./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC --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 6882eeeeda078376f05bcbd4b1762ced588254a85bc5f57e76099cec8f6bde3a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:51:06,054 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:51:06,135 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-24 00:51:06,148 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:51:06,148 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:51:06,184 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:51:06,185 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:51:06,185 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:51:06,185 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:51:06,186 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:51:06,186 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:51:06,186 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:51:06,186 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:51:06,186 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:51:06,186 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:51:06,186 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:51:06,187 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:51:06,187 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:51:06,187 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:51:06,187 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:51:06,187 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:51:06,189 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:51:06,189 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:51:06,189 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:51:06,189 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:51:06,189 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:51:06,189 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:51:06,190 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:51:06,190 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:51:06,190 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:51:06,190 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:51:06,191 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:51:06,191 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:51:06,191 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:51:06,191 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:51:06,191 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:51:06,191 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:51:06,191 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:51:06,191 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:51:06,191 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:51:06,191 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:51:06,191 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:51:06,192 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:51:06,192 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:51:06,192 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:51:06,192 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 -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC 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 -> 6882eeeeda078376f05bcbd4b1762ced588254a85bc5f57e76099cec8f6bde3a [2024-11-24 00:51:06,538 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:51:06,552 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:51:06,554 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:51:06,556 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:51:06,556 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:51:06,558 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i [2024-11-24 00:51:09,511 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/data/d522df47d/a42036e9890a4845960c1247ef75bdc4/FLAG932247fc8 [2024-11-24 00:51:10,151 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:51:10,152 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i [2024-11-24 00:51:10,188 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/data/d522df47d/a42036e9890a4845960c1247ef75bdc4/FLAG932247fc8 [2024-11-24 00:51:10,206 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/data/d522df47d/a42036e9890a4845960c1247ef75bdc4 [2024-11-24 00:51:10,207 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:51:10,209 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:51:10,210 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:51:10,210 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:51:10,215 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:51:10,216 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:51:10" (1/1) ... [2024-11-24 00:51:10,217 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11e2d96b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:51:10, skipping insertion in model container [2024-11-24 00:51:10,217 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:51:10" (1/1) ... [2024-11-24 00:51:10,303 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:51:10,604 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i[4493,4506] [2024-11-24 00:51:10,611 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i[4553,4566] [2024-11-24 00:51:11,767 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:51:11,768 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:51:11,768 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:51:11,769 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:51:11,770 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:51:11,788 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:51:11,788 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:51:11,790 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:51:11,791 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:51:11,793 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:51:11,794 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:51:11,795 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:51:11,795 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:51:13,031 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:51:13,032 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:51:13,071 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:51:13,072 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:51:13,079 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:51:13,081 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:51:13,103 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:51:13,104 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:51:13,105 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:51:13,105 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:51:13,105 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:51:13,106 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:51:13,106 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:51:13,159 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i[228095,228108] [2024-11-24 00:51:13,160 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:51:13,194 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:51:13,212 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i[4493,4506] [2024-11-24 00:51:13,213 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i[4553,4566] [2024-11-24 00:51:13,302 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:51:13,303 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:51:13,303 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:51:13,303 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:51:13,304 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:51:13,315 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:51:13,316 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:51:13,316 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:51:13,317 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:51:13,317 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:51:13,318 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:51:13,318 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:51:13,318 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:51:13,389 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7558-7569] [2024-11-24 00:51:13,502 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:51:13,503 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:51:13,542 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:51:13,543 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:51:13,546 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:51:13,546 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:51:13,559 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:51:13,560 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:51:13,561 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:51:13,562 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:51:13,562 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:51:13,563 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:51:13,563 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:51:13,587 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness.i[228095,228108] [2024-11-24 00:51:13,587 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:51:13,807 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:51:13,808 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:51:13 WrapperNode [2024-11-24 00:51:13,808 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:51:13,809 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:51:13,810 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:51:13,810 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:51:13,817 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:51:13" (1/1) ... [2024-11-24 00:51:13,894 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:51:13" (1/1) ... [2024-11-24 00:51:13,956 INFO L138 Inliner]: procedures = 763, calls = 2436, calls flagged for inlining = 67, calls inlined = 9, statements flattened = 598 [2024-11-24 00:51:13,957 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:51:13,958 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:51:13,958 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:51:13,958 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:51:13,968 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:51:13" (1/1) ... [2024-11-24 00:51:13,969 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:51:13" (1/1) ... [2024-11-24 00:51:13,976 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:51:13" (1/1) ... [2024-11-24 00:51:14,089 INFO L175 MemorySlicer]: Split 284 memory accesses to 9 slices as follows [2, 238, 9, 2, 3, 17, 6, 2, 5]. 84 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 6, 0, 1, 0, 0, 0, 0, 5]. The 240 writes are split as follows [0, 232, 3, 0, 1, 1, 2, 1, 0]. [2024-11-24 00:51:14,092 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:51:13" (1/1) ... [2024-11-24 00:51:14,093 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:51:13" (1/1) ... [2024-11-24 00:51:14,148 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:51:13" (1/1) ... [2024-11-24 00:51:14,151 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:51:13" (1/1) ... [2024-11-24 00:51:14,154 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:51:13" (1/1) ... [2024-11-24 00:51:14,167 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:51:13" (1/1) ... [2024-11-24 00:51:14,170 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:51:13" (1/1) ... [2024-11-24 00:51:14,182 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:51:14,183 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:51:14,183 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:51:14,183 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:51:14,184 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:51:13" (1/1) ... [2024-11-24 00:51:14,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:51:14,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:51:14,243 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:51:14,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:51:14,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-11-24 00:51:14,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-11-24 00:51:14,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2024-11-24 00:51:14,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2024-11-24 00:51:14,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2024-11-24 00:51:14,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2024-11-24 00:51:14,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2024-11-24 00:51:14,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2024-11-24 00:51:14,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2024-11-24 00:51:14,275 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_hash_table [2024-11-24 00:51:14,276 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_hash_table [2024-11-24 00:51:14,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-24 00:51:14,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-24 00:51:14,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-24 00:51:14,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-24 00:51:14,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-24 00:51:14,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-24 00:51:14,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-24 00:51:14,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2024-11-24 00:51:14,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2024-11-24 00:51:14,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#8 [2024-11-24 00:51:14,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-24 00:51:14,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-24 00:51:14,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-24 00:51:14,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-24 00:51:14,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-24 00:51:14,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-24 00:51:14,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-24 00:51:14,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-24 00:51:14,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-24 00:51:14,277 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-11-24 00:51:14,277 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-11-24 00:51:14,277 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-24 00:51:14,277 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-24 00:51:14,277 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2024-11-24 00:51:14,277 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2024-11-24 00:51:14,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-24 00:51:14,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:51:14,277 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2024-11-24 00:51:14,278 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2024-11-24 00:51:14,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-24 00:51:14,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-24 00:51:14,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-24 00:51:14,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-24 00:51:14,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-24 00:51:14,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-24 00:51:14,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-24 00:51:14,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-24 00:51:14,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-11-24 00:51:14,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:51:14,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:51:14,278 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-24 00:51:14,278 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-24 00:51:14,278 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2024-11-24 00:51:14,279 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2024-11-24 00:51:14,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-24 00:51:14,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-24 00:51:14,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-24 00:51:14,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-24 00:51:14,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-24 00:51:14,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-24 00:51:14,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2024-11-24 00:51:14,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2024-11-24 00:51:14,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#8 [2024-11-24 00:51:14,282 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-24 00:51:14,283 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-24 00:51:14,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-24 00:51:14,283 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2024-11-24 00:51:14,283 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2024-11-24 00:51:14,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-24 00:51:14,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-24 00:51:14,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-24 00:51:14,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-24 00:51:14,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-24 00:51:14,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-24 00:51:14,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-24 00:51:14,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-24 00:51:14,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-11-24 00:51:14,283 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2024-11-24 00:51:14,283 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2024-11-24 00:51:14,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-24 00:51:14,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-24 00:51:14,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-24 00:51:14,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-24 00:51:14,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-24 00:51:14,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-24 00:51:14,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-24 00:51:14,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-11-24 00:51:14,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2024-11-24 00:51:14,284 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_allocated_hash_table [2024-11-24 00:51:14,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_allocated_hash_table [2024-11-24 00:51:14,284 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2024-11-24 00:51:14,284 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2024-11-24 00:51:14,284 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2024-11-24 00:51:14,284 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2024-11-24 00:51:14,284 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-24 00:51:14,284 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-24 00:51:14,284 INFO L130 BoogieDeclarations]: Found specification of procedure check_hash_table_unchanged [2024-11-24 00:51:14,285 INFO L138 BoogieDeclarations]: Found implementation of procedure check_hash_table_unchanged [2024-11-24 00:51:14,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-24 00:51:14,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-24 00:51:14,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-24 00:51:14,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-24 00:51:14,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-24 00:51:14,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-24 00:51:14,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-24 00:51:14,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-24 00:51:14,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-24 00:51:14,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 00:51:14,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-24 00:51:14,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-24 00:51:14,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-24 00:51:14,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-24 00:51:14,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-24 00:51:14,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-24 00:51:14,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-24 00:51:14,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-24 00:51:14,286 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2024-11-24 00:51:14,286 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2024-11-24 00:51:14,781 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:51:14,783 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:51:20,962 INFO L? ?]: Removed 117 outVars from TransFormulas that were not future-live. [2024-11-24 00:51:20,962 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:51:20,976 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:51:20,976 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-24 00:51:20,976 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:51:20 BoogieIcfgContainer [2024-11-24 00:51:20,977 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:51:20,980 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:51:20,980 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:51:20,985 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:51:20,985 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:51:10" (1/3) ... [2024-11-24 00:51:20,986 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ce1a90b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:51:20, skipping insertion in model container [2024-11-24 00:51:20,986 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:51:13" (2/3) ... [2024-11-24 00:51:20,988 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ce1a90b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:51:20, skipping insertion in model container [2024-11-24 00:51:20,988 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:51:20" (3/3) ... [2024-11-24 00:51:20,989 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_hash_table_swap_harness.i [2024-11-24 00:51:21,007 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:51:21,009 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_hash_table_swap_harness.i that has 17 procedures, 142 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-24 00:51:21,080 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:51:21,096 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;@5345daa7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:51:21,096 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 00:51:21,101 INFO L276 IsEmpty]: Start isEmpty. Operand has 142 states, 89 states have (on average 1.202247191011236) internal successors, (107), 94 states have internal predecessors, (107), 35 states have call successors, (35), 16 states have call predecessors, (35), 16 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-24 00:51:21,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-24 00:51:21,110 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:51:21,110 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:51:21,111 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:51:21,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:51:21,115 INFO L85 PathProgramCache]: Analyzing trace with hash 35159209, now seen corresponding path program 1 times [2024-11-24 00:51:21,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:51:21,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171384933] [2024-11-24 00:51:21,123 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:51:21,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:51:28,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:51:29,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:51:29,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:51:29,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171384933] [2024-11-24 00:51:29,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171384933] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:51:29,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:51:29,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 00:51:29,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207802709] [2024-11-24 00:51:29,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:51:29,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 00:51:29,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:51:29,314 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 00:51:29,315 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:51:29,317 INFO L87 Difference]: Start difference. First operand has 142 states, 89 states have (on average 1.202247191011236) internal successors, (107), 94 states have internal predecessors, (107), 35 states have call successors, (35), 16 states have call predecessors, (35), 16 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-24 00:51:29,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:51:29,378 INFO L93 Difference]: Finished difference Result 280 states and 374 transitions. [2024-11-24 00:51:29,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 00:51:29,380 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2024-11-24 00:51:29,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:51:29,391 INFO L225 Difference]: With dead ends: 280 [2024-11-24 00:51:29,391 INFO L226 Difference]: Without dead ends: 137 [2024-11-24 00:51:29,395 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:51:29,399 INFO L435 NwaCegarLoop]: 174 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:51:29,400 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:51:29,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-11-24 00:51:29,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2024-11-24 00:51:29,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 85 states have (on average 1.1647058823529413) internal successors, (99), 89 states have internal predecessors, (99), 35 states have call successors, (35), 16 states have call predecessors, (35), 16 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-24 00:51:29,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 168 transitions. [2024-11-24 00:51:29,466 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 168 transitions. Word has length 25 [2024-11-24 00:51:29,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:51:29,471 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 168 transitions. [2024-11-24 00:51:29,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-24 00:51:29,472 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 168 transitions. [2024-11-24 00:51:29,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-24 00:51:29,474 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:51:29,474 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:51:29,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 00:51:29,477 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:51:29,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:51:29,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1958985497, now seen corresponding path program 1 times [2024-11-24 00:51:29,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:51:29,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609698542] [2024-11-24 00:51:29,479 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:51:29,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:51:35,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:51:35,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:51:35,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:51:35,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609698542] [2024-11-24 00:51:35,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609698542] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:51:35,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:51:35,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:51:35,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078897750] [2024-11-24 00:51:35,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:51:35,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:51:35,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:51:35,967 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:51:35,968 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:51:35,968 INFO L87 Difference]: Start difference. First operand 137 states and 168 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-24 00:51:36,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:51:36,052 INFO L93 Difference]: Finished difference Result 192 states and 238 transitions. [2024-11-24 00:51:36,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:51:36,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2024-11-24 00:51:36,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:51:36,054 INFO L225 Difference]: With dead ends: 192 [2024-11-24 00:51:36,055 INFO L226 Difference]: Without dead ends: 148 [2024-11-24 00:51:36,055 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:51:36,056 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 2 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:51:36,057 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 330 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:51:36,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-11-24 00:51:36,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2024-11-24 00:51:36,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 91 states have (on average 1.164835164835165) internal successors, (106), 95 states have internal predecessors, (106), 40 states have call successors, (40), 16 states have call predecessors, (40), 16 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-24 00:51:36,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 185 transitions. [2024-11-24 00:51:36,074 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 185 transitions. Word has length 25 [2024-11-24 00:51:36,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:51:36,075 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 185 transitions. [2024-11-24 00:51:36,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-24 00:51:36,075 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 185 transitions. [2024-11-24 00:51:36,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-24 00:51:36,076 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:51:36,080 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:51:36,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 00:51:36,081 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:51:36,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:51:36,081 INFO L85 PathProgramCache]: Analyzing trace with hash -63722128, now seen corresponding path program 1 times [2024-11-24 00:51:36,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:51:36,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379311501] [2024-11-24 00:51:36,081 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:51:36,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:51:41,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:51:41,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:51:41,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:51:41,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379311501] [2024-11-24 00:51:41,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379311501] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:51:41,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:51:41,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:51:41,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404162849] [2024-11-24 00:51:41,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:51:41,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:51:41,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:51:41,968 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:51:41,968 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:51:41,968 INFO L87 Difference]: Start difference. First operand 148 states and 185 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-24 00:51:42,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:51:42,035 INFO L93 Difference]: Finished difference Result 202 states and 250 transitions. [2024-11-24 00:51:42,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:51:42,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2024-11-24 00:51:42,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:51:42,038 INFO L225 Difference]: With dead ends: 202 [2024-11-24 00:51:42,038 INFO L226 Difference]: Without dead ends: 157 [2024-11-24 00:51:42,038 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:51:42,039 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 2 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:51:42,043 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 332 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:51:42,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-11-24 00:51:42,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2024-11-24 00:51:42,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 96 states have (on average 1.1458333333333333) internal successors, (110), 99 states have internal predecessors, (110), 44 states have call successors, (44), 16 states have call predecessors, (44), 16 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-24 00:51:42,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 196 transitions. [2024-11-24 00:51:42,071 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 196 transitions. Word has length 26 [2024-11-24 00:51:42,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:51:42,072 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 196 transitions. [2024-11-24 00:51:42,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-24 00:51:42,073 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 196 transitions. [2024-11-24 00:51:42,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-24 00:51:42,081 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:51:42,081 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:51:42,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 00:51:42,082 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:51:42,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:51:42,085 INFO L85 PathProgramCache]: Analyzing trace with hash -152541444, now seen corresponding path program 1 times [2024-11-24 00:51:42,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:51:42,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128672380] [2024-11-24 00:51:42,085 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:51:42,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:51:46,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:51:48,325 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-11-24 00:51:48,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:51:48,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128672380] [2024-11-24 00:51:48,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128672380] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:51:48,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017193575] [2024-11-24 00:51:48,326 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:51:48,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:51:48,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:51:48,331 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:51:48,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 00:51:54,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:51:54,849 INFO L256 TraceCheckSpWp]: Trace formula consists of 4485 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-24 00:51:54,864 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:51:55,012 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-24 00:51:55,015 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:51:55,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017193575] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:51:55,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:51:55,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2024-11-24 00:51:55,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125724883] [2024-11-24 00:51:55,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:51:55,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:51:55,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:51:55,019 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:51:55,019 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:51:55,019 INFO L87 Difference]: Start difference. First operand 157 states and 196 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-24 00:51:55,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:51:55,211 INFO L93 Difference]: Finished difference Result 313 states and 397 transitions. [2024-11-24 00:51:55,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:51:55,211 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 129 [2024-11-24 00:51:55,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:51:55,216 INFO L225 Difference]: With dead ends: 313 [2024-11-24 00:51:55,217 INFO L226 Difference]: Without dead ends: 162 [2024-11-24 00:51:55,218 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:51:55,222 INFO L435 NwaCegarLoop]: 165 mSDtfsCounter, 0 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:51:55,223 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 656 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:51:55,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-11-24 00:51:55,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2024-11-24 00:51:55,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 100 states have (on average 1.14) internal successors, (114), 103 states have internal predecessors, (114), 44 states have call successors, (44), 16 states have call predecessors, (44), 17 states have return successors, (43), 43 states have call predecessors, (43), 42 states have call successors, (43) [2024-11-24 00:51:55,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 201 transitions. [2024-11-24 00:51:55,248 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 201 transitions. Word has length 129 [2024-11-24 00:51:55,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:51:55,249 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 201 transitions. [2024-11-24 00:51:55,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-24 00:51:55,251 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 201 transitions. [2024-11-24 00:51:55,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-24 00:51:55,258 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:51:55,258 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:51:55,279 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 00:51:55,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:51:55,463 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:51:55,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:51:55,463 INFO L85 PathProgramCache]: Analyzing trace with hash 209357336, now seen corresponding path program 1 times [2024-11-24 00:51:55,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:51:55,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698139376] [2024-11-24 00:51:55,464 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:51:55,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:52:00,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:52:05,459 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-24 00:52:05,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:52:05,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698139376] [2024-11-24 00:52:05,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698139376] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:52:05,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115755457] [2024-11-24 00:52:05,460 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:52:05,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:52:05,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:52:05,467 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:52:05,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 00:52:11,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:52:11,686 INFO L256 TraceCheckSpWp]: Trace formula consists of 4493 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-24 00:52:11,695 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:52:12,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-24 00:52:13,616 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-24 00:52:13,618 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:52:13,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115755457] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:52:13,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:52:13,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 16 [2024-11-24 00:52:13,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317694275] [2024-11-24 00:52:13,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:52:13,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-24 00:52:13,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:52:13,621 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-24 00:52:13,621 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2024-11-24 00:52:13,622 INFO L87 Difference]: Start difference. First operand 162 states and 201 transitions. Second operand has 12 states, 11 states have (on average 7.363636363636363) internal successors, (81), 9 states have internal predecessors, (81), 4 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (22), 5 states have call predecessors, (22), 4 states have call successors, (22) [2024-11-24 00:52:18,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:52:18,624 INFO L93 Difference]: Finished difference Result 360 states and 441 transitions. [2024-11-24 00:52:18,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-24 00:52:18,625 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.363636363636363) internal successors, (81), 9 states have internal predecessors, (81), 4 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (22), 5 states have call predecessors, (22), 4 states have call successors, (22) Word has length 141 [2024-11-24 00:52:18,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:52:18,630 INFO L225 Difference]: With dead ends: 360 [2024-11-24 00:52:18,630 INFO L226 Difference]: Without dead ends: 244 [2024-11-24 00:52:18,631 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2024-11-24 00:52:18,632 INFO L435 NwaCegarLoop]: 224 mSDtfsCounter, 156 mSDsluCounter, 1267 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 1491 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:52:18,632 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 1491 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-24 00:52:18,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2024-11-24 00:52:18,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 240. [2024-11-24 00:52:18,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 152 states have (on average 1.138157894736842) internal successors, (173), 156 states have internal predecessors, (173), 58 states have call successors, (58), 27 states have call predecessors, (58), 29 states have return successors, (62), 57 states have call predecessors, (62), 56 states have call successors, (62) [2024-11-24 00:52:18,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 293 transitions. [2024-11-24 00:52:18,659 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 293 transitions. Word has length 141 [2024-11-24 00:52:18,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:52:18,660 INFO L471 AbstractCegarLoop]: Abstraction has 240 states and 293 transitions. [2024-11-24 00:52:18,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.363636363636363) internal successors, (81), 9 states have internal predecessors, (81), 4 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (22), 5 states have call predecessors, (22), 4 states have call successors, (22) [2024-11-24 00:52:18,660 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 293 transitions. [2024-11-24 00:52:18,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-24 00:52:18,662 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:52:18,662 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:52:18,683 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-24 00:52:18,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:52:18,863 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:52:18,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:52:18,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1412508686, now seen corresponding path program 1 times [2024-11-24 00:52:18,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:52:18,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200181481] [2024-11-24 00:52:18,864 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:52:18,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:52:24,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:52:27,987 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-24 00:52:27,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:52:27,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200181481] [2024-11-24 00:52:27,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200181481] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:52:27,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343300378] [2024-11-24 00:52:27,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:52:27,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:52:27,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:52:27,989 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:52:27,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 00:52:34,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:52:34,519 INFO L256 TraceCheckSpWp]: Trace formula consists of 4491 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-24 00:52:34,526 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:52:34,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-24 00:52:36,177 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-24 00:52:36,177 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:52:36,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343300378] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:52:36,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:52:36,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 16 [2024-11-24 00:52:36,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811026950] [2024-11-24 00:52:36,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:52:36,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-24 00:52:36,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:52:36,179 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-24 00:52:36,179 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2024-11-24 00:52:36,180 INFO L87 Difference]: Start difference. First operand 240 states and 293 transitions. Second operand has 12 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 9 states have internal predecessors, (80), 4 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (22), 5 states have call predecessors, (22), 4 states have call successors, (22) [2024-11-24 00:52:41,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:52:41,076 INFO L93 Difference]: Finished difference Result 395 states and 487 transitions. [2024-11-24 00:52:41,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-24 00:52:41,078 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 9 states have internal predecessors, (80), 4 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (22), 5 states have call predecessors, (22), 4 states have call successors, (22) Word has length 140 [2024-11-24 00:52:41,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:52:41,080 INFO L225 Difference]: With dead ends: 395 [2024-11-24 00:52:41,080 INFO L226 Difference]: Without dead ends: 244 [2024-11-24 00:52:41,081 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2024-11-24 00:52:41,082 INFO L435 NwaCegarLoop]: 226 mSDtfsCounter, 161 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 1169 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:52:41,084 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 1169 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-24 00:52:41,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2024-11-24 00:52:41,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 240. [2024-11-24 00:52:41,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 152 states have (on average 1.138157894736842) internal successors, (173), 156 states have internal predecessors, (173), 58 states have call successors, (58), 27 states have call predecessors, (58), 29 states have return successors, (61), 57 states have call predecessors, (61), 56 states have call successors, (61) [2024-11-24 00:52:41,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 292 transitions. [2024-11-24 00:52:41,157 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 292 transitions. Word has length 140 [2024-11-24 00:52:41,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:52:41,158 INFO L471 AbstractCegarLoop]: Abstraction has 240 states and 292 transitions. [2024-11-24 00:52:41,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 9 states have internal predecessors, (80), 4 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (22), 5 states have call predecessors, (22), 4 states have call successors, (22) [2024-11-24 00:52:41,158 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 292 transitions. [2024-11-24 00:52:41,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-24 00:52:41,166 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:52:41,166 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:52:41,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-24 00:52:41,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:52:41,371 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:52:41,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:52:41,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1905134860, now seen corresponding path program 1 times [2024-11-24 00:52:41,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:52:41,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605332356] [2024-11-24 00:52:41,374 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:52:41,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:52:46,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:52:47,740 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-24 00:52:47,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:52:47,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605332356] [2024-11-24 00:52:47,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605332356] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:52:47,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028038695] [2024-11-24 00:52:47,741 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:52:47,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:52:47,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:52:47,743 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:52:47,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 00:52:54,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:52:54,546 INFO L256 TraceCheckSpWp]: Trace formula consists of 4486 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-24 00:52:54,552 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:52:55,104 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-24 00:52:55,108 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:52:55,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028038695] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:52:55,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:52:55,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-11-24 00:52:55,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997786791] [2024-11-24 00:52:55,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:52:55,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:52:55,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:52:55,110 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:52:55,110 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:52:55,110 INFO L87 Difference]: Start difference. First operand 240 states and 292 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2024-11-24 00:52:56,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:52:56,109 INFO L93 Difference]: Finished difference Result 396 states and 488 transitions. [2024-11-24 00:52:56,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:52:56,110 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 140 [2024-11-24 00:52:56,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:52:56,113 INFO L225 Difference]: With dead ends: 396 [2024-11-24 00:52:56,113 INFO L226 Difference]: Without dead ends: 245 [2024-11-24 00:52:56,114 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:52:56,114 INFO L435 NwaCegarLoop]: 150 mSDtfsCounter, 169 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-24 00:52:56,115 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 568 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-24 00:52:56,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2024-11-24 00:52:56,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2024-11-24 00:52:56,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 155 states have (on average 1.135483870967742) internal successors, (176), 160 states have internal predecessors, (176), 59 states have call successors, (59), 27 states have call predecessors, (59), 30 states have return successors, (66), 58 states have call predecessors, (66), 57 states have call successors, (66) [2024-11-24 00:52:56,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 301 transitions. [2024-11-24 00:52:56,141 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 301 transitions. Word has length 140 [2024-11-24 00:52:56,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:52:56,142 INFO L471 AbstractCegarLoop]: Abstraction has 245 states and 301 transitions. [2024-11-24 00:52:56,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2024-11-24 00:52:56,142 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 301 transitions. [2024-11-24 00:52:56,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-24 00:52:56,144 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:52:56,144 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:52:56,166 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-24 00:52:56,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:52:56,345 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:52:56,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:52:56,345 INFO L85 PathProgramCache]: Analyzing trace with hash -283268838, now seen corresponding path program 1 times [2024-11-24 00:52:56,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:52:56,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276044658] [2024-11-24 00:52:56,346 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:52:56,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:53:01,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:53:02,327 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-24 00:53:02,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:53:02,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276044658] [2024-11-24 00:53:02,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276044658] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:53:02,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944994705] [2024-11-24 00:53:02,327 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:53:02,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:53:02,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:53:02,329 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:53:02,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 00:53:09,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:53:09,331 INFO L256 TraceCheckSpWp]: Trace formula consists of 4488 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-24 00:53:09,336 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:53:09,839 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-24 00:53:09,839 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:53:09,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944994705] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:53:09,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:53:09,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-11-24 00:53:09,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032554862] [2024-11-24 00:53:09,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:53:09,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:53:09,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:53:09,841 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:53:09,841 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:53:09,841 INFO L87 Difference]: Start difference. First operand 245 states and 301 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2024-11-24 00:53:10,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:53:10,840 INFO L93 Difference]: Finished difference Result 374 states and 455 transitions. [2024-11-24 00:53:10,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:53:10,841 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 141 [2024-11-24 00:53:10,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:53:10,843 INFO L225 Difference]: With dead ends: 374 [2024-11-24 00:53:10,843 INFO L226 Difference]: Without dead ends: 238 [2024-11-24 00:53:10,844 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:53:10,845 INFO L435 NwaCegarLoop]: 152 mSDtfsCounter, 166 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-24 00:53:10,845 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 572 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-24 00:53:10,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-11-24 00:53:10,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2024-11-24 00:53:10,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 150 states have (on average 1.1266666666666667) internal successors, (169), 154 states have internal predecessors, (169), 58 states have call successors, (58), 27 states have call predecessors, (58), 29 states have return successors, (61), 57 states have call predecessors, (61), 56 states have call successors, (61) [2024-11-24 00:53:10,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 288 transitions. [2024-11-24 00:53:10,871 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 288 transitions. Word has length 141 [2024-11-24 00:53:10,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:53:10,871 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 288 transitions. [2024-11-24 00:53:10,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2024-11-24 00:53:10,872 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 288 transitions. [2024-11-24 00:53:10,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-24 00:53:10,874 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:53:10,874 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:53:10,892 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-24 00:53:11,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-24 00:53:11,074 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:53:11,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:53:11,075 INFO L85 PathProgramCache]: Analyzing trace with hash 720704093, now seen corresponding path program 1 times [2024-11-24 00:53:11,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:53:11,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333782170] [2024-11-24 00:53:11,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:53:11,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:53:15,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:53:17,518 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-11-24 00:53:17,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:53:17,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333782170] [2024-11-24 00:53:17,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333782170] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:53:17,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679509307] [2024-11-24 00:53:17,519 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:53:17,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:53:17,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:53:17,521 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:53:17,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-24 00:53:24,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:53:24,757 INFO L256 TraceCheckSpWp]: Trace formula consists of 4515 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-24 00:53:24,767 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:53:29,726 WARN L873 $PredicateComparison]: unable to prove that (or (exists ((v_aws_hash_table_is_valid_~map.base_4 Int) (v_aws_hash_table_is_valid_~map.offset_4 Int)) (not (= (select (select |c_#memory_$Pointer$#2.offset| v_aws_hash_table_is_valid_~map.base_4) v_aws_hash_table_is_valid_~map.offset_4) 0))) (exists ((v_aws_hash_table_is_valid_~map.base_4 Int) (v_aws_hash_table_is_valid_~map.offset_4 Int)) (not (= (select (select |c_#memory_$Pointer$#2.base| v_aws_hash_table_is_valid_~map.base_4) v_aws_hash_table_is_valid_~map.offset_4) 0)))) is different from true [2024-11-24 00:53:38,311 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-24 00:53:38,311 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:53:38,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679509307] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:53:38,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:53:38,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-24 00:53:38,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835507101] [2024-11-24 00:53:38,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:53:38,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 00:53:38,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:53:38,312 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 00:53:38,312 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=105, Unknown=3, NotChecked=20, Total=156 [2024-11-24 00:53:38,313 INFO L87 Difference]: Start difference. First operand 238 states and 288 transitions. Second operand has 8 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) [2024-11-24 00:53:39,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:53:39,121 INFO L93 Difference]: Finished difference Result 397 states and 488 transitions. [2024-11-24 00:53:39,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 00:53:39,122 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) Word has length 146 [2024-11-24 00:53:39,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:53:39,124 INFO L225 Difference]: With dead ends: 397 [2024-11-24 00:53:39,125 INFO L226 Difference]: Without dead ends: 238 [2024-11-24 00:53:39,126 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=28, Invalid=105, Unknown=3, NotChecked=20, Total=156 [2024-11-24 00:53:39,127 INFO L435 NwaCegarLoop]: 161 mSDtfsCounter, 3 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 172 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-24 00:53:39,128 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 909 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 172 Unchecked, 0.8s Time] [2024-11-24 00:53:39,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-11-24 00:53:39,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2024-11-24 00:53:39,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 150 states have (on average 1.12) internal successors, (168), 154 states have internal predecessors, (168), 58 states have call successors, (58), 27 states have call predecessors, (58), 29 states have return successors, (61), 57 states have call predecessors, (61), 56 states have call successors, (61) [2024-11-24 00:53:39,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 287 transitions. [2024-11-24 00:53:39,159 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 287 transitions. Word has length 146 [2024-11-24 00:53:39,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:53:39,163 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 287 transitions. [2024-11-24 00:53:39,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) [2024-11-24 00:53:39,164 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 287 transitions. [2024-11-24 00:53:39,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-24 00:53:39,168 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:53:39,169 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:53:39,193 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-24 00:53:39,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-24 00:53:39,370 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:53:39,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:53:39,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1107038935, now seen corresponding path program 1 times [2024-11-24 00:53:39,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:53:39,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964476091] [2024-11-24 00:53:39,370 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:53:39,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:53:43,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:53:48,642 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-11-24 00:53:48,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:53:48,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964476091] [2024-11-24 00:53:48,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964476091] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:53:48,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:53:48,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-24 00:53:48,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51360591] [2024-11-24 00:53:48,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:53:48,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-24 00:53:48,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:53:48,644 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-24 00:53:48,644 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-11-24 00:53:48,645 INFO L87 Difference]: Start difference. First operand 238 states and 287 transitions. Second operand has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 12 states have internal predecessors, (68), 6 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) [2024-11-24 00:53:51,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:53:51,398 INFO L93 Difference]: Finished difference Result 252 states and 301 transitions. [2024-11-24 00:53:51,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-24 00:53:51,398 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 12 states have internal predecessors, (68), 6 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) Word has length 153 [2024-11-24 00:53:51,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:53:51,400 INFO L225 Difference]: With dead ends: 252 [2024-11-24 00:53:51,400 INFO L226 Difference]: Without dead ends: 238 [2024-11-24 00:53:51,401 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2024-11-24 00:53:51,401 INFO L435 NwaCegarLoop]: 161 mSDtfsCounter, 10 mSDsluCounter, 1406 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1567 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:53:51,402 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 1567 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-24 00:53:51,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-11-24 00:53:51,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2024-11-24 00:53:51,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 150 states have (on average 1.12) internal successors, (168), 154 states have internal predecessors, (168), 58 states have call successors, (58), 27 states have call predecessors, (58), 29 states have return successors, (60), 57 states have call predecessors, (60), 56 states have call successors, (60) [2024-11-24 00:53:51,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 286 transitions. [2024-11-24 00:53:51,425 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 286 transitions. Word has length 153 [2024-11-24 00:53:51,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:53:51,426 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 286 transitions. [2024-11-24 00:53:51,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 12 states have internal predecessors, (68), 6 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) [2024-11-24 00:53:51,426 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 286 transitions. [2024-11-24 00:53:51,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-24 00:53:51,429 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:53:51,429 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:53:51,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-24 00:53:51,429 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:53:51,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:53:51,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1177093399, now seen corresponding path program 1 times [2024-11-24 00:53:51,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:53:51,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319714251] [2024-11-24 00:53:51,430 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:53:51,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:53:56,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:01,573 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-11-24 00:54:01,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:01,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319714251] [2024-11-24 00:54:01,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319714251] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:54:01,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:54:01,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-24 00:54:01,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348426174] [2024-11-24 00:54:01,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:54:01,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-24 00:54:01,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:01,575 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-24 00:54:01,576 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-11-24 00:54:01,576 INFO L87 Difference]: Start difference. First operand 238 states and 286 transitions. Second operand has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 13 states have internal predecessors, (69), 7 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) [2024-11-24 00:54:04,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:04,601 INFO L93 Difference]: Finished difference Result 252 states and 300 transitions. [2024-11-24 00:54:04,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-24 00:54:04,602 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 13 states have internal predecessors, (69), 7 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) Word has length 154 [2024-11-24 00:54:04,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:04,605 INFO L225 Difference]: With dead ends: 252 [2024-11-24 00:54:04,605 INFO L226 Difference]: Without dead ends: 238 [2024-11-24 00:54:04,605 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2024-11-24 00:54:04,606 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 26 mSDsluCounter, 1562 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 1729 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:54:04,606 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 1729 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-24 00:54:04,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-11-24 00:54:04,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2024-11-24 00:54:04,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 150 states have (on average 1.12) internal successors, (168), 154 states have internal predecessors, (168), 58 states have call successors, (58), 27 states have call predecessors, (58), 29 states have return successors, (59), 57 states have call predecessors, (59), 56 states have call successors, (59) [2024-11-24 00:54:04,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 285 transitions. [2024-11-24 00:54:04,636 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 285 transitions. Word has length 154 [2024-11-24 00:54:04,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:54:04,637 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 285 transitions. [2024-11-24 00:54:04,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 13 states have internal predecessors, (69), 7 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) [2024-11-24 00:54:04,638 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 285 transitions. [2024-11-24 00:54:04,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-24 00:54:04,641 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:54:04,642 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:04,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-24 00:54:04,642 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:54:04,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:04,643 INFO L85 PathProgramCache]: Analyzing trace with hash 55313866, now seen corresponding path program 1 times [2024-11-24 00:54:04,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:04,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306514700] [2024-11-24 00:54:04,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:04,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:10,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:13,377 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 3 proven. 21 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-11-24 00:54:13,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:13,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306514700] [2024-11-24 00:54:13,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306514700] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:54:13,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276736315] [2024-11-24 00:54:13,377 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:13,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:54:13,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:54:13,381 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:54:13,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-24 00:54:21,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:21,264 INFO L256 TraceCheckSpWp]: Trace formula consists of 4603 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-24 00:54:21,269 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:54:21,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-24 00:54:22,787 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-24 00:54:22,787 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:54:22,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276736315] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:54:22,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:54:22,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [7] total 15 [2024-11-24 00:54:22,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667313425] [2024-11-24 00:54:22,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:54:22,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-24 00:54:22,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:22,789 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-24 00:54:22,789 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2024-11-24 00:54:22,789 INFO L87 Difference]: Start difference. First operand 238 states and 285 transitions. Second operand has 13 states, 12 states have (on average 8.333333333333334) internal successors, (100), 10 states have internal predecessors, (100), 4 states have call successors, (27), 2 states have call predecessors, (27), 6 states have return successors, (26), 6 states have call predecessors, (26), 4 states have call successors, (26) [2024-11-24 00:54:24,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:54:24,280 INFO L93 Difference]: Finished difference Result 400 states and 482 transitions. [2024-11-24 00:54:24,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-24 00:54:24,281 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 8.333333333333334) internal successors, (100), 10 states have internal predecessors, (100), 4 states have call successors, (27), 2 states have call predecessors, (27), 6 states have return successors, (26), 6 states have call predecessors, (26), 4 states have call successors, (26) Word has length 166 [2024-11-24 00:54:24,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:54:24,284 INFO L225 Difference]: With dead ends: 400 [2024-11-24 00:54:24,284 INFO L226 Difference]: Without dead ends: 251 [2024-11-24 00:54:24,285 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2024-11-24 00:54:24,285 INFO L435 NwaCegarLoop]: 152 mSDtfsCounter, 13 mSDsluCounter, 1478 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 1630 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-24 00:54:24,285 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 1630 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-24 00:54:24,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2024-11-24 00:54:24,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 248. [2024-11-24 00:54:24,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 157 states have (on average 1.1146496815286624) internal successors, (175), 162 states have internal predecessors, (175), 58 states have call successors, (58), 27 states have call predecessors, (58), 32 states have return successors, (67), 59 states have call predecessors, (67), 56 states have call successors, (67) [2024-11-24 00:54:24,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 300 transitions. [2024-11-24 00:54:24,312 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 300 transitions. Word has length 166 [2024-11-24 00:54:24,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:54:24,312 INFO L471 AbstractCegarLoop]: Abstraction has 248 states and 300 transitions. [2024-11-24 00:54:24,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 8.333333333333334) internal successors, (100), 10 states have internal predecessors, (100), 4 states have call successors, (27), 2 states have call predecessors, (27), 6 states have return successors, (26), 6 states have call predecessors, (26), 4 states have call successors, (26) [2024-11-24 00:54:24,313 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 300 transitions. [2024-11-24 00:54:24,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-24 00:54:24,316 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:54:24,317 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:54:24,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-24 00:54:24,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:54:24,518 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:54:24,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:54:24,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1789043383, now seen corresponding path program 1 times [2024-11-24 00:54:24,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:54:24,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784577883] [2024-11-24 00:54:24,519 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:24,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:54:30,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:33,191 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 3 proven. 21 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-11-24 00:54:33,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:54:33,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784577883] [2024-11-24 00:54:33,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784577883] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:54:33,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773434301] [2024-11-24 00:54:33,192 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:54:33,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:54:33,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:54:33,194 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:54:33,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-24 00:54:41,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:54:41,744 INFO L256 TraceCheckSpWp]: Trace formula consists of 4609 conjuncts, 99 conjuncts are in the unsatisfiable core [2024-11-24 00:54:41,755 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:54:41,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-24 00:54:43,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 1 [2024-11-24 00:54:43,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-24 00:54:43,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-24 00:54:48,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 38 [2024-11-24 00:54:48,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 38 [2024-11-24 00:54:48,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 30 [2024-11-24 00:54:48,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2024-11-24 00:54:48,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 30 [2024-11-24 00:54:48,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2024-11-24 00:54:52,352 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 85 proven. 7 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-24 00:54:52,352 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:54:55,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773434301] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:54:55,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 00:54:55,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 21] total 26 [2024-11-24 00:54:55,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606884456] [2024-11-24 00:54:55,964 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 00:54:55,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-24 00:54:55,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:54:55,966 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-24 00:54:55,966 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=847, Unknown=0, NotChecked=0, Total=930 [2024-11-24 00:54:55,967 INFO L87 Difference]: Start difference. First operand 248 states and 300 transitions. Second operand has 26 states, 23 states have (on average 6.217391304347826) internal successors, (143), 25 states have internal predecessors, (143), 12 states have call successors, (43), 3 states have call predecessors, (43), 10 states have return successors, (43), 10 states have call predecessors, (43), 12 states have call successors, (43) [2024-11-24 00:55:01,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:55:01,324 INFO L93 Difference]: Finished difference Result 477 states and 579 transitions. [2024-11-24 00:55:01,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 00:55:01,325 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 23 states have (on average 6.217391304347826) internal successors, (143), 25 states have internal predecessors, (143), 12 states have call successors, (43), 3 states have call predecessors, (43), 10 states have return successors, (43), 10 states have call predecessors, (43), 12 states have call successors, (43) Word has length 169 [2024-11-24 00:55:01,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:55:01,327 INFO L225 Difference]: With dead ends: 477 [2024-11-24 00:55:01,327 INFO L226 Difference]: Without dead ends: 248 [2024-11-24 00:55:01,329 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 152 SyntacticMatches, 8 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=97, Invalid=1025, Unknown=0, NotChecked=0, Total=1122 [2024-11-24 00:55:01,330 INFO L435 NwaCegarLoop]: 149 mSDtfsCounter, 16 mSDsluCounter, 2910 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 3059 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-24 00:55:01,330 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 3059 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-11-24 00:55:01,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2024-11-24 00:55:01,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2024-11-24 00:55:01,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 157 states have (on average 1.10828025477707) internal successors, (174), 162 states have internal predecessors, (174), 58 states have call successors, (58), 27 states have call predecessors, (58), 32 states have return successors, (66), 59 states have call predecessors, (66), 56 states have call successors, (66) [2024-11-24 00:55:01,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 298 transitions. [2024-11-24 00:55:01,352 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 298 transitions. Word has length 169 [2024-11-24 00:55:01,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:55:01,352 INFO L471 AbstractCegarLoop]: Abstraction has 248 states and 298 transitions. [2024-11-24 00:55:01,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 23 states have (on average 6.217391304347826) internal successors, (143), 25 states have internal predecessors, (143), 12 states have call successors, (43), 3 states have call predecessors, (43), 10 states have return successors, (43), 10 states have call predecessors, (43), 12 states have call successors, (43) [2024-11-24 00:55:01,353 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 298 transitions. [2024-11-24 00:55:01,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-24 00:55:01,354 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:55:01,354 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:55:01,387 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-24 00:55:01,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:55:01,556 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:55:01,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:55:01,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1485816640, now seen corresponding path program 1 times [2024-11-24 00:55:01,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:55:01,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066433642] [2024-11-24 00:55:01,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:01,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:55:07,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:08,876 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2024-11-24 00:55:08,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:55:08,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066433642] [2024-11-24 00:55:08,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066433642] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:55:08,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063439384] [2024-11-24 00:55:08,877 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:08,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:55:08,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:55:08,878 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:55:08,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-24 00:55:17,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:17,835 INFO L256 TraceCheckSpWp]: Trace formula consists of 4611 conjuncts, 123 conjuncts are in the unsatisfiable core [2024-11-24 00:55:17,843 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:55:17,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-24 00:55:24,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 00:55:24,864 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 60 [2024-11-24 00:55:24,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 74 [2024-11-24 00:55:24,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2024-11-24 00:55:24,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 21 [2024-11-24 00:55:24,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2024-11-24 00:55:24,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-11-24 00:55:24,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-11-24 00:55:24,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 33 [2024-11-24 00:55:25,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2024-11-24 00:55:31,027 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 90 proven. 11 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-24 00:55:31,027 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:55:40,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063439384] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:55:40,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 00:55:40,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 30] total 33 [2024-11-24 00:55:40,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344946041] [2024-11-24 00:55:40,100 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 00:55:40,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-24 00:55:40,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:55:40,101 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-24 00:55:40,102 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1755, Unknown=0, NotChecked=0, Total=1892 [2024-11-24 00:55:40,102 INFO L87 Difference]: Start difference. First operand 248 states and 298 transitions. Second operand has 33 states, 29 states have (on average 4.689655172413793) internal successors, (136), 29 states have internal predecessors, (136), 13 states have call successors, (39), 3 states have call predecessors, (39), 12 states have return successors, (39), 12 states have call predecessors, (39), 13 states have call successors, (39) [2024-11-24 00:56:02,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:56:02,683 INFO L93 Difference]: Finished difference Result 545 states and 644 transitions. [2024-11-24 00:56:02,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-24 00:56:02,684 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 29 states have (on average 4.689655172413793) internal successors, (136), 29 states have internal predecessors, (136), 13 states have call successors, (39), 3 states have call predecessors, (39), 12 states have return successors, (39), 12 states have call predecessors, (39), 13 states have call successors, (39) Word has length 170 [2024-11-24 00:56:02,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:56:02,686 INFO L225 Difference]: With dead ends: 545 [2024-11-24 00:56:02,686 INFO L226 Difference]: Without dead ends: 343 [2024-11-24 00:56:02,688 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 145 SyntacticMatches, 4 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 923 ImplicationChecksByTransitivity, 21.1s TimeCoverageRelationStatistics Valid=306, Invalid=4250, Unknown=0, NotChecked=0, Total=4556 [2024-11-24 00:56:02,688 INFO L435 NwaCegarLoop]: 231 mSDtfsCounter, 108 mSDsluCounter, 3792 mSDsCounter, 0 mSdLazyCounter, 1917 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 4023 SdHoareTripleChecker+Invalid, 1936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time [2024-11-24 00:56:02,689 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 4023 Invalid, 1936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1917 Invalid, 0 Unknown, 0 Unchecked, 14.9s Time] [2024-11-24 00:56:02,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2024-11-24 00:56:02,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 331. [2024-11-24 00:56:02,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 215 states have (on average 1.1023255813953488) internal successors, (237), 221 states have internal predecessors, (237), 70 states have call successors, (70), 40 states have call predecessors, (70), 45 states have return successors, (77), 70 states have call predecessors, (77), 67 states have call successors, (77) [2024-11-24 00:56:02,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 384 transitions. [2024-11-24 00:56:02,728 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 384 transitions. Word has length 170 [2024-11-24 00:56:02,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:56:02,728 INFO L471 AbstractCegarLoop]: Abstraction has 331 states and 384 transitions. [2024-11-24 00:56:02,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 29 states have (on average 4.689655172413793) internal successors, (136), 29 states have internal predecessors, (136), 13 states have call successors, (39), 3 states have call predecessors, (39), 12 states have return successors, (39), 12 states have call predecessors, (39), 13 states have call successors, (39) [2024-11-24 00:56:02,728 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 384 transitions. [2024-11-24 00:56:02,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-24 00:56:02,730 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:56:02,730 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:56:02,762 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-24 00:56:02,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-24 00:56:02,931 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:56:02,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:56:02,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1205709657, now seen corresponding path program 1 times [2024-11-24 00:56:02,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:56:02,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005797965] [2024-11-24 00:56:02,932 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:56:02,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:56:09,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:56:14,941 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 15 proven. 16 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-24 00:56:14,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:56:14,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005797965] [2024-11-24 00:56:14,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005797965] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:56:14,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333500276] [2024-11-24 00:56:14,941 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:56:14,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:56:14,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:56:14,946 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:56:14,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-24 00:56:23,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:56:23,251 INFO L256 TraceCheckSpWp]: Trace formula consists of 4704 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-24 00:56:23,257 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:56:25,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-24 00:56:25,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-24 00:56:25,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 1 [2024-11-24 00:56:30,383 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 92 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-24 00:56:30,383 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:56:34,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333500276] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:56:34,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 00:56:34,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 19] total 29 [2024-11-24 00:56:34,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498160913] [2024-11-24 00:56:34,702 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 00:56:34,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-24 00:56:34,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:56:34,703 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-24 00:56:34,703 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=973, Unknown=0, NotChecked=0, Total=1056 [2024-11-24 00:56:34,704 INFO L87 Difference]: Start difference. First operand 331 states and 384 transitions. Second operand has 29 states, 23 states have (on average 6.782608695652174) internal successors, (156), 24 states have internal predecessors, (156), 10 states have call successors, (47), 3 states have call predecessors, (47), 11 states have return successors, (49), 10 states have call predecessors, (49), 10 states have call successors, (49) [2024-11-24 00:56:39,782 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=true, quantifiers [0] [2024-11-24 00:56:57,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:56:57,665 INFO L93 Difference]: Finished difference Result 462 states and 535 transitions. [2024-11-24 00:56:57,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-24 00:56:57,666 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 23 states have (on average 6.782608695652174) internal successors, (156), 24 states have internal predecessors, (156), 10 states have call successors, (47), 3 states have call predecessors, (47), 11 states have return successors, (49), 10 states have call predecessors, (49), 10 states have call successors, (49) Word has length 177 [2024-11-24 00:56:57,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:56:57,668 INFO L225 Difference]: With dead ends: 462 [2024-11-24 00:56:57,668 INFO L226 Difference]: Without dead ends: 333 [2024-11-24 00:56:57,670 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=181, Invalid=2269, Unknown=0, NotChecked=0, Total=2450 [2024-11-24 00:56:57,670 INFO L435 NwaCegarLoop]: 199 mSDtfsCounter, 138 mSDsluCounter, 4202 mSDsCounter, 0 mSdLazyCounter, 1929 mSolverCounterSat, 26 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 4401 SdHoareTripleChecker+Invalid, 1956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1929 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:56:57,670 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 4401 Invalid, 1956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1929 Invalid, 1 Unknown, 0 Unchecked, 18.4s Time] [2024-11-24 00:56:57,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2024-11-24 00:56:57,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 331. [2024-11-24 00:56:57,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 215 states have (on average 1.1023255813953488) internal successors, (237), 221 states have internal predecessors, (237), 70 states have call successors, (70), 40 states have call predecessors, (70), 45 states have return successors, (75), 70 states have call predecessors, (75), 67 states have call successors, (75) [2024-11-24 00:56:57,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 382 transitions. [2024-11-24 00:56:57,716 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 382 transitions. Word has length 177 [2024-11-24 00:56:57,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:56:57,716 INFO L471 AbstractCegarLoop]: Abstraction has 331 states and 382 transitions. [2024-11-24 00:56:57,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 23 states have (on average 6.782608695652174) internal successors, (156), 24 states have internal predecessors, (156), 10 states have call successors, (47), 3 states have call predecessors, (47), 11 states have return successors, (49), 10 states have call predecessors, (49), 10 states have call successors, (49) [2024-11-24 00:56:57,717 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 382 transitions. [2024-11-24 00:56:57,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-24 00:56:57,718 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:56:57,718 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:56:57,751 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-24 00:56:57,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-24 00:56:57,919 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:56:57,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:56:57,919 INFO L85 PathProgramCache]: Analyzing trace with hash -917277145, now seen corresponding path program 2 times [2024-11-24 00:56:57,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:56:57,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464352630] [2024-11-24 00:56:57,920 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:56:57,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:57:06,588 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:57:06,588 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:57:07,853 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-11-24 00:57:07,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:57:07,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464352630] [2024-11-24 00:57:07,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464352630] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:57:07,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307785148] [2024-11-24 00:57:07,854 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:57:07,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:57:07,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:57:07,856 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:57:07,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b30169de-b6db-46db-a3e4-4fe2005d6d50/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process