./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_buf_reserve_relative_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_buf_reserve_relative_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 da48e5de3ccd5190fb3d3934a3d9d423de1f83d4587f9dc2fa1f3f18a9362190 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 12:48:48,567 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 12:48:48,635 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-10-24 12:48:48,642 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 12:48:48,642 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 12:48:48,671 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 12:48:48,672 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 12:48:48,672 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 12:48:48,673 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 12:48:48,675 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 12:48:48,675 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 12:48:48,675 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 12:48:48,676 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 12:48:48,678 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 12:48:48,678 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 12:48:48,678 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 12:48:48,678 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 12:48:48,679 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 12:48:48,679 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 12:48:48,679 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 12:48:48,679 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 12:48:48,682 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 12:48:48,682 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 12:48:48,682 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 12:48:48,682 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 12:48:48,683 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 12:48:48,683 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 12:48:48,683 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 12:48:48,683 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 12:48:48,684 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:48:48,684 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 12:48:48,684 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 12:48:48,684 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 12:48:48,684 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 12:48:48,684 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 12:48:48,685 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 12:48:48,685 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 12:48:48,685 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 12:48:48,686 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 12:48:48,686 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da48e5de3ccd5190fb3d3934a3d9d423de1f83d4587f9dc2fa1f3f18a9362190 [2024-10-24 12:48:48,934 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 12:48:48,959 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 12:48:48,962 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 12:48:48,963 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 12:48:48,964 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 12:48:48,965 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i [2024-10-24 12:48:50,468 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 12:48:50,973 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 12:48:50,974 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_reserve_relative_harness.i [2024-10-24 12:48:51,069 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04f3106d0/714085f82d9e4b70ab6ab8ae03d53c47/FLAG7d943a6b7 [2024-10-24 12:48:51,535 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04f3106d0/714085f82d9e4b70ab6ab8ae03d53c47 [2024-10-24 12:48:51,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 12:48:51,539 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 12:48:51,540 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 12:48:51,541 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 12:48:51,547 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 12:48:51,548 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:48:51" (1/1) ... [2024-10-24 12:48:51,549 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fca826d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:48:51, skipping insertion in model container [2024-10-24 12:48:51,549 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:48:51" (1/1) ... [2024-10-24 12:48:51,642 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 12:48:51,937 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_buf_reserve_relative_harness.i[4503,4516] [2024-10-24 12:48:51,945 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_buf_reserve_relative_harness.i[4563,4576] [2024-10-24 12:48:52,662 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:48:52,663 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:48:52,663 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:48:52,664 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:48:52,665 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:48:52,676 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:48:52,677 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:48:52,679 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:48:52,679 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:48:53,104 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:48:53,108 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:48:53,227 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:48:53,227 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:48:53,306 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:48:53,361 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 12:48:53,375 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_buf_reserve_relative_harness.i[4503,4516] [2024-10-24 12:48:53,379 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_buf_reserve_relative_harness.i[4563,4576] [2024-10-24 12:48:53,424 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:48:53,424 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:48:53,425 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:48:53,425 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:48:53,426 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:48:53,435 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:48:53,435 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:48:53,436 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:48:53,436 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:48:53,613 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:48:53,613 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:48:53,652 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8097] [2024-10-24 12:48:53,654 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:48:53,654 WARN L1660 CHandler]: Possible shadowing of function index [2024-10-24 12:48:53,665 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8583-8594] [2024-10-24 12:48:53,677 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:48:53,959 INFO L204 MainTranslator]: Completed translation [2024-10-24 12:48:53,963 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:48:53 WrapperNode [2024-10-24 12:48:53,964 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 12:48:53,965 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 12:48:53,965 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 12:48:53,965 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 12:48:53,974 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:48:53" (1/1) ... [2024-10-24 12:48:54,079 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:48:53" (1/1) ... [2024-10-24 12:48:54,213 INFO L138 Inliner]: procedures = 681, calls = 2487, calls flagged for inlining = 58, calls inlined = 13, statements flattened = 1021 [2024-10-24 12:48:54,216 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 12:48:54,217 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 12:48:54,217 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 12:48:54,217 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 12:48:54,228 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:48:53" (1/1) ... [2024-10-24 12:48:54,229 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:48:53" (1/1) ... [2024-10-24 12:48:54,241 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:48:53" (1/1) ... [2024-10-24 12:48:54,303 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2024-10-24 12:48:54,303 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:48:53" (1/1) ... [2024-10-24 12:48:54,304 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:48:53" (1/1) ... [2024-10-24 12:48:54,356 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:48:53" (1/1) ... [2024-10-24 12:48:54,363 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:48:53" (1/1) ... [2024-10-24 12:48:54,378 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:48:53" (1/1) ... [2024-10-24 12:48:54,387 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:48:53" (1/1) ... [2024-10-24 12:48:54,401 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 12:48:54,402 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 12:48:54,402 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 12:48:54,402 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 12:48:54,403 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:48:53" (1/1) ... [2024-10-24 12:48:54,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:48:54,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:48:54,448 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 12:48:54,458 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 12:48:54,510 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2024-10-24 12:48:54,511 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2024-10-24 12:48:54,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-24 12:48:54,512 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-10-24 12:48:54,513 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-10-24 12:48:54,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-24 12:48:54,513 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-10-24 12:48:54,513 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-10-24 12:48:54,513 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-24 12:48:54,513 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-24 12:48:54,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 12:48:54,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 12:48:54,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-10-24 12:48:54,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 12:48:54,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 12:48:54,514 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-10-24 12:48:54,514 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-10-24 12:48:54,514 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_realloc [2024-10-24 12:48:54,515 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_realloc [2024-10-24 12:48:54,515 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2024-10-24 12:48:54,515 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2024-10-24 12:48:54,516 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-24 12:48:54,516 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-24 12:48:54,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-24 12:48:54,516 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2024-10-24 12:48:54,516 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2024-10-24 12:48:54,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-10-24 12:48:54,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-10-24 12:48:54,517 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-10-24 12:48:54,517 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-10-24 12:48:54,517 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2024-10-24 12:48:54,517 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2024-10-24 12:48:54,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-24 12:48:54,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-24 12:48:54,838 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 12:48:54,841 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 12:48:55,851 INFO L? ?]: Removed 127 outVars from TransFormulas that were not future-live. [2024-10-24 12:48:55,852 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 12:48:56,026 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 12:48:56,027 INFO L314 CfgBuilder]: Removed 8 assume(true) statements. [2024-10-24 12:48:56,027 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:48:56 BoogieIcfgContainer [2024-10-24 12:48:56,027 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 12:48:56,030 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 12:48:56,031 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 12:48:56,034 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 12:48:56,034 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:48:51" (1/3) ... [2024-10-24 12:48:56,035 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c72292e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:48:56, skipping insertion in model container [2024-10-24 12:48:56,035 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:48:53" (2/3) ... [2024-10-24 12:48:56,036 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c72292e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:48:56, skipping insertion in model container [2024-10-24 12:48:56,036 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:48:56" (3/3) ... [2024-10-24 12:48:56,038 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_reserve_relative_harness.i [2024-10-24 12:48:56,065 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 12:48:56,066 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 12:48:56,136 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 12:48:56,145 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;@7358c3bf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 12:48:56,147 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 12:48:56,151 INFO L276 IsEmpty]: Start isEmpty. Operand has 145 states, 96 states have (on average 1.3645833333333333) internal successors, (131), 95 states have internal predecessors, (131), 38 states have call successors, (38), 11 states have call predecessors, (38), 11 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-10-24 12:48:56,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-24 12:48:56,160 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:48:56,162 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:48:56,165 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:48:56,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:48:56,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1998333659, now seen corresponding path program 1 times [2024-10-24 12:48:56,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:48:56,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647496401] [2024-10-24 12:48:56,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:48:56,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:48:56,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:48:56,745 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:48:56,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:48:56,790 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-24 12:48:56,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:48:56,818 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:48:56,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:48:56,851 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-24 12:48:56,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:48:56,863 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 12:48:56,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:48:56,877 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-24 12:48:56,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:48:56,889 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 12:48:56,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:48:56,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647496401] [2024-10-24 12:48:56,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647496401] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:48:56,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:48:56,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 12:48:56,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680645021] [2024-10-24 12:48:56,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:48:56,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 12:48:56,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:48:56,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 12:48:56,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 12:48:56,926 INFO L87 Difference]: Start difference. First operand has 145 states, 96 states have (on average 1.3645833333333333) internal successors, (131), 95 states have internal predecessors, (131), 38 states have call successors, (38), 11 states have call predecessors, (38), 11 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-24 12:48:57,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:48:57,565 INFO L93 Difference]: Finished difference Result 289 states and 424 transitions. [2024-10-24 12:48:57,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 12:48:57,568 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 39 [2024-10-24 12:48:57,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:48:57,578 INFO L225 Difference]: With dead ends: 289 [2024-10-24 12:48:57,578 INFO L226 Difference]: Without dead ends: 151 [2024-10-24 12:48:57,582 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 12:48:57,587 INFO L432 NwaCegarLoop]: 117 mSDtfsCounter, 120 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-24 12:48:57,590 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 222 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-24 12:48:57,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-10-24 12:48:57,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 143. [2024-10-24 12:48:57,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 93 states have (on average 1.2903225806451613) internal successors, (120), 94 states have internal predecessors, (120), 38 states have call successors, (38), 11 states have call predecessors, (38), 11 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-10-24 12:48:57,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 195 transitions. [2024-10-24 12:48:57,648 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 195 transitions. Word has length 39 [2024-10-24 12:48:57,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:48:57,649 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 195 transitions. [2024-10-24 12:48:57,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 2 states have internal predecessors, (23), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-24 12:48:57,650 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 195 transitions. [2024-10-24 12:48:57,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-24 12:48:57,652 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:48:57,652 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:48:57,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 12:48:57,653 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:48:57,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:48:57,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1931498597, now seen corresponding path program 1 times [2024-10-24 12:48:57,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:48:57,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296994765] [2024-10-24 12:48:57,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:48:57,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:48:57,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:48:58,241 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:48:58,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:48:58,261 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-24 12:48:58,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:48:58,280 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:48:58,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:48:58,288 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-24 12:48:58,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:48:58,342 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-24 12:48:58,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:48:58,366 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-24 12:48:58,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:48:58,375 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 12:48:58,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:48:58,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296994765] [2024-10-24 12:48:58,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296994765] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:48:58,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:48:58,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 12:48:58,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532373465] [2024-10-24 12:48:58,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:48:58,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 12:48:58,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:48:58,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 12:48:58,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 12:48:58,381 INFO L87 Difference]: Start difference. First operand 143 states and 195 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-10-24 12:48:59,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:48:59,149 INFO L93 Difference]: Finished difference Result 283 states and 389 transitions. [2024-10-24 12:48:59,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 12:48:59,150 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 39 [2024-10-24 12:48:59,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:48:59,152 INFO L225 Difference]: With dead ends: 283 [2024-10-24 12:48:59,152 INFO L226 Difference]: Without dead ends: 153 [2024-10-24 12:48:59,156 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-24 12:48:59,159 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 176 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-24 12:48:59,159 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 390 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-24 12:48:59,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-10-24 12:48:59,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 145. [2024-10-24 12:48:59,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 94 states have (on average 1.2872340425531914) internal successors, (121), 96 states have internal predecessors, (121), 38 states have call successors, (38), 11 states have call predecessors, (38), 12 states have return successors, (43), 37 states have call predecessors, (43), 37 states have call successors, (43) [2024-10-24 12:48:59,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 202 transitions. [2024-10-24 12:48:59,191 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 202 transitions. Word has length 39 [2024-10-24 12:48:59,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:48:59,192 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 202 transitions. [2024-10-24 12:48:59,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-10-24 12:48:59,193 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 202 transitions. [2024-10-24 12:48:59,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-10-24 12:48:59,195 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:48:59,195 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:48:59,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 12:48:59,195 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:48:59,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:48:59,196 INFO L85 PathProgramCache]: Analyzing trace with hash -293559184, now seen corresponding path program 1 times [2024-10-24 12:48:59,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:48:59,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714455853] [2024-10-24 12:48:59,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:48:59,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:48:59,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:48:59,649 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:48:59,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:48:59,667 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-24 12:48:59,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:48:59,683 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:48:59,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:48:59,692 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-24 12:48:59,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:48:59,708 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-24 12:48:59,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:48:59,725 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 12:48:59,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:48:59,752 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 12:48:59,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:48:59,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714455853] [2024-10-24 12:48:59,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714455853] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:48:59,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:48:59,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 12:48:59,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296819050] [2024-10-24 12:48:59,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:48:59,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 12:48:59,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:48:59,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 12:48:59,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-24 12:48:59,755 INFO L87 Difference]: Start difference. First operand 145 states and 202 transitions. Second operand has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2024-10-24 12:49:00,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:49:00,710 INFO L93 Difference]: Finished difference Result 189 states and 254 transitions. [2024-10-24 12:49:00,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 12:49:00,711 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 45 [2024-10-24 12:49:00,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:49:00,713 INFO L225 Difference]: With dead ends: 189 [2024-10-24 12:49:00,713 INFO L226 Difference]: Without dead ends: 155 [2024-10-24 12:49:00,714 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-10-24 12:49:00,715 INFO L432 NwaCegarLoop]: 113 mSDtfsCounter, 120 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-24 12:49:00,715 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 536 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-24 12:49:00,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-10-24 12:49:00,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 147. [2024-10-24 12:49:00,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 96 states have (on average 1.28125) internal successors, (123), 98 states have internal predecessors, (123), 38 states have call successors, (38), 11 states have call predecessors, (38), 12 states have return successors, (43), 37 states have call predecessors, (43), 37 states have call successors, (43) [2024-10-24 12:49:00,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 204 transitions. [2024-10-24 12:49:00,734 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 204 transitions. Word has length 45 [2024-10-24 12:49:00,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:49:00,734 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 204 transitions. [2024-10-24 12:49:00,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2024-10-24 12:49:00,735 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 204 transitions. [2024-10-24 12:49:00,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-24 12:49:00,738 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:49:00,738 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:49:00,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 12:49:00,739 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:49:00,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:49:00,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1084662000, now seen corresponding path program 1 times [2024-10-24 12:49:00,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:49:00,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941038722] [2024-10-24 12:49:00,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:49:00,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:49:00,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:01,165 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:49:01,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:01,180 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-24 12:49:01,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:01,193 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:49:01,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:01,201 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-24 12:49:01,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:01,216 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-24 12:49:01,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:01,227 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-24 12:49:01,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:01,282 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-24 12:49:01,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:01,295 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 12:49:01,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:49:01,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941038722] [2024-10-24 12:49:01,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941038722] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:49:01,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:49:01,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 12:49:01,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219350118] [2024-10-24 12:49:01,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:49:01,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 12:49:01,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:49:01,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 12:49:01,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-24 12:49:01,298 INFO L87 Difference]: Start difference. First operand 147 states and 204 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 6 states have internal predecessors, (34), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2024-10-24 12:49:02,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:49:02,140 INFO L93 Difference]: Finished difference Result 282 states and 386 transitions. [2024-10-24 12:49:02,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 12:49:02,141 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 6 states have internal predecessors, (34), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 52 [2024-10-24 12:49:02,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:49:02,144 INFO L225 Difference]: With dead ends: 282 [2024-10-24 12:49:02,144 INFO L226 Difference]: Without dead ends: 156 [2024-10-24 12:49:02,146 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-10-24 12:49:02,147 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 183 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-24 12:49:02,148 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 415 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-24 12:49:02,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2024-10-24 12:49:02,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 147. [2024-10-24 12:49:02,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 96 states have (on average 1.28125) internal successors, (123), 98 states have internal predecessors, (123), 38 states have call successors, (38), 11 states have call predecessors, (38), 12 states have return successors, (41), 37 states have call predecessors, (41), 37 states have call successors, (41) [2024-10-24 12:49:02,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 202 transitions. [2024-10-24 12:49:02,162 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 202 transitions. Word has length 52 [2024-10-24 12:49:02,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:49:02,163 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 202 transitions. [2024-10-24 12:49:02,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 6 states have internal predecessors, (34), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2024-10-24 12:49:02,163 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 202 transitions. [2024-10-24 12:49:02,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-10-24 12:49:02,165 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:49:02,165 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 12:49:02,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 12:49:02,165 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:49:02,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:49:02,166 INFO L85 PathProgramCache]: Analyzing trace with hash -2115528175, now seen corresponding path program 1 times [2024-10-24 12:49:02,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:49:02,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977113103] [2024-10-24 12:49:02,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:49:02,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:49:02,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:03,099 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:49:03,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:03,120 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-24 12:49:03,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:03,129 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:49:03,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:03,138 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-24 12:49:03,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:03,154 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-24 12:49:03,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:03,170 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 12:49:03,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:03,176 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-24 12:49:03,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:03,266 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-24 12:49:03,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:49:03,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977113103] [2024-10-24 12:49:03,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977113103] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:49:03,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:49:03,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-24 12:49:03,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146884332] [2024-10-24 12:49:03,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:49:03,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 12:49:03,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:49:03,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 12:49:03,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-10-24 12:49:03,268 INFO L87 Difference]: Start difference. First operand 147 states and 202 transitions. Second operand has 10 states, 8 states have (on average 4.0) internal successors, (32), 6 states have internal predecessors, (32), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2024-10-24 12:49:04,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:49:04,546 INFO L93 Difference]: Finished difference Result 165 states and 226 transitions. [2024-10-24 12:49:04,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 12:49:04,546 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 4.0) internal successors, (32), 6 states have internal predecessors, (32), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 56 [2024-10-24 12:49:04,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:49:04,549 INFO L225 Difference]: With dead ends: 165 [2024-10-24 12:49:04,549 INFO L226 Difference]: Without dead ends: 158 [2024-10-24 12:49:04,549 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2024-10-24 12:49:04,550 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 131 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-24 12:49:04,550 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 728 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-24 12:49:04,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2024-10-24 12:49:04,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 150. [2024-10-24 12:49:04,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 98 states have (on average 1.2755102040816326) internal successors, (125), 101 states have internal predecessors, (125), 38 states have call successors, (38), 11 states have call predecessors, (38), 13 states have return successors, (48), 37 states have call predecessors, (48), 37 states have call successors, (48) [2024-10-24 12:49:04,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 211 transitions. [2024-10-24 12:49:04,576 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 211 transitions. Word has length 56 [2024-10-24 12:49:04,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:49:04,577 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 211 transitions. [2024-10-24 12:49:04,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 4.0) internal successors, (32), 6 states have internal predecessors, (32), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2024-10-24 12:49:04,577 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 211 transitions. [2024-10-24 12:49:04,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-10-24 12:49:04,578 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:49:04,579 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 12:49:04,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 12:49:04,579 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:49:04,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:49:04,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1489860677, now seen corresponding path program 1 times [2024-10-24 12:49:04,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:49:04,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390516105] [2024-10-24 12:49:04,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:49:04,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:49:04,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:04,858 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:49:04,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:04,872 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-24 12:49:04,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:04,881 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:49:04,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:04,887 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-24 12:49:04,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:04,897 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-24 12:49:04,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:04,903 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-24 12:49:04,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:04,919 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-24 12:49:04,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:04,939 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-10-24 12:49:04,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:49:04,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390516105] [2024-10-24 12:49:04,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390516105] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:49:04,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:49:04,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 12:49:04,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418576016] [2024-10-24 12:49:04,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:49:04,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 12:49:04,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:49:04,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 12:49:04,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-24 12:49:04,943 INFO L87 Difference]: Start difference. First operand 150 states and 211 transitions. Second operand has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2024-10-24 12:49:05,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:49:05,634 INFO L93 Difference]: Finished difference Result 199 states and 267 transitions. [2024-10-24 12:49:05,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 12:49:05,637 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 58 [2024-10-24 12:49:05,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:49:05,638 INFO L225 Difference]: With dead ends: 199 [2024-10-24 12:49:05,639 INFO L226 Difference]: Without dead ends: 162 [2024-10-24 12:49:05,639 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-10-24 12:49:05,640 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 120 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-24 12:49:05,640 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 546 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-24 12:49:05,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-10-24 12:49:05,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 150. [2024-10-24 12:49:05,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 98 states have (on average 1.2755102040816326) internal successors, (125), 101 states have internal predecessors, (125), 38 states have call successors, (38), 11 states have call predecessors, (38), 13 states have return successors, (48), 37 states have call predecessors, (48), 37 states have call successors, (48) [2024-10-24 12:49:05,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 211 transitions. [2024-10-24 12:49:05,652 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 211 transitions. Word has length 58 [2024-10-24 12:49:05,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:49:05,652 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 211 transitions. [2024-10-24 12:49:05,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2024-10-24 12:49:05,653 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 211 transitions. [2024-10-24 12:49:05,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-24 12:49:05,654 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:49:05,654 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 12:49:05,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 12:49:05,655 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:49:05,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:49:05,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1012144823, now seen corresponding path program 1 times [2024-10-24 12:49:05,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:49:05,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131880378] [2024-10-24 12:49:05,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:49:05,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:49:05,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:06,308 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:49:06,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:06,324 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-24 12:49:06,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:06,333 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:49:06,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:06,341 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-24 12:49:06,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:06,352 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-24 12:49:06,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:06,362 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 12:49:06,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:06,371 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-24 12:49:06,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:06,492 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-24 12:49:06,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:49:06,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131880378] [2024-10-24 12:49:06,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131880378] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:49:06,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:49:06,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 12:49:06,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476012551] [2024-10-24 12:49:06,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:49:06,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 12:49:06,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:49:06,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 12:49:06,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 12:49:06,495 INFO L87 Difference]: Start difference. First operand 150 states and 211 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2024-10-24 12:49:07,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:49:07,299 INFO L93 Difference]: Finished difference Result 312 states and 454 transitions. [2024-10-24 12:49:07,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 12:49:07,299 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 60 [2024-10-24 12:49:07,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:49:07,301 INFO L225 Difference]: With dead ends: 312 [2024-10-24 12:49:07,301 INFO L226 Difference]: Without dead ends: 175 [2024-10-24 12:49:07,302 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2024-10-24 12:49:07,305 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 176 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-24 12:49:07,305 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 386 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-24 12:49:07,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-10-24 12:49:07,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 155. [2024-10-24 12:49:07,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 103 states have (on average 1.2815533980582525) internal successors, (132), 106 states have internal predecessors, (132), 38 states have call successors, (38), 11 states have call predecessors, (38), 13 states have return successors, (48), 37 states have call predecessors, (48), 37 states have call successors, (48) [2024-10-24 12:49:07,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 218 transitions. [2024-10-24 12:49:07,323 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 218 transitions. Word has length 60 [2024-10-24 12:49:07,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:49:07,324 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 218 transitions. [2024-10-24 12:49:07,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2024-10-24 12:49:07,324 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 218 transitions. [2024-10-24 12:49:07,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-24 12:49:07,325 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:49:07,326 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 12:49:07,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 12:49:07,326 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:49:07,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:49:07,326 INFO L85 PathProgramCache]: Analyzing trace with hash -311080245, now seen corresponding path program 1 times [2024-10-24 12:49:07,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:49:07,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848261347] [2024-10-24 12:49:07,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:49:07,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:49:07,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:08,886 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:49:08,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:08,905 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-24 12:49:08,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:08,918 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:49:08,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:08,924 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-24 12:49:08,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:09,103 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-24 12:49:09,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:09,129 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-24 12:49:09,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:09,140 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-24 12:49:09,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:09,420 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-10-24 12:49:09,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:49:09,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848261347] [2024-10-24 12:49:09,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848261347] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:49:09,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410213258] [2024-10-24 12:49:09,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:49:09,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:49:09,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:49:09,425 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 12:49:09,426 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 12:49:09,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:49:09,892 INFO L255 TraceCheckSpWp]: Trace formula consists of 2455 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-24 12:49:09,903 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:49:10,045 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 12:49:10,385 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:49:10,387 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:49:10,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410213258] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:49:10,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:49:10,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13] total 22 [2024-10-24 12:49:10,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054482392] [2024-10-24 12:49:10,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:49:10,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 12:49:10,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:49:10,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 12:49:10,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2024-10-24 12:49:10,390 INFO L87 Difference]: Start difference. First operand 155 states and 218 transitions. Second operand has 11 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 4 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-10-24 12:49:15,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:49:19,425 WARN L539 Checker$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 12:49:23,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:49:27,765 WARN L539 Checker$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 12:49:31,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:49:35,988 WARN L539 Checker$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 12:49:40,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:49:44,622 WARN L539 Checker$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 12:49:48,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:49:52,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:49:56,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:50:00,735 WARN L539 Checker$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 12:50:04,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:50:08,793 WARN L539 Checker$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 12:50:12,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 12:50:16,869 WARN L539 Checker$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 12:50:16,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:50:16,891 INFO L93 Difference]: Finished difference Result 424 states and 597 transitions. [2024-10-24 12:50:16,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-24 12:50:16,892 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 4 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 60 [2024-10-24 12:50:16,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:50:16,894 INFO L225 Difference]: With dead ends: 424 [2024-10-24 12:50:16,894 INFO L226 Difference]: Without dead ends: 282 [2024-10-24 12:50:16,896 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=79, Invalid=571, Unknown=0, NotChecked=0, Total=650 [2024-10-24 12:50:16,897 INFO L432 NwaCegarLoop]: 256 mSDtfsCounter, 200 mSDsluCounter, 1041 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 16 mSolverCounterUnsat, 17 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 1297 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 17 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 66.3s IncrementalHoareTripleChecker+Time [2024-10-24 12:50:16,897 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 1297 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 653 Invalid, 17 Unknown, 0 Unchecked, 66.3s Time] [2024-10-24 12:50:16,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-10-24 12:50:16,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 270. [2024-10-24 12:50:16,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 183 states have (on average 1.2950819672131149) internal successors, (237), 190 states have internal predecessors, (237), 62 states have call successors, (62), 19 states have call predecessors, (62), 24 states have return successors, (79), 60 states have call predecessors, (79), 60 states have call successors, (79) [2024-10-24 12:50:16,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 378 transitions. [2024-10-24 12:50:16,938 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 378 transitions. Word has length 60 [2024-10-24 12:50:16,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:50:16,938 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 378 transitions. [2024-10-24 12:50:16,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 4 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-10-24 12:50:16,939 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 378 transitions. [2024-10-24 12:50:16,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-24 12:50:16,940 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:50:16,940 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:50:16,961 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 12:50:17,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:50:17,141 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:50:17,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:50:17,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1098771503, now seen corresponding path program 1 times [2024-10-24 12:50:17,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:50:17,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175682501] [2024-10-24 12:50:17,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:50:17,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:50:17,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:18,025 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:50:18,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:18,038 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-24 12:50:18,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:18,050 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:50:18,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:18,056 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-24 12:50:18,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:18,154 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-24 12:50:18,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:18,216 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-24 12:50:18,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:18,221 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-24 12:50:18,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:18,237 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-24 12:50:18,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:50:18,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175682501] [2024-10-24 12:50:18,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175682501] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:50:18,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448709124] [2024-10-24 12:50:18,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:50:18,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:50:18,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:50:18,242 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 12:50:18,243 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 12:50:18,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:18,682 INFO L255 TraceCheckSpWp]: Trace formula consists of 2462 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-24 12:50:18,685 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:50:18,732 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 12:50:18,733 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:50:18,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448709124] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:50:18,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:50:18,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 13 [2024-10-24 12:50:18,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330596351] [2024-10-24 12:50:18,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:50:18,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 12:50:18,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:50:18,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 12:50:18,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-10-24 12:50:18,735 INFO L87 Difference]: Start difference. First operand 270 states and 378 transitions. Second operand has 9 states, 7 states have (on average 7.0) internal successors, (49), 8 states have internal predecessors, (49), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-24 12:50:19,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 12:50:19,258 INFO L93 Difference]: Finished difference Result 535 states and 757 transitions. [2024-10-24 12:50:19,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 12:50:19,259 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 7.0) internal successors, (49), 8 states have internal predecessors, (49), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 64 [2024-10-24 12:50:19,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 12:50:19,262 INFO L225 Difference]: With dead ends: 535 [2024-10-24 12:50:19,262 INFO L226 Difference]: Without dead ends: 278 [2024-10-24 12:50:19,266 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-10-24 12:50:19,269 INFO L432 NwaCegarLoop]: 176 mSDtfsCounter, 0 mSDsluCounter, 1203 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1379 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 12:50:19,270 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1379 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 12:50:19,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2024-10-24 12:50:19,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 274. [2024-10-24 12:50:19,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 186 states have (on average 1.2903225806451613) internal successors, (240), 194 states have internal predecessors, (240), 62 states have call successors, (62), 19 states have call predecessors, (62), 25 states have return successors, (85), 60 states have call predecessors, (85), 60 states have call successors, (85) [2024-10-24 12:50:19,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 387 transitions. [2024-10-24 12:50:19,296 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 387 transitions. Word has length 64 [2024-10-24 12:50:19,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 12:50:19,296 INFO L471 AbstractCegarLoop]: Abstraction has 274 states and 387 transitions. [2024-10-24 12:50:19,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 7.0) internal successors, (49), 8 states have internal predecessors, (49), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-10-24 12:50:19,297 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 387 transitions. [2024-10-24 12:50:19,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-10-24 12:50:19,298 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 12:50:19,298 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:50:19,318 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 12:50:19,499 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,SelfDestructingSolverStorable8 [2024-10-24 12:50:19,499 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 12:50:19,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:50:19,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1525096918, now seen corresponding path program 1 times [2024-10-24 12:50:19,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:50:19,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899152949] [2024-10-24 12:50:19,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:50:19,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:50:19,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:19,723 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:50:19,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:19,732 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-10-24 12:50:19,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:19,739 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 12:50:19,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:19,744 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-24 12:50:19,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:19,773 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-24 12:50:19,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:19,784 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-24 12:50:19,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:19,789 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-24 12:50:19,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:50:19,799 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-24 12:50:19,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:50:19,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899152949] [2024-10-24 12:50:19,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899152949] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:50:19,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397562511] [2024-10-24 12:50:19,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:50:19,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:50:19,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:50:19,802 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 12:50:19,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process