./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_secure_zero_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4f9af400 extending candidate: java ['java'] extending candidate: /usr/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/oracle-jdk-bin-*/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/openjdk-*/bin/java ['java', '/usr/bin/java'] extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java ['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java'] ['/root/.sdkman/candidates/java/21.0.5-tem/bin/java', '-Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config', '-Xmx15G', '-Xms4m', '-jar', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar', '-data', '@noDefault', '-ultimatedata', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data', '-tc', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml', '-i', '../sv-benchmarks/c/aws-c-common/aws_byte_buf_secure_zero_harness_negated.i', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf', '--cacsl2boogietranslator.entry.function', 'main', '--witnessprinter.witness.directory', '/storage/repos/ultimate-jdk21/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())) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '64bit', '--witnessprinter.graph.data.programhash', 'f4ea1bf819896c6e25ef3f7fb1779a7e8667d9fd31f879e3224eef1df9a587fe'] Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_byte_buf_secure_zero_harness_negated.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 f4ea1bf819896c6e25ef3f7fb1779a7e8667d9fd31f879e3224eef1df9a587fe --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 11:46:45,150 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 11:46:45,237 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-07 11:46:45,245 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 11:46:45,245 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 11:46:45,274 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 11:46:45,275 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 11:46:45,276 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 11:46:45,276 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 11:46:45,277 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 11:46:45,277 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 11:46:45,277 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 11:46:45,278 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 11:46:45,278 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 11:46:45,278 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 11:46:45,278 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 11:46:45,278 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 11:46:45,278 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 11:46:45,278 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 11:46:45,278 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 11:46:45,278 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 11:46:45,278 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 11:46:45,278 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 11:46:45,278 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 11:46:45,278 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 11:46:45,279 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 11:46:45,279 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 11:46:45,279 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 11:46:45,279 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 11:46:45,279 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:46:45,279 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 11:46:45,279 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 11:46:45,279 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 11:46:45,279 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 11:46:45,279 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 11:46:45,279 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 11:46:45,279 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 11:46:45,279 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 11:46:45,279 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 11:46:45,280 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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-jdk21/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 -> f4ea1bf819896c6e25ef3f7fb1779a7e8667d9fd31f879e3224eef1df9a587fe [2024-11-07 11:46:45,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 11:46:45,570 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 11:46:45,572 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 11:46:45,573 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 11:46:45,573 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 11:46:45,575 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_secure_zero_harness_negated.i [2024-11-07 11:46:46,835 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 11:46:47,308 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 11:46:47,308 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_secure_zero_harness_negated.i [2024-11-07 11:46:47,348 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7c2958d4b/f28bb8d5eab4431a86e58a34fceadf98/FLAG0d0802bcb [2024-11-07 11:46:47,399 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7c2958d4b/f28bb8d5eab4431a86e58a34fceadf98 [2024-11-07 11:46:47,401 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 11:46:47,404 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 11:46:47,406 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 11:46:47,406 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 11:46:47,410 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 11:46:47,411 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:46:47" (1/1) ... [2024-11-07 11:46:47,412 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31c4443d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:46:47, skipping insertion in model container [2024-11-07 11:46:47,414 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 11:46:47" (1/1) ... [2024-11-07 11:46:47,502 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 11:46:47,732 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_secure_zero_harness_negated.i[4498,4511] [2024-11-07 11:46:47,741 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_secure_zero_harness_negated.i[4558,4571] [2024-11-07 11:46:48,308 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-07 11:46:48,309 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-07 11:46:48,309 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-07 11:46:48,310 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-07 11:46:48,311 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-07 11:46:48,325 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-07 11:46:48,325 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-07 11:46:48,327 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-07 11:46:48,327 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-07 11:46:48,794 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-07 11:46:48,795 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-07 11:46:48,863 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:46:48,925 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 11:46:48,939 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_secure_zero_harness_negated.i[4498,4511] [2024-11-07 11:46:48,943 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_secure_zero_harness_negated.i[4558,4571] [2024-11-07 11:46:48,987 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-07 11:46:48,987 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-07 11:46:48,989 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-07 11:46:48,989 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-07 11:46:48,990 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-07 11:46:48,999 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-07 11:46:48,999 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-07 11:46:49,000 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-07 11:46:49,001 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-07 11:46:49,166 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8259] [2024-11-07 11:46:49,168 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-07 11:46:49,169 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-07 11:46:49,182 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8745-8756] [2024-11-07 11:46:49,197 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 11:46:49,420 INFO L204 MainTranslator]: Completed translation [2024-11-07 11:46:49,420 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:46:49 WrapperNode [2024-11-07 11:46:49,421 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 11:46:49,422 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 11:46:49,422 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 11:46:49,422 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 11:46:49,427 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:46:49" (1/1) ... [2024-11-07 11:46:49,518 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:46:49" (1/1) ... [2024-11-07 11:46:49,596 INFO L138 Inliner]: procedures = 680, calls = 2612, calls flagged for inlining = 60, calls inlined = 8, statements flattened = 803 [2024-11-07 11:46:49,596 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 11:46:49,597 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 11:46:49,597 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 11:46:49,597 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 11:46:49,609 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:46:49" (1/1) ... [2024-11-07 11:46:49,609 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:46:49" (1/1) ... [2024-11-07 11:46:49,617 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:46:49" (1/1) ... [2024-11-07 11:46:49,698 INFO L175 MemorySlicer]: Split 527 memory accesses to 5 slices as follows [2, 7, 257, 238, 23]. 49 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 0, 6, 4]. The 493 writes are split as follows [0, 1, 257, 232, 3]. [2024-11-07 11:46:49,699 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:46:49" (1/1) ... [2024-11-07 11:46:49,699 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:46:49" (1/1) ... [2024-11-07 11:46:49,752 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:46:49" (1/1) ... [2024-11-07 11:46:49,758 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:46:49" (1/1) ... [2024-11-07 11:46:49,774 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:46:49" (1/1) ... [2024-11-07 11:46:49,778 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:46:49" (1/1) ... [2024-11-07 11:46:49,785 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 11:46:49,786 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 11:46:49,786 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 11:46:49,786 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 11:46:49,790 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:46:49" (1/1) ... [2024-11-07 11:46:49,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 11:46:49,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 11:46:49,823 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-07 11:46:49,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-07 11:46:49,855 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2024-11-07 11:46:49,856 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2024-11-07 11:46:49,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-07 11:46:49,856 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-07 11:46:49,857 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-07 11:46:49,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-07 11:46:49,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-07 11:46:49,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-07 11:46:49,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-07 11:46:49,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-07 11:46:49,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-07 11:46:49,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-07 11:46:49,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-07 11:46:49,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-07 11:46:49,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-07 11:46:49,858 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-07 11:46:49,858 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-07 11:46:49,858 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_secure_zero [2024-11-07 11:46:49,858 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_secure_zero [2024-11-07 11:46:49,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-07 11:46:49,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 11:46:49,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-07 11:46:49,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-07 11:46:49,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-07 11:46:49,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-07 11:46:49,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-07 11:46:49,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 11:46:49,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 11:46:49,860 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-07 11:46:49,860 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-07 11:46:49,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-07 11:46:49,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-07 11:46:49,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-07 11:46:49,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-07 11:46:49,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-07 11:46:49,860 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-07 11:46:49,860 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-07 11:46:49,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-07 11:46:49,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-07 11:46:49,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-07 11:46:49,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-07 11:46:49,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-07 11:46:49,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-07 11:46:49,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-07 11:46:49,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-07 11:46:49,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-07 11:46:49,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-07 11:46:49,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-07 11:46:49,861 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-07 11:46:49,861 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-07 11:46:49,861 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-07 11:46:49,861 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-07 11:46:49,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-07 11:46:49,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-07 11:46:49,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-07 11:46:49,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-07 11:46:49,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-07 11:46:49,861 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2024-11-07 11:46:49,861 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2024-11-07 11:46:49,861 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2024-11-07 11:46:49,861 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2024-11-07 11:46:49,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 11:46:49,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-07 11:46:49,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-07 11:46:49,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-07 11:46:49,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-07 11:46:50,187 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 11:46:50,190 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 11:46:57,738 INFO L? ?]: Removed 75 outVars from TransFormulas that were not future-live. [2024-11-07 11:46:57,738 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 11:46:57,750 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 11:46:57,750 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-07 11:46:57,751 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:46:57 BoogieIcfgContainer [2024-11-07 11:46:57,751 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 11:46:57,753 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 11:46:57,753 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 11:46:57,758 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 11:46:57,759 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 11:46:47" (1/3) ... [2024-11-07 11:46:57,759 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@764fde84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:46:57, skipping insertion in model container [2024-11-07 11:46:57,760 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 11:46:49" (2/3) ... [2024-11-07 11:46:57,760 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@764fde84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 11:46:57, skipping insertion in model container [2024-11-07 11:46:57,760 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 11:46:57" (3/3) ... [2024-11-07 11:46:57,761 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_secure_zero_harness_negated.i [2024-11-07 11:46:57,775 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 11:46:57,776 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-07 11:46:57,834 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 11:46:57,848 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;@6e8e689f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 11:46:57,848 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-07 11:46:57,853 INFO L276 IsEmpty]: Start isEmpty. Operand has 104 states, 71 states have (on average 1.2253521126760563) internal successors, (87), 72 states have internal predecessors, (87), 21 states have call successors, (21), 10 states have call predecessors, (21), 10 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-07 11:46:57,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-07 11:46:57,863 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 11:46:57,864 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:46:57,864 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 11:46:57,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:46:57,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1770303730, now seen corresponding path program 1 times [2024-11-07 11:46:57,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:46:57,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327190045] [2024-11-07 11:46:57,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:46:57,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 11:48:05,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:48:06,992 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-07 11:48:06,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:48:07,015 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-07 11:48:07,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:48:07,129 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-07 11:48:07,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:48:07,147 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-07 11:48:07,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:48:07,162 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-07 11:48:07,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:48:07,179 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-07 11:48:07,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:48:07,191 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-11-07 11:48:07,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:48:07,210 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-07 11:48:07,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:48:07,225 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-11-07 11:48:07,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 11:48:07,248 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-07 11:48:07,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 11:48:07,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327190045] [2024-11-07 11:48:07,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327190045] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 11:48:07,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 11:48:07,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 11:48:07,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268632938] [2024-11-07 11:48:07,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 11:48:07,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 11:48:07,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 11:48:07,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 11:48:07,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 11:48:07,279 INFO L87 Difference]: Start difference. First operand has 104 states, 71 states have (on average 1.2253521126760563) internal successors, (87), 72 states have internal predecessors, (87), 21 states have call successors, (21), 10 states have call predecessors, (21), 10 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-07 11:48:11,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-07 11:48:13,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 11:48:13,402 INFO L93 Difference]: Finished difference Result 204 states and 267 transitions. [2024-11-07 11:48:13,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 11:48:13,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 65 [2024-11-07 11:48:13,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 11:48:13,411 INFO L225 Difference]: With dead ends: 204 [2024-11-07 11:48:13,411 INFO L226 Difference]: Without dead ends: 99 [2024-11-07 11:48:13,414 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 11:48:13,416 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 66 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2024-11-07 11:48:13,416 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 74 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 89 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2024-11-07 11:48:13,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-07 11:48:13,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2024-11-07 11:48:13,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 67 states have (on average 1.1940298507462686) internal successors, (80), 68 states have internal predecessors, (80), 21 states have call successors, (21), 10 states have call predecessors, (21), 10 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-07 11:48:13,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 121 transitions. [2024-11-07 11:48:13,451 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 121 transitions. Word has length 65 [2024-11-07 11:48:13,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 11:48:13,452 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 121 transitions. [2024-11-07 11:48:13,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-07 11:48:13,453 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 121 transitions. [2024-11-07 11:48:13,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-07 11:48:13,457 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 11:48:13,457 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 11:48:13,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 11:48:13,458 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 11:48:13,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 11:48:13,458 INFO L85 PathProgramCache]: Analyzing trace with hash -638643194, now seen corresponding path program 1 times [2024-11-07 11:48:13,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 11:48:13,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526325070] [2024-11-07 11:48:13,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 11:48:13,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms