./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/heapsort.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f616bf14-9cbb-4678-bccc-1c3804724bfa/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f616bf14-9cbb-4678-bccc-1c3804724bfa/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f616bf14-9cbb-4678-bccc-1c3804724bfa/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f616bf14-9cbb-4678-bccc-1c3804724bfa/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-invgen/heapsort.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f616bf14-9cbb-4678-bccc-1c3804724bfa/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f616bf14-9cbb-4678-bccc-1c3804724bfa/bin/uautomizer-verify-aQ6SnzHsRB --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 32bit --witnessprinter.graph.data.programhash 8e7c8e5dc2a9e8f11b25d1bb9948f05f37b9553e3dc9f8bd8213088dea43cb37 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:05:42,950 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:05:43,025 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f616bf14-9cbb-4678-bccc-1c3804724bfa/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 03:05:43,031 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:05:43,031 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:05:43,057 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:05:43,058 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:05:43,058 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:05:43,058 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:05:43,058 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:05:43,059 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:05:43,059 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:05:43,059 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:05:43,059 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:05:43,059 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:05:43,060 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:05:43,060 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:05:43,060 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:05:43,060 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:05:43,060 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:05:43,060 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:05:43,060 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:05:43,060 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:05:43,060 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:05:43,060 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:05:43,061 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:05:43,061 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:05:43,061 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:05:43,061 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:05:43,061 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:05:43,061 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:05:43,062 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:05:43,062 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:05:43,062 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:05:43,062 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:05:43,062 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:05:43,062 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:05:43,062 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:05:43,063 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:05:43,063 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:05:43,063 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:05:43,063 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:05:43,063 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:05:43,063 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:05:43,063 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:05:43,064 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:05:43,064 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:05:43,064 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:05:43,064 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_f616bf14-9cbb-4678-bccc-1c3804724bfa/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e7c8e5dc2a9e8f11b25d1bb9948f05f37b9553e3dc9f8bd8213088dea43cb37 [2024-11-28 03:05:43,351 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:05:43,364 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:05:43,367 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:05:43,369 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:05:43,369 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:05:43,370 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f616bf14-9cbb-4678-bccc-1c3804724bfa/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/loop-invgen/heapsort.i [2024-11-28 03:05:46,505 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f616bf14-9cbb-4678-bccc-1c3804724bfa/bin/uautomizer-verify-aQ6SnzHsRB/data/fa9aa4b59/68913ff4e66d4f7e8f4333a58575a374/FLAGe57682315 [2024-11-28 03:05:46,723 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:05:46,723 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f616bf14-9cbb-4678-bccc-1c3804724bfa/sv-benchmarks/c/loop-invgen/heapsort.i [2024-11-28 03:05:46,729 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f616bf14-9cbb-4678-bccc-1c3804724bfa/bin/uautomizer-verify-aQ6SnzHsRB/data/fa9aa4b59/68913ff4e66d4f7e8f4333a58575a374/FLAGe57682315 [2024-11-28 03:05:46,741 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f616bf14-9cbb-4678-bccc-1c3804724bfa/bin/uautomizer-verify-aQ6SnzHsRB/data/fa9aa4b59/68913ff4e66d4f7e8f4333a58575a374 [2024-11-28 03:05:46,744 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:05:46,746 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:05:46,747 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:05:46,747 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:05:46,752 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:05:46,753 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:05:46" (1/1) ... [2024-11-28 03:05:46,754 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4902289f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:46, skipping insertion in model container [2024-11-28 03:05:46,754 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:05:46" (1/1) ... [2024-11-28 03:05:46,769 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:05:46,921 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_f616bf14-9cbb-4678-bccc-1c3804724bfa/sv-benchmarks/c/loop-invgen/heapsort.i[893,906] [2024-11-28 03:05:46,940 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:05:46,949 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:05:46,960 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_f616bf14-9cbb-4678-bccc-1c3804724bfa/sv-benchmarks/c/loop-invgen/heapsort.i[893,906] [2024-11-28 03:05:46,969 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:05:46,982 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:05:46,982 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:46 WrapperNode [2024-11-28 03:05:46,982 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:05:46,984 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:05:46,984 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:05:46,984 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:05:46,991 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:46" (1/1) ... [2024-11-28 03:05:47,001 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:46" (1/1) ... [2024-11-28 03:05:47,025 INFO L138 Inliner]: procedures = 16, calls = 20, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 76 [2024-11-28 03:05:47,025 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:05:47,026 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:05:47,026 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:05:47,026 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:05:47,038 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:46" (1/1) ... [2024-11-28 03:05:47,039 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:46" (1/1) ... [2024-11-28 03:05:47,040 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:46" (1/1) ... [2024-11-28 03:05:47,060 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 03:05:47,060 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:46" (1/1) ... [2024-11-28 03:05:47,060 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:46" (1/1) ... [2024-11-28 03:05:47,063 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:46" (1/1) ... [2024-11-28 03:05:47,064 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:46" (1/1) ... [2024-11-28 03:05:47,072 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:46" (1/1) ... [2024-11-28 03:05:47,076 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:46" (1/1) ... [2024-11-28 03:05:47,076 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:46" (1/1) ... [2024-11-28 03:05:47,078 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:05:47,078 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:05:47,079 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:05:47,079 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:05:47,083 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:46" (1/1) ... [2024-11-28 03:05:47,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:05:47,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f616bf14-9cbb-4678-bccc-1c3804724bfa/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:05:47,116 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f616bf14-9cbb-4678-bccc-1c3804724bfa/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:05:47,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f616bf14-9cbb-4678-bccc-1c3804724bfa/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:05:47,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:05:47,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:05:47,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:05:47,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:05:47,149 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 03:05:47,149 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 03:05:47,220 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:05:47,222 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:05:47,458 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-28 03:05:47,458 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:05:47,472 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:05:47,474 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 03:05:47,474 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:05:47 BoogieIcfgContainer [2024-11-28 03:05:47,474 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:05:47,478 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:05:47,478 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:05:47,484 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:05:47,484 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:05:46" (1/3) ... [2024-11-28 03:05:47,487 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fb01a26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:05:47, skipping insertion in model container [2024-11-28 03:05:47,487 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:05:46" (2/3) ... [2024-11-28 03:05:47,488 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fb01a26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:05:47, skipping insertion in model container [2024-11-28 03:05:47,488 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:05:47" (3/3) ... [2024-11-28 03:05:47,489 INFO L128 eAbstractionObserver]: Analyzing ICFG heapsort.i [2024-11-28 03:05:47,507 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:05:47,511 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG heapsort.i that has 2 procedures, 40 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-28 03:05:47,580 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:05:47,595 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;@87f98ea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:05:47,595 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 03:05:47,601 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 24 states have internal predecessors, (35), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-28 03:05:47,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-28 03:05:47,607 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:05:47,608 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:05:47,608 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:05:47,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:05:47,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1670619353, now seen corresponding path program 1 times [2024-11-28 03:05:47,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:05:47,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677449817] [2024-11-28 03:05:47,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:05:47,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:05:47,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:05:48,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:05:48,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:05:48,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677449817] [2024-11-28 03:05:48,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677449817] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:05:48,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:05:48,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:05:48,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033112932] [2024-11-28 03:05:48,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:05:48,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:05:48,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:05:48,044 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:05:48,044 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:05:48,047 INFO L87 Difference]: Start difference. First operand has 40 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 24 states have internal predecessors, (35), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:05:48,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:05:48,425 INFO L93 Difference]: Finished difference Result 120 states and 223 transitions. [2024-11-28 03:05:48,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:05:48,427 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-28 03:05:48,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:05:48,434 INFO L225 Difference]: With dead ends: 120 [2024-11-28 03:05:48,434 INFO L226 Difference]: Without dead ends: 74 [2024-11-28 03:05:48,438 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:05:48,441 INFO L435 NwaCegarLoop]: 54 mSDtfsCounter, 37 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:05:48,442 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 245 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:05:48,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-28 03:05:48,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 63. [2024-11-28 03:05:48,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 34 states have (on average 1.3529411764705883) internal successors, (46), 34 states have internal predecessors, (46), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-28 03:05:48,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 98 transitions. [2024-11-28 03:05:48,494 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 98 transitions. Word has length 12 [2024-11-28 03:05:48,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:05:48,494 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 98 transitions. [2024-11-28 03:05:48,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:05:48,494 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 98 transitions. [2024-11-28 03:05:48,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-28 03:05:48,498 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:05:48,499 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:05:48,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:05:48,500 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:05:48,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:05:48,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1577552269, now seen corresponding path program 1 times [2024-11-28 03:05:48,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:05:48,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56486281] [2024-11-28 03:05:48,501 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:05:48,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:05:48,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:05:48,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:05:48,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:05:48,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56486281] [2024-11-28 03:05:48,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56486281] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:05:48,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:05:48,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:05:48,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654815819] [2024-11-28 03:05:48,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:05:48,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:05:48,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:05:48,703 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:05:48,703 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:05:48,703 INFO L87 Difference]: Start difference. First operand 63 states and 98 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:05:48,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:05:48,822 INFO L93 Difference]: Finished difference Result 71 states and 105 transitions. [2024-11-28 03:05:48,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:05:48,823 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-28 03:05:48,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:05:48,825 INFO L225 Difference]: With dead ends: 71 [2024-11-28 03:05:48,825 INFO L226 Difference]: Without dead ends: 69 [2024-11-28 03:05:48,825 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:05:48,826 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 16 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:05:48,826 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 146 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:05:48,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-28 03:05:48,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2024-11-28 03:05:48,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 37 states have (on average 1.3243243243243243) internal successors, (49), 37 states have internal predecessors, (49), 26 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-28 03:05:48,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 101 transitions. [2024-11-28 03:05:48,858 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 101 transitions. Word has length 12 [2024-11-28 03:05:48,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:05:48,858 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 101 transitions. [2024-11-28 03:05:48,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:05:48,858 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 101 transitions. [2024-11-28 03:05:48,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-28 03:05:48,859 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:05:48,861 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:05:48,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:05:48,862 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:05:48,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:05:48,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1132358866, now seen corresponding path program 1 times [2024-11-28 03:05:48,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:05:48,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452396183] [2024-11-28 03:05:48,863 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:05:48,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:05:48,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:05:49,076 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:05:49,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:05:49,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452396183] [2024-11-28 03:05:49,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452396183] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:05:49,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:05:49,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 03:05:49,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284808343] [2024-11-28 03:05:49,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:05:49,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:05:49,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:05:49,078 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:05:49,078 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:05:49,078 INFO L87 Difference]: Start difference. First operand 67 states and 101 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 03:05:49,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:05:49,463 INFO L93 Difference]: Finished difference Result 148 states and 236 transitions. [2024-11-28 03:05:49,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:05:49,464 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-11-28 03:05:49,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:05:49,466 INFO L225 Difference]: With dead ends: 148 [2024-11-28 03:05:49,467 INFO L226 Difference]: Without dead ends: 146 [2024-11-28 03:05:49,470 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:05:49,471 INFO L435 NwaCegarLoop]: 66 mSDtfsCounter, 68 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:05:49,471 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 254 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:05:49,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-11-28 03:05:49,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 126. [2024-11-28 03:05:49,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 63 states have (on average 1.3968253968253967) internal successors, (88), 65 states have internal predecessors, (88), 58 states have call successors, (58), 4 states have call predecessors, (58), 4 states have return successors, (58), 56 states have call predecessors, (58), 58 states have call successors, (58) [2024-11-28 03:05:49,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 204 transitions. [2024-11-28 03:05:49,541 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 204 transitions. Word has length 17 [2024-11-28 03:05:49,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:05:49,542 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 204 transitions. [2024-11-28 03:05:49,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 03:05:49,543 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 204 transitions. [2024-11-28 03:05:49,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-28 03:05:49,544 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:05:49,545 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:05:49,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:05:49,545 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:05:49,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:05:49,546 INFO L85 PathProgramCache]: Analyzing trace with hash -96590013, now seen corresponding path program 1 times [2024-11-28 03:05:49,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:05:49,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530435785] [2024-11-28 03:05:49,547 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:05:49,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:05:49,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:05:49,775 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:05:49,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:05:49,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530435785] [2024-11-28 03:05:49,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530435785] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:05:49,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:05:49,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 03:05:49,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517733977] [2024-11-28 03:05:49,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:05:49,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:05:49,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:05:49,777 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:05:49,778 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:05:49,778 INFO L87 Difference]: Start difference. First operand 126 states and 204 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 03:05:50,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:05:50,067 INFO L93 Difference]: Finished difference Result 137 states and 216 transitions. [2024-11-28 03:05:50,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:05:50,068 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-11-28 03:05:50,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:05:50,071 INFO L225 Difference]: With dead ends: 137 [2024-11-28 03:05:50,071 INFO L226 Difference]: Without dead ends: 135 [2024-11-28 03:05:50,071 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:05:50,072 INFO L435 NwaCegarLoop]: 61 mSDtfsCounter, 56 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:05:50,073 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 226 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:05:50,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-11-28 03:05:50,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 132. [2024-11-28 03:05:50,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 66 states have (on average 1.378787878787879) internal successors, (91), 69 states have internal predecessors, (91), 60 states have call successors, (60), 5 states have call predecessors, (60), 5 states have return successors, (60), 57 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-28 03:05:50,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 211 transitions. [2024-11-28 03:05:50,121 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 211 transitions. Word has length 17 [2024-11-28 03:05:50,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:05:50,121 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 211 transitions. [2024-11-28 03:05:50,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 03:05:50,122 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 211 transitions. [2024-11-28 03:05:50,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-28 03:05:50,123 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:05:50,123 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:05:50,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 03:05:50,123 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:05:50,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:05:50,125 INFO L85 PathProgramCache]: Analyzing trace with hash 284772450, now seen corresponding path program 1 times [2024-11-28 03:05:50,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:05:50,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241275983] [2024-11-28 03:05:50,125 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:05:50,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:05:50,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:05:50,223 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:05:50,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:05:50,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241275983] [2024-11-28 03:05:50,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241275983] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:05:50,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:05:50,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:05:50,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809391609] [2024-11-28 03:05:50,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:05:50,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:05:50,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:05:50,226 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:05:50,226 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:05:50,227 INFO L87 Difference]: Start difference. First operand 132 states and 211 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 03:05:50,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:05:50,339 INFO L93 Difference]: Finished difference Result 138 states and 216 transitions. [2024-11-28 03:05:50,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:05:50,339 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-11-28 03:05:50,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:05:50,341 INFO L225 Difference]: With dead ends: 138 [2024-11-28 03:05:50,341 INFO L226 Difference]: Without dead ends: 136 [2024-11-28 03:05:50,342 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:05:50,342 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 15 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:05:50,343 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 146 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:05:50,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-28 03:05:50,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2024-11-28 03:05:50,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 69 states have (on average 1.3623188405797102) internal successors, (94), 72 states have internal predecessors, (94), 60 states have call successors, (60), 6 states have call predecessors, (60), 6 states have return successors, (60), 57 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-28 03:05:50,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 214 transitions. [2024-11-28 03:05:50,401 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 214 transitions. Word has length 17 [2024-11-28 03:05:50,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:05:50,401 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 214 transitions. [2024-11-28 03:05:50,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 03:05:50,402 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 214 transitions. [2024-11-28 03:05:50,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-28 03:05:50,402 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:05:50,402 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:05:50,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 03:05:50,403 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:05:50,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:05:50,403 INFO L85 PathProgramCache]: Analyzing trace with hash -2143476116, now seen corresponding path program 1 times [2024-11-28 03:05:50,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:05:50,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238309041] [2024-11-28 03:05:50,403 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:05:50,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:05:50,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:05:50,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:05:50,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:05:50,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238309041] [2024-11-28 03:05:50,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238309041] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:05:50,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:05:50,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:05:50,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280623064] [2024-11-28 03:05:50,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:05:50,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:05:50,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:05:50,480 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:05:50,480 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:05:50,481 INFO L87 Difference]: Start difference. First operand 136 states and 214 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 03:05:50,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:05:50,599 INFO L93 Difference]: Finished difference Result 214 states and 325 transitions. [2024-11-28 03:05:50,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:05:50,600 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-11-28 03:05:50,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:05:50,604 INFO L225 Difference]: With dead ends: 214 [2024-11-28 03:05:50,604 INFO L226 Difference]: Without dead ends: 121 [2024-11-28 03:05:50,607 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:05:50,608 INFO L435 NwaCegarLoop]: 57 mSDtfsCounter, 4 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:05:50,609 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 187 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:05:50,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-11-28 03:05:50,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 120. [2024-11-28 03:05:50,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 63 states have (on average 1.3333333333333333) internal successors, (84), 66 states have internal predecessors, (84), 50 states have call successors, (50), 6 states have call predecessors, (50), 6 states have return successors, (50), 47 states have call predecessors, (50), 50 states have call successors, (50) [2024-11-28 03:05:50,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 184 transitions. [2024-11-28 03:05:50,655 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 184 transitions. Word has length 17 [2024-11-28 03:05:50,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:05:50,656 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 184 transitions. [2024-11-28 03:05:50,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 03:05:50,656 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 184 transitions. [2024-11-28 03:05:50,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-28 03:05:50,659 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:05:50,659 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:05:50,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 03:05:50,660 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:05:50,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:05:50,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1107707263, now seen corresponding path program 1 times [2024-11-28 03:05:50,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:05:50,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696374545] [2024-11-28 03:05:50,660 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:05:50,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:05:50,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:05:50,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:05:50,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:05:50,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696374545] [2024-11-28 03:05:50,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696374545] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:05:50,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:05:50,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:05:50,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474571812] [2024-11-28 03:05:50,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:05:50,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:05:50,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:05:50,690 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:05:50,690 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:05:50,690 INFO L87 Difference]: Start difference. First operand 120 states and 184 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 03:05:50,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:05:50,776 INFO L93 Difference]: Finished difference Result 260 states and 409 transitions. [2024-11-28 03:05:50,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:05:50,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-11-28 03:05:50,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:05:50,780 INFO L225 Difference]: With dead ends: 260 [2024-11-28 03:05:50,781 INFO L226 Difference]: Without dead ends: 183 [2024-11-28 03:05:50,782 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 [2024-11-28 03:05:50,784 INFO L435 NwaCegarLoop]: 87 mSDtfsCounter, 11 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:05:50,785 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 141 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:05:50,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-28 03:05:50,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2024-11-28 03:05:50,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 90 states have (on average 1.3888888888888888) internal successors, (125), 94 states have internal predecessors, (125), 86 states have call successors, (86), 6 states have call predecessors, (86), 6 states have return successors, (86), 82 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-28 03:05:50,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 297 transitions. [2024-11-28 03:05:50,857 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 297 transitions. Word has length 17 [2024-11-28 03:05:50,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:05:50,858 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 297 transitions. [2024-11-28 03:05:50,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 03:05:50,858 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 297 transitions. [2024-11-28 03:05:50,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-28 03:05:50,861 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:05:50,861 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:05:50,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 03:05:50,861 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:05:50,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:05:50,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1881547471, now seen corresponding path program 1 times [2024-11-28 03:05:50,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:05:50,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403280970] [2024-11-28 03:05:50,862 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:05:50,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:05:50,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:05:50,972 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:05:50,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:05:50,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403280970] [2024-11-28 03:05:50,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403280970] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:05:50,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:05:50,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:05:50,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669598897] [2024-11-28 03:05:50,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:05:50,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:05:50,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:05:50,974 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:05:50,974 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:05:50,975 INFO L87 Difference]: Start difference. First operand 183 states and 297 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 03:05:51,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:05:51,194 INFO L93 Difference]: Finished difference Result 223 states and 354 transitions. [2024-11-28 03:05:51,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:05:51,194 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2024-11-28 03:05:51,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:05:51,197 INFO L225 Difference]: With dead ends: 223 [2024-11-28 03:05:51,197 INFO L226 Difference]: Without dead ends: 221 [2024-11-28 03:05:51,197 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:05:51,198 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 42 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:05:51,198 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 252 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:05:51,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2024-11-28 03:05:51,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 201. [2024-11-28 03:05:51,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 100 states have (on average 1.37) internal successors, (137), 106 states have internal predecessors, (137), 92 states have call successors, (92), 8 states have call predecessors, (92), 8 states have return successors, (92), 86 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-28 03:05:51,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 321 transitions. [2024-11-28 03:05:51,261 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 321 transitions. Word has length 24 [2024-11-28 03:05:51,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:05:51,261 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 321 transitions. [2024-11-28 03:05:51,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 03:05:51,261 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 321 transitions. [2024-11-28 03:05:51,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-28 03:05:51,263 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:05:51,264 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:05:51,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 03:05:51,264 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:05:51,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:05:51,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1959144818, now seen corresponding path program 1 times [2024-11-28 03:05:51,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:05:51,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242700505] [2024-11-28 03:05:51,265 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:05:51,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:05:51,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:05:51,372 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 03:05:51,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:05:51,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242700505] [2024-11-28 03:05:51,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242700505] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:05:51,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:05:51,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:05:51,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619364180] [2024-11-28 03:05:51,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:05:51,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:05:51,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:05:51,374 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:05:51,375 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:05:51,375 INFO L87 Difference]: Start difference. First operand 201 states and 321 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 03:05:51,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:05:51,638 INFO L93 Difference]: Finished difference Result 298 states and 480 transitions. [2024-11-28 03:05:51,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:05:51,639 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2024-11-28 03:05:51,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:05:51,642 INFO L225 Difference]: With dead ends: 298 [2024-11-28 03:05:51,642 INFO L226 Difference]: Without dead ends: 296 [2024-11-28 03:05:51,642 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:05:51,643 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 26 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:05:51,643 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 247 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:05:51,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2024-11-28 03:05:51,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 273. [2024-11-28 03:05:51,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 122 states have (on average 1.3688524590163935) internal successors, (167), 136 states have internal predecessors, (167), 140 states have call successors, (140), 10 states have call predecessors, (140), 10 states have return successors, (140), 126 states have call predecessors, (140), 140 states have call successors, (140) [2024-11-28 03:05:51,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 447 transitions. [2024-11-28 03:05:51,727 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 447 transitions. Word has length 27 [2024-11-28 03:05:51,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:05:51,731 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 447 transitions. [2024-11-28 03:05:51,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 03:05:51,731 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 447 transitions. [2024-11-28 03:05:51,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-28 03:05:51,732 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:05:51,732 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:05:51,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 03:05:51,733 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:05:51,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:05:51,733 INFO L85 PathProgramCache]: Analyzing trace with hash -758780940, now seen corresponding path program 1 times [2024-11-28 03:05:51,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:05:51,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109985879] [2024-11-28 03:05:51,734 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:05:51,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:05:51,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:05:51,842 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:05:51,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:05:51,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109985879] [2024-11-28 03:05:51,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109985879] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:05:51,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:05:51,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:05:51,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86611054] [2024-11-28 03:05:51,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:05:51,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:05:51,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:05:51,844 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:05:51,844 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:05:51,844 INFO L87 Difference]: Start difference. First operand 273 states and 447 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 03:05:52,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:05:52,282 INFO L93 Difference]: Finished difference Result 690 states and 1146 transitions. [2024-11-28 03:05:52,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:05:52,283 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2024-11-28 03:05:52,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:05:52,288 INFO L225 Difference]: With dead ends: 690 [2024-11-28 03:05:52,289 INFO L226 Difference]: Without dead ends: 477 [2024-11-28 03:05:52,290 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:05:52,291 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 67 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:05:52,294 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 116 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:05:52,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2024-11-28 03:05:52,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 273. [2024-11-28 03:05:52,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 122 states have (on average 1.3524590163934427) internal successors, (165), 136 states have internal predecessors, (165), 140 states have call successors, (140), 10 states have call predecessors, (140), 10 states have return successors, (140), 126 states have call predecessors, (140), 140 states have call successors, (140) [2024-11-28 03:05:52,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 445 transitions. [2024-11-28 03:05:52,400 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 445 transitions. Word has length 27 [2024-11-28 03:05:52,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:05:52,401 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 445 transitions. [2024-11-28 03:05:52,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 03:05:52,401 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 445 transitions. [2024-11-28 03:05:52,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-28 03:05:52,403 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:05:52,403 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:05:52,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 03:05:52,403 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:05:52,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:05:52,404 INFO L85 PathProgramCache]: Analyzing trace with hash -107882012, now seen corresponding path program 1 times [2024-11-28 03:05:52,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:05:52,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603859464] [2024-11-28 03:05:52,405 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:05:52,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:05:52,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:05:52,592 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 03:05:52,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:05:52,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603859464] [2024-11-28 03:05:52,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603859464] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:05:52,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:05:52,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 03:05:52,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462212286] [2024-11-28 03:05:52,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:05:52,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:05:52,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:05:52,594 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:05:52,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:05:52,594 INFO L87 Difference]: Start difference. First operand 273 states and 445 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 03:05:52,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:05:52,914 INFO L93 Difference]: Finished difference Result 324 states and 523 transitions. [2024-11-28 03:05:52,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:05:52,915 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2024-11-28 03:05:52,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:05:52,920 INFO L225 Difference]: With dead ends: 324 [2024-11-28 03:05:52,921 INFO L226 Difference]: Without dead ends: 322 [2024-11-28 03:05:52,921 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:05:52,922 INFO L435 NwaCegarLoop]: 49 mSDtfsCounter, 73 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:05:52,922 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 203 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:05:52,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2024-11-28 03:05:53,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 291. [2024-11-28 03:05:53,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 129 states have (on average 1.3488372093023255) internal successors, (174), 145 states have internal predecessors, (174), 150 states have call successors, (150), 11 states have call predecessors, (150), 11 states have return successors, (150), 134 states have call predecessors, (150), 150 states have call successors, (150) [2024-11-28 03:05:53,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 474 transitions. [2024-11-28 03:05:53,021 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 474 transitions. Word has length 29 [2024-11-28 03:05:53,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:05:53,021 INFO L471 AbstractCegarLoop]: Abstraction has 291 states and 474 transitions. [2024-11-28 03:05:53,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 03:05:53,021 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 474 transitions. [2024-11-28 03:05:53,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-28 03:05:53,023 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:05:53,023 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:05:53,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 03:05:53,024 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:05:53,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:05:53,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1849232789, now seen corresponding path program 1 times [2024-11-28 03:05:53,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:05:53,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329932106] [2024-11-28 03:05:53,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:05:53,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:05:53,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:05:53,168 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-28 03:05:53,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:05:53,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329932106] [2024-11-28 03:05:53,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329932106] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:05:53,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:05:53,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 03:05:53,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260873371] [2024-11-28 03:05:53,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:05:53,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:05:53,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:05:53,170 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:05:53,170 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:05:53,170 INFO L87 Difference]: Start difference. First operand 291 states and 474 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:05:53,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:05:53,478 INFO L93 Difference]: Finished difference Result 339 states and 537 transitions. [2024-11-28 03:05:53,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:05:53,479 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 39 [2024-11-28 03:05:53,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:05:53,482 INFO L225 Difference]: With dead ends: 339 [2024-11-28 03:05:53,482 INFO L226 Difference]: Without dead ends: 337 [2024-11-28 03:05:53,483 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:05:53,483 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 38 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:05:53,483 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 244 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:05:53,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2024-11-28 03:05:53,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 295. [2024-11-28 03:05:53,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 132 states have (on average 1.3409090909090908) internal successors, (177), 148 states have internal predecessors, (177), 150 states have call successors, (150), 12 states have call predecessors, (150), 12 states have return successors, (150), 134 states have call predecessors, (150), 150 states have call successors, (150) [2024-11-28 03:05:53,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 477 transitions. [2024-11-28 03:05:53,578 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 477 transitions. Word has length 39 [2024-11-28 03:05:53,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:05:53,579 INFO L471 AbstractCegarLoop]: Abstraction has 295 states and 477 transitions. [2024-11-28 03:05:53,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 03:05:53,579 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 477 transitions. [2024-11-28 03:05:53,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-28 03:05:53,580 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:05:53,580 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:05:53,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 03:05:53,580 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:05:53,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:05:53,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1130646140, now seen corresponding path program 1 times [2024-11-28 03:05:53,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:05:53,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575370880] [2024-11-28 03:05:53,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:05:53,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:05:53,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:05:53,704 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 03:05:53,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:05:53,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575370880] [2024-11-28 03:05:53,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575370880] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:05:53,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:05:53,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 03:05:53,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364623175] [2024-11-28 03:05:53,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:05:53,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:05:53,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:05:53,706 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:05:53,706 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:05:53,706 INFO L87 Difference]: Start difference. First operand 295 states and 477 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 03:05:53,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:05:53,962 INFO L93 Difference]: Finished difference Result 320 states and 509 transitions. [2024-11-28 03:05:53,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:05:53,962 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 40 [2024-11-28 03:05:53,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:05:53,966 INFO L225 Difference]: With dead ends: 320 [2024-11-28 03:05:53,966 INFO L226 Difference]: Without dead ends: 318 [2024-11-28 03:05:53,966 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:05:53,967 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 30 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:05:53,967 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 165 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:05:53,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2024-11-28 03:05:54,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 299. [2024-11-28 03:05:54,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 135 states have (on average 1.3333333333333333) internal successors, (180), 151 states have internal predecessors, (180), 150 states have call successors, (150), 13 states have call predecessors, (150), 13 states have return successors, (150), 134 states have call predecessors, (150), 150 states have call successors, (150) [2024-11-28 03:05:54,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 480 transitions. [2024-11-28 03:05:54,066 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 480 transitions. Word has length 40 [2024-11-28 03:05:54,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:05:54,067 INFO L471 AbstractCegarLoop]: Abstraction has 299 states and 480 transitions. [2024-11-28 03:05:54,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 03:05:54,067 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 480 transitions. [2024-11-28 03:05:54,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-28 03:05:54,068 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:05:54,068 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:05:54,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 03:05:54,069 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:05:54,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:05:54,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1957588978, now seen corresponding path program 1 times [2024-11-28 03:05:54,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:05:54,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849757510] [2024-11-28 03:05:54,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:05:54,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:05:54,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:05:54,206 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-28 03:05:54,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:05:54,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849757510] [2024-11-28 03:05:54,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849757510] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:05:54,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:05:54,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 03:05:54,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836580045] [2024-11-28 03:05:54,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:05:54,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:05:54,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:05:54,208 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:05:54,208 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:05:54,209 INFO L87 Difference]: Start difference. First operand 299 states and 480 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-28 03:05:54,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:05:54,416 INFO L93 Difference]: Finished difference Result 336 states and 532 transitions. [2024-11-28 03:05:54,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:05:54,417 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 52 [2024-11-28 03:05:54,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:05:54,420 INFO L225 Difference]: With dead ends: 336 [2024-11-28 03:05:54,420 INFO L226 Difference]: Without dead ends: 334 [2024-11-28 03:05:54,421 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:05:54,421 INFO L435 NwaCegarLoop]: 49 mSDtfsCounter, 41 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:05:54,421 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 210 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:05:54,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2024-11-28 03:05:54,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 176. [2024-11-28 03:05:54,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 87 states have (on average 1.264367816091954) internal successors, (110), 95 states have internal predecessors, (110), 76 states have call successors, (76), 12 states have call predecessors, (76), 12 states have return successors, (76), 68 states have call predecessors, (76), 76 states have call successors, (76) [2024-11-28 03:05:54,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 262 transitions. [2024-11-28 03:05:54,488 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 262 transitions. Word has length 52 [2024-11-28 03:05:54,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:05:54,489 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 262 transitions. [2024-11-28 03:05:54,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-28 03:05:54,489 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 262 transitions. [2024-11-28 03:05:54,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-28 03:05:54,491 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:05:54,491 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 8, 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] [2024-11-28 03:05:54,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 03:05:54,491 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:05:54,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:05:54,492 INFO L85 PathProgramCache]: Analyzing trace with hash 123050166, now seen corresponding path program 1 times [2024-11-28 03:05:54,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:05:54,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623714496] [2024-11-28 03:05:54,492 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:05:54,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:05:54,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:05:54,625 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-28 03:05:54,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:05:54,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623714496] [2024-11-28 03:05:54,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623714496] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:05:54,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406537481] [2024-11-28 03:05:54,627 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:05:54,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:05:54,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f616bf14-9cbb-4678-bccc-1c3804724bfa/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:05:54,631 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f616bf14-9cbb-4678-bccc-1c3804724bfa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:05:54,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f616bf14-9cbb-4678-bccc-1c3804724bfa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:05:54,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:05:54,692 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:05:54,697 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:05:54,828 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-28 03:05:54,829 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:05:54,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406537481] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:05:54,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:05:54,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 9 [2024-11-28 03:05:54,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617108832] [2024-11-28 03:05:54,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:05:54,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:05:54,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:05:54,833 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:05:54,833 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:05:54,833 INFO L87 Difference]: Start difference. First operand 176 states and 262 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 03:05:55,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:05:55,165 INFO L93 Difference]: Finished difference Result 511 states and 805 transitions. [2024-11-28 03:05:55,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:05:55,166 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 59 [2024-11-28 03:05:55,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:05:55,170 INFO L225 Difference]: With dead ends: 511 [2024-11-28 03:05:55,170 INFO L226 Difference]: Without dead ends: 339 [2024-11-28 03:05:55,172 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:05:55,172 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 38 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:05:55,173 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 167 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:05:55,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2024-11-28 03:05:55,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 315. [2024-11-28 03:05:55,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 140 states have (on average 1.3357142857142856) internal successors, (187), 156 states have internal predecessors, (187), 162 states have call successors, (162), 12 states have call predecessors, (162), 12 states have return successors, (162), 146 states have call predecessors, (162), 162 states have call successors, (162) [2024-11-28 03:05:55,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 511 transitions. [2024-11-28 03:05:55,302 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 511 transitions. Word has length 59 [2024-11-28 03:05:55,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:05:55,303 INFO L471 AbstractCegarLoop]: Abstraction has 315 states and 511 transitions. [2024-11-28 03:05:55,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 03:05:55,304 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 511 transitions. [2024-11-28 03:05:55,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-28 03:05:55,308 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:05:55,308 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 12, 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] [2024-11-28 03:05:55,318 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f616bf14-9cbb-4678-bccc-1c3804724bfa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 03:05:55,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f616bf14-9cbb-4678-bccc-1c3804724bfa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:05:55,509 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:05:55,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:05:55,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1998927832, now seen corresponding path program 1 times [2024-11-28 03:05:55,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:05:55,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720713304] [2024-11-28 03:05:55,510 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:05:55,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:05:55,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:05:55,714 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-28 03:05:55,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:05:55,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720713304] [2024-11-28 03:05:55,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720713304] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:05:55,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002920687] [2024-11-28 03:05:55,715 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:05:55,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:05:55,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f616bf14-9cbb-4678-bccc-1c3804724bfa/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:05:55,721 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f616bf14-9cbb-4678-bccc-1c3804724bfa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:05:55,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f616bf14-9cbb-4678-bccc-1c3804724bfa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:05:55,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:05:55,793 INFO L256 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:05:55,796 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:05:56,112 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2024-11-28 03:05:56,114 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:05:56,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002920687] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:05:56,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:05:56,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2024-11-28 03:05:56,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516519148] [2024-11-28 03:05:56,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:05:56,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:05:56,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:05:56,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:05:56,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:05:56,116 INFO L87 Difference]: Start difference. First operand 315 states and 511 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-28 03:05:56,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:05:56,567 INFO L93 Difference]: Finished difference Result 589 states and 936 transitions. [2024-11-28 03:05:56,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:05:56,568 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 81 [2024-11-28 03:05:56,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:05:56,572 INFO L225 Difference]: With dead ends: 589 [2024-11-28 03:05:56,572 INFO L226 Difference]: Without dead ends: 310 [2024-11-28 03:05:56,575 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2024-11-28 03:05:56,577 INFO L435 NwaCegarLoop]: 66 mSDtfsCounter, 32 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:05:56,578 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 180 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:05:56,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2024-11-28 03:05:56,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 271. [2024-11-28 03:05:56,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 128 states have (on average 1.3046875) internal successors, (167), 140 states have internal predecessors, (167), 130 states have call successors, (130), 12 states have call predecessors, (130), 12 states have return successors, (130), 118 states have call predecessors, (130), 130 states have call successors, (130) [2024-11-28 03:05:56,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 427 transitions. [2024-11-28 03:05:56,703 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 427 transitions. Word has length 81 [2024-11-28 03:05:56,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:05:56,704 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 427 transitions. [2024-11-28 03:05:56,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-28 03:05:56,704 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 427 transitions. [2024-11-28 03:05:56,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-28 03:05:56,706 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:05:56,706 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 12, 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] [2024-11-28 03:05:56,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f616bf14-9cbb-4678-bccc-1c3804724bfa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 03:05:56,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f616bf14-9cbb-4678-bccc-1c3804724bfa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:05:56,907 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:05:56,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:05:56,907 INFO L85 PathProgramCache]: Analyzing trace with hash -757699434, now seen corresponding path program 1 times [2024-11-28 03:05:56,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:05:56,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879069774] [2024-11-28 03:05:56,907 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:05:56,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:05:56,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:05:57,055 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-28 03:05:57,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:05:57,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879069774] [2024-11-28 03:05:57,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879069774] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:05:57,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394288001] [2024-11-28 03:05:57,056 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:05:57,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:05:57,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f616bf14-9cbb-4678-bccc-1c3804724bfa/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:05:57,058 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f616bf14-9cbb-4678-bccc-1c3804724bfa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:05:57,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f616bf14-9cbb-4678-bccc-1c3804724bfa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:05:57,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:05:57,138 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:05:57,140 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:05:57,382 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2024-11-28 03:05:57,382 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:05:57,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394288001] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:05:57,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:05:57,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-28 03:05:57,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254691928] [2024-11-28 03:05:57,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:05:57,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:05:57,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:05:57,383 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:05:57,384 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:05:57,384 INFO L87 Difference]: Start difference. First operand 271 states and 427 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-28 03:05:57,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:05:57,665 INFO L93 Difference]: Finished difference Result 505 states and 788 transitions. [2024-11-28 03:05:57,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:05:57,666 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 81 [2024-11-28 03:05:57,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:05:57,669 INFO L225 Difference]: With dead ends: 505 [2024-11-28 03:05:57,669 INFO L226 Difference]: Without dead ends: 224 [2024-11-28 03:05:57,671 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:05:57,671 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 22 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:05:57,671 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 149 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:05:57,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-11-28 03:05:57,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 213. [2024-11-28 03:05:57,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 102 states have (on average 1.2745098039215685) internal successors, (130), 112 states have internal predecessors, (130), 98 states have call successors, (98), 12 states have call predecessors, (98), 12 states have return successors, (98), 88 states have call predecessors, (98), 98 states have call successors, (98) [2024-11-28 03:05:57,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 326 transitions. [2024-11-28 03:05:57,738 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 326 transitions. Word has length 81 [2024-11-28 03:05:57,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:05:57,739 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 326 transitions. [2024-11-28 03:05:57,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-28 03:05:57,739 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 326 transitions. [2024-11-28 03:05:57,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-28 03:05:57,741 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:05:57,741 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:05:57,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f616bf14-9cbb-4678-bccc-1c3804724bfa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 03:05:57,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f616bf14-9cbb-4678-bccc-1c3804724bfa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 03:05:57,942 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:05:57,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:05:57,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1337700167, now seen corresponding path program 1 times [2024-11-28 03:05:57,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:05:57,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207926522] [2024-11-28 03:05:57,942 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:05:57,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:05:57,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:05:58,112 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 38 proven. 7 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-28 03:05:58,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:05:58,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207926522] [2024-11-28 03:05:58,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207926522] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:05:58,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241216781] [2024-11-28 03:05:58,112 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:05:58,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:05:58,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f616bf14-9cbb-4678-bccc-1c3804724bfa/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:05:58,115 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f616bf14-9cbb-4678-bccc-1c3804724bfa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:05:58,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f616bf14-9cbb-4678-bccc-1c3804724bfa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:05:58,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:05:58,185 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:05:58,187 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:05:58,294 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 150 proven. 2 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2024-11-28 03:05:58,294 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:05:58,468 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 38 proven. 2 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-11-28 03:05:58,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241216781] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:05:58,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:05:58,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 16 [2024-11-28 03:05:58,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441519388] [2024-11-28 03:05:58,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:05:58,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 03:05:58,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:05:58,469 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 03:05:58,469 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2024-11-28 03:05:58,470 INFO L87 Difference]: Start difference. First operand 213 states and 326 transitions. Second operand has 16 states, 16 states have (on average 3.75) internal successors, (60), 15 states have internal predecessors, (60), 7 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (32), 7 states have call predecessors, (32), 7 states have call successors, (32) [2024-11-28 03:06:00,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:06:00,283 INFO L93 Difference]: Finished difference Result 536 states and 796 transitions. [2024-11-28 03:06:00,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-28 03:06:00,284 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.75) internal successors, (60), 15 states have internal predecessors, (60), 7 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (32), 7 states have call predecessors, (32), 7 states have call successors, (32) Word has length 87 [2024-11-28 03:06:00,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:06:00,287 INFO L225 Difference]: With dead ends: 536 [2024-11-28 03:06:00,287 INFO L226 Difference]: Without dead ends: 364 [2024-11-28 03:06:00,289 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=549, Invalid=1613, Unknown=0, NotChecked=0, Total=2162 [2024-11-28 03:06:00,289 INFO L435 NwaCegarLoop]: 151 mSDtfsCounter, 203 mSDsluCounter, 917 mSDsCounter, 0 mSdLazyCounter, 887 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 1068 SdHoareTripleChecker+Invalid, 1121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:06:00,290 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 1068 Invalid, 1121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 887 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 03:06:00,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2024-11-28 03:06:00,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 247. [2024-11-28 03:06:00,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 127 states have (on average 1.2440944881889764) internal successors, (158), 137 states have internal predecessors, (158), 105 states have call successors, (105), 14 states have call predecessors, (105), 14 states have return successors, (105), 95 states have call predecessors, (105), 105 states have call successors, (105) [2024-11-28 03:06:00,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 368 transitions. [2024-11-28 03:06:00,387 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 368 transitions. Word has length 87 [2024-11-28 03:06:00,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:06:00,387 INFO L471 AbstractCegarLoop]: Abstraction has 247 states and 368 transitions. [2024-11-28 03:06:00,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.75) internal successors, (60), 15 states have internal predecessors, (60), 7 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (32), 7 states have call predecessors, (32), 7 states have call successors, (32) [2024-11-28 03:06:00,388 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 368 transitions. [2024-11-28 03:06:00,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-28 03:06:00,391 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:06:00,391 INFO L218 NwaCegarLoop]: trace histogram [18, 17, 17, 3, 3, 3, 3, 3, 3, 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] [2024-11-28 03:06:00,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f616bf14-9cbb-4678-bccc-1c3804724bfa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 03:06:00,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f616bf14-9cbb-4678-bccc-1c3804724bfa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 03:06:00,592 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:06:00,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:00,593 INFO L85 PathProgramCache]: Analyzing trace with hash -598118982, now seen corresponding path program 1 times [2024-11-28 03:06:00,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:00,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292507558] [2024-11-28 03:06:00,593 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:00,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:00,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:00,767 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 48 proven. 8 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-28 03:06:00,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:06:00,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292507558] [2024-11-28 03:06:00,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292507558] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:06:00,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340298047] [2024-11-28 03:06:00,767 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:00,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:06:00,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f616bf14-9cbb-4678-bccc-1c3804724bfa/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:06:00,772 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f616bf14-9cbb-4678-bccc-1c3804724bfa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:06:00,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f616bf14-9cbb-4678-bccc-1c3804724bfa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 03:06:00,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:00,848 INFO L256 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:06:00,851 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:06:01,125 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 211 proven. 7 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2024-11-28 03:06:01,125 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:06:01,395 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 48 proven. 8 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-28 03:06:01,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340298047] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:06:01,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:06:01,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2024-11-28 03:06:01,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368888629] [2024-11-28 03:06:01,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:06:01,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 03:06:01,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:06:01,397 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 03:06:01,397 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2024-11-28 03:06:01,398 INFO L87 Difference]: Start difference. First operand 247 states and 368 transitions. Second operand has 21 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 21 states have internal predecessors, (62), 12 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (46), 12 states have call predecessors, (46), 12 states have call successors, (46) [2024-11-28 03:06:04,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:06:04,389 INFO L93 Difference]: Finished difference Result 882 states and 1374 transitions. [2024-11-28 03:06:04,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-11-28 03:06:04,390 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 21 states have internal predecessors, (62), 12 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (46), 12 states have call predecessors, (46), 12 states have call successors, (46) Word has length 114 [2024-11-28 03:06:04,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:06:04,395 INFO L225 Difference]: With dead ends: 882 [2024-11-28 03:06:04,395 INFO L226 Difference]: Without dead ends: 499 [2024-11-28 03:06:04,398 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1075 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1036, Invalid=3124, Unknown=0, NotChecked=0, Total=4160 [2024-11-28 03:06:04,398 INFO L435 NwaCegarLoop]: 166 mSDtfsCounter, 282 mSDsluCounter, 905 mSDsCounter, 0 mSdLazyCounter, 1255 mSolverCounterSat, 354 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 1071 SdHoareTripleChecker+Invalid, 1609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 354 IncrementalHoareTripleChecker+Valid, 1255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:06:04,399 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 1071 Invalid, 1609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [354 Valid, 1255 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-28 03:06:04,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2024-11-28 03:06:04,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 377. [2024-11-28 03:06:04,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 177 states have (on average 1.2542372881355932) internal successors, (222), 191 states have internal predecessors, (222), 186 states have call successors, (186), 13 states have call predecessors, (186), 13 states have return successors, (186), 172 states have call predecessors, (186), 186 states have call successors, (186) [2024-11-28 03:06:04,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 594 transitions. [2024-11-28 03:06:04,564 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 594 transitions. Word has length 114 [2024-11-28 03:06:04,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:06:04,565 INFO L471 AbstractCegarLoop]: Abstraction has 377 states and 594 transitions. [2024-11-28 03:06:04,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 21 states have internal predecessors, (62), 12 states have call successors, (47), 2 states have call predecessors, (47), 2 states have return successors, (46), 12 states have call predecessors, (46), 12 states have call successors, (46) [2024-11-28 03:06:04,566 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 594 transitions. [2024-11-28 03:06:04,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-28 03:06:04,568 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:06:04,568 INFO L218 NwaCegarLoop]: trace histogram [18, 17, 17, 3, 3, 3, 3, 3, 3, 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] [2024-11-28 03:06:04,577 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f616bf14-9cbb-4678-bccc-1c3804724bfa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 03:06:04,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f616bf14-9cbb-4678-bccc-1c3804724bfa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:06:04,772 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:06:04,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:04,773 INFO L85 PathProgramCache]: Analyzing trace with hash 662798268, now seen corresponding path program 1 times [2024-11-28 03:06:04,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:04,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45718038] [2024-11-28 03:06:04,773 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:04,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:04,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:04,984 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 34 proven. 22 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-28 03:06:04,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:06:04,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45718038] [2024-11-28 03:06:04,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45718038] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:06:04,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313533616] [2024-11-28 03:06:04,985 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:06:04,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:06:04,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f616bf14-9cbb-4678-bccc-1c3804724bfa/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:06:04,987 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f616bf14-9cbb-4678-bccc-1c3804724bfa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:06:04,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f616bf14-9cbb-4678-bccc-1c3804724bfa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 03:06:05,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:06:05,068 INFO L256 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:06:05,071 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:06:05,323 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 34 proven. 22 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-28 03:06:05,323 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:06:05,589 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 34 proven. 22 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-28 03:06:05,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313533616] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:06:05,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:06:05,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2024-11-28 03:06:05,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909935667] [2024-11-28 03:06:05,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:06:05,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 03:06:05,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:06:05,592 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 03:06:05,592 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2024-11-28 03:06:05,592 INFO L87 Difference]: Start difference. First operand 377 states and 594 transitions. Second operand has 20 states, 20 states have (on average 3.5) internal successors, (70), 18 states have internal predecessors, (70), 8 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (47), 8 states have call predecessors, (47), 8 states have call successors, (47) [2024-11-28 03:06:07,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:06:07,605 INFO L93 Difference]: Finished difference Result 900 states and 1411 transitions. [2024-11-28 03:06:07,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 03:06:07,606 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.5) internal successors, (70), 18 states have internal predecessors, (70), 8 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (47), 8 states have call predecessors, (47), 8 states have call successors, (47) Word has length 114 [2024-11-28 03:06:07,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:06:07,612 INFO L225 Difference]: With dead ends: 900 [2024-11-28 03:06:07,612 INFO L226 Difference]: Without dead ends: 775 [2024-11-28 03:06:07,613 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 215 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=310, Invalid=1096, Unknown=0, NotChecked=0, Total=1406 [2024-11-28 03:06:07,616 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 360 mSDsluCounter, 923 mSDsCounter, 0 mSdLazyCounter, 979 mSolverCounterSat, 479 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 1050 SdHoareTripleChecker+Invalid, 1458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 479 IncrementalHoareTripleChecker+Valid, 979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:06:07,616 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 1050 Invalid, 1458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [479 Valid, 979 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 03:06:07,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2024-11-28 03:06:07,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 419. [2024-11-28 03:06:07,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 190 states have (on average 1.268421052631579) internal successors, (241), 212 states have internal predecessors, (241), 212 states have call successors, (212), 16 states have call predecessors, (212), 16 states have return successors, (212), 190 states have call predecessors, (212), 212 states have call successors, (212) [2024-11-28 03:06:07,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 665 transitions. [2024-11-28 03:06:07,819 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 665 transitions. Word has length 114 [2024-11-28 03:06:07,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:06:07,819 INFO L471 AbstractCegarLoop]: Abstraction has 419 states and 665 transitions. [2024-11-28 03:06:07,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.5) internal successors, (70), 18 states have internal predecessors, (70), 8 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (47), 8 states have call predecessors, (47), 8 states have call successors, (47) [2024-11-28 03:06:07,819 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 665 transitions. [2024-11-28 03:06:07,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2024-11-28 03:06:07,823 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:06:07,823 INFO L218 NwaCegarLoop]: trace histogram [32, 31, 31, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:06:07,833 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f616bf14-9cbb-4678-bccc-1c3804724bfa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 03:06:08,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f616bf14-9cbb-4678-bccc-1c3804724bfa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:06:08,028 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:06:08,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:06:08,029 INFO L85 PathProgramCache]: Analyzing trace with hash -370461783, now seen corresponding path program 2 times [2024-11-28 03:06:08,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:06:08,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407702455] [2024-11-28 03:06:08,029 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:06:08,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:06:08,061 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:06:08,061 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:06:08,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1987 backedges. 62 proven. 22 refuted. 0 times theorem prover too weak. 1903 trivial. 0 not checked. [2024-11-28 03:06:08,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:06:08,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407702455] [2024-11-28 03:06:08,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407702455] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:06:08,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815568008] [2024-11-28 03:06:08,369 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:06:08,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:06:08,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f616bf14-9cbb-4678-bccc-1c3804724bfa/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:06:08,371 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f616bf14-9cbb-4678-bccc-1c3804724bfa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:06:08,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f616bf14-9cbb-4678-bccc-1c3804724bfa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 03:06:08,477 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:06:08,477 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:06:08,480 INFO L256 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 03:06:08,483 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:06:08,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1987 backedges. 90 proven. 19 refuted. 0 times theorem prover too weak. 1878 trivial. 0 not checked. [2024-11-28 03:06:08,811 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:06:09,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1987 backedges. 87 proven. 22 refuted. 0 times theorem prover too weak. 1878 trivial. 0 not checked. [2024-11-28 03:06:09,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815568008] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:06:09,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:06:09,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2024-11-28 03:06:09,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510187865] [2024-11-28 03:06:09,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:06:09,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 03:06:09,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:06:09,205 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 03:06:09,205 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2024-11-28 03:06:09,206 INFO L87 Difference]: Start difference. First operand 419 states and 665 transitions. Second operand has 18 states, 18 states have (on average 4.5) internal successors, (81), 16 states have internal predecessors, (81), 8 states have call successors, (60), 3 states have call predecessors, (60), 1 states have return successors, (57), 8 states have call predecessors, (57), 8 states have call successors, (57) [2024-11-28 03:06:09,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:06:09,734 INFO L93 Difference]: Finished difference Result 443 states and 698 transitions. [2024-11-28 03:06:09,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 03:06:09,735 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.5) internal successors, (81), 16 states have internal predecessors, (81), 8 states have call successors, (60), 3 states have call predecessors, (60), 1 states have return successors, (57), 8 states have call predecessors, (57), 8 states have call successors, (57) Word has length 193 [2024-11-28 03:06:09,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:06:09,737 INFO L225 Difference]: With dead ends: 443 [2024-11-28 03:06:09,737 INFO L226 Difference]: Without dead ends: 0 [2024-11-28 03:06:09,739 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=169, Invalid=533, Unknown=0, NotChecked=0, Total=702 [2024-11-28 03:06:09,740 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 76 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:06:09,740 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 243 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:06:09,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-28 03:06:09,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-28 03:06:09,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:06:09,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-28 03:06:09,742 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 193 [2024-11-28 03:06:09,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:06:09,742 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-28 03:06:09,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.5) internal successors, (81), 16 states have internal predecessors, (81), 8 states have call successors, (60), 3 states have call predecessors, (60), 1 states have return successors, (57), 8 states have call predecessors, (57), 8 states have call successors, (57) [2024-11-28 03:06:09,743 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-28 03:06:09,743 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-28 03:06:09,745 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-28 03:06:09,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f616bf14-9cbb-4678-bccc-1c3804724bfa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 03:06:09,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f616bf14-9cbb-4678-bccc-1c3804724bfa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:06:09,959 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:06:09,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.