:12,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:12,375 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-24 12:55:12,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:12,378 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-24 12:55:12,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:12,385 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-10-24 12:55:12,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:55:12,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140216454] [2024-10-24 12:55:12,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140216454] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:55:12,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57134428] [2024-10-24 12:55:12,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:55:12,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:55:12,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:55:12,387 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 12:55:12,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-24 12:55:12,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:55:12,764 INFO L255 TraceCheckSpWp]: Trace formula consists of 2656 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 12:55:12,767 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:55:12,772 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-10-24 12:55:12,773 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:55:12,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57134428] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:55:12,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:55:12,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2024-10-24 12:55:12,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946383901] [2024-10-24 12:55:12,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:55:12,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 12:55:12,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:55:12,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 12:55:12,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 12:55:12,774 INFO L87 Difference]: Start difference. First operand 174 states and 214 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-24 12:55:12,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:55:12,837 INFO L93 Difference]: Finished difference Result 330 states and 415 transitions. [2024-10-24 12:55:12,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 12:55:12,838 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 104 [2024-10-24 12:55:12,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:55:12,839 INFO L225 Difference]: With dead ends: 330 [2024-10-24 12:55:12,839 INFO L226 Difference]: Without dead ends: 179 [2024-10-24 12:55:12,840 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 12:55:12,840 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 1 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 12:55:12,840 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 379 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 12:55:12,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-10-24 12:55:12,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 178. [2024-10-24 12:55:12,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 124 states have (on average 1.1774193548387097) internal successors, (146), 129 states have internal predecessors, (146), 34 states have call successors, (34), 16 states have call predecessors, (34), 19 states have return successors, (38), 32 states have call predecessors, (38), 33 states have call successors, (38) [2024-10-24 12:55:12,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 218 transitions. [2024-10-24 12:55:12,855 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 218 transitions. Word has length 104 [2024-10-24 12:55:12,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:55:12,855 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 218 transitions. [2024-10-24 12:55:12,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-10-24 12:55:12,856 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 218 transitions. [2024-10-24 12:55:12,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-10-24 12:55:12,860 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:55:12,861 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]