./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya --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 35b23af90f01e46e9f818578c532dc01a817e343291a24c8592db5f0da05a3c7 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-28 20:38:42,279 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-28 20:38:42,347 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-28 20:38:42,351 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-28 20:38:42,352 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-28 20:38:42,377 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-28 20:38:42,378 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-28 20:38:42,378 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-28 20:38:42,379 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-28 20:38:42,380 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-28 20:38:42,380 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-28 20:38:42,381 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-28 20:38:42,381 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-28 20:38:42,382 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-28 20:38:42,382 INFO L153 SettingsManager]: * Use SBE=true [2023-11-28 20:38:42,383 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-28 20:38:42,383 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-28 20:38:42,384 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-28 20:38:42,384 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-28 20:38:42,385 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-28 20:38:42,385 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-28 20:38:42,388 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-28 20:38:42,388 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-28 20:38:42,389 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-28 20:38:42,389 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-28 20:38:42,390 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-28 20:38:42,390 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-28 20:38:42,390 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-28 20:38:42,391 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-28 20:38:42,391 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-28 20:38:42,391 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-28 20:38:42,392 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 20:38:42,405 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-28 20:38:42,405 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-28 20:38:42,405 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-28 20:38:42,406 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-28 20:38:42,406 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-28 20:38:42,406 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-28 20:38:42,406 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-28 20:38:42,407 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-28 20:38:42,407 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-28 20:38:42,407 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-28 20:38:42,407 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 35b23af90f01e46e9f818578c532dc01a817e343291a24c8592db5f0da05a3c7 [2023-11-28 20:38:42,640 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-28 20:38:42,662 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-28 20:38:42,664 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-28 20:38:42,665 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-28 20:38:42,666 INFO L274 PluginConnector]: CDTParser initialized [2023-11-28 20:38:42,667 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c [2023-11-28 20:38:45,485 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-28 20:38:45,682 INFO L384 CDTParser]: Found 1 translation units. [2023-11-28 20:38:45,682 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c [2023-11-28 20:38:45,695 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/data/4b2f76343/69d3f97217b14798aca9ae5628935f98/FLAG30f334eea [2023-11-28 20:38:45,714 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/data/4b2f76343/69d3f97217b14798aca9ae5628935f98 [2023-11-28 20:38:45,717 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-28 20:38:45,719 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-28 20:38:45,720 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-28 20:38:45,720 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-28 20:38:45,726 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-28 20:38:45,727 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:38:45" (1/1) ... [2023-11-28 20:38:45,728 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29e974e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:45, skipping insertion in model container [2023-11-28 20:38:45,728 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:38:45" (1/1) ... [2023-11-28 20:38:45,771 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-28 20:38:45,995 WARN L240 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_fb497331-a53b-42ad-891c-123d29c5d057/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c[12042,12055] [2023-11-28 20:38:46,000 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 20:38:46,012 INFO L202 MainTranslator]: Completed pre-run [2023-11-28 20:38:46,071 WARN L240 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_fb497331-a53b-42ad-891c-123d29c5d057/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c[12042,12055] [2023-11-28 20:38:46,072 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 20:38:46,091 INFO L206 MainTranslator]: Completed translation [2023-11-28 20:38:46,091 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:46 WrapperNode [2023-11-28 20:38:46,091 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-28 20:38:46,092 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-28 20:38:46,093 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-28 20:38:46,093 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-28 20:38:46,101 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:46" (1/1) ... [2023-11-28 20:38:46,113 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:46" (1/1) ... [2023-11-28 20:38:46,146 INFO L138 Inliner]: procedures = 27, calls = 46, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 414 [2023-11-28 20:38:46,146 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-28 20:38:46,147 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-28 20:38:46,147 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-28 20:38:46,147 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-28 20:38:46,159 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:46" (1/1) ... [2023-11-28 20:38:46,159 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:46" (1/1) ... [2023-11-28 20:38:46,164 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:46" (1/1) ... [2023-11-28 20:38:46,180 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]. [2023-11-28 20:38:46,180 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:46" (1/1) ... [2023-11-28 20:38:46,180 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:46" (1/1) ... [2023-11-28 20:38:46,192 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:46" (1/1) ... [2023-11-28 20:38:46,198 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:46" (1/1) ... [2023-11-28 20:38:46,200 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:46" (1/1) ... [2023-11-28 20:38:46,203 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:46" (1/1) ... [2023-11-28 20:38:46,208 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-28 20:38:46,209 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-28 20:38:46,209 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-28 20:38:46,209 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-28 20:38:46,210 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:46" (1/1) ... [2023-11-28 20:38:46,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 20:38:46,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:38:46,245 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-28 20:38:46,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-28 20:38:46,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-28 20:38:46,285 INFO L130 BoogieDeclarations]: Found specification of procedure write_history_bool [2023-11-28 20:38:46,285 INFO L138 BoogieDeclarations]: Found implementation of procedure write_history_bool [2023-11-28 20:38:46,286 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-11-28 20:38:46,286 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-11-28 20:38:46,286 INFO L130 BoogieDeclarations]: Found specification of procedure read_history_int8 [2023-11-28 20:38:46,286 INFO L138 BoogieDeclarations]: Found implementation of procedure read_history_int8 [2023-11-28 20:38:46,286 INFO L130 BoogieDeclarations]: Found specification of procedure read_history_bool [2023-11-28 20:38:46,286 INFO L138 BoogieDeclarations]: Found implementation of procedure read_history_bool [2023-11-28 20:38:46,287 INFO L130 BoogieDeclarations]: Found specification of procedure add_history_type [2023-11-28 20:38:46,287 INFO L138 BoogieDeclarations]: Found implementation of procedure add_history_type [2023-11-28 20:38:46,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-28 20:38:46,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-28 20:38:46,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-28 20:38:46,394 INFO L241 CfgBuilder]: Building ICFG [2023-11-28 20:38:46,396 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-28 20:38:46,894 INFO L282 CfgBuilder]: Performing block encoding [2023-11-28 20:38:46,927 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-28 20:38:46,927 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-28 20:38:46,928 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:38:46 BoogieIcfgContainer [2023-11-28 20:38:46,928 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-28 20:38:46,931 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-28 20:38:46,932 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-28 20:38:46,935 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-28 20:38:46,935 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:38:45" (1/3) ... [2023-11-28 20:38:46,936 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@327662f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:38:46, skipping insertion in model container [2023-11-28 20:38:46,936 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:38:46" (2/3) ... [2023-11-28 20:38:46,937 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@327662f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:38:46, skipping insertion in model container [2023-11-28 20:38:46,937 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:38:46" (3/3) ... [2023-11-28 20:38:46,938 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c [2023-11-28 20:38:46,959 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-28 20:38:46,959 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-28 20:38:47,015 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 20:38:47,023 INFO L357 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, mHoare=true, 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;@7c72cc5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 20:38:47,023 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-28 20:38:47,029 INFO L276 IsEmpty]: Start isEmpty. Operand has 172 states, 133 states have (on average 1.6240601503759398) internal successors, (216), 137 states have internal predecessors, (216), 32 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-28 20:38:47,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-28 20:38:47,039 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:38:47,040 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:38:47,040 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:38:47,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:47,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1464316671, now seen corresponding path program 1 times [2023-11-28 20:38:47,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:47,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186290507] [2023-11-28 20:38:47,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:47,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:47,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:47,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:38:47,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:47,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186290507] [2023-11-28 20:38:47,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186290507] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:47,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:38:47,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:38:47,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676298228] [2023-11-28 20:38:47,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:47,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:38:47,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:47,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:38:47,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:38:47,323 INFO L87 Difference]: Start difference. First operand has 172 states, 133 states have (on average 1.6240601503759398) internal successors, (216), 137 states have internal predecessors, (216), 32 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:38:47,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:38:47,451 INFO L93 Difference]: Finished difference Result 350 states and 604 transitions. [2023-11-28 20:38:47,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:38:47,453 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-28 20:38:47,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:38:47,467 INFO L225 Difference]: With dead ends: 350 [2023-11-28 20:38:47,467 INFO L226 Difference]: Without dead ends: 178 [2023-11-28 20:38:47,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:38:47,477 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 18 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:38:47,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 775 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:38:47,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2023-11-28 20:38:47,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 176. [2023-11-28 20:38:47,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 137 states have (on average 1.5547445255474452) internal successors, (213), 140 states have internal predecessors, (213), 32 states have call successors, (32), 6 states have call predecessors, (32), 6 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-28 20:38:47,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 277 transitions. [2023-11-28 20:38:47,543 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 277 transitions. Word has length 14 [2023-11-28 20:38:47,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:38:47,543 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 277 transitions. [2023-11-28 20:38:47,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:38:47,544 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 277 transitions. [2023-11-28 20:38:47,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-28 20:38:47,547 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:38:47,547 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:38:47,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-28 20:38:47,547 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:38:47,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:47,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1895232951, now seen corresponding path program 1 times [2023-11-28 20:38:47,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:47,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474408559] [2023-11-28 20:38:47,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:47,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:47,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:47,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:38:47,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:47,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474408559] [2023-11-28 20:38:47,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474408559] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:47,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:38:47,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:38:47,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998804561] [2023-11-28 20:38:47,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:47,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:38:47,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:47,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:38:47,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:38:47,623 INFO L87 Difference]: Start difference. First operand 176 states and 277 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:38:47,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:38:47,694 INFO L93 Difference]: Finished difference Result 366 states and 578 transitions. [2023-11-28 20:38:47,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:38:47,694 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-28 20:38:47,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:38:47,698 INFO L225 Difference]: With dead ends: 366 [2023-11-28 20:38:47,698 INFO L226 Difference]: Without dead ends: 192 [2023-11-28 20:38:47,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:38:47,701 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 25 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:38:47,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 792 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:38:47,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2023-11-28 20:38:47,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 189. [2023-11-28 20:38:47,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 148 states have (on average 1.5337837837837838) internal successors, (227), 151 states have internal predecessors, (227), 33 states have call successors, (33), 7 states have call predecessors, (33), 7 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-28 20:38:47,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 293 transitions. [2023-11-28 20:38:47,727 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 293 transitions. Word has length 15 [2023-11-28 20:38:47,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:38:47,728 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 293 transitions. [2023-11-28 20:38:47,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 20:38:47,728 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 293 transitions. [2023-11-28 20:38:47,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-28 20:38:47,730 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:38:47,730 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:38:47,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-28 20:38:47,731 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:38:47,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:47,731 INFO L85 PathProgramCache]: Analyzing trace with hash -602557550, now seen corresponding path program 1 times [2023-11-28 20:38:47,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:47,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439846708] [2023-11-28 20:38:47,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:47,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:47,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:47,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:38:47,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:47,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:38:47,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:47,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439846708] [2023-11-28 20:38:47,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439846708] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:47,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:38:47,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:38:47,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149568329] [2023-11-28 20:38:47,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:47,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:38:47,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:47,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:38:47,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:38:47,819 INFO L87 Difference]: Start difference. First operand 189 states and 293 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-28 20:38:47,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:38:47,862 INFO L93 Difference]: Finished difference Result 398 states and 624 transitions. [2023-11-28 20:38:47,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:38:47,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2023-11-28 20:38:47,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:38:47,867 INFO L225 Difference]: With dead ends: 398 [2023-11-28 20:38:47,867 INFO L226 Difference]: Without dead ends: 218 [2023-11-28 20:38:47,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:38:47,870 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 22 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:38:47,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 532 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:38:47,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2023-11-28 20:38:47,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 191. [2023-11-28 20:38:47,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 150 states have (on average 1.5266666666666666) internal successors, (229), 153 states have internal predecessors, (229), 33 states have call successors, (33), 7 states have call predecessors, (33), 7 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-28 20:38:47,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 295 transitions. [2023-11-28 20:38:47,895 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 295 transitions. Word has length 22 [2023-11-28 20:38:47,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:38:47,895 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 295 transitions. [2023-11-28 20:38:47,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-28 20:38:47,895 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 295 transitions. [2023-11-28 20:38:47,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-28 20:38:47,897 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:38:47,897 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:38:47,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-28 20:38:47,898 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:38:47,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:47,898 INFO L85 PathProgramCache]: Analyzing trace with hash -73006397, now seen corresponding path program 1 times [2023-11-28 20:38:47,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:47,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727963146] [2023-11-28 20:38:47,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:47,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:47,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:47,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:38:47,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:47,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:38:47,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:47,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:38:47,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:47,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727963146] [2023-11-28 20:38:47,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727963146] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:47,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:38:47,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:38:47,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772241375] [2023-11-28 20:38:47,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:47,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:38:47,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:47,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:38:47,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:38:47,995 INFO L87 Difference]: Start difference. First operand 191 states and 295 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-28 20:38:48,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:38:48,047 INFO L93 Difference]: Finished difference Result 429 states and 680 transitions. [2023-11-28 20:38:48,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:38:48,048 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2023-11-28 20:38:48,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:38:48,051 INFO L225 Difference]: With dead ends: 429 [2023-11-28 20:38:48,052 INFO L226 Difference]: Without dead ends: 288 [2023-11-28 20:38:48,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:38:48,054 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 121 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 788 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:38:48,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 788 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:38:48,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2023-11-28 20:38:48,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 191. [2023-11-28 20:38:48,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 150 states have (on average 1.5) internal successors, (225), 153 states have internal predecessors, (225), 33 states have call successors, (33), 7 states have call predecessors, (33), 7 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-28 20:38:48,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 291 transitions. [2023-11-28 20:38:48,073 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 291 transitions. Word has length 30 [2023-11-28 20:38:48,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:38:48,073 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 291 transitions. [2023-11-28 20:38:48,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-28 20:38:48,074 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 291 transitions. [2023-11-28 20:38:48,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-28 20:38:48,075 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:38:48,075 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-28 20:38:48,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-28 20:38:48,076 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:38:48,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:48,076 INFO L85 PathProgramCache]: Analyzing trace with hash -363228684, now seen corresponding path program 1 times [2023-11-28 20:38:48,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:48,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382278018] [2023-11-28 20:38:48,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:48,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:48,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:48,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:38:48,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:48,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:38:48,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:48,175 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:38:48,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:48,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382278018] [2023-11-28 20:38:48,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382278018] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:48,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:38:48,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 20:38:48,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555214609] [2023-11-28 20:38:48,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:48,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:38:48,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:48,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:38:48,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:38:48,178 INFO L87 Difference]: Start difference. First operand 191 states and 291 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-28 20:38:48,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:38:48,216 INFO L93 Difference]: Finished difference Result 373 states and 572 transitions. [2023-11-28 20:38:48,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:38:48,217 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 31 [2023-11-28 20:38:48,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:38:48,219 INFO L225 Difference]: With dead ends: 373 [2023-11-28 20:38:48,219 INFO L226 Difference]: Without dead ends: 193 [2023-11-28 20:38:48,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:38:48,222 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 0 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1048 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:38:48,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1048 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:38:48,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2023-11-28 20:38:48,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 191. [2023-11-28 20:38:48,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 150 states have (on average 1.4933333333333334) internal successors, (224), 153 states have internal predecessors, (224), 33 states have call successors, (33), 7 states have call predecessors, (33), 7 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-28 20:38:48,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 290 transitions. [2023-11-28 20:38:48,237 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 290 transitions. Word has length 31 [2023-11-28 20:38:48,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:38:48,238 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 290 transitions. [2023-11-28 20:38:48,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-28 20:38:48,238 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 290 transitions. [2023-11-28 20:38:48,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-28 20:38:48,240 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:38:48,240 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-28 20:38:48,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-28 20:38:48,240 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:38:48,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:48,241 INFO L85 PathProgramCache]: Analyzing trace with hash 424228152, now seen corresponding path program 1 times [2023-11-28 20:38:48,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:48,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953647917] [2023-11-28 20:38:48,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:48,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:48,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:48,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:38:48,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:48,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:38:48,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:48,325 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:38:48,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:48,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953647917] [2023-11-28 20:38:48,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953647917] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:38:48,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582095443] [2023-11-28 20:38:48,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:48,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:38:48,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:38:48,332 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:38:48,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-28 20:38:48,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:48,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 20:38:48,430 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:38:48,479 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:38:48,479 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:38:48,522 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:38:48,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582095443] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:38:48,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 20:38:48,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-11-28 20:38:48,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982784090] [2023-11-28 20:38:48,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 20:38:48,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:38:48,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:48,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:38:48,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:38:48,525 INFO L87 Difference]: Start difference. First operand 191 states and 290 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-28 20:38:48,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:38:48,584 INFO L93 Difference]: Finished difference Result 431 states and 668 transitions. [2023-11-28 20:38:48,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:38:48,585 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 34 [2023-11-28 20:38:48,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:38:48,588 INFO L225 Difference]: With dead ends: 431 [2023-11-28 20:38:48,588 INFO L226 Difference]: Without dead ends: 250 [2023-11-28 20:38:48,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:38:48,590 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 73 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:38:48,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 780 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:38:48,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2023-11-28 20:38:48,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 244. [2023-11-28 20:38:48,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 193 states have (on average 1.4663212435233162) internal successors, (283), 196 states have internal predecessors, (283), 43 states have call successors, (43), 7 states have call predecessors, (43), 7 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2023-11-28 20:38:48,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 369 transitions. [2023-11-28 20:38:48,610 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 369 transitions. Word has length 34 [2023-11-28 20:38:48,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:38:48,610 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 369 transitions. [2023-11-28 20:38:48,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-28 20:38:48,611 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 369 transitions. [2023-11-28 20:38:48,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-28 20:38:48,613 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:38:48,613 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:38:48,625 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-28 20:38:48,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-28 20:38:48,819 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:38:48,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:48,819 INFO L85 PathProgramCache]: Analyzing trace with hash 895414040, now seen corresponding path program 2 times [2023-11-28 20:38:48,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:48,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338731844] [2023-11-28 20:38:48,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:48,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:48,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:48,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:38:48,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:48,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:38:48,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:48,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:38:48,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:48,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:38:48,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:48,900 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-28 20:38:48,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:48,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338731844] [2023-11-28 20:38:48,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338731844] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:48,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:38:48,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:38:48,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65358555] [2023-11-28 20:38:48,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:48,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:38:48,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:48,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:38:48,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:38:48,902 INFO L87 Difference]: Start difference. First operand 244 states and 369 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-28 20:38:48,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:38:48,960 INFO L93 Difference]: Finished difference Result 499 states and 765 transitions. [2023-11-28 20:38:48,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:38:48,961 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 56 [2023-11-28 20:38:48,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:38:48,964 INFO L225 Difference]: With dead ends: 499 [2023-11-28 20:38:48,965 INFO L226 Difference]: Without dead ends: 283 [2023-11-28 20:38:48,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:38:48,967 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 24 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:38:48,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 784 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:38:48,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2023-11-28 20:38:48,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 280. [2023-11-28 20:38:48,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 225 states have (on average 1.4222222222222223) internal successors, (320), 228 states have internal predecessors, (320), 46 states have call successors, (46), 8 states have call predecessors, (46), 8 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-28 20:38:48,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 412 transitions. [2023-11-28 20:38:48,989 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 412 transitions. Word has length 56 [2023-11-28 20:38:48,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:38:48,989 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 412 transitions. [2023-11-28 20:38:48,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-28 20:38:48,990 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 412 transitions. [2023-11-28 20:38:48,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-28 20:38:48,991 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:38:48,991 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:38:48,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-28 20:38:48,991 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:38:48,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:48,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1856324599, now seen corresponding path program 1 times [2023-11-28 20:38:48,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:48,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026301236] [2023-11-28 20:38:48,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:48,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:49,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:49,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:38:49,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:49,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:38:49,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:49,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:38:49,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:49,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:38:49,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:49,086 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-28 20:38:49,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:49,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026301236] [2023-11-28 20:38:49,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026301236] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:49,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:38:49,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:38:49,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389947078] [2023-11-28 20:38:49,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:49,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:38:49,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:49,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:38:49,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:38:49,088 INFO L87 Difference]: Start difference. First operand 280 states and 412 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-28 20:38:49,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:38:49,152 INFO L93 Difference]: Finished difference Result 536 states and 812 transitions. [2023-11-28 20:38:49,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:38:49,155 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 56 [2023-11-28 20:38:49,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:38:49,158 INFO L225 Difference]: With dead ends: 536 [2023-11-28 20:38:49,158 INFO L226 Difference]: Without dead ends: 289 [2023-11-28 20:38:49,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:38:49,160 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 19 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:38:49,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 771 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:38:49,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-11-28 20:38:49,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 287. [2023-11-28 20:38:49,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 231 states have (on average 1.41991341991342) internal successors, (328), 234 states have internal predecessors, (328), 46 states have call successors, (46), 9 states have call predecessors, (46), 9 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-28 20:38:49,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 420 transitions. [2023-11-28 20:38:49,183 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 420 transitions. Word has length 56 [2023-11-28 20:38:49,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:38:49,183 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 420 transitions. [2023-11-28 20:38:49,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-28 20:38:49,184 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 420 transitions. [2023-11-28 20:38:49,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-28 20:38:49,185 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:38:49,185 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:38:49,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-28 20:38:49,185 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:38:49,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:49,186 INFO L85 PathProgramCache]: Analyzing trace with hash 452708196, now seen corresponding path program 1 times [2023-11-28 20:38:49,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:49,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598168388] [2023-11-28 20:38:49,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:49,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:49,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:49,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:38:49,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:49,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:38:49,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:49,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:38:49,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:49,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:38:49,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:49,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:38:49,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:49,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:38:49,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:49,307 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-28 20:38:49,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:49,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598168388] [2023-11-28 20:38:49,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598168388] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:49,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:38:49,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 20:38:49,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748543668] [2023-11-28 20:38:49,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:49,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:38:49,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:49,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:38:49,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:38:49,309 INFO L87 Difference]: Start difference. First operand 287 states and 420 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-28 20:38:49,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:38:49,350 INFO L93 Difference]: Finished difference Result 524 states and 780 transitions. [2023-11-28 20:38:49,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:38:49,351 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 74 [2023-11-28 20:38:49,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:38:49,354 INFO L225 Difference]: With dead ends: 524 [2023-11-28 20:38:49,354 INFO L226 Difference]: Without dead ends: 289 [2023-11-28 20:38:49,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:38:49,356 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 0 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:38:49,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1047 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:38:49,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-11-28 20:38:49,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 287. [2023-11-28 20:38:49,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 231 states have (on average 1.406926406926407) internal successors, (325), 234 states have internal predecessors, (325), 46 states have call successors, (46), 9 states have call predecessors, (46), 9 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-28 20:38:49,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 417 transitions. [2023-11-28 20:38:49,377 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 417 transitions. Word has length 74 [2023-11-28 20:38:49,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:38:49,378 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 417 transitions. [2023-11-28 20:38:49,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-28 20:38:49,378 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 417 transitions. [2023-11-28 20:38:49,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-28 20:38:49,380 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:38:49,380 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:38:49,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-28 20:38:49,380 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:38:49,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:49,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1073627768, now seen corresponding path program 1 times [2023-11-28 20:38:49,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:49,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072407150] [2023-11-28 20:38:49,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:49,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:49,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:49,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:38:49,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:49,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:38:49,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:49,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:38:49,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:49,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:38:49,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:49,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:38:49,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:49,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:38:49,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:49,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:38:49,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:49,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:38:49,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:49,500 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-11-28 20:38:49,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:49,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072407150] [2023-11-28 20:38:49,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072407150] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:49,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:38:49,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:38:49,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001825077] [2023-11-28 20:38:49,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:49,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:38:49,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:49,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:38:49,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:38:49,502 INFO L87 Difference]: Start difference. First operand 287 states and 417 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-28 20:38:49,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:38:49,562 INFO L93 Difference]: Finished difference Result 561 states and 836 transitions. [2023-11-28 20:38:49,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:38:49,562 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 103 [2023-11-28 20:38:49,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:38:49,566 INFO L225 Difference]: With dead ends: 561 [2023-11-28 20:38:49,566 INFO L226 Difference]: Without dead ends: 331 [2023-11-28 20:38:49,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:38:49,568 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 25 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:38:49,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 784 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:38:49,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2023-11-28 20:38:49,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 328. [2023-11-28 20:38:49,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 268 states have (on average 1.3694029850746268) internal successors, (367), 271 states have internal predecessors, (367), 49 states have call successors, (49), 10 states have call predecessors, (49), 10 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2023-11-28 20:38:49,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 465 transitions. [2023-11-28 20:38:49,588 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 465 transitions. Word has length 103 [2023-11-28 20:38:49,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:38:49,588 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 465 transitions. [2023-11-28 20:38:49,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-28 20:38:49,589 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 465 transitions. [2023-11-28 20:38:49,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-28 20:38:49,590 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:38:49,590 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:38:49,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-28 20:38:49,590 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:38:49,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:49,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1618665253, now seen corresponding path program 1 times [2023-11-28 20:38:49,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:49,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923567673] [2023-11-28 20:38:49,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:49,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:49,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:49,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:38:49,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:49,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:38:49,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:49,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:38:49,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:49,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:38:49,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:49,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:38:49,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:49,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:38:49,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:49,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:38:49,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:49,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:38:49,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:49,717 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2023-11-28 20:38:49,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:49,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923567673] [2023-11-28 20:38:49,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923567673] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:49,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:38:49,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:38:49,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320986469] [2023-11-28 20:38:49,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:49,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:38:49,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:49,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:38:49,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:38:49,719 INFO L87 Difference]: Start difference. First operand 328 states and 465 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-28 20:38:49,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:38:49,775 INFO L93 Difference]: Finished difference Result 587 states and 856 transitions. [2023-11-28 20:38:49,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:38:49,776 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 104 [2023-11-28 20:38:49,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:38:49,779 INFO L225 Difference]: With dead ends: 587 [2023-11-28 20:38:49,779 INFO L226 Difference]: Without dead ends: 322 [2023-11-28 20:38:49,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:38:49,781 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 15 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:38:49,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 744 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:38:49,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2023-11-28 20:38:49,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2023-11-28 20:38:49,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 263 states have (on average 1.349809885931559) internal successors, (355), 266 states have internal predecessors, (355), 48 states have call successors, (48), 10 states have call predecessors, (48), 10 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-28 20:38:49,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 451 transitions. [2023-11-28 20:38:49,802 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 451 transitions. Word has length 104 [2023-11-28 20:38:49,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:38:49,802 INFO L495 AbstractCegarLoop]: Abstraction has 322 states and 451 transitions. [2023-11-28 20:38:49,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-28 20:38:49,803 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 451 transitions. [2023-11-28 20:38:49,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-28 20:38:49,804 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:38:49,804 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:38:49,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-28 20:38:49,805 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:38:49,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:49,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1079619414, now seen corresponding path program 1 times [2023-11-28 20:38:49,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:49,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080032605] [2023-11-28 20:38:49,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:49,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:49,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:49,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:38:49,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:49,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:38:49,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:49,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:38:49,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:49,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:38:49,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:49,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:38:49,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:49,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:38:49,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:49,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:38:49,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:49,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:38:49,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:49,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:38:49,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:49,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:38:49,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:49,944 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2023-11-28 20:38:49,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:49,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080032605] [2023-11-28 20:38:49,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080032605] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:49,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:38:49,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 20:38:49,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786958888] [2023-11-28 20:38:49,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:49,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:38:49,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:49,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:38:49,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:38:49,947 INFO L87 Difference]: Start difference. First operand 322 states and 451 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-28 20:38:49,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:38:49,983 INFO L93 Difference]: Finished difference Result 562 states and 805 transitions. [2023-11-28 20:38:49,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:38:49,984 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 123 [2023-11-28 20:38:49,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:38:49,987 INFO L225 Difference]: With dead ends: 562 [2023-11-28 20:38:49,987 INFO L226 Difference]: Without dead ends: 324 [2023-11-28 20:38:49,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:38:49,989 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 0 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1031 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:38:49,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1031 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:38:49,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2023-11-28 20:38:50,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 322. [2023-11-28 20:38:50,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 263 states have (on average 1.338403041825095) internal successors, (352), 266 states have internal predecessors, (352), 48 states have call successors, (48), 10 states have call predecessors, (48), 10 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-28 20:38:50,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 448 transitions. [2023-11-28 20:38:50,008 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 448 transitions. Word has length 123 [2023-11-28 20:38:50,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:38:50,009 INFO L495 AbstractCegarLoop]: Abstraction has 322 states and 448 transitions. [2023-11-28 20:38:50,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-28 20:38:50,009 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 448 transitions. [2023-11-28 20:38:50,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-11-28 20:38:50,011 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:38:50,011 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 7, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:38:50,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-28 20:38:50,012 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:38:50,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:50,012 INFO L85 PathProgramCache]: Analyzing trace with hash -955046142, now seen corresponding path program 1 times [2023-11-28 20:38:50,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:50,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869378885] [2023-11-28 20:38:50,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:50,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:50,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:50,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:38:50,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:50,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:38:50,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:50,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:38:50,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:50,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:38:50,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:50,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:38:50,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:50,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:38:50,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:50,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:38:50,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:50,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:38:50,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:50,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:38:50,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:50,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:38:50,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:50,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:38:50,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:50,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:38:50,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:50,149 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2023-11-28 20:38:50,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:50,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869378885] [2023-11-28 20:38:50,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869378885] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:50,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:38:50,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:38:50,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25058277] [2023-11-28 20:38:50,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:50,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:38:50,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:50,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:38:50,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:38:50,151 INFO L87 Difference]: Start difference. First operand 322 states and 448 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-28 20:38:50,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:38:50,215 INFO L93 Difference]: Finished difference Result 525 states and 765 transitions. [2023-11-28 20:38:50,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:38:50,216 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 156 [2023-11-28 20:38:50,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:38:50,218 INFO L225 Difference]: With dead ends: 525 [2023-11-28 20:38:50,219 INFO L226 Difference]: Without dead ends: 320 [2023-11-28 20:38:50,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:38:50,220 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 13 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:38:50,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 712 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:38:50,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2023-11-28 20:38:50,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2023-11-28 20:38:50,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 262 states have (on average 1.3358778625954197) internal successors, (350), 265 states have internal predecessors, (350), 47 states have call successors, (47), 10 states have call predecessors, (47), 10 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2023-11-28 20:38:50,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 444 transitions. [2023-11-28 20:38:50,239 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 444 transitions. Word has length 156 [2023-11-28 20:38:50,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:38:50,240 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 444 transitions. [2023-11-28 20:38:50,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-28 20:38:50,240 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 444 transitions. [2023-11-28 20:38:50,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-11-28 20:38:50,243 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:38:50,243 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:38:50,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-28 20:38:50,243 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:38:50,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:50,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1482802370, now seen corresponding path program 1 times [2023-11-28 20:38:50,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:50,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125403383] [2023-11-28 20:38:50,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:50,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:50,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:50,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:38:50,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:50,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:38:50,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:50,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:38:50,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:50,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:38:50,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:50,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:38:50,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:50,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:38:50,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:50,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:38:50,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:50,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:38:50,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:50,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:38:50,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:50,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:38:50,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:50,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:38:50,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:50,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:38:50,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:50,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 20:38:50,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:50,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:38:50,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:50,448 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2023-11-28 20:38:50,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:50,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125403383] [2023-11-28 20:38:50,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125403383] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:50,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:38:50,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:38:50,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133011190] [2023-11-28 20:38:50,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:50,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:38:50,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:50,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:38:50,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:38:50,451 INFO L87 Difference]: Start difference. First operand 320 states and 444 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-28 20:38:50,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:38:50,525 INFO L93 Difference]: Finished difference Result 465 states and 661 transitions. [2023-11-28 20:38:50,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:38:50,526 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 171 [2023-11-28 20:38:50,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:38:50,528 INFO L225 Difference]: With dead ends: 465 [2023-11-28 20:38:50,529 INFO L226 Difference]: Without dead ends: 303 [2023-11-28 20:38:50,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:38:50,530 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 35 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:38:50,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 693 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:38:50,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2023-11-28 20:38:50,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2023-11-28 20:38:50,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 248 states have (on average 1.3266129032258065) internal successors, (329), 251 states have internal predecessors, (329), 44 states have call successors, (44), 10 states have call predecessors, (44), 10 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-11-28 20:38:50,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 417 transitions. [2023-11-28 20:38:50,551 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 417 transitions. Word has length 171 [2023-11-28 20:38:50,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:38:50,551 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 417 transitions. [2023-11-28 20:38:50,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-28 20:38:50,552 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 417 transitions. [2023-11-28 20:38:50,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-11-28 20:38:50,554 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:38:50,554 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:38:50,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-28 20:38:50,555 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:38:50,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:50,555 INFO L85 PathProgramCache]: Analyzing trace with hash 520522913, now seen corresponding path program 1 times [2023-11-28 20:38:50,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:50,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223396583] [2023-11-28 20:38:50,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:50,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:50,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:50,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:38:50,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:50,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:38:50,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:50,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:38:50,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:50,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:38:50,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:50,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:38:50,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:50,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:38:50,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:50,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:38:50,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:50,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:38:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:50,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:38:50,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:50,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:38:50,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:50,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:38:50,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:50,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:38:50,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:50,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 20:38:50,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:50,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:38:50,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:50,682 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2023-11-28 20:38:50,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:50,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223396583] [2023-11-28 20:38:50,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223396583] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:50,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:38:50,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:38:50,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930143063] [2023-11-28 20:38:50,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:50,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:38:50,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:50,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:38:50,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:38:50,684 INFO L87 Difference]: Start difference. First operand 303 states and 417 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-28 20:38:50,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:38:50,751 INFO L93 Difference]: Finished difference Result 448 states and 634 transitions. [2023-11-28 20:38:50,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:38:50,752 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 173 [2023-11-28 20:38:50,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:38:50,755 INFO L225 Difference]: With dead ends: 448 [2023-11-28 20:38:50,755 INFO L226 Difference]: Without dead ends: 284 [2023-11-28 20:38:50,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:38:50,756 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 30 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:38:50,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 697 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:38:50,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2023-11-28 20:38:50,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2023-11-28 20:38:50,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 232 states have (on average 1.3189655172413792) internal successors, (306), 235 states have internal predecessors, (306), 41 states have call successors, (41), 10 states have call predecessors, (41), 10 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-28 20:38:50,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 388 transitions. [2023-11-28 20:38:50,769 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 388 transitions. Word has length 173 [2023-11-28 20:38:50,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:38:50,770 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 388 transitions. [2023-11-28 20:38:50,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-28 20:38:50,770 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 388 transitions. [2023-11-28 20:38:50,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-11-28 20:38:50,772 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:38:50,772 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 7, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:38:50,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-28 20:38:50,773 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:38:50,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:50,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1655232664, now seen corresponding path program 1 times [2023-11-28 20:38:50,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:50,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957257314] [2023-11-28 20:38:50,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:50,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:50,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:50,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:38:50,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:50,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:38:50,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:50,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:38:50,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:50,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:38:50,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:50,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:38:50,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:50,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:38:50,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:50,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:38:50,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:50,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:38:50,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:50,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:38:50,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:50,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:38:50,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:50,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:38:50,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:50,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:38:50,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:50,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 20:38:50,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:50,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:38:50,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:50,930 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2023-11-28 20:38:50,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:50,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957257314] [2023-11-28 20:38:50,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957257314] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:50,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:38:50,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 20:38:50,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719781182] [2023-11-28 20:38:50,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:50,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:38:50,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:50,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:38:50,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:38:50,932 INFO L87 Difference]: Start difference. First operand 284 states and 388 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-28 20:38:50,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:38:50,961 INFO L93 Difference]: Finished difference Result 428 states and 604 transitions. [2023-11-28 20:38:50,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:38:50,962 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 174 [2023-11-28 20:38:50,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:38:50,964 INFO L225 Difference]: With dead ends: 428 [2023-11-28 20:38:50,964 INFO L226 Difference]: Without dead ends: 284 [2023-11-28 20:38:50,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:38:50,965 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 0 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:38:50,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1009 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:38:50,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2023-11-28 20:38:50,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2023-11-28 20:38:50,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 232 states have (on average 1.293103448275862) internal successors, (300), 235 states have internal predecessors, (300), 41 states have call successors, (41), 10 states have call predecessors, (41), 10 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-28 20:38:50,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 382 transitions. [2023-11-28 20:38:50,979 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 382 transitions. Word has length 174 [2023-11-28 20:38:50,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:38:50,980 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 382 transitions. [2023-11-28 20:38:50,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-28 20:38:50,980 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 382 transitions. [2023-11-28 20:38:50,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-11-28 20:38:50,982 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:38:50,982 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:38:50,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-28 20:38:50,982 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:38:50,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:50,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1746472809, now seen corresponding path program 1 times [2023-11-28 20:38:50,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:50,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284630072] [2023-11-28 20:38:50,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:50,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:51,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:51,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:38:51,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:51,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:38:51,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:51,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:38:51,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:51,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:38:51,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:51,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:38:51,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:51,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:38:51,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:51,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:38:51,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:51,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:38:51,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:51,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:38:51,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:51,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:38:51,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:51,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:38:51,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:51,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:38:51,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:51,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 20:38:51,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:51,101 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 138 proven. 11 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2023-11-28 20:38:51,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:51,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284630072] [2023-11-28 20:38:51,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284630072] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:38:51,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713680050] [2023-11-28 20:38:51,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:51,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:38:51,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:38:51,103 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:38:51,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-28 20:38:51,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:51,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 20:38:51,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:38:51,316 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 138 proven. 11 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2023-11-28 20:38:51,316 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:38:51,437 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2023-11-28 20:38:51,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713680050] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-28 20:38:51,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-28 20:38:51,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 5 [2023-11-28 20:38:51,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269539119] [2023-11-28 20:38:51,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:51,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:38:51,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:51,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:38:51,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:38:51,439 INFO L87 Difference]: Start difference. First operand 284 states and 382 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-28 20:38:51,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:38:51,498 INFO L93 Difference]: Finished difference Result 449 states and 626 transitions. [2023-11-28 20:38:51,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:38:51,499 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 181 [2023-11-28 20:38:51,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:38:51,502 INFO L225 Difference]: With dead ends: 449 [2023-11-28 20:38:51,502 INFO L226 Difference]: Without dead ends: 263 [2023-11-28 20:38:51,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:38:51,503 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 30 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:38:51,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 477 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:38:51,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2023-11-28 20:38:51,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2023-11-28 20:38:51,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 214 states have (on average 1.2850467289719627) internal successors, (275), 217 states have internal predecessors, (275), 38 states have call successors, (38), 10 states have call predecessors, (38), 10 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-28 20:38:51,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 351 transitions. [2023-11-28 20:38:51,522 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 351 transitions. Word has length 181 [2023-11-28 20:38:51,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:38:51,522 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 351 transitions. [2023-11-28 20:38:51,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-28 20:38:51,523 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 351 transitions. [2023-11-28 20:38:51,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-11-28 20:38:51,525 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:38:51,526 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:38:51,532 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-28 20:38:51,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-28 20:38:51,726 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:38:51,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:51,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1271681116, now seen corresponding path program 1 times [2023-11-28 20:38:51,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:51,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259773389] [2023-11-28 20:38:51,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:51,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:51,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:51,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:38:51,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:51,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:38:51,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:51,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:38:51,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:51,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:38:51,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:51,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:38:51,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:51,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:38:51,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:51,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:38:51,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:51,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:38:51,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:51,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:38:51,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:51,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:38:51,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:51,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:38:51,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:51,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:38:51,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:51,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 20:38:51,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:51,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:38:51,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:51,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:38:51,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:51,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-28 20:38:51,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:51,898 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2023-11-28 20:38:51,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:51,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259773389] [2023-11-28 20:38:51,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259773389] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:51,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:38:51,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:38:51,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748814165] [2023-11-28 20:38:51,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:51,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:38:51,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:51,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:38:51,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:38:51,900 INFO L87 Difference]: Start difference. First operand 263 states and 351 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-28 20:38:51,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:38:51,940 INFO L93 Difference]: Finished difference Result 406 states and 568 transitions. [2023-11-28 20:38:51,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:38:51,941 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 205 [2023-11-28 20:38:51,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:38:51,943 INFO L225 Difference]: With dead ends: 406 [2023-11-28 20:38:51,944 INFO L226 Difference]: Without dead ends: 269 [2023-11-28 20:38:51,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:38:51,945 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 6 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:38:51,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 737 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:38:51,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2023-11-28 20:38:51,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 267. [2023-11-28 20:38:51,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 217 states have (on average 1.2811059907834101) internal successors, (278), 220 states have internal predecessors, (278), 38 states have call successors, (38), 11 states have call predecessors, (38), 11 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-28 20:38:51,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 354 transitions. [2023-11-28 20:38:51,962 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 354 transitions. Word has length 205 [2023-11-28 20:38:51,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:38:51,962 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 354 transitions. [2023-11-28 20:38:51,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-28 20:38:51,962 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 354 transitions. [2023-11-28 20:38:51,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2023-11-28 20:38:51,965 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:38:51,965 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:38:51,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-28 20:38:51,966 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:38:51,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:51,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1233341410, now seen corresponding path program 1 times [2023-11-28 20:38:51,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:51,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215962738] [2023-11-28 20:38:51,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:51,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:51,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:52,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:38:52,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:52,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:38:52,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:52,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:38:52,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:52,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:38:52,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:52,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:38:52,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:52,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:38:52,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:52,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:38:52,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:52,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:38:52,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:52,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:38:52,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:52,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:38:52,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:52,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:38:52,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:52,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:38:52,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:52,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 20:38:52,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:52,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:38:52,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:52,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:38:52,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:52,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-28 20:38:52,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:52,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-11-28 20:38:52,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:52,157 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2023-11-28 20:38:52,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:52,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215962738] [2023-11-28 20:38:52,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215962738] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:38:52,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393653161] [2023-11-28 20:38:52,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:52,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:38:52,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:38:52,159 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:38:52,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-28 20:38:52,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:52,325 INFO L262 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 20:38:52,335 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:38:52,354 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2023-11-28 20:38:52,354 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:38:52,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393653161] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:52,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:38:52,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-11-28 20:38:52,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041315986] [2023-11-28 20:38:52,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:52,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:38:52,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:52,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:38:52,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:38:52,356 INFO L87 Difference]: Start difference. First operand 267 states and 354 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-28 20:38:52,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:38:52,399 INFO L93 Difference]: Finished difference Result 415 states and 575 transitions. [2023-11-28 20:38:52,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:38:52,400 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 212 [2023-11-28 20:38:52,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:38:52,402 INFO L225 Difference]: With dead ends: 415 [2023-11-28 20:38:52,402 INFO L226 Difference]: Without dead ends: 274 [2023-11-28 20:38:52,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-28 20:38:52,404 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 7 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:38:52,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 742 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:38:52,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2023-11-28 20:38:52,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 272. [2023-11-28 20:38:52,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 221 states have (on average 1.2760180995475112) internal successors, (282), 224 states have internal predecessors, (282), 38 states have call successors, (38), 12 states have call predecessors, (38), 12 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-28 20:38:52,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 358 transitions. [2023-11-28 20:38:52,420 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 358 transitions. Word has length 212 [2023-11-28 20:38:52,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:38:52,421 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 358 transitions. [2023-11-28 20:38:52,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-28 20:38:52,421 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 358 transitions. [2023-11-28 20:38:52,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2023-11-28 20:38:52,424 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:38:52,424 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:38:52,431 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-28 20:38:52,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:38:52,625 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:38:52,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:52,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1184005805, now seen corresponding path program 1 times [2023-11-28 20:38:52,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:52,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591385705] [2023-11-28 20:38:52,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:52,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:52,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:52,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:38:52,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:52,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:38:52,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:52,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:38:52,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:52,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:38:52,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:52,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:38:52,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:52,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:38:52,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:52,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:38:52,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:52,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:38:52,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:52,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:38:52,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:52,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:38:52,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:52,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:38:52,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:52,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:38:52,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:52,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 20:38:52,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:52,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:38:52,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:52,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:38:52,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:52,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-28 20:38:52,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:52,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-11-28 20:38:52,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:52,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-11-28 20:38:52,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:52,848 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2023-11-28 20:38:52,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:52,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591385705] [2023-11-28 20:38:52,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591385705] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:38:52,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640080486] [2023-11-28 20:38:52,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:52,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:38:52,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:38:52,850 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:38:52,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-28 20:38:53,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:53,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 711 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 20:38:53,035 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:38:53,056 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2023-11-28 20:38:53,056 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:38:53,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640080486] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:53,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:38:53,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-11-28 20:38:53,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185608652] [2023-11-28 20:38:53,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:53,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:38:53,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:53,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:38:53,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:38:53,059 INFO L87 Difference]: Start difference. First operand 272 states and 358 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-28 20:38:53,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:38:53,101 INFO L93 Difference]: Finished difference Result 417 states and 573 transitions. [2023-11-28 20:38:53,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:38:53,101 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 220 [2023-11-28 20:38:53,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:38:53,104 INFO L225 Difference]: With dead ends: 417 [2023-11-28 20:38:53,104 INFO L226 Difference]: Without dead ends: 271 [2023-11-28 20:38:53,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-28 20:38:53,105 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 7 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:38:53,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 728 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:38:53,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2023-11-28 20:38:53,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2023-11-28 20:38:53,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 221 states have (on average 1.262443438914027) internal successors, (279), 223 states have internal predecessors, (279), 37 states have call successors, (37), 12 states have call predecessors, (37), 12 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-28 20:38:53,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 353 transitions. [2023-11-28 20:38:53,120 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 353 transitions. Word has length 220 [2023-11-28 20:38:53,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:38:53,121 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 353 transitions. [2023-11-28 20:38:53,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-28 20:38:53,121 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 353 transitions. [2023-11-28 20:38:53,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2023-11-28 20:38:53,124 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:38:53,125 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:38:53,131 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-28 20:38:53,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:38:53,325 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:38:53,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:53,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1274064016, now seen corresponding path program 1 times [2023-11-28 20:38:53,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:53,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608626836] [2023-11-28 20:38:53,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:53,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:53,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:53,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:38:53,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:53,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:38:53,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:53,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:38:53,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:53,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:38:53,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:53,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:38:53,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:53,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:38:53,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:53,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:38:53,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:53,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:38:53,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:53,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:38:53,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:53,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:38:53,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:53,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:38:53,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:53,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:38:53,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:53,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 20:38:53,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:53,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:38:53,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:53,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:38:53,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:53,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-28 20:38:53,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:53,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-11-28 20:38:53,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:53,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-11-28 20:38:53,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:53,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-11-28 20:38:53,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:53,532 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2023-11-28 20:38:53,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:53,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608626836] [2023-11-28 20:38:53,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608626836] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:53,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:38:53,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:38:53,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547612551] [2023-11-28 20:38:53,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:53,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:38:53,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:53,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:38:53,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:38:53,535 INFO L87 Difference]: Start difference. First operand 271 states and 353 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-28 20:38:53,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:38:53,835 INFO L93 Difference]: Finished difference Result 415 states and 562 transitions. [2023-11-28 20:38:53,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:38:53,836 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 228 [2023-11-28 20:38:53,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:38:53,839 INFO L225 Difference]: With dead ends: 415 [2023-11-28 20:38:53,840 INFO L226 Difference]: Without dead ends: 270 [2023-11-28 20:38:53,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:38:53,841 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 60 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-28 20:38:53,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 473 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-28 20:38:53,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2023-11-28 20:38:53,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2023-11-28 20:38:53,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 221 states have (on average 1.257918552036199) internal successors, (278), 222 states have internal predecessors, (278), 36 states have call successors, (36), 12 states have call predecessors, (36), 12 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-28 20:38:53,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 350 transitions. [2023-11-28 20:38:53,876 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 350 transitions. Word has length 228 [2023-11-28 20:38:53,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:38:53,877 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 350 transitions. [2023-11-28 20:38:53,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-28 20:38:53,878 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 350 transitions. [2023-11-28 20:38:53,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2023-11-28 20:38:53,881 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:38:53,882 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:38:53,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-28 20:38:53,882 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:38:53,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:53,883 INFO L85 PathProgramCache]: Analyzing trace with hash -665571617, now seen corresponding path program 1 times [2023-11-28 20:38:53,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:53,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822841755] [2023-11-28 20:38:53,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:53,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:53,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:54,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:38:54,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:54,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:38:54,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:54,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:38:54,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:54,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:38:54,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:54,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:38:54,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:54,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:38:54,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:54,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:38:54,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:54,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:38:54,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:54,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:38:54,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:54,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:38:54,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:54,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:38:54,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:54,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:38:54,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:54,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 20:38:54,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:54,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:38:54,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:54,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:38:54,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:54,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-28 20:38:54,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:54,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-11-28 20:38:54,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:54,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-11-28 20:38:54,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:54,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-11-28 20:38:54,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:54,172 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2023-11-28 20:38:54,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:54,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822841755] [2023-11-28 20:38:54,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822841755] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:54,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:38:54,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 20:38:54,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009619156] [2023-11-28 20:38:54,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:54,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:38:54,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:54,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:38:54,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:38:54,174 INFO L87 Difference]: Start difference. First operand 270 states and 350 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-28 20:38:54,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:38:54,686 INFO L93 Difference]: Finished difference Result 619 states and 830 transitions. [2023-11-28 20:38:54,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-28 20:38:54,687 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 230 [2023-11-28 20:38:54,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:38:54,691 INFO L225 Difference]: With dead ends: 619 [2023-11-28 20:38:54,691 INFO L226 Difference]: Without dead ends: 475 [2023-11-28 20:38:54,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-28 20:38:54,692 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 407 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-28 20:38:54,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 617 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-28 20:38:54,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2023-11-28 20:38:54,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 421. [2023-11-28 20:38:54,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 342 states have (on average 1.304093567251462) internal successors, (446), 344 states have internal predecessors, (446), 54 states have call successors, (54), 24 states have call predecessors, (54), 24 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-28 20:38:54,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 554 transitions. [2023-11-28 20:38:54,729 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 554 transitions. Word has length 230 [2023-11-28 20:38:54,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:38:54,729 INFO L495 AbstractCegarLoop]: Abstraction has 421 states and 554 transitions. [2023-11-28 20:38:54,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-28 20:38:54,730 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 554 transitions. [2023-11-28 20:38:54,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2023-11-28 20:38:54,734 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:38:54,734 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:38:54,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-28 20:38:54,734 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:38:54,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:54,735 INFO L85 PathProgramCache]: Analyzing trace with hash 2013258127, now seen corresponding path program 1 times [2023-11-28 20:38:54,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:54,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169828822] [2023-11-28 20:38:54,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:54,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:54,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:54,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:38:54,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:54,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:38:54,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:54,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:38:54,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:54,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:38:54,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:54,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:38:54,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:54,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:38:54,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:54,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:38:54,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:54,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:38:54,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:54,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:38:54,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:54,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:38:54,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:54,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:38:54,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:54,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:38:54,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:54,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 20:38:54,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:54,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:38:54,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:54,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:38:54,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:54,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-28 20:38:54,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:54,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-11-28 20:38:54,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:54,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-11-28 20:38:54,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:54,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-11-28 20:38:54,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:54,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2023-11-28 20:38:54,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:54,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2023-11-28 20:38:54,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:54,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2023-11-28 20:38:54,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:54,932 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2023-11-28 20:38:54,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:54,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169828822] [2023-11-28 20:38:54,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169828822] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:54,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:38:54,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:38:54,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076218385] [2023-11-28 20:38:54,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:54,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:38:54,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:54,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:38:54,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:38:54,935 INFO L87 Difference]: Start difference. First operand 421 states and 554 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-28 20:38:55,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:38:55,385 INFO L93 Difference]: Finished difference Result 889 states and 1224 transitions. [2023-11-28 20:38:55,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:38:55,386 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 257 [2023-11-28 20:38:55,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:38:55,391 INFO L225 Difference]: With dead ends: 889 [2023-11-28 20:38:55,391 INFO L226 Difference]: Without dead ends: 662 [2023-11-28 20:38:55,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:38:55,393 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 220 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-28 20:38:55,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 470 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-28 20:38:55,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2023-11-28 20:38:55,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 500. [2023-11-28 20:38:55,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 411 states have (on average 1.316301703163017) internal successors, (541), 414 states have internal predecessors, (541), 59 states have call successors, (59), 29 states have call predecessors, (59), 29 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2023-11-28 20:38:55,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 659 transitions. [2023-11-28 20:38:55,443 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 659 transitions. Word has length 257 [2023-11-28 20:38:55,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:38:55,443 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 659 transitions. [2023-11-28 20:38:55,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-28 20:38:55,444 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 659 transitions. [2023-11-28 20:38:55,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2023-11-28 20:38:55,446 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:38:55,446 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:38:55,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-28 20:38:55,446 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:38:55,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:55,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1455159987, now seen corresponding path program 1 times [2023-11-28 20:38:55,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:55,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978983596] [2023-11-28 20:38:55,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:55,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:55,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:55,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:38:55,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:55,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:38:55,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:55,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:38:55,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:55,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:38:55,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:55,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:38:55,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:55,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:38:55,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:55,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:38:55,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:55,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:38:55,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:55,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:38:55,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:55,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:38:55,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:55,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:38:55,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:55,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:38:55,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:55,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 20:38:55,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:55,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:38:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:55,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:38:55,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:55,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-28 20:38:55,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:55,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-11-28 20:38:55,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:55,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-11-28 20:38:55,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:55,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-11-28 20:38:55,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:55,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2023-11-28 20:38:55,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:55,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-11-28 20:38:55,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:55,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2023-11-28 20:38:55,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:55,629 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2023-11-28 20:38:55,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:55,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978983596] [2023-11-28 20:38:55,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978983596] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:55,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:38:55,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:38:55,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457272214] [2023-11-28 20:38:55,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:55,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:38:55,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:55,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:38:55,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:38:55,632 INFO L87 Difference]: Start difference. First operand 500 states and 659 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-28 20:38:56,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:38:56,091 INFO L93 Difference]: Finished difference Result 1060 states and 1455 transitions. [2023-11-28 20:38:56,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:38:56,092 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 258 [2023-11-28 20:38:56,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:38:56,097 INFO L225 Difference]: With dead ends: 1060 [2023-11-28 20:38:56,097 INFO L226 Difference]: Without dead ends: 783 [2023-11-28 20:38:56,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:38:56,098 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 221 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-28 20:38:56,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 498 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-28 20:38:56,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2023-11-28 20:38:56,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 608. [2023-11-28 20:38:56,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 507 states have (on average 1.331360946745562) internal successors, (675), 512 states have internal predecessors, (675), 65 states have call successors, (65), 35 states have call predecessors, (65), 35 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2023-11-28 20:38:56,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 805 transitions. [2023-11-28 20:38:56,138 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 805 transitions. Word has length 258 [2023-11-28 20:38:56,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:38:56,138 INFO L495 AbstractCegarLoop]: Abstraction has 608 states and 805 transitions. [2023-11-28 20:38:56,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-28 20:38:56,138 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 805 transitions. [2023-11-28 20:38:56,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2023-11-28 20:38:56,140 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:38:56,140 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:38:56,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-28 20:38:56,141 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:38:56,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:56,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1232443562, now seen corresponding path program 1 times [2023-11-28 20:38:56,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:56,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709583706] [2023-11-28 20:38:56,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:56,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:56,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:56,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:38:56,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:56,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:38:56,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:56,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:38:56,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:56,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:38:56,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:56,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:38:56,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:56,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:38:56,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:56,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:38:56,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:56,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:38:56,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:56,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:38:56,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:56,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:38:56,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:56,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:38:56,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:56,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:38:56,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:56,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 20:38:56,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:56,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:38:56,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:56,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:38:56,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:56,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-28 20:38:56,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:56,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-11-28 20:38:56,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:56,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-11-28 20:38:56,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:56,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-11-28 20:38:56,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:56,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-11-28 20:38:56,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:56,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2023-11-28 20:38:56,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:56,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2023-11-28 20:38:56,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:56,274 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2023-11-28 20:38:56,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:56,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709583706] [2023-11-28 20:38:56,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709583706] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:56,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:38:56,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:38:56,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981159562] [2023-11-28 20:38:56,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:56,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:38:56,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:56,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:38:56,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:38:56,276 INFO L87 Difference]: Start difference. First operand 608 states and 805 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-28 20:38:56,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:38:56,740 INFO L93 Difference]: Finished difference Result 1270 states and 1749 transitions. [2023-11-28 20:38:56,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:38:56,740 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 259 [2023-11-28 20:38:56,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:38:56,747 INFO L225 Difference]: With dead ends: 1270 [2023-11-28 20:38:56,747 INFO L226 Difference]: Without dead ends: 917 [2023-11-28 20:38:56,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:38:56,749 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 221 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-28 20:38:56,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 525 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-28 20:38:56,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2023-11-28 20:38:56,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 714. [2023-11-28 20:38:56,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 605 states have (on average 1.3537190082644628) internal successors, (819), 614 states have internal predecessors, (819), 69 states have call successors, (69), 39 states have call predecessors, (69), 39 states have return successors, (69), 68 states have call predecessors, (69), 69 states have call successors, (69) [2023-11-28 20:38:56,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 957 transitions. [2023-11-28 20:38:56,817 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 957 transitions. Word has length 259 [2023-11-28 20:38:56,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:38:56,818 INFO L495 AbstractCegarLoop]: Abstraction has 714 states and 957 transitions. [2023-11-28 20:38:56,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-28 20:38:56,819 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 957 transitions. [2023-11-28 20:38:56,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2023-11-28 20:38:56,821 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:38:56,821 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:38:56,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-28 20:38:56,822 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:38:56,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:56,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1507203176, now seen corresponding path program 1 times [2023-11-28 20:38:56,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:56,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770639088] [2023-11-28 20:38:56,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:56,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:56,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:56,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:38:56,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:56,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:38:56,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:56,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:38:57,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:57,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:38:57,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:57,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:38:57,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:57,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:38:57,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:57,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:38:57,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:57,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:38:57,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:57,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:38:57,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:57,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:38:57,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:57,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:38:57,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:57,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:38:57,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:57,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 20:38:57,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:57,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:38:57,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:57,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:38:57,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:57,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-28 20:38:57,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:57,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-11-28 20:38:57,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:57,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-11-28 20:38:57,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:57,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-11-28 20:38:57,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:57,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-11-28 20:38:57,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:57,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2023-11-28 20:38:57,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:57,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2023-11-28 20:38:57,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:57,103 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 30 proven. 6 refuted. 0 times theorem prover too weak. 603 trivial. 0 not checked. [2023-11-28 20:38:57,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:57,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770639088] [2023-11-28 20:38:57,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770639088] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:38:57,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454298895] [2023-11-28 20:38:57,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:57,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:38:57,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:38:57,105 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:38:57,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-28 20:38:57,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:57,310 INFO L262 TraceCheckSpWp]: Trace formula consists of 854 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 20:38:57,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:38:57,353 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2023-11-28 20:38:57,353 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:38:57,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454298895] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:57,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:38:57,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2023-11-28 20:38:57,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407947362] [2023-11-28 20:38:57,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:57,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:38:57,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:57,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:38:57,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-28 20:38:57,356 INFO L87 Difference]: Start difference. First operand 714 states and 957 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-28 20:38:57,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:38:57,516 INFO L93 Difference]: Finished difference Result 1177 states and 1621 transitions. [2023-11-28 20:38:57,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:38:57,517 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 259 [2023-11-28 20:38:57,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:38:57,522 INFO L225 Difference]: With dead ends: 1177 [2023-11-28 20:38:57,522 INFO L226 Difference]: Without dead ends: 714 [2023-11-28 20:38:57,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-28 20:38:57,524 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 51 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 20:38:57,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 645 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 20:38:57,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2023-11-28 20:38:57,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 714. [2023-11-28 20:38:57,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 605 states have (on average 1.343801652892562) internal successors, (813), 614 states have internal predecessors, (813), 69 states have call successors, (69), 39 states have call predecessors, (69), 39 states have return successors, (69), 68 states have call predecessors, (69), 69 states have call successors, (69) [2023-11-28 20:38:57,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 951 transitions. [2023-11-28 20:38:57,589 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 951 transitions. Word has length 259 [2023-11-28 20:38:57,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:38:57,590 INFO L495 AbstractCegarLoop]: Abstraction has 714 states and 951 transitions. [2023-11-28 20:38:57,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-28 20:38:57,590 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 951 transitions. [2023-11-28 20:38:57,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2023-11-28 20:38:57,592 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:38:57,592 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:38:57,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-28 20:38:57,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-28 20:38:57,793 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:38:57,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:57,793 INFO L85 PathProgramCache]: Analyzing trace with hash 632654985, now seen corresponding path program 1 times [2023-11-28 20:38:57,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:57,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866854318] [2023-11-28 20:38:57,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:57,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:57,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:57,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:38:57,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:57,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:38:57,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:57,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:38:57,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:57,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:38:57,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:57,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:38:57,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:57,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:38:57,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:57,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:38:57,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:57,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:38:57,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:57,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:38:57,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:57,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:38:57,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:58,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:38:58,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:58,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:38:58,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:58,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 20:38:58,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:58,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:38:58,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:58,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:38:58,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:58,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-28 20:38:58,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:58,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-11-28 20:38:58,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:58,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-11-28 20:38:58,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:58,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-11-28 20:38:58,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:58,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-11-28 20:38:58,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:58,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2023-11-28 20:38:58,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:58,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2023-11-28 20:38:58,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:58,075 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 617 trivial. 0 not checked. [2023-11-28 20:38:58,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:58,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866854318] [2023-11-28 20:38:58,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866854318] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:38:58,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682621301] [2023-11-28 20:38:58,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:58,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:38:58,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:38:58,077 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:38:58,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-28 20:38:58,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:58,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 855 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 20:38:58,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:38:58,312 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 607 trivial. 0 not checked. [2023-11-28 20:38:58,312 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:38:58,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682621301] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:58,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:38:58,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2023-11-28 20:38:58,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179966129] [2023-11-28 20:38:58,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:58,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:38:58,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:58,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:38:58,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-28 20:38:58,314 INFO L87 Difference]: Start difference. First operand 714 states and 951 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-28 20:38:58,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:38:58,451 INFO L93 Difference]: Finished difference Result 1177 states and 1607 transitions. [2023-11-28 20:38:58,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:38:58,452 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 260 [2023-11-28 20:38:58,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:38:58,458 INFO L225 Difference]: With dead ends: 1177 [2023-11-28 20:38:58,458 INFO L226 Difference]: Without dead ends: 726 [2023-11-28 20:38:58,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-28 20:38:58,460 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 15 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 20:38:58,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 668 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 20:38:58,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2023-11-28 20:38:58,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 726. [2023-11-28 20:38:58,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 726 states, 615 states have (on average 1.3447154471544716) internal successors, (827), 624 states have internal predecessors, (827), 69 states have call successors, (69), 41 states have call predecessors, (69), 41 states have return successors, (69), 68 states have call predecessors, (69), 69 states have call successors, (69) [2023-11-28 20:38:58,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 965 transitions. [2023-11-28 20:38:58,542 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 965 transitions. Word has length 260 [2023-11-28 20:38:58,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:38:58,542 INFO L495 AbstractCegarLoop]: Abstraction has 726 states and 965 transitions. [2023-11-28 20:38:58,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-28 20:38:58,543 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 965 transitions. [2023-11-28 20:38:58,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2023-11-28 20:38:58,546 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:38:58,546 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:38:58,553 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-28 20:38:58,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-28 20:38:58,747 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:38:58,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:58,748 INFO L85 PathProgramCache]: Analyzing trace with hash 75189186, now seen corresponding path program 1 times [2023-11-28 20:38:58,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:58,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213375662] [2023-11-28 20:38:58,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:58,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:58,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:58,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:38:58,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:58,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:38:58,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:58,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:38:58,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:58,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:38:58,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:58,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:38:58,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:58,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:38:58,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:58,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:38:58,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:58,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:38:58,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:58,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:38:58,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:58,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:38:58,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:58,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:38:58,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:58,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:38:58,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:58,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 20:38:58,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:58,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:38:58,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:58,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:38:58,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:58,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-28 20:38:58,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:58,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-11-28 20:38:58,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:58,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-11-28 20:38:58,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:58,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-11-28 20:38:58,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:58,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-11-28 20:38:58,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:58,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2023-11-28 20:38:58,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:58,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-11-28 20:38:58,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:58,957 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2023-11-28 20:38:58,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:58,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213375662] [2023-11-28 20:38:58,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213375662] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:58,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:38:58,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:38:58,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379389424] [2023-11-28 20:38:58,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:58,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:38:58,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:58,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:38:58,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:38:58,959 INFO L87 Difference]: Start difference. First operand 726 states and 965 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-28 20:38:59,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:38:59,237 INFO L93 Difference]: Finished difference Result 1191 states and 1621 transitions. [2023-11-28 20:38:59,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:38:59,238 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 261 [2023-11-28 20:38:59,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:38:59,242 INFO L225 Difference]: With dead ends: 1191 [2023-11-28 20:38:59,242 INFO L226 Difference]: Without dead ends: 707 [2023-11-28 20:38:59,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:38:59,243 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 59 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 20:38:59,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 471 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 20:38:59,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2023-11-28 20:38:59,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 707. [2023-11-28 20:38:59,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 707 states, 597 states have (on average 1.3266331658291457) internal successors, (792), 605 states have internal predecessors, (792), 69 states have call successors, (69), 41 states have call predecessors, (69), 40 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2023-11-28 20:38:59,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 929 transitions. [2023-11-28 20:38:59,284 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 929 transitions. Word has length 261 [2023-11-28 20:38:59,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:38:59,285 INFO L495 AbstractCegarLoop]: Abstraction has 707 states and 929 transitions. [2023-11-28 20:38:59,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-28 20:38:59,285 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 929 transitions. [2023-11-28 20:38:59,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2023-11-28 20:38:59,286 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:38:59,286 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:38:59,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-28 20:38:59,287 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:38:59,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:59,287 INFO L85 PathProgramCache]: Analyzing trace with hash -189143771, now seen corresponding path program 1 times [2023-11-28 20:38:59,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:59,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719025936] [2023-11-28 20:38:59,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:59,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:59,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:59,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:38:59,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:59,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:38:59,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:59,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:38:59,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:59,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:38:59,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:59,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:38:59,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:59,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:38:59,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:59,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:38:59,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:59,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:38:59,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:59,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:38:59,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:59,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:38:59,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:59,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:38:59,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:59,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:38:59,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:59,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 20:38:59,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:59,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:38:59,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:59,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:38:59,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:59,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-28 20:38:59,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:59,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-11-28 20:38:59,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:59,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-11-28 20:38:59,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:59,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-11-28 20:38:59,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:59,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-11-28 20:38:59,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:59,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-11-28 20:38:59,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:59,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2023-11-28 20:38:59,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:59,602 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2023-11-28 20:38:59,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:59,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719025936] [2023-11-28 20:38:59,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719025936] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:59,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:38:59,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 20:38:59,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951128710] [2023-11-28 20:38:59,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:59,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 20:38:59,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:59,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 20:38:59,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-28 20:38:59,604 INFO L87 Difference]: Start difference. First operand 707 states and 929 transitions. Second operand has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-28 20:39:00,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:39:00,200 INFO L93 Difference]: Finished difference Result 1021 states and 1421 transitions. [2023-11-28 20:39:00,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-28 20:39:00,201 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 262 [2023-11-28 20:39:00,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:39:00,207 INFO L225 Difference]: With dead ends: 1021 [2023-11-28 20:39:00,207 INFO L226 Difference]: Without dead ends: 1019 [2023-11-28 20:39:00,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-28 20:39:00,208 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 241 mSDsluCounter, 1171 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 1480 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-28 20:39:00,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 1480 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-28 20:39:00,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1019 states. [2023-11-28 20:39:00,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1019 to 713. [2023-11-28 20:39:00,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 601 states have (on average 1.324459234608985) internal successors, (796), 610 states have internal predecessors, (796), 70 states have call successors, (70), 42 states have call predecessors, (70), 41 states have return successors, (69), 67 states have call predecessors, (69), 69 states have call successors, (69) [2023-11-28 20:39:00,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 935 transitions. [2023-11-28 20:39:00,251 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 935 transitions. Word has length 262 [2023-11-28 20:39:00,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:39:00,252 INFO L495 AbstractCegarLoop]: Abstraction has 713 states and 935 transitions. [2023-11-28 20:39:00,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-28 20:39:00,252 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 935 transitions. [2023-11-28 20:39:00,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2023-11-28 20:39:00,254 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:39:00,254 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:39:00,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-28 20:39:00,254 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:39:00,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:39:00,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1197847061, now seen corresponding path program 1 times [2023-11-28 20:39:00,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:39:00,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163551024] [2023-11-28 20:39:00,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:39:00,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:39:00,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:00,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:39:00,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:00,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:39:00,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:00,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:39:00,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:00,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:39:00,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:00,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:39:00,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:00,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:39:00,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:00,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:39:00,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:00,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:39:00,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:00,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:39:00,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:00,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:39:00,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:00,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:39:00,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:00,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:39:00,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:00,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 20:39:00,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:00,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:39:00,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:00,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:39:00,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:00,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-28 20:39:00,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:00,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-11-28 20:39:00,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:00,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-11-28 20:39:00,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:00,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-11-28 20:39:00,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:00,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-11-28 20:39:00,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:00,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-11-28 20:39:00,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:00,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2023-11-28 20:39:00,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:00,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2023-11-28 20:39:00,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:00,567 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 142 proven. 27 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2023-11-28 20:39:00,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:39:00,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163551024] [2023-11-28 20:39:00,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163551024] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:39:00,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554025804] [2023-11-28 20:39:00,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:39:00,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:39:00,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:39:00,569 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:39:00,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-28 20:39:00,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:00,764 INFO L262 TraceCheckSpWp]: Trace formula consists of 889 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-28 20:39:00,769 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:39:00,968 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 251 proven. 33 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2023-11-28 20:39:00,968 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:39:01,326 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 146 proven. 23 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2023-11-28 20:39:01,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554025804] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:39:01,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 20:39:01,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 19 [2023-11-28 20:39:01,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186618502] [2023-11-28 20:39:01,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 20:39:01,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-28 20:39:01,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:39:01,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-28 20:39:01,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-11-28 20:39:01,330 INFO L87 Difference]: Start difference. First operand 713 states and 935 transitions. Second operand has 19 states, 19 states have (on average 7.578947368421052) internal successors, (144), 14 states have internal predecessors, (144), 5 states have call successors, (28), 5 states have call predecessors, (28), 9 states have return successors, (27), 8 states have call predecessors, (27), 5 states have call successors, (27) [2023-11-28 20:39:03,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:39:03,050 INFO L93 Difference]: Finished difference Result 1772 states and 2442 transitions. [2023-11-28 20:39:03,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-28 20:39:03,051 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 7.578947368421052) internal successors, (144), 14 states have internal predecessors, (144), 5 states have call successors, (28), 5 states have call predecessors, (28), 9 states have return successors, (27), 8 states have call predecessors, (27), 5 states have call successors, (27) Word has length 270 [2023-11-28 20:39:03,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:39:03,058 INFO L225 Difference]: With dead ends: 1772 [2023-11-28 20:39:03,058 INFO L226 Difference]: Without dead ends: 1320 [2023-11-28 20:39:03,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 621 GetRequests, 582 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=211, Invalid=1121, Unknown=0, NotChecked=0, Total=1332 [2023-11-28 20:39:03,061 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 357 mSDsluCounter, 2088 mSDsCounter, 0 mSdLazyCounter, 1590 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 2314 SdHoareTripleChecker+Invalid, 1693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:39:03,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 2314 Invalid, 1693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1590 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-28 20:39:03,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2023-11-28 20:39:03,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 981. [2023-11-28 20:39:03,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 981 states, 829 states have (on average 1.3112183353437876) internal successors, (1087), 839 states have internal predecessors, (1087), 94 states have call successors, (94), 55 states have call predecessors, (94), 57 states have return successors, (98), 93 states have call predecessors, (98), 93 states have call successors, (98) [2023-11-28 20:39:03,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1279 transitions. [2023-11-28 20:39:03,142 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1279 transitions. Word has length 270 [2023-11-28 20:39:03,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:39:03,143 INFO L495 AbstractCegarLoop]: Abstraction has 981 states and 1279 transitions. [2023-11-28 20:39:03,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.578947368421052) internal successors, (144), 14 states have internal predecessors, (144), 5 states have call successors, (28), 5 states have call predecessors, (28), 9 states have return successors, (27), 8 states have call predecessors, (27), 5 states have call successors, (27) [2023-11-28 20:39:03,143 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1279 transitions. [2023-11-28 20:39:03,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2023-11-28 20:39:03,146 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:39:03,146 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:39:03,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-28 20:39:03,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:39:03,347 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:39:03,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:39:03,347 INFO L85 PathProgramCache]: Analyzing trace with hash -236233044, now seen corresponding path program 1 times [2023-11-28 20:39:03,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:39:03,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600662948] [2023-11-28 20:39:03,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:39:03,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:39:03,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:03,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:39:03,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:03,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:39:03,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:03,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:39:03,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:03,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:39:03,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:03,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:39:03,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:03,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:39:03,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:03,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:39:03,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:03,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:39:03,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:03,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:39:03,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:03,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:39:03,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:03,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:39:03,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:03,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:39:03,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:03,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 20:39:03,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:03,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:39:03,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:03,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:39:03,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:03,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-28 20:39:03,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:03,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-11-28 20:39:03,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:03,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-11-28 20:39:03,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:03,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-11-28 20:39:03,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:03,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-11-28 20:39:03,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:03,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-11-28 20:39:03,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:03,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2023-11-28 20:39:03,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:03,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2023-11-28 20:39:03,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:03,525 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 668 trivial. 0 not checked. [2023-11-28 20:39:03,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:39:03,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600662948] [2023-11-28 20:39:03,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600662948] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:39:03,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319937114] [2023-11-28 20:39:03,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:39:03,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:39:03,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:39:03,526 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:39:03,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-28 20:39:03,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:03,723 INFO L262 TraceCheckSpWp]: Trace formula consists of 888 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 20:39:03,728 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:39:03,745 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 607 trivial. 0 not checked. [2023-11-28 20:39:03,745 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:39:03,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319937114] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:39:03,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:39:03,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-11-28 20:39:03,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733359003] [2023-11-28 20:39:03,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:39:03,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:39:03,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:39:03,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:39:03,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:39:03,747 INFO L87 Difference]: Start difference. First operand 981 states and 1279 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-28 20:39:03,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:39:03,866 INFO L93 Difference]: Finished difference Result 1826 states and 2423 transitions. [2023-11-28 20:39:03,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:39:03,867 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 270 [2023-11-28 20:39:03,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:39:03,872 INFO L225 Difference]: With dead ends: 1826 [2023-11-28 20:39:03,872 INFO L226 Difference]: Without dead ends: 965 [2023-11-28 20:39:03,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-28 20:39:03,875 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 11 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:39:03,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 665 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:39:03,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 965 states. [2023-11-28 20:39:03,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 965 to 965. [2023-11-28 20:39:03,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 965 states, 818 states have (on average 1.2995110024449879) internal successors, (1063), 828 states have internal predecessors, (1063), 90 states have call successors, (90), 55 states have call predecessors, (90), 56 states have return successors, (93), 88 states have call predecessors, (93), 89 states have call successors, (93) [2023-11-28 20:39:03,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1246 transitions. [2023-11-28 20:39:03,951 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1246 transitions. Word has length 270 [2023-11-28 20:39:03,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:39:03,952 INFO L495 AbstractCegarLoop]: Abstraction has 965 states and 1246 transitions. [2023-11-28 20:39:03,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-28 20:39:03,952 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1246 transitions. [2023-11-28 20:39:03,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2023-11-28 20:39:03,955 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:39:03,955 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:39:03,962 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-28 20:39:04,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-11-28 20:39:04,162 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:39:04,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:39:04,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1167214169, now seen corresponding path program 1 times [2023-11-28 20:39:04,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:39:04,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090494477] [2023-11-28 20:39:04,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:39:04,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:39:04,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:04,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:39:04,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:04,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:39:04,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:04,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:39:04,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:04,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:39:04,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:04,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:39:04,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:04,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:39:04,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:04,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:39:04,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:04,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:39:04,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:04,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:39:04,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:04,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:39:04,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:04,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:39:04,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:04,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:39:04,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:04,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 20:39:04,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:04,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:39:04,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:04,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-28 20:39:04,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:04,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-28 20:39:04,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:04,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-11-28 20:39:04,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:04,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2023-11-28 20:39:04,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:04,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2023-11-28 20:39:04,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:04,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2023-11-28 20:39:04,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:04,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2023-11-28 20:39:04,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:04,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2023-11-28 20:39:04,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:04,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2023-11-28 20:39:04,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:04,396 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 121 proven. 19 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2023-11-28 20:39:04,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:39:04,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090494477] [2023-11-28 20:39:04,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090494477] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:39:04,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877506325] [2023-11-28 20:39:04,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:39:04,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:39:04,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:39:04,399 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:39:04,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-28 20:39:04,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:04,610 INFO L262 TraceCheckSpWp]: Trace formula consists of 889 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 20:39:04,616 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:39:04,636 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2023-11-28 20:39:04,637 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:39:04,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877506325] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:39:04,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:39:04,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-11-28 20:39:04,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362919643] [2023-11-28 20:39:04,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:39:04,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:39:04,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:39:04,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:39:04,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:39:04,639 INFO L87 Difference]: Start difference. First operand 965 states and 1246 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-28 20:39:04,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:39:04,753 INFO L93 Difference]: Finished difference Result 1674 states and 2207 transitions. [2023-11-28 20:39:04,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:39:04,754 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 273 [2023-11-28 20:39:04,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:39:04,759 INFO L225 Difference]: With dead ends: 1674 [2023-11-28 20:39:04,759 INFO L226 Difference]: Without dead ends: 820 [2023-11-28 20:39:04,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-28 20:39:04,761 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 8 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 20:39:04,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 668 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 20:39:04,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2023-11-28 20:39:04,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 820. [2023-11-28 20:39:04,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 691 states have (on average 1.3024602026049203) internal successors, (900), 701 states have internal predecessors, (900), 81 states have call successors, (81), 48 states have call predecessors, (81), 47 states have return successors, (80), 77 states have call predecessors, (80), 80 states have call successors, (80) [2023-11-28 20:39:04,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1061 transitions. [2023-11-28 20:39:04,833 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1061 transitions. Word has length 273 [2023-11-28 20:39:04,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:39:04,833 INFO L495 AbstractCegarLoop]: Abstraction has 820 states and 1061 transitions. [2023-11-28 20:39:04,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-28 20:39:04,833 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1061 transitions. [2023-11-28 20:39:04,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2023-11-28 20:39:04,836 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:39:04,836 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 8, 8, 8, 7, 6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:39:04,842 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-28 20:39:05,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-11-28 20:39:05,037 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:39:05,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:39:05,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1310518252, now seen corresponding path program 1 times [2023-11-28 20:39:05,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:39:05,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927194038] [2023-11-28 20:39:05,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:39:05,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:39:05,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:05,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:39:05,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:05,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:39:05,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:05,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:39:05,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:05,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:39:05,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:05,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:39:05,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:05,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:39:05,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:05,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:39:05,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:05,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:39:05,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:05,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:39:05,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:05,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:39:05,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:05,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:39:05,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:05,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:39:05,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:05,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 20:39:05,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:05,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:39:05,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:05,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:39:05,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:05,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-28 20:39:05,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:05,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-11-28 20:39:05,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:05,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-11-28 20:39:05,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:05,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-11-28 20:39:05,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:05,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-11-28 20:39:05,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:05,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-11-28 20:39:05,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:05,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2023-11-28 20:39:05,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:05,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2023-11-28 20:39:05,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:05,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2023-11-28 20:39:05,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:05,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2023-11-28 20:39:05,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:05,805 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 16 proven. 146 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2023-11-28 20:39:05,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:39:05,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927194038] [2023-11-28 20:39:05,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927194038] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:39:05,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327400843] [2023-11-28 20:39:05,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:39:05,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:39:05,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:39:05,807 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:39:05,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-28 20:39:06,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:06,012 INFO L262 TraceCheckSpWp]: Trace formula consists of 936 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-28 20:39:06,019 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:39:06,257 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2023-11-28 20:39:06,257 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:39:06,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327400843] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:39:06,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:39:06,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [15] total 23 [2023-11-28 20:39:06,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411315335] [2023-11-28 20:39:06,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:39:06,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-28 20:39:06,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:39:06,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-28 20:39:06,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=460, Unknown=0, NotChecked=0, Total=506 [2023-11-28 20:39:06,260 INFO L87 Difference]: Start difference. First operand 820 states and 1061 transitions. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 9 states have internal predecessors, (104), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-28 20:39:07,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:39:07,001 INFO L93 Difference]: Finished difference Result 2186 states and 2833 transitions. [2023-11-28 20:39:07,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-28 20:39:07,002 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 9 states have internal predecessors, (104), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 285 [2023-11-28 20:39:07,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:39:07,010 INFO L225 Difference]: With dead ends: 2186 [2023-11-28 20:39:07,010 INFO L226 Difference]: Without dead ends: 1727 [2023-11-28 20:39:07,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 327 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=136, Invalid=1196, Unknown=0, NotChecked=0, Total=1332 [2023-11-28 20:39:07,012 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 626 mSDsluCounter, 2407 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 2773 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-28 20:39:07,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [631 Valid, 2773 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-28 20:39:07,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1727 states. [2023-11-28 20:39:07,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1727 to 1353. [2023-11-28 20:39:07,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1353 states, 1126 states have (on average 1.2815275310834813) internal successors, (1443), 1141 states have internal predecessors, (1443), 149 states have call successors, (149), 78 states have call predecessors, (149), 77 states have return successors, (148), 140 states have call predecessors, (148), 148 states have call successors, (148) [2023-11-28 20:39:07,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1353 states to 1353 states and 1740 transitions. [2023-11-28 20:39:07,098 INFO L78 Accepts]: Start accepts. Automaton has 1353 states and 1740 transitions. Word has length 285 [2023-11-28 20:39:07,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:39:07,099 INFO L495 AbstractCegarLoop]: Abstraction has 1353 states and 1740 transitions. [2023-11-28 20:39:07,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 9 states have internal predecessors, (104), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-28 20:39:07,099 INFO L276 IsEmpty]: Start isEmpty. Operand 1353 states and 1740 transitions. [2023-11-28 20:39:07,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2023-11-28 20:39:07,101 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:39:07,102 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:39:07,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-28 20:39:07,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-11-28 20:39:07,302 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:39:07,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:39:07,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1676240983, now seen corresponding path program 1 times [2023-11-28 20:39:07,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:39:07,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011204450] [2023-11-28 20:39:07,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:39:07,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:39:07,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:07,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:39:07,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:07,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:39:07,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:07,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:39:07,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:07,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:39:07,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:07,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:39:07,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:07,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:39:07,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:07,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:39:07,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:07,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:39:07,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:07,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:39:07,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:07,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:39:07,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:07,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:39:07,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:07,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:39:07,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:07,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 20:39:07,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:07,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:39:07,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:07,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:39:07,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:07,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-28 20:39:07,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:07,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-11-28 20:39:07,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:07,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-11-28 20:39:07,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:07,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-11-28 20:39:07,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:07,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-11-28 20:39:07,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:07,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-11-28 20:39:07,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:07,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2023-11-28 20:39:07,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:07,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2023-11-28 20:39:07,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:07,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2023-11-28 20:39:07,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:07,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2023-11-28 20:39:07,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:07,550 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2023-11-28 20:39:07,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:39:07,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011204450] [2023-11-28 20:39:07,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011204450] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:39:07,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:39:07,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 20:39:07,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427852863] [2023-11-28 20:39:07,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:39:07,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 20:39:07,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:39:07,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 20:39:07,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-28 20:39:07,552 INFO L87 Difference]: Start difference. First operand 1353 states and 1740 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 6 states have internal predecessors, (95), 5 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-28 20:39:08,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:39:08,075 INFO L93 Difference]: Finished difference Result 2883 states and 3939 transitions. [2023-11-28 20:39:08,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 20:39:08,076 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 6 states have internal predecessors, (95), 5 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 291 [2023-11-28 20:39:08,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:39:08,088 INFO L225 Difference]: With dead ends: 2883 [2023-11-28 20:39:08,088 INFO L226 Difference]: Without dead ends: 1876 [2023-11-28 20:39:08,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-28 20:39:08,091 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 226 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-28 20:39:08,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 943 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-28 20:39:08,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1876 states. [2023-11-28 20:39:08,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1876 to 1446. [2023-11-28 20:39:08,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1446 states, 1198 states have (on average 1.2921535893155258) internal successors, (1548), 1213 states have internal predecessors, (1548), 170 states have call successors, (170), 78 states have call predecessors, (170), 77 states have return successors, (169), 161 states have call predecessors, (169), 169 states have call successors, (169) [2023-11-28 20:39:08,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1446 states to 1446 states and 1887 transitions. [2023-11-28 20:39:08,243 INFO L78 Accepts]: Start accepts. Automaton has 1446 states and 1887 transitions. Word has length 291 [2023-11-28 20:39:08,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:39:08,244 INFO L495 AbstractCegarLoop]: Abstraction has 1446 states and 1887 transitions. [2023-11-28 20:39:08,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 6 states have internal predecessors, (95), 5 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-28 20:39:08,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1446 states and 1887 transitions. [2023-11-28 20:39:08,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2023-11-28 20:39:08,248 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:39:08,248 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:39:08,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-11-28 20:39:08,249 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:39:08,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:39:08,249 INFO L85 PathProgramCache]: Analyzing trace with hash 788311333, now seen corresponding path program 1 times [2023-11-28 20:39:08,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:39:08,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366611226] [2023-11-28 20:39:08,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:39:08,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:39:08,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:08,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:39:08,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:08,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:39:08,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:08,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:39:08,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:08,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:39:08,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:08,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:39:08,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:08,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:39:08,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:08,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:39:08,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:08,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:39:08,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:08,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:39:08,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:08,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:39:08,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:08,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:39:08,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:08,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:39:08,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:08,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 20:39:08,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:08,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:39:08,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:08,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:39:08,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:08,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-28 20:39:08,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:08,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-11-28 20:39:08,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:08,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-11-28 20:39:08,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:08,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-11-28 20:39:08,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:08,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-11-28 20:39:08,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:08,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-11-28 20:39:08,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:08,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2023-11-28 20:39:08,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:08,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2023-11-28 20:39:08,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:08,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2023-11-28 20:39:08,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:08,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2023-11-28 20:39:08,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:08,604 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2023-11-28 20:39:08,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:39:08,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366611226] [2023-11-28 20:39:08,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366611226] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:39:08,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322603039] [2023-11-28 20:39:08,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:39:08,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:39:08,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:39:08,605 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:39:08,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-28 20:39:08,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:08,817 INFO L262 TraceCheckSpWp]: Trace formula consists of 947 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-28 20:39:08,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:39:08,986 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2023-11-28 20:39:08,986 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:39:08,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322603039] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:39:08,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:39:08,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 19 [2023-11-28 20:39:08,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67892716] [2023-11-28 20:39:08,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:39:08,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-28 20:39:08,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:39:08,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-28 20:39:08,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2023-11-28 20:39:08,989 INFO L87 Difference]: Start difference. First operand 1446 states and 1887 transitions. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 7 states have internal predecessors, (108), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-28 20:39:09,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:39:09,498 INFO L93 Difference]: Finished difference Result 3308 states and 4439 transitions. [2023-11-28 20:39:09,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-28 20:39:09,499 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 7 states have internal predecessors, (108), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 291 [2023-11-28 20:39:09,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:39:09,509 INFO L225 Difference]: With dead ends: 3308 [2023-11-28 20:39:09,510 INFO L226 Difference]: Without dead ends: 2215 [2023-11-28 20:39:09,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2023-11-28 20:39:09,513 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 171 mSDsluCounter, 1567 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 1948 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-28 20:39:09,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 1948 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-28 20:39:09,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2215 states. [2023-11-28 20:39:09,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2215 to 1666. [2023-11-28 20:39:09,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1666 states, 1381 states have (on average 1.283128167994207) internal successors, (1772), 1398 states have internal predecessors, (1772), 197 states have call successors, (197), 88 states have call predecessors, (197), 87 states have return successors, (196), 186 states have call predecessors, (196), 196 states have call successors, (196) [2023-11-28 20:39:09,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1666 states to 1666 states and 2165 transitions. [2023-11-28 20:39:09,631 INFO L78 Accepts]: Start accepts. Automaton has 1666 states and 2165 transitions. Word has length 291 [2023-11-28 20:39:09,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:39:09,631 INFO L495 AbstractCegarLoop]: Abstraction has 1666 states and 2165 transitions. [2023-11-28 20:39:09,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 7 states have internal predecessors, (108), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-28 20:39:09,632 INFO L276 IsEmpty]: Start isEmpty. Operand 1666 states and 2165 transitions. [2023-11-28 20:39:09,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2023-11-28 20:39:09,634 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:39:09,634 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:39:09,639 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-28 20:39:09,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:39:09,835 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:39:09,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:39:09,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1463644453, now seen corresponding path program 1 times [2023-11-28 20:39:09,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:39:09,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170899046] [2023-11-28 20:39:09,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:39:09,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:39:09,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:10,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:39:10,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:10,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:39:10,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:10,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:39:10,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:10,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:39:10,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:10,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:39:10,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:10,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:39:10,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:10,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:39:10,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:10,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:39:10,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:10,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:39:10,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:10,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:39:10,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:10,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:39:10,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:10,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:39:10,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:10,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 20:39:10,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:10,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:39:10,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:10,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:39:10,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:10,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-28 20:39:10,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:10,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-11-28 20:39:10,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:10,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-11-28 20:39:10,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:10,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-11-28 20:39:10,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:10,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-11-28 20:39:10,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:10,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-11-28 20:39:10,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:10,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2023-11-28 20:39:10,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:10,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2023-11-28 20:39:10,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:10,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2023-11-28 20:39:10,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:10,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2023-11-28 20:39:10,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:10,307 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-11-28 20:39:10,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:39:10,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170899046] [2023-11-28 20:39:10,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170899046] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:39:10,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94335418] [2023-11-28 20:39:10,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:39:10,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:39:10,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:39:10,310 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:39:10,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-28 20:39:10,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:10,520 INFO L262 TraceCheckSpWp]: Trace formula consists of 947 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-28 20:39:10,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:39:10,697 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2023-11-28 20:39:10,698 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:39:10,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94335418] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:39:10,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:39:10,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 17 [2023-11-28 20:39:10,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204630224] [2023-11-28 20:39:10,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:39:10,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-28 20:39:10,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:39:10,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-28 20:39:10,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2023-11-28 20:39:10,700 INFO L87 Difference]: Start difference. First operand 1666 states and 2165 transitions. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 9 states have internal predecessors, (110), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-28 20:39:11,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:39:11,551 INFO L93 Difference]: Finished difference Result 3586 states and 4756 transitions. [2023-11-28 20:39:11,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-28 20:39:11,552 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 9 states have internal predecessors, (110), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 291 [2023-11-28 20:39:11,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:39:11,562 INFO L225 Difference]: With dead ends: 3586 [2023-11-28 20:39:11,563 INFO L226 Difference]: Without dead ends: 2333 [2023-11-28 20:39:11,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=137, Invalid=793, Unknown=0, NotChecked=0, Total=930 [2023-11-28 20:39:11,566 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 706 mSDsluCounter, 2475 mSDsCounter, 0 mSdLazyCounter, 864 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 2890 SdHoareTripleChecker+Invalid, 939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-28 20:39:11,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [721 Valid, 2890 Invalid, 939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 864 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-28 20:39:11,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2333 states. [2023-11-28 20:39:11,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2333 to 1633. [2023-11-28 20:39:11,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1633 states, 1358 states have (on average 1.2768777614138438) internal successors, (1734), 1375 states have internal predecessors, (1734), 187 states have call successors, (187), 88 states have call predecessors, (187), 87 states have return successors, (186), 176 states have call predecessors, (186), 186 states have call successors, (186) [2023-11-28 20:39:11,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1633 states to 1633 states and 2107 transitions. [2023-11-28 20:39:11,690 INFO L78 Accepts]: Start accepts. Automaton has 1633 states and 2107 transitions. Word has length 291 [2023-11-28 20:39:11,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:39:11,691 INFO L495 AbstractCegarLoop]: Abstraction has 1633 states and 2107 transitions. [2023-11-28 20:39:11,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 9 states have internal predecessors, (110), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-28 20:39:11,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1633 states and 2107 transitions. [2023-11-28 20:39:11,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2023-11-28 20:39:11,693 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:39:11,694 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:39:11,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-28 20:39:11,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-11-28 20:39:11,894 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:39:11,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:39:11,895 INFO L85 PathProgramCache]: Analyzing trace with hash -427842393, now seen corresponding path program 1 times [2023-11-28 20:39:11,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:39:11,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140616317] [2023-11-28 20:39:11,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:39:11,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:39:11,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:11,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:39:11,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:11,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:39:11,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:11,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:39:11,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:11,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:39:11,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:11,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:39:11,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:11,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:39:11,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:11,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:39:11,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:11,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:39:11,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:11,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:39:12,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:12,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:39:12,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:12,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:39:12,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:12,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:39:12,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:12,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 20:39:12,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:12,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:39:12,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:12,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:39:12,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:12,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-28 20:39:12,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:12,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-11-28 20:39:12,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:12,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-11-28 20:39:12,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:12,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-11-28 20:39:12,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:12,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-11-28 20:39:12,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:12,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-11-28 20:39:12,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:12,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2023-11-28 20:39:12,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:12,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2023-11-28 20:39:12,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:12,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2023-11-28 20:39:12,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:12,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2023-11-28 20:39:12,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:12,053 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2023-11-28 20:39:12,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:39:12,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140616317] [2023-11-28 20:39:12,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140616317] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:39:12,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:39:12,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 20:39:12,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191189412] [2023-11-28 20:39:12,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:39:12,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:39:12,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:39:12,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:39:12,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:39:12,056 INFO L87 Difference]: Start difference. First operand 1633 states and 2107 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-11-28 20:39:12,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:39:12,634 INFO L93 Difference]: Finished difference Result 3178 states and 4147 transitions. [2023-11-28 20:39:12,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-28 20:39:12,634 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 291 [2023-11-28 20:39:12,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:39:12,643 INFO L225 Difference]: With dead ends: 3178 [2023-11-28 20:39:12,643 INFO L226 Difference]: Without dead ends: 1909 [2023-11-28 20:39:12,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-28 20:39:12,645 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 299 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-28 20:39:12,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 568 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-28 20:39:12,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1909 states. [2023-11-28 20:39:12,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1909 to 1662. [2023-11-28 20:39:12,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1662 states, 1379 states have (on average 1.2799129804205946) internal successors, (1765), 1396 states have internal predecessors, (1765), 195 states have call successors, (195), 88 states have call predecessors, (195), 87 states have return successors, (194), 184 states have call predecessors, (194), 194 states have call successors, (194) [2023-11-28 20:39:12,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2154 transitions. [2023-11-28 20:39:12,750 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 2154 transitions. Word has length 291 [2023-11-28 20:39:12,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:39:12,750 INFO L495 AbstractCegarLoop]: Abstraction has 1662 states and 2154 transitions. [2023-11-28 20:39:12,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-11-28 20:39:12,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 2154 transitions. [2023-11-28 20:39:12,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2023-11-28 20:39:12,752 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:39:12,753 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:39:12,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-11-28 20:39:12,753 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:39:12,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:39:12,753 INFO L85 PathProgramCache]: Analyzing trace with hash 559736868, now seen corresponding path program 1 times [2023-11-28 20:39:12,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:39:12,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905343841] [2023-11-28 20:39:12,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:39:12,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:39:12,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:12,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:39:12,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:12,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:39:12,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:12,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:39:12,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:12,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:39:12,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:12,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:39:12,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:12,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:39:12,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:12,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:39:12,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:12,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:39:12,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:12,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:39:12,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:12,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:39:12,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:12,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:39:12,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:12,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:39:12,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:12,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 20:39:12,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:12,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:39:12,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:12,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:39:12,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:12,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-28 20:39:12,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:12,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-11-28 20:39:12,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:12,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-11-28 20:39:12,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:12,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-11-28 20:39:12,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:12,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-11-28 20:39:12,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:12,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-11-28 20:39:12,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:12,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2023-11-28 20:39:12,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:12,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2023-11-28 20:39:12,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:12,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2023-11-28 20:39:12,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:12,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2023-11-28 20:39:12,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:12,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-11-28 20:39:12,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:12,893 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 704 trivial. 0 not checked. [2023-11-28 20:39:12,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:39:12,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905343841] [2023-11-28 20:39:12,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905343841] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:39:12,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:39:12,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 20:39:12,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759287354] [2023-11-28 20:39:12,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:39:12,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:39:12,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:39:12,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:39:12,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:39:12,895 INFO L87 Difference]: Start difference. First operand 1662 states and 2154 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-28 20:39:13,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:39:13,586 INFO L93 Difference]: Finished difference Result 2979 states and 3893 transitions. [2023-11-28 20:39:13,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 20:39:13,586 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 299 [2023-11-28 20:39:13,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:39:13,594 INFO L225 Difference]: With dead ends: 2979 [2023-11-28 20:39:13,594 INFO L226 Difference]: Without dead ends: 1673 [2023-11-28 20:39:13,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-28 20:39:13,597 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 474 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-28 20:39:13,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 791 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-28 20:39:13,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1673 states. [2023-11-28 20:39:13,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1673 to 1434. [2023-11-28 20:39:13,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1434 states, 1200 states have (on average 1.2608333333333333) internal successors, (1513), 1208 states have internal predecessors, (1513), 163 states have call successors, (163), 70 states have call predecessors, (163), 70 states have return successors, (163), 155 states have call predecessors, (163), 163 states have call successors, (163) [2023-11-28 20:39:13,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1434 states to 1434 states and 1839 transitions. [2023-11-28 20:39:13,684 INFO L78 Accepts]: Start accepts. Automaton has 1434 states and 1839 transitions. Word has length 299 [2023-11-28 20:39:13,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:39:13,685 INFO L495 AbstractCegarLoop]: Abstraction has 1434 states and 1839 transitions. [2023-11-28 20:39:13,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-28 20:39:13,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1434 states and 1839 transitions. [2023-11-28 20:39:13,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2023-11-28 20:39:13,688 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:39:13,689 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:39:13,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-11-28 20:39:13,689 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:39:13,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:39:13,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1991120, now seen corresponding path program 1 times [2023-11-28 20:39:13,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:39:13,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361790477] [2023-11-28 20:39:13,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:39:13,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:39:13,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:14,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:39:14,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:14,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:39:14,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:14,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:39:14,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:14,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:39:14,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:14,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:39:14,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:14,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:39:14,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:14,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:39:14,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:14,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:39:14,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:14,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:39:14,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:14,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:39:14,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:14,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:39:14,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:14,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:39:14,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:14,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 20:39:14,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:14,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:39:14,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:14,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:39:14,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:14,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-28 20:39:14,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:14,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-11-28 20:39:14,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:14,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-11-28 20:39:14,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:14,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-11-28 20:39:14,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:14,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-11-28 20:39:14,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:14,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-11-28 20:39:14,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:14,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2023-11-28 20:39:14,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:14,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2023-11-28 20:39:14,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:14,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2023-11-28 20:39:14,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:14,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2023-11-28 20:39:14,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:14,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2023-11-28 20:39:14,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:14,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2023-11-28 20:39:14,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:14,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2023-11-28 20:39:14,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:14,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2023-11-28 20:39:14,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:14,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2023-11-28 20:39:14,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:14,358 INFO L134 CoverageAnalysis]: Checked inductivity of 875 backedges. 15 proven. 15 refuted. 0 times theorem prover too weak. 845 trivial. 0 not checked. [2023-11-28 20:39:14,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:39:14,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361790477] [2023-11-28 20:39:14,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361790477] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:39:14,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642071688] [2023-11-28 20:39:14,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:39:14,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:39:14,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:39:14,360 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:39:14,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-28 20:39:14,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:14,569 INFO L262 TraceCheckSpWp]: Trace formula consists of 1219 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-28 20:39:14,574 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:39:14,876 INFO L134 CoverageAnalysis]: Checked inductivity of 875 backedges. 224 proven. 75 refuted. 0 times theorem prover too weak. 576 trivial. 0 not checked. [2023-11-28 20:39:14,877 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:39:15,422 INFO L134 CoverageAnalysis]: Checked inductivity of 875 backedges. 34 proven. 71 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2023-11-28 20:39:15,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642071688] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:39:15,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 20:39:15,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 13] total 28 [2023-11-28 20:39:15,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552323454] [2023-11-28 20:39:15,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 20:39:15,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-28 20:39:15,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:39:15,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-28 20:39:15,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2023-11-28 20:39:15,425 INFO L87 Difference]: Start difference. First operand 1434 states and 1839 transitions. Second operand has 28 states, 28 states have (on average 8.571428571428571) internal successors, (240), 24 states have internal predecessors, (240), 8 states have call successors, (51), 9 states have call predecessors, (51), 13 states have return successors, (51), 11 states have call predecessors, (51), 8 states have call successors, (51) [2023-11-28 20:39:29,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:39:29,482 INFO L93 Difference]: Finished difference Result 10629 states and 14471 transitions. [2023-11-28 20:39:29,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 185 states. [2023-11-28 20:39:29,482 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 8.571428571428571) internal successors, (240), 24 states have internal predecessors, (240), 8 states have call successors, (51), 9 states have call predecessors, (51), 13 states have return successors, (51), 11 states have call predecessors, (51), 8 states have call successors, (51) Word has length 339 [2023-11-28 20:39:29,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:39:29,520 INFO L225 Difference]: With dead ends: 10629 [2023-11-28 20:39:29,520 INFO L226 Difference]: Without dead ends: 9495 [2023-11-28 20:39:29,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 940 GetRequests, 724 SyntacticMatches, 8 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16043 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=4891, Invalid=38999, Unknown=0, NotChecked=0, Total=43890 [2023-11-28 20:39:29,544 INFO L413 NwaCegarLoop]: 541 mSDtfsCounter, 6666 mSDsluCounter, 6615 mSDsCounter, 0 mSdLazyCounter, 6208 mSolverCounterSat, 2089 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6666 SdHoareTripleChecker+Valid, 7156 SdHoareTripleChecker+Invalid, 8297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2089 IncrementalHoareTripleChecker+Valid, 6208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-11-28 20:39:29,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6666 Valid, 7156 Invalid, 8297 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2089 Valid, 6208 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-11-28 20:39:29,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9495 states. [2023-11-28 20:39:30,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9495 to 5945. [2023-11-28 20:39:30,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5945 states, 4697 states have (on average 1.2837981690440707) internal successors, (6030), 4751 states have internal predecessors, (6030), 891 states have call successors, (891), 332 states have call predecessors, (891), 356 states have return successors, (939), 861 states have call predecessors, (939), 891 states have call successors, (939) [2023-11-28 20:39:30,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5945 states to 5945 states and 7860 transitions. [2023-11-28 20:39:30,328 INFO L78 Accepts]: Start accepts. Automaton has 5945 states and 7860 transitions. Word has length 339 [2023-11-28 20:39:30,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:39:30,328 INFO L495 AbstractCegarLoop]: Abstraction has 5945 states and 7860 transitions. [2023-11-28 20:39:30,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 8.571428571428571) internal successors, (240), 24 states have internal predecessors, (240), 8 states have call successors, (51), 9 states have call predecessors, (51), 13 states have return successors, (51), 11 states have call predecessors, (51), 8 states have call successors, (51) [2023-11-28 20:39:30,329 INFO L276 IsEmpty]: Start isEmpty. Operand 5945 states and 7860 transitions. [2023-11-28 20:39:30,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2023-11-28 20:39:30,345 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:39:30,345 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:39:30,352 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-28 20:39:30,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-11-28 20:39:30,546 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:39:30,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:39:30,546 INFO L85 PathProgramCache]: Analyzing trace with hash -418385459, now seen corresponding path program 1 times [2023-11-28 20:39:30,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:39:30,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623731095] [2023-11-28 20:39:30,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:39:30,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:39:30,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:30,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:39:30,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:30,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:39:30,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:30,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:39:30,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:30,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:39:30,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:30,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:39:30,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:30,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:39:30,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:30,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:39:30,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:30,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:39:30,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:30,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:39:30,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:30,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:39:30,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:30,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:39:30,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:30,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:39:30,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:30,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 20:39:30,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:30,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:39:30,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:30,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:39:30,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:30,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-28 20:39:30,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:30,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-11-28 20:39:30,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:30,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-11-28 20:39:30,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:30,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-11-28 20:39:30,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:30,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-11-28 20:39:30,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:30,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-11-28 20:39:30,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:30,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2023-11-28 20:39:30,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:30,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2023-11-28 20:39:30,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:30,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2023-11-28 20:39:30,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:30,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2023-11-28 20:39:30,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:30,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2023-11-28 20:39:30,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:30,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2023-11-28 20:39:30,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:30,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2023-11-28 20:39:30,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:30,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2023-11-28 20:39:30,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:30,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2023-11-28 20:39:30,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:30,751 INFO L134 CoverageAnalysis]: Checked inductivity of 875 backedges. 44 proven. 5 refuted. 0 times theorem prover too weak. 826 trivial. 0 not checked. [2023-11-28 20:39:30,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:39:30,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623731095] [2023-11-28 20:39:30,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623731095] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:39:30,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42469562] [2023-11-28 20:39:30,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:39:30,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:39:30,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:39:30,753 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:39:30,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-28 20:39:30,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:30,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 1217 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-28 20:39:30,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:39:31,074 INFO L134 CoverageAnalysis]: Checked inductivity of 875 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 711 trivial. 0 not checked. [2023-11-28 20:39:31,075 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:39:31,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42469562] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:39:31,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:39:31,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2023-11-28 20:39:31,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181057707] [2023-11-28 20:39:31,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:39:31,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-28 20:39:31,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:39:31,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-28 20:39:31,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-28 20:39:31,077 INFO L87 Difference]: Start difference. First operand 5945 states and 7860 transitions. Second operand has 8 states, 8 states have (on average 15.25) internal successors, (122), 7 states have internal predecessors, (122), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-28 20:39:32,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:39:32,027 INFO L93 Difference]: Finished difference Result 12859 states and 17105 transitions. [2023-11-28 20:39:32,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-28 20:39:32,027 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.25) internal successors, (122), 7 states have internal predecessors, (122), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) Word has length 339 [2023-11-28 20:39:32,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:39:32,052 INFO L225 Difference]: With dead ends: 12859 [2023-11-28 20:39:32,052 INFO L226 Difference]: Without dead ends: 7399 [2023-11-28 20:39:32,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 393 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2023-11-28 20:39:32,061 INFO L413 NwaCegarLoop]: 403 mSDtfsCounter, 164 mSDsluCounter, 1927 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 2330 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 20:39:32,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 2330 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 20:39:32,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7399 states. [2023-11-28 20:39:32,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7399 to 4218. [2023-11-28 20:39:32,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4218 states, 3381 states have (on average 1.259094942324756) internal successors, (4257), 3429 states have internal predecessors, (4257), 570 states have call successors, (570), 245 states have call predecessors, (570), 266 states have return successors, (600), 543 states have call predecessors, (600), 570 states have call successors, (600) [2023-11-28 20:39:32,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4218 states to 4218 states and 5427 transitions. [2023-11-28 20:39:32,635 INFO L78 Accepts]: Start accepts. Automaton has 4218 states and 5427 transitions. Word has length 339 [2023-11-28 20:39:32,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:39:32,636 INFO L495 AbstractCegarLoop]: Abstraction has 4218 states and 5427 transitions. [2023-11-28 20:39:32,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.25) internal successors, (122), 7 states have internal predecessors, (122), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-28 20:39:32,636 INFO L276 IsEmpty]: Start isEmpty. Operand 4218 states and 5427 transitions. [2023-11-28 20:39:32,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2023-11-28 20:39:32,645 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:39:32,646 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:39:32,651 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-28 20:39:32,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-11-28 20:39:32,846 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:39:32,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:39:32,847 INFO L85 PathProgramCache]: Analyzing trace with hash 158160815, now seen corresponding path program 1 times [2023-11-28 20:39:32,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:39:32,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040691093] [2023-11-28 20:39:32,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:39:32,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:39:32,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:33,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:39:33,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:33,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:39:33,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:33,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:39:33,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:33,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:39:33,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:33,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:39:33,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:33,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:39:33,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:33,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:39:33,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:33,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:39:33,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:33,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:39:33,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:33,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:39:33,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:33,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:39:33,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:33,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:39:33,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:33,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 20:39:33,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:33,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:39:33,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:33,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:39:33,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:33,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-28 20:39:33,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:33,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-11-28 20:39:33,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:33,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-11-28 20:39:33,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:33,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-11-28 20:39:33,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:33,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-11-28 20:39:33,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:33,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2023-11-28 20:39:33,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:33,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2023-11-28 20:39:33,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:33,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2023-11-28 20:39:33,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:33,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2023-11-28 20:39:33,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:33,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2023-11-28 20:39:33,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:33,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2023-11-28 20:39:33,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:33,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2023-11-28 20:39:33,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:33,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2023-11-28 20:39:33,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:33,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2023-11-28 20:39:33,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:33,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-11-28 20:39:33,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:33,685 INFO L134 CoverageAnalysis]: Checked inductivity of 872 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 845 trivial. 0 not checked. [2023-11-28 20:39:33,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:39:33,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040691093] [2023-11-28 20:39:33,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040691093] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:39:33,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139381609] [2023-11-28 20:39:33,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:39:33,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:39:33,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:39:33,687 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:39:33,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-28 20:39:33,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:33,903 INFO L262 TraceCheckSpWp]: Trace formula consists of 1220 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-28 20:39:33,911 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:39:34,239 INFO L134 CoverageAnalysis]: Checked inductivity of 872 backedges. 190 proven. 102 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2023-11-28 20:39:34,240 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:39:34,724 INFO L134 CoverageAnalysis]: Checked inductivity of 872 backedges. 33 proven. 69 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2023-11-28 20:39:34,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139381609] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:39:34,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 20:39:34,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 30 [2023-11-28 20:39:34,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149251748] [2023-11-28 20:39:34,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 20:39:34,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-28 20:39:34,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:39:34,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-28 20:39:34,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=788, Unknown=0, NotChecked=0, Total=870 [2023-11-28 20:39:34,728 INFO L87 Difference]: Start difference. First operand 4218 states and 5427 transitions. Second operand has 30 states, 30 states have (on average 8.166666666666666) internal successors, (245), 26 states have internal predecessors, (245), 9 states have call successors, (54), 9 states have call predecessors, (54), 13 states have return successors, (54), 12 states have call predecessors, (54), 9 states have call successors, (54) [2023-11-28 20:40:21,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:40:21,136 INFO L93 Difference]: Finished difference Result 18341 states and 23671 transitions. [2023-11-28 20:40:21,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 473 states. [2023-11-28 20:40:21,136 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 8.166666666666666) internal successors, (245), 26 states have internal predecessors, (245), 9 states have call successors, (54), 9 states have call predecessors, (54), 13 states have return successors, (54), 12 states have call predecessors, (54), 9 states have call successors, (54) Word has length 340 [2023-11-28 20:40:21,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:40:21,167 INFO L225 Difference]: With dead ends: 18341 [2023-11-28 20:40:21,167 INFO L226 Difference]: Without dead ends: 14608 [2023-11-28 20:40:21,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1245 GetRequests, 745 SyntacticMatches, 1 SemanticMatches, 499 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109682 ImplicationChecksByTransitivity, 32.7s TimeCoverageRelationStatistics Valid=18823, Invalid=231677, Unknown=0, NotChecked=0, Total=250500 [2023-11-28 20:40:21,204 INFO L413 NwaCegarLoop]: 1015 mSDtfsCounter, 6179 mSDsluCounter, 13158 mSDsCounter, 0 mSdLazyCounter, 14009 mSolverCounterSat, 1943 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6179 SdHoareTripleChecker+Valid, 14173 SdHoareTripleChecker+Invalid, 15952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1943 IncrementalHoareTripleChecker+Valid, 14009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2023-11-28 20:40:21,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6179 Valid, 14173 Invalid, 15952 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1943 Valid, 14009 Invalid, 0 Unknown, 0 Unchecked, 10.6s Time] [2023-11-28 20:40:21,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14608 states. [2023-11-28 20:40:22,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14608 to 7404. [2023-11-28 20:40:22,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7404 states, 5933 states have (on average 1.2605764368784764) internal successors, (7479), 6018 states have internal predecessors, (7479), 981 states have call successors, (981), 434 states have call predecessors, (981), 489 states have return successors, (1066), 951 states have call predecessors, (1066), 981 states have call successors, (1066) [2023-11-28 20:40:22,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7404 states to 7404 states and 9526 transitions. [2023-11-28 20:40:22,400 INFO L78 Accepts]: Start accepts. Automaton has 7404 states and 9526 transitions. Word has length 340 [2023-11-28 20:40:22,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:40:22,400 INFO L495 AbstractCegarLoop]: Abstraction has 7404 states and 9526 transitions. [2023-11-28 20:40:22,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 8.166666666666666) internal successors, (245), 26 states have internal predecessors, (245), 9 states have call successors, (54), 9 states have call predecessors, (54), 13 states have return successors, (54), 12 states have call predecessors, (54), 9 states have call successors, (54) [2023-11-28 20:40:22,401 INFO L276 IsEmpty]: Start isEmpty. Operand 7404 states and 9526 transitions. [2023-11-28 20:40:22,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2023-11-28 20:40:22,410 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:40:22,411 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:40:22,417 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-28 20:40:22,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2023-11-28 20:40:22,611 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:40:22,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:40:22,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1632992118, now seen corresponding path program 1 times [2023-11-28 20:40:22,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:40:22,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454503358] [2023-11-28 20:40:22,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:40:22,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:40:22,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:22,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:40:22,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:22,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:40:22,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:22,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:40:22,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:22,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:40:22,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:22,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:40:22,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:22,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:40:22,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:22,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:40:22,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:22,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:40:22,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:22,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:40:22,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:22,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:40:22,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:22,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:40:22,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:22,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:40:22,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:22,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 20:40:22,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:22,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:40:22,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:22,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:40:22,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:22,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-28 20:40:22,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:22,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-11-28 20:40:22,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:22,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-11-28 20:40:22,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:22,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-11-28 20:40:22,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:22,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-11-28 20:40:22,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:22,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-11-28 20:40:22,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:22,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2023-11-28 20:40:22,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:22,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2023-11-28 20:40:22,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:22,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2023-11-28 20:40:22,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:22,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2023-11-28 20:40:22,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:22,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2023-11-28 20:40:22,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:22,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2023-11-28 20:40:22,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:22,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2023-11-28 20:40:22,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:22,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2023-11-28 20:40:22,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:22,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2023-11-28 20:40:22,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:22,751 INFO L134 CoverageAnalysis]: Checked inductivity of 872 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 828 trivial. 0 not checked. [2023-11-28 20:40:22,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:40:22,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454503358] [2023-11-28 20:40:22,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454503358] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:40:22,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:40:22,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 20:40:22,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880718235] [2023-11-28 20:40:22,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:40:22,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:40:22,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:40:22,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:40:22,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:40:22,753 INFO L87 Difference]: Start difference. First operand 7404 states and 9526 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-28 20:40:24,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:40:24,106 INFO L93 Difference]: Finished difference Result 15052 states and 19331 transitions. [2023-11-28 20:40:24,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 20:40:24,107 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 341 [2023-11-28 20:40:24,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:40:24,133 INFO L225 Difference]: With dead ends: 15052 [2023-11-28 20:40:24,134 INFO L226 Difference]: Without dead ends: 7224 [2023-11-28 20:40:24,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-28 20:40:24,147 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 111 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 20:40:24,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 600 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 20:40:24,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7224 states. [2023-11-28 20:40:25,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7224 to 7224. [2023-11-28 20:40:25,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7224 states, 5808 states have (on average 1.2226239669421488) internal successors, (7101), 5873 states have internal predecessors, (7101), 981 states have call successors, (981), 434 states have call predecessors, (981), 434 states have return successors, (981), 916 states have call predecessors, (981), 981 states have call successors, (981) [2023-11-28 20:40:25,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7224 states to 7224 states and 9063 transitions. [2023-11-28 20:40:25,380 INFO L78 Accepts]: Start accepts. Automaton has 7224 states and 9063 transitions. Word has length 341 [2023-11-28 20:40:25,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:40:25,381 INFO L495 AbstractCegarLoop]: Abstraction has 7224 states and 9063 transitions. [2023-11-28 20:40:25,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-28 20:40:25,381 INFO L276 IsEmpty]: Start isEmpty. Operand 7224 states and 9063 transitions. [2023-11-28 20:40:25,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2023-11-28 20:40:25,393 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:40:25,393 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 7, 7, 7, 7, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:40:25,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-11-28 20:40:25,393 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:40:25,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:40:25,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1276309712, now seen corresponding path program 1 times [2023-11-28 20:40:25,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:40:25,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147027785] [2023-11-28 20:40:25,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:40:25,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:40:25,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:25,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:40:25,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:25,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:40:25,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:25,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:40:25,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:25,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:40:25,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:25,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:40:25,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:25,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:40:25,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:25,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:40:25,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:25,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:40:25,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:25,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:40:25,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:25,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:40:25,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:25,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:40:25,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:25,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:40:25,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:25,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 20:40:25,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:25,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:40:25,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:25,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:40:25,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:25,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-28 20:40:25,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:25,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-11-28 20:40:25,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:25,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-11-28 20:40:26,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:26,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-11-28 20:40:26,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:26,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-11-28 20:40:26,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:26,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-11-28 20:40:26,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:26,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2023-11-28 20:40:26,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:26,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2023-11-28 20:40:26,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:26,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2023-11-28 20:40:26,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:26,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2023-11-28 20:40:26,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:26,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2023-11-28 20:40:26,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:26,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2023-11-28 20:40:26,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:26,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2023-11-28 20:40:26,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:26,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2023-11-28 20:40:26,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:26,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2023-11-28 20:40:26,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:26,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2023-11-28 20:40:26,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:26,054 INFO L134 CoverageAnalysis]: Checked inductivity of 929 backedges. 22 proven. 25 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2023-11-28 20:40:26,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:40:26,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147027785] [2023-11-28 20:40:26,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147027785] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:40:26,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622278838] [2023-11-28 20:40:26,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:40:26,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:40:26,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:40:26,056 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:40:26,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-28 20:40:26,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:26,313 INFO L262 TraceCheckSpWp]: Trace formula consists of 1245 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-28 20:40:26,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:40:26,748 INFO L134 CoverageAnalysis]: Checked inductivity of 929 backedges. 258 proven. 89 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2023-11-28 20:40:26,748 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:40:27,299 INFO L134 CoverageAnalysis]: Checked inductivity of 929 backedges. 56 proven. 52 refuted. 0 times theorem prover too weak. 821 trivial. 0 not checked. [2023-11-28 20:40:27,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622278838] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:40:27,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 20:40:27,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 13, 13] total 40 [2023-11-28 20:40:27,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354247917] [2023-11-28 20:40:27,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 20:40:27,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-11-28 20:40:27,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:40:27,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-11-28 20:40:27,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1459, Unknown=0, NotChecked=0, Total=1560 [2023-11-28 20:40:27,302 INFO L87 Difference]: Start difference. First operand 7224 states and 9063 transitions. Second operand has 40 states, 40 states have (on average 6.475) internal successors, (259), 34 states have internal predecessors, (259), 9 states have call successors, (56), 9 states have call predecessors, (56), 14 states have return successors, (56), 14 states have call predecessors, (56), 9 states have call successors, (56) [2023-11-28 20:41:03,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:41:03,977 INFO L93 Difference]: Finished difference Result 69403 states and 90457 transitions. [2023-11-28 20:41:03,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 364 states. [2023-11-28 20:41:03,978 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 6.475) internal successors, (259), 34 states have internal predecessors, (259), 9 states have call successors, (56), 9 states have call predecessors, (56), 14 states have return successors, (56), 14 states have call predecessors, (56), 9 states have call successors, (56) Word has length 351 [2023-11-28 20:41:03,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:41:04,122 INFO L225 Difference]: With dead ends: 69403 [2023-11-28 20:41:04,122 INFO L226 Difference]: Without dead ends: 62840 [2023-11-28 20:41:04,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1195 GetRequests, 796 SyntacticMatches, 1 SemanticMatches, 398 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65204 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=10001, Invalid=149599, Unknown=0, NotChecked=0, Total=159600 [2023-11-28 20:41:04,147 INFO L413 NwaCegarLoop]: 1110 mSDtfsCounter, 5421 mSDsluCounter, 25751 mSDsCounter, 0 mSdLazyCounter, 22973 mSolverCounterSat, 1424 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5422 SdHoareTripleChecker+Valid, 26861 SdHoareTripleChecker+Invalid, 24397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1424 IncrementalHoareTripleChecker+Valid, 22973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2023-11-28 20:41:04,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5422 Valid, 26861 Invalid, 24397 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1424 Valid, 22973 Invalid, 0 Unknown, 0 Unchecked, 10.8s Time] [2023-11-28 20:41:04,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62840 states. [2023-11-28 20:41:08,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62840 to 20612. [2023-11-28 20:41:08,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20612 states, 16343 states have (on average 1.2273756348283669) internal successors, (20059), 16545 states have internal predecessors, (20059), 2996 states have call successors, (2996), 1272 states have call predecessors, (2996), 1272 states have return successors, (2996), 2794 states have call predecessors, (2996), 2996 states have call successors, (2996) [2023-11-28 20:41:08,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20612 states to 20612 states and 26051 transitions. [2023-11-28 20:41:08,486 INFO L78 Accepts]: Start accepts. Automaton has 20612 states and 26051 transitions. Word has length 351 [2023-11-28 20:41:08,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:41:08,486 INFO L495 AbstractCegarLoop]: Abstraction has 20612 states and 26051 transitions. [2023-11-28 20:41:08,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 6.475) internal successors, (259), 34 states have internal predecessors, (259), 9 states have call successors, (56), 9 states have call predecessors, (56), 14 states have return successors, (56), 14 states have call predecessors, (56), 9 states have call successors, (56) [2023-11-28 20:41:08,487 INFO L276 IsEmpty]: Start isEmpty. Operand 20612 states and 26051 transitions. [2023-11-28 20:41:08,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2023-11-28 20:41:08,529 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:41:08,530 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 7, 7, 7, 7, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:41:08,535 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-28 20:41:08,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2023-11-28 20:41:08,730 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:41:08,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:41:08,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1787904709, now seen corresponding path program 1 times [2023-11-28 20:41:08,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:41:08,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476352372] [2023-11-28 20:41:08,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:41:08,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:41:08,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:08,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:41:08,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:08,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:41:08,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:08,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:41:08,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:08,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:41:08,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:08,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:41:08,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:08,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:41:08,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:08,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:41:08,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:08,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:41:08,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:08,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:41:08,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:08,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:41:08,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:08,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:41:08,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:08,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:41:08,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:08,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 20:41:08,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:08,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:41:08,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:08,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:41:08,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:08,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-28 20:41:08,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:08,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-11-28 20:41:08,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:08,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-11-28 20:41:08,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:08,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-11-28 20:41:08,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:08,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-11-28 20:41:08,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:08,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2023-11-28 20:41:08,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:08,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2023-11-28 20:41:08,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:08,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2023-11-28 20:41:08,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:08,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2023-11-28 20:41:08,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:08,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2023-11-28 20:41:08,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:08,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2023-11-28 20:41:08,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:08,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2023-11-28 20:41:08,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:08,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2023-11-28 20:41:08,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:08,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2023-11-28 20:41:08,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:08,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2023-11-28 20:41:08,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:08,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2023-11-28 20:41:08,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:08,959 INFO L134 CoverageAnalysis]: Checked inductivity of 928 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 901 trivial. 0 not checked. [2023-11-28 20:41:08,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:41:08,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476352372] [2023-11-28 20:41:08,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476352372] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:41:08,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:41:08,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-28 20:41:08,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425923902] [2023-11-28 20:41:08,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:41:08,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-28 20:41:08,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:41:08,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-28 20:41:08,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-28 20:41:08,961 INFO L87 Difference]: Start difference. First operand 20612 states and 26051 transitions. Second operand has 10 states, 10 states have (on average 11.9) internal successors, (119), 8 states have internal predecessors, (119), 3 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) [2023-11-28 20:41:14,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:41:14,840 INFO L93 Difference]: Finished difference Result 42461 states and 54523 transitions. [2023-11-28 20:41:14,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-28 20:41:14,840 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.9) internal successors, (119), 8 states have internal predecessors, (119), 3 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) Word has length 351 [2023-11-28 20:41:14,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:41:14,888 INFO L225 Difference]: With dead ends: 42461 [2023-11-28 20:41:14,889 INFO L226 Difference]: Without dead ends: 24756 [2023-11-28 20:41:14,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=579, Unknown=0, NotChecked=0, Total=702 [2023-11-28 20:41:14,912 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 359 mSDsluCounter, 2011 mSDsCounter, 0 mSdLazyCounter, 2048 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 2393 SdHoareTripleChecker+Invalid, 2114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 2048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-28 20:41:14,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 2393 Invalid, 2114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 2048 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-28 20:41:15,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24756 states. [2023-11-28 20:41:17,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24756 to 10779. [2023-11-28 20:41:17,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10779 states, 8674 states have (on average 1.2151256629006226) internal successors, (10540), 8769 states have internal predecessors, (10540), 1452 states have call successors, (1452), 652 states have call predecessors, (1452), 652 states have return successors, (1452), 1357 states have call predecessors, (1452), 1452 states have call successors, (1452) [2023-11-28 20:41:17,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10779 states to 10779 states and 13444 transitions. [2023-11-28 20:41:17,338 INFO L78 Accepts]: Start accepts. Automaton has 10779 states and 13444 transitions. Word has length 351 [2023-11-28 20:41:17,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:41:17,339 INFO L495 AbstractCegarLoop]: Abstraction has 10779 states and 13444 transitions. [2023-11-28 20:41:17,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.9) internal successors, (119), 8 states have internal predecessors, (119), 3 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) [2023-11-28 20:41:17,339 INFO L276 IsEmpty]: Start isEmpty. Operand 10779 states and 13444 transitions. [2023-11-28 20:41:17,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2023-11-28 20:41:17,353 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:41:17,353 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 7, 7, 7, 7, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:41:17,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-11-28 20:41:17,353 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:41:17,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:41:17,353 INFO L85 PathProgramCache]: Analyzing trace with hash 73729596, now seen corresponding path program 1 times [2023-11-28 20:41:17,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:41:17,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040003033] [2023-11-28 20:41:17,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:41:17,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:41:17,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:17,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:41:17,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:17,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:41:17,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:17,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:41:17,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:17,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:41:17,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:17,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:41:17,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:17,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:41:17,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:17,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:41:17,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:17,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:41:17,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:17,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:41:17,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:17,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:41:17,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:17,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:41:17,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:17,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:41:17,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:17,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 20:41:17,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:17,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:41:17,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:17,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:41:17,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:17,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-28 20:41:17,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:17,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-11-28 20:41:17,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:17,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2023-11-28 20:41:17,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:17,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2023-11-28 20:41:17,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:17,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-11-28 20:41:17,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:17,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-11-28 20:41:17,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:17,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2023-11-28 20:41:17,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:17,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2023-11-28 20:41:17,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:17,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2023-11-28 20:41:17,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:17,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2023-11-28 20:41:17,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:17,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2023-11-28 20:41:17,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:17,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2023-11-28 20:41:17,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:17,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2023-11-28 20:41:17,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:17,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2023-11-28 20:41:17,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:17,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-11-28 20:41:17,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:17,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2023-11-28 20:41:17,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:17,592 INFO L134 CoverageAnalysis]: Checked inductivity of 932 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 925 trivial. 0 not checked. [2023-11-28 20:41:17,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:41:17,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040003033] [2023-11-28 20:41:17,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040003033] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:41:17,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:41:17,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:41:17,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440775868] [2023-11-28 20:41:17,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:41:17,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:41:17,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:41:17,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:41:17,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:41:17,594 INFO L87 Difference]: Start difference. First operand 10779 states and 13444 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-28 20:41:18,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:41:18,754 INFO L93 Difference]: Finished difference Result 14978 states and 18704 transitions. [2023-11-28 20:41:18,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:41:18,754 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 351 [2023-11-28 20:41:18,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:41:18,763 INFO L225 Difference]: With dead ends: 14978 [2023-11-28 20:41:18,763 INFO L226 Difference]: Without dead ends: 5071 [2023-11-28 20:41:18,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:41:18,772 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 58 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 20:41:18,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 452 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 20:41:18,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5071 states. [2023-11-28 20:41:19,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5071 to 5071. [2023-11-28 20:41:19,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5071 states, 4095 states have (on average 1.204151404151404) internal successors, (4931), 4141 states have internal predecessors, (4931), 669 states have call successors, (669), 306 states have call predecessors, (669), 306 states have return successors, (669), 623 states have call predecessors, (669), 669 states have call successors, (669) [2023-11-28 20:41:19,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5071 states to 5071 states and 6269 transitions. [2023-11-28 20:41:19,706 INFO L78 Accepts]: Start accepts. Automaton has 5071 states and 6269 transitions. Word has length 351 [2023-11-28 20:41:19,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:41:19,706 INFO L495 AbstractCegarLoop]: Abstraction has 5071 states and 6269 transitions. [2023-11-28 20:41:19,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-28 20:41:19,706 INFO L276 IsEmpty]: Start isEmpty. Operand 5071 states and 6269 transitions. [2023-11-28 20:41:19,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2023-11-28 20:41:19,712 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:41:19,712 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 7, 7, 7, 7, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:41:19,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-11-28 20:41:19,712 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:41:19,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:41:19,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1273018611, now seen corresponding path program 1 times [2023-11-28 20:41:19,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:41:19,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280488297] [2023-11-28 20:41:19,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:41:19,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:41:19,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:19,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:41:19,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:19,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:41:19,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:19,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:41:19,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:19,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:41:19,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:19,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:41:19,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:19,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:41:19,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:19,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:41:19,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:19,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:41:19,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:19,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:41:19,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:19,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:41:19,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:19,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:41:19,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:19,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:41:19,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:19,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 20:41:19,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:19,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:41:19,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:19,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:41:19,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:19,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-28 20:41:19,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:19,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-11-28 20:41:19,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:19,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-11-28 20:41:19,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:19,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2023-11-28 20:41:19,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:19,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2023-11-28 20:41:19,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:19,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2023-11-28 20:41:19,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:19,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2023-11-28 20:41:19,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:19,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2023-11-28 20:41:19,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:19,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2023-11-28 20:41:19,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:19,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2023-11-28 20:41:19,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:19,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2023-11-28 20:41:19,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:19,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2023-11-28 20:41:19,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:19,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2023-11-28 20:41:19,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:19,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2023-11-28 20:41:19,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:19,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2023-11-28 20:41:19,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:19,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2023-11-28 20:41:19,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:19,890 INFO L134 CoverageAnalysis]: Checked inductivity of 929 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 921 trivial. 0 not checked. [2023-11-28 20:41:19,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:41:19,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280488297] [2023-11-28 20:41:19,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280488297] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:41:19,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:41:19,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:41:19,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954222164] [2023-11-28 20:41:19,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:41:19,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:41:19,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:41:19,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:41:19,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:41:19,892 INFO L87 Difference]: Start difference. First operand 5071 states and 6269 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-28 20:41:20,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:41:20,805 INFO L93 Difference]: Finished difference Result 8202 states and 10145 transitions. [2023-11-28 20:41:20,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:41:20,805 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 352 [2023-11-28 20:41:20,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:41:20,811 INFO L225 Difference]: With dead ends: 8202 [2023-11-28 20:41:20,811 INFO L226 Difference]: Without dead ends: 3439 [2023-11-28 20:41:20,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:41:20,815 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 58 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 20:41:20,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 446 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 20:41:20,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3439 states. [2023-11-28 20:41:21,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3439 to 3439. [2023-11-28 20:41:21,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3439 states, 2776 states have (on average 1.1952449567723342) internal successors, (3318), 2807 states have internal predecessors, (3318), 449 states have call successors, (449), 213 states have call predecessors, (449), 213 states have return successors, (449), 418 states have call predecessors, (449), 449 states have call successors, (449) [2023-11-28 20:41:21,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3439 states to 3439 states and 4216 transitions. [2023-11-28 20:41:21,486 INFO L78 Accepts]: Start accepts. Automaton has 3439 states and 4216 transitions. Word has length 352 [2023-11-28 20:41:21,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:41:21,486 INFO L495 AbstractCegarLoop]: Abstraction has 3439 states and 4216 transitions. [2023-11-28 20:41:21,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-28 20:41:21,486 INFO L276 IsEmpty]: Start isEmpty. Operand 3439 states and 4216 transitions. [2023-11-28 20:41:21,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2023-11-28 20:41:21,490 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:41:21,491 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 10, 10, 10, 9, 8, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:41:21,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-11-28 20:41:21,491 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:41:21,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:41:21,491 INFO L85 PathProgramCache]: Analyzing trace with hash -532515220, now seen corresponding path program 1 times [2023-11-28 20:41:21,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:41:21,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188303443] [2023-11-28 20:41:21,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:41:21,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:41:21,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:21,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:41:21,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:21,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:41:21,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:21,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:41:21,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:21,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:41:21,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:21,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:41:21,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:21,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:41:21,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:21,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:41:21,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:21,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:41:21,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:21,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:41:21,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:21,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:41:21,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:21,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:41:21,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:21,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:41:21,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:21,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 20:41:21,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:21,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:41:21,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:21,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:41:21,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:21,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-28 20:41:21,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:21,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-11-28 20:41:21,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:21,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-11-28 20:41:21,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:21,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-11-28 20:41:21,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:21,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-11-28 20:41:21,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:21,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-11-28 20:41:21,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:21,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2023-11-28 20:41:21,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:21,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2023-11-28 20:41:21,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:21,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2023-11-28 20:41:21,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:21,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2023-11-28 20:41:21,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:21,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2023-11-28 20:41:21,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:21,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2023-11-28 20:41:21,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:21,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2023-11-28 20:41:21,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:21,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2023-11-28 20:41:21,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:21,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2023-11-28 20:41:21,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:21,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2023-11-28 20:41:21,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:21,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2023-11-28 20:41:21,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:21,702 INFO L134 CoverageAnalysis]: Checked inductivity of 944 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 908 trivial. 0 not checked. [2023-11-28 20:41:21,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:41:21,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188303443] [2023-11-28 20:41:21,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188303443] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:41:21,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:41:21,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-28 20:41:21,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853583338] [2023-11-28 20:41:21,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:41:21,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-28 20:41:21,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:41:21,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-28 20:41:21,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-28 20:41:21,705 INFO L87 Difference]: Start difference. First operand 3439 states and 4216 transitions. Second operand has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 7 states have internal predecessors, (118), 3 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-28 20:41:23,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:41:23,107 INFO L93 Difference]: Finished difference Result 6325 states and 7784 transitions. [2023-11-28 20:41:23,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-28 20:41:23,108 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 7 states have internal predecessors, (118), 3 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 356 [2023-11-28 20:41:23,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:41:23,113 INFO L225 Difference]: With dead ends: 6325 [2023-11-28 20:41:23,113 INFO L226 Difference]: Without dead ends: 3759 [2023-11-28 20:41:23,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-11-28 20:41:23,116 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 199 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 1314 SdHoareTripleChecker+Invalid, 970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-28 20:41:23,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 1314 Invalid, 970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 936 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-28 20:41:23,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3759 states. [2023-11-28 20:41:23,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3759 to 3445. [2023-11-28 20:41:23,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3445 states, 2782 states have (on average 1.194823867721064) internal successors, (3324), 2810 states have internal predecessors, (3324), 449 states have call successors, (449), 213 states have call predecessors, (449), 213 states have return successors, (449), 421 states have call predecessors, (449), 449 states have call successors, (449) [2023-11-28 20:41:23,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3445 states to 3445 states and 4222 transitions. [2023-11-28 20:41:23,842 INFO L78 Accepts]: Start accepts. Automaton has 3445 states and 4222 transitions. Word has length 356 [2023-11-28 20:41:23,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:41:23,843 INFO L495 AbstractCegarLoop]: Abstraction has 3445 states and 4222 transitions. [2023-11-28 20:41:23,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 7 states have internal predecessors, (118), 3 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-28 20:41:23,843 INFO L276 IsEmpty]: Start isEmpty. Operand 3445 states and 4222 transitions. [2023-11-28 20:41:23,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2023-11-28 20:41:23,846 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:41:23,847 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 10, 10, 10, 9, 8, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:41:23,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-11-28 20:41:23,847 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:41:23,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:41:23,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1249363977, now seen corresponding path program 1 times [2023-11-28 20:41:23,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:41:23,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242393755] [2023-11-28 20:41:23,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:41:23,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:41:23,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:24,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:41:24,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:24,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:41:24,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:24,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:41:24,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:24,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:41:24,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:24,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:41:24,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:24,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:41:24,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:24,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:41:24,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:24,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:41:24,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:24,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:41:24,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:24,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:41:24,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:24,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:41:24,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:24,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:41:24,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:24,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 20:41:24,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:24,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:41:24,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:24,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:41:24,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:24,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-28 20:41:24,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:24,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-11-28 20:41:24,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:24,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-11-28 20:41:24,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:24,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-11-28 20:41:24,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:24,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-11-28 20:41:24,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:24,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2023-11-28 20:41:24,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:24,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2023-11-28 20:41:24,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:24,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2023-11-28 20:41:24,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:24,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2023-11-28 20:41:24,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:24,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2023-11-28 20:41:24,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:24,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2023-11-28 20:41:24,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:24,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2023-11-28 20:41:24,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:24,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2023-11-28 20:41:24,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:24,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2023-11-28 20:41:24,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:24,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2023-11-28 20:41:24,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:24,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2023-11-28 20:41:24,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:24,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2023-11-28 20:41:24,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:24,157 INFO L134 CoverageAnalysis]: Checked inductivity of 943 backedges. 45 proven. 18 refuted. 0 times theorem prover too weak. 880 trivial. 0 not checked. [2023-11-28 20:41:24,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:41:24,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242393755] [2023-11-28 20:41:24,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242393755] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:41:24,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34440783] [2023-11-28 20:41:24,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:41:24,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:41:24,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:41:24,159 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:41:24,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-28 20:41:24,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:24,375 INFO L262 TraceCheckSpWp]: Trace formula consists of 1268 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-28 20:41:24,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:41:24,829 INFO L134 CoverageAnalysis]: Checked inductivity of 943 backedges. 127 proven. 203 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2023-11-28 20:41:24,830 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:41:25,103 INFO L134 CoverageAnalysis]: Checked inductivity of 943 backedges. 17 proven. 30 refuted. 0 times theorem prover too weak. 896 trivial. 0 not checked. [2023-11-28 20:41:25,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34440783] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:41:25,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 20:41:25,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 22 [2023-11-28 20:41:25,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075384884] [2023-11-28 20:41:25,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 20:41:25,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-28 20:41:25,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:41:25,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-28 20:41:25,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=408, Unknown=0, NotChecked=0, Total=462 [2023-11-28 20:41:25,106 INFO L87 Difference]: Start difference. First operand 3445 states and 4222 transitions. Second operand has 22 states, 22 states have (on average 11.636363636363637) internal successors, (256), 18 states have internal predecessors, (256), 8 states have call successors, (61), 7 states have call predecessors, (61), 10 states have return successors, (60), 11 states have call predecessors, (60), 8 states have call successors, (60) [2023-11-28 20:41:30,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:41:30,075 INFO L93 Difference]: Finished difference Result 13479 states and 16749 transitions. [2023-11-28 20:41:30,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-11-28 20:41:30,075 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 11.636363636363637) internal successors, (256), 18 states have internal predecessors, (256), 8 states have call successors, (61), 7 states have call predecessors, (61), 10 states have return successors, (60), 11 states have call predecessors, (60), 8 states have call successors, (60) Word has length 356 [2023-11-28 20:41:30,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:41:30,090 INFO L225 Difference]: With dead ends: 13479 [2023-11-28 20:41:30,090 INFO L226 Difference]: Without dead ends: 10862 [2023-11-28 20:41:30,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 853 GetRequests, 766 SyntacticMatches, 9 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1809 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=633, Invalid=5687, Unknown=0, NotChecked=0, Total=6320 [2023-11-28 20:41:30,094 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 1749 mSDsluCounter, 3435 mSDsCounter, 0 mSdLazyCounter, 3129 mSolverCounterSat, 354 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1765 SdHoareTripleChecker+Valid, 3709 SdHoareTripleChecker+Invalid, 3483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 354 IncrementalHoareTripleChecker+Valid, 3129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-28 20:41:30,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1765 Valid, 3709 Invalid, 3483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [354 Valid, 3129 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-28 20:41:30,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10862 states. [2023-11-28 20:41:31,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10862 to 5874. [2023-11-28 20:41:31,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5874 states, 4749 states have (on average 1.1937249947357338) internal successors, (5669), 4795 states have internal predecessors, (5669), 764 states have call successors, (764), 360 states have call predecessors, (764), 360 states have return successors, (764), 718 states have call predecessors, (764), 764 states have call successors, (764) [2023-11-28 20:41:31,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5874 states to 5874 states and 7197 transitions. [2023-11-28 20:41:31,412 INFO L78 Accepts]: Start accepts. Automaton has 5874 states and 7197 transitions. Word has length 356 [2023-11-28 20:41:31,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:41:31,413 INFO L495 AbstractCegarLoop]: Abstraction has 5874 states and 7197 transitions. [2023-11-28 20:41:31,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 11.636363636363637) internal successors, (256), 18 states have internal predecessors, (256), 8 states have call successors, (61), 7 states have call predecessors, (61), 10 states have return successors, (60), 11 states have call predecessors, (60), 8 states have call successors, (60) [2023-11-28 20:41:31,413 INFO L276 IsEmpty]: Start isEmpty. Operand 5874 states and 7197 transitions. [2023-11-28 20:41:31,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2023-11-28 20:41:31,417 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:41:31,417 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 8, 8, 8, 8, 7, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:41:31,422 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-28 20:41:31,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-11-28 20:41:31,618 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:41:31,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:41:31,618 INFO L85 PathProgramCache]: Analyzing trace with hash -839540350, now seen corresponding path program 1 times [2023-11-28 20:41:31,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:41:31,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190415315] [2023-11-28 20:41:31,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:41:31,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:41:31,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:31,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:41:31,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:31,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:41:31,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:31,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:41:31,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:31,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:41:31,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:31,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:41:31,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:31,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:41:31,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:31,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:41:31,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:31,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:41:31,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:31,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:41:31,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:31,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:41:31,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:31,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:41:31,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:31,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:41:31,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:31,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 20:41:31,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:31,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:41:31,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:31,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:41:31,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:31,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-28 20:41:31,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:31,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-11-28 20:41:31,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:31,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-11-28 20:41:31,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:31,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-11-28 20:41:31,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:31,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-11-28 20:41:31,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:31,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-11-28 20:41:31,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:31,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2023-11-28 20:41:31,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:31,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2023-11-28 20:41:31,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:31,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2023-11-28 20:41:31,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:31,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2023-11-28 20:41:31,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:31,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2023-11-28 20:41:31,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:31,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2023-11-28 20:41:31,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:31,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2023-11-28 20:41:31,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:31,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2023-11-28 20:41:31,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:31,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-11-28 20:41:31,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:31,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2023-11-28 20:41:31,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:31,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2023-11-28 20:41:31,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:31,832 INFO L134 CoverageAnalysis]: Checked inductivity of 969 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 942 trivial. 0 not checked. [2023-11-28 20:41:31,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:41:31,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190415315] [2023-11-28 20:41:31,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190415315] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:41:31,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465639487] [2023-11-28 20:41:31,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:41:31,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:41:31,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:41:31,833 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:41:31,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-28 20:41:32,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:32,032 INFO L262 TraceCheckSpWp]: Trace formula consists of 1276 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-28 20:41:32,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:41:32,095 INFO L134 CoverageAnalysis]: Checked inductivity of 969 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 723 trivial. 0 not checked. [2023-11-28 20:41:32,095 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:41:32,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465639487] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:41:32,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:41:32,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2023-11-28 20:41:32,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472084136] [2023-11-28 20:41:32,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:41:32,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-28 20:41:32,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:41:32,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-28 20:41:32,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-11-28 20:41:32,098 INFO L87 Difference]: Start difference. First operand 5874 states and 7197 transitions. Second operand has 9 states, 9 states have (on average 15.0) internal successors, (135), 8 states have internal predecessors, (135), 3 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-28 20:41:34,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:41:34,859 INFO L93 Difference]: Finished difference Result 13416 states and 16658 transitions. [2023-11-28 20:41:34,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-28 20:41:34,860 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.0) internal successors, (135), 8 states have internal predecessors, (135), 3 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) Word has length 360 [2023-11-28 20:41:34,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:41:34,878 INFO L225 Difference]: With dead ends: 13416 [2023-11-28 20:41:34,878 INFO L226 Difference]: Without dead ends: 8421 [2023-11-28 20:41:34,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 427 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2023-11-28 20:41:34,887 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 397 mSDsluCounter, 2395 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 2885 SdHoareTripleChecker+Invalid, 1061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-28 20:41:34,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 2885 Invalid, 1061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1022 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-28 20:41:34,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8421 states. [2023-11-28 20:41:36,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8421 to 5790. [2023-11-28 20:41:36,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5790 states, 4683 states have (on average 1.1836429639120223) internal successors, (5543), 4729 states have internal predecessors, (5543), 746 states have call successors, (746), 360 states have call predecessors, (746), 360 states have return successors, (746), 700 states have call predecessors, (746), 746 states have call successors, (746) [2023-11-28 20:41:36,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5790 states to 5790 states and 7035 transitions. [2023-11-28 20:41:36,199 INFO L78 Accepts]: Start accepts. Automaton has 5790 states and 7035 transitions. Word has length 360 [2023-11-28 20:41:36,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:41:36,200 INFO L495 AbstractCegarLoop]: Abstraction has 5790 states and 7035 transitions. [2023-11-28 20:41:36,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.0) internal successors, (135), 8 states have internal predecessors, (135), 3 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-28 20:41:36,200 INFO L276 IsEmpty]: Start isEmpty. Operand 5790 states and 7035 transitions. [2023-11-28 20:41:36,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2023-11-28 20:41:36,207 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:41:36,207 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 8, 8, 8, 8, 7, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:41:36,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-28 20:41:36,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2023-11-28 20:41:36,408 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:41:36,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:41:36,408 INFO L85 PathProgramCache]: Analyzing trace with hash -2001658971, now seen corresponding path program 1 times [2023-11-28 20:41:36,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:41:36,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723934939] [2023-11-28 20:41:36,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:41:36,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:41:36,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:36,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:41:36,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:36,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:41:36,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:36,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:41:36,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:36,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:41:36,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:36,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:41:36,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:36,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:41:36,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:36,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:41:36,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:36,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:41:36,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:36,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:41:36,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:36,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:41:36,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:36,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:41:36,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:36,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:41:36,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:36,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 20:41:36,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:36,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:41:36,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:36,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:41:36,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:36,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-28 20:41:36,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:36,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-11-28 20:41:36,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:36,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-11-28 20:41:36,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:36,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-11-28 20:41:36,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:36,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-11-28 20:41:36,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:36,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-11-28 20:41:36,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:36,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2023-11-28 20:41:36,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:36,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2023-11-28 20:41:36,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:36,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2023-11-28 20:41:36,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:36,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2023-11-28 20:41:36,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:36,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2023-11-28 20:41:36,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:36,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2023-11-28 20:41:36,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:36,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2023-11-28 20:41:36,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:36,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2023-11-28 20:41:36,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:36,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2023-11-28 20:41:36,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:36,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2023-11-28 20:41:36,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:36,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2023-11-28 20:41:36,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:36,993 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 26 proven. 64 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2023-11-28 20:41:36,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:41:36,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723934939] [2023-11-28 20:41:36,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723934939] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:41:36,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174452795] [2023-11-28 20:41:36,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:41:36,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:41:36,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:41:36,994 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:41:36,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-28 20:41:37,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:37,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 1279 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-28 20:41:37,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:41:37,417 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 303 proven. 72 refuted. 0 times theorem prover too weak. 591 trivial. 0 not checked. [2023-11-28 20:41:37,417 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:41:37,891 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 31 proven. 70 refuted. 0 times theorem prover too weak. 865 trivial. 0 not checked. [2023-11-28 20:41:37,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174452795] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:41:37,891 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 20:41:37,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 23 [2023-11-28 20:41:37,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271110384] [2023-11-28 20:41:37,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 20:41:37,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-28 20:41:37,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:41:37,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-28 20:41:37,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2023-11-28 20:41:37,893 INFO L87 Difference]: Start difference. First operand 5790 states and 7035 transitions. Second operand has 23 states, 23 states have (on average 9.173913043478262) internal successors, (211), 19 states have internal predecessors, (211), 5 states have call successors, (46), 9 states have call predecessors, (46), 14 states have return successors, (43), 8 states have call predecessors, (43), 5 states have call successors, (43) [2023-11-28 20:41:41,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:41:41,914 INFO L93 Difference]: Finished difference Result 11196 states and 13560 transitions. [2023-11-28 20:41:41,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-11-28 20:41:41,915 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 9.173913043478262) internal successors, (211), 19 states have internal predecessors, (211), 5 states have call successors, (46), 9 states have call predecessors, (46), 14 states have return successors, (43), 8 states have call predecessors, (43), 5 states have call successors, (43) Word has length 362 [2023-11-28 20:41:41,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:41:41,924 INFO L225 Difference]: With dead ends: 11196 [2023-11-28 20:41:41,924 INFO L226 Difference]: Without dead ends: 6084 [2023-11-28 20:41:41,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 841 GetRequests, 774 SyntacticMatches, 10 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=616, Invalid=2806, Unknown=0, NotChecked=0, Total=3422 [2023-11-28 20:41:41,930 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 1361 mSDsluCounter, 3503 mSDsCounter, 0 mSdLazyCounter, 2477 mSolverCounterSat, 474 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1378 SdHoareTripleChecker+Valid, 3898 SdHoareTripleChecker+Invalid, 2951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 474 IncrementalHoareTripleChecker+Valid, 2477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-28 20:41:41,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1378 Valid, 3898 Invalid, 2951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [474 Valid, 2477 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-28 20:41:41,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6084 states. [2023-11-28 20:41:43,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6084 to 4698. [2023-11-28 20:41:43,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4698 states, 3810 states have (on average 1.1826771653543307) internal successors, (4506), 3850 states have internal predecessors, (4506), 581 states have call successors, (581), 306 states have call predecessors, (581), 306 states have return successors, (581), 541 states have call predecessors, (581), 581 states have call successors, (581) [2023-11-28 20:41:43,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4698 states to 4698 states and 5668 transitions. [2023-11-28 20:41:43,112 INFO L78 Accepts]: Start accepts. Automaton has 4698 states and 5668 transitions. Word has length 362 [2023-11-28 20:41:43,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:41:43,113 INFO L495 AbstractCegarLoop]: Abstraction has 4698 states and 5668 transitions. [2023-11-28 20:41:43,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 9.173913043478262) internal successors, (211), 19 states have internal predecessors, (211), 5 states have call successors, (46), 9 states have call predecessors, (46), 14 states have return successors, (43), 8 states have call predecessors, (43), 5 states have call successors, (43) [2023-11-28 20:41:43,113 INFO L276 IsEmpty]: Start isEmpty. Operand 4698 states and 5668 transitions. [2023-11-28 20:41:43,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2023-11-28 20:41:43,116 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:41:43,117 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 8, 8, 8, 8, 7, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:41:43,122 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-28 20:41:43,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:41:43,317 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:41:43,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:41:43,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1688213804, now seen corresponding path program 1 times [2023-11-28 20:41:43,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:41:43,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826431272] [2023-11-28 20:41:43,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:41:43,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:41:43,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:43,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:41:43,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:43,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:41:43,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:43,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:41:43,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:43,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:41:43,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:43,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:41:43,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:43,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:41:43,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:43,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:41:43,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:43,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:41:43,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:43,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:41:43,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:43,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:41:43,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:43,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:41:43,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:43,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:41:43,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:43,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 20:41:43,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:43,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:41:43,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:43,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:41:43,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:43,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-28 20:41:43,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:43,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-11-28 20:41:43,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:43,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-11-28 20:41:43,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:43,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-11-28 20:41:43,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:43,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-11-28 20:41:43,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:43,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-11-28 20:41:43,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:43,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2023-11-28 20:41:43,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:43,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2023-11-28 20:41:43,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:43,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2023-11-28 20:41:43,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:43,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2023-11-28 20:41:43,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:43,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2023-11-28 20:41:43,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:43,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2023-11-28 20:41:43,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:43,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2023-11-28 20:41:43,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:43,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2023-11-28 20:41:43,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:43,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2023-11-28 20:41:43,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:43,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2023-11-28 20:41:43,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:43,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2023-11-28 20:41:43,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:43,533 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 942 trivial. 0 not checked. [2023-11-28 20:41:43,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:41:43,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826431272] [2023-11-28 20:41:43,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826431272] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:41:43,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:41:43,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-28 20:41:43,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401749332] [2023-11-28 20:41:43,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:41:43,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-28 20:41:43,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:41:43,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-28 20:41:43,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-28 20:41:43,535 INFO L87 Difference]: Start difference. First operand 4698 states and 5668 transitions. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 8 states have internal predecessors, (120), 3 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-28 20:41:47,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:41:47,208 INFO L93 Difference]: Finished difference Result 11674 states and 14267 transitions. [2023-11-28 20:41:47,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-28 20:41:47,208 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 8 states have internal predecessors, (120), 3 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 362 [2023-11-28 20:41:47,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:41:47,220 INFO L225 Difference]: With dead ends: 11674 [2023-11-28 20:41:47,220 INFO L226 Difference]: Without dead ends: 7735 [2023-11-28 20:41:47,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=127, Invalid=629, Unknown=0, NotChecked=0, Total=756 [2023-11-28 20:41:47,225 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 402 mSDsluCounter, 2185 mSDsCounter, 0 mSdLazyCounter, 1931 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 2607 SdHoareTripleChecker+Invalid, 1991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-28 20:41:47,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 2607 Invalid, 1991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1931 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-28 20:41:47,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7735 states. [2023-11-28 20:41:48,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7735 to 4182. [2023-11-28 20:41:48,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4182 states, 3396 states have (on average 1.1769729093050647) internal successors, (3997), 3430 states have internal predecessors, (3997), 509 states have call successors, (509), 276 states have call predecessors, (509), 276 states have return successors, (509), 475 states have call predecessors, (509), 509 states have call successors, (509) [2023-11-28 20:41:48,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4182 states to 4182 states and 5015 transitions. [2023-11-28 20:41:48,350 INFO L78 Accepts]: Start accepts. Automaton has 4182 states and 5015 transitions. Word has length 362 [2023-11-28 20:41:48,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:41:48,351 INFO L495 AbstractCegarLoop]: Abstraction has 4182 states and 5015 transitions. [2023-11-28 20:41:48,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 8 states have internal predecessors, (120), 3 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-28 20:41:48,351 INFO L276 IsEmpty]: Start isEmpty. Operand 4182 states and 5015 transitions. [2023-11-28 20:41:48,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2023-11-28 20:41:48,356 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:41:48,356 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 12, 12, 9, 8, 7, 7, 7, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:41:48,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2023-11-28 20:41:48,356 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:41:48,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:41:48,357 INFO L85 PathProgramCache]: Analyzing trace with hash 961791557, now seen corresponding path program 1 times [2023-11-28 20:41:48,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:41:48,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340420009] [2023-11-28 20:41:48,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:41:48,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:41:48,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:48,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:41:48,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:48,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:41:48,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:48,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:41:48,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:48,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:41:48,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:48,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:41:48,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:48,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:41:48,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:48,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:41:48,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:48,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:41:48,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:48,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:41:48,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:48,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:41:48,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:48,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:41:48,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:48,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:41:48,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:48,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 20:41:48,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:48,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:41:48,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:48,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:41:48,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:48,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-28 20:41:48,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:48,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-11-28 20:41:48,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:48,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-11-28 20:41:48,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:48,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-11-28 20:41:48,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:48,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2023-11-28 20:41:48,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:48,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2023-11-28 20:41:48,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:48,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2023-11-28 20:41:48,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:48,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2023-11-28 20:41:48,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:48,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2023-11-28 20:41:48,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:48,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2023-11-28 20:41:48,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:48,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2023-11-28 20:41:48,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:48,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2023-11-28 20:41:48,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:48,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2023-11-28 20:41:48,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:48,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2023-11-28 20:41:48,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:48,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2023-11-28 20:41:48,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:48,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2023-11-28 20:41:48,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:48,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2023-11-28 20:41:48,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:48,996 INFO L134 CoverageAnalysis]: Checked inductivity of 994 backedges. 22 proven. 25 refuted. 0 times theorem prover too weak. 947 trivial. 0 not checked. [2023-11-28 20:41:48,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:41:48,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340420009] [2023-11-28 20:41:48,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340420009] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:41:48,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060640492] [2023-11-28 20:41:48,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:41:48,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:41:48,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:41:48,997 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:41:48,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-28 20:41:49,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:41:49,194 INFO L262 TraceCheckSpWp]: Trace formula consists of 1271 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-28 20:41:49,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:41:49,703 INFO L134 CoverageAnalysis]: Checked inductivity of 994 backedges. 371 proven. 118 refuted. 0 times theorem prover too weak. 505 trivial. 0 not checked. [2023-11-28 20:41:49,703 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:41:50,415 INFO L134 CoverageAnalysis]: Checked inductivity of 994 backedges. 42 proven. 208 refuted. 0 times theorem prover too weak. 744 trivial. 0 not checked. [2023-11-28 20:41:50,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060640492] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:41:50,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 20:41:50,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 14, 18] total 46 [2023-11-28 20:41:50,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287194629] [2023-11-28 20:41:50,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 20:41:50,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-28 20:41:50,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:41:50,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-28 20:41:50,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1953, Unknown=0, NotChecked=0, Total=2070 [2023-11-28 20:41:50,419 INFO L87 Difference]: Start difference. First operand 4182 states and 5015 transitions. Second operand has 46 states, 45 states have (on average 6.7555555555555555) internal successors, (304), 39 states have internal predecessors, (304), 12 states have call successors, (66), 10 states have call predecessors, (66), 12 states have return successors, (67), 16 states have call predecessors, (67), 11 states have call successors, (67) [2023-11-28 20:42:07,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:42:07,947 INFO L93 Difference]: Finished difference Result 17718 states and 22130 transitions. [2023-11-28 20:42:07,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2023-11-28 20:42:07,948 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 6.7555555555555555) internal successors, (304), 39 states have internal predecessors, (304), 12 states have call successors, (66), 10 states have call predecessors, (66), 12 states have return successors, (67), 16 states have call predecessors, (67), 11 states have call successors, (67) Word has length 363 [2023-11-28 20:42:07,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:42:07,971 INFO L225 Difference]: With dead ends: 17718 [2023-11-28 20:42:07,971 INFO L226 Difference]: Without dead ends: 13985 [2023-11-28 20:42:07,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1017 GetRequests, 781 SyntacticMatches, 0 SemanticMatches, 236 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19121 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=3058, Invalid=53348, Unknown=0, NotChecked=0, Total=56406 [2023-11-28 20:42:07,978 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 2817 mSDsluCounter, 12551 mSDsCounter, 0 mSdLazyCounter, 12610 mSolverCounterSat, 885 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2831 SdHoareTripleChecker+Valid, 12998 SdHoareTripleChecker+Invalid, 13495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 885 IncrementalHoareTripleChecker+Valid, 12610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-11-28 20:42:07,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2831 Valid, 12998 Invalid, 13495 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [885 Valid, 12610 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-11-28 20:42:07,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13985 states. [2023-11-28 20:42:09,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13985 to 4499. [2023-11-28 20:42:09,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4499 states, 3669 states have (on average 1.1714363586808394) internal successors, (4298), 3703 states have internal predecessors, (4298), 533 states have call successors, (533), 294 states have call predecessors, (533), 296 states have return successors, (537), 501 states have call predecessors, (537), 533 states have call successors, (537) [2023-11-28 20:42:09,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4499 states to 4499 states and 5368 transitions. [2023-11-28 20:42:09,271 INFO L78 Accepts]: Start accepts. Automaton has 4499 states and 5368 transitions. Word has length 363 [2023-11-28 20:42:09,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:42:09,271 INFO L495 AbstractCegarLoop]: Abstraction has 4499 states and 5368 transitions. [2023-11-28 20:42:09,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 6.7555555555555555) internal successors, (304), 39 states have internal predecessors, (304), 12 states have call successors, (66), 10 states have call predecessors, (66), 12 states have return successors, (67), 16 states have call predecessors, (67), 11 states have call successors, (67) [2023-11-28 20:42:09,271 INFO L276 IsEmpty]: Start isEmpty. Operand 4499 states and 5368 transitions. [2023-11-28 20:42:09,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2023-11-28 20:42:09,276 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:42:09,276 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 9, 9, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:42:09,282 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-28 20:42:09,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:42:09,476 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:42:09,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:42:09,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1377644083, now seen corresponding path program 1 times [2023-11-28 20:42:09,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:42:09,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863396902] [2023-11-28 20:42:09,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:42:09,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:42:09,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:09,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:42:09,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:09,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:42:09,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:09,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-28 20:42:09,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:09,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-28 20:42:09,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:09,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-28 20:42:09,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:09,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:42:09,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:09,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:42:09,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:09,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:42:09,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:09,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-28 20:42:09,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:09,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:42:09,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:09,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:42:09,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:09,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:42:09,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:09,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-11-28 20:42:09,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:09,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:42:09,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:09,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:42:09,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:09,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-28 20:42:09,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:09,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-11-28 20:42:09,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:09,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-11-28 20:42:09,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:09,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2023-11-28 20:42:09,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:09,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2023-11-28 20:42:09,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:09,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2023-11-28 20:42:09,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:09,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2023-11-28 20:42:09,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:09,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2023-11-28 20:42:09,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:09,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2023-11-28 20:42:09,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:09,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2023-11-28 20:42:09,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:09,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2023-11-28 20:42:09,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:09,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2023-11-28 20:42:09,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:09,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2023-11-28 20:42:09,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:09,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2023-11-28 20:42:09,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:09,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2023-11-28 20:42:09,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:09,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2023-11-28 20:42:09,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:09,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2023-11-28 20:42:09,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:09,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2023-11-28 20:42:09,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:09,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1002 backedges. 9 proven. 128 refuted. 0 times theorem prover too weak. 865 trivial. 0 not checked. [2023-11-28 20:42:09,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:42:09,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863396902] [2023-11-28 20:42:09,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863396902] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:42:09,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032350292] [2023-11-28 20:42:09,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:42:09,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:42:09,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:42:09,620 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:42:09,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-28 20:42:09,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:09,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 1292 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-28 20:42:09,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:42:09,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1002 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 923 trivial. 0 not checked. [2023-11-28 20:42:09,816 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:42:09,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032350292] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:42:09,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:42:09,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-11-28 20:42:09,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927204373] [2023-11-28 20:42:09,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:42:09,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:42:09,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:42:09,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:42:09,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:42:09,818 INFO L87 Difference]: Start difference. First operand 4499 states and 5368 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-28 20:42:11,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:42:11,040 INFO L93 Difference]: Finished difference Result 8683 states and 10385 transitions. [2023-11-28 20:42:11,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:42:11,040 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 367 [2023-11-28 20:42:11,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:42:11,045 INFO L225 Difference]: With dead ends: 8683 [2023-11-28 20:42:11,046 INFO L226 Difference]: Without dead ends: 4184 [2023-11-28 20:42:11,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 433 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-28 20:42:11,049 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 28 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:42:11,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 619 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:42:11,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4184 states. [2023-11-28 20:42:12,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4184 to 4184. [2023-11-28 20:42:12,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4184 states, 3397 states have (on average 1.1748601707388873) internal successors, (3991), 3431 states have internal predecessors, (3991), 509 states have call successors, (509), 277 states have call predecessors, (509), 277 states have return successors, (509), 475 states have call predecessors, (509), 509 states have call successors, (509) [2023-11-28 20:42:12,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4184 states to 4184 states and 5009 transitions. [2023-11-28 20:42:12,180 INFO L78 Accepts]: Start accepts. Automaton has 4184 states and 5009 transitions. Word has length 367 [2023-11-28 20:42:12,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:42:12,180 INFO L495 AbstractCegarLoop]: Abstraction has 4184 states and 5009 transitions. [2023-11-28 20:42:12,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-28 20:42:12,180 INFO L276 IsEmpty]: Start isEmpty. Operand 4184 states and 5009 transitions. [2023-11-28 20:42:12,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2023-11-28 20:42:12,184 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:42:12,184 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 9, 9, 7, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:42:12,189 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-28 20:42:12,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:42:12,385 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:42:12,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:42:12,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1837910402, now seen corresponding path program 1 times [2023-11-28 20:42:12,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:42:12,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562498627] [2023-11-28 20:42:12,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:42:12,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:42:12,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:12,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:42:12,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:12,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:42:12,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:12,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:42:12,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:12,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:42:12,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:12,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:42:12,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:12,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:42:12,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:12,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:42:12,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:12,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:42:12,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:12,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:42:12,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:12,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:42:12,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:12,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:42:12,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:12,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:42:12,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:12,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 20:42:12,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:12,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:42:12,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:12,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:42:12,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:12,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-28 20:42:12,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:12,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-11-28 20:42:12,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:12,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-11-28 20:42:12,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:12,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-11-28 20:42:12,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:12,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-11-28 20:42:12,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:12,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2023-11-28 20:42:12,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:12,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2023-11-28 20:42:12,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:12,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2023-11-28 20:42:12,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:12,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2023-11-28 20:42:12,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:12,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2023-11-28 20:42:12,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:12,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2023-11-28 20:42:12,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:12,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2023-11-28 20:42:12,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:12,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2023-11-28 20:42:12,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:12,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2023-11-28 20:42:12,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:12,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-11-28 20:42:12,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:12,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2023-11-28 20:42:12,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:12,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2023-11-28 20:42:12,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:12,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2023-11-28 20:42:12,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:12,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2023-11-28 20:42:12,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:12,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1046 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 1008 trivial. 0 not checked. [2023-11-28 20:42:12,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:42:12,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562498627] [2023-11-28 20:42:12,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562498627] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:42:12,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135626138] [2023-11-28 20:42:12,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:42:12,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:42:12,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:42:12,607 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:42:12,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-28 20:42:12,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:12,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 1317 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-28 20:42:12,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:42:12,888 INFO L134 CoverageAnalysis]: Checked inductivity of 1046 backedges. 255 proven. 0 refuted. 0 times theorem prover too weak. 791 trivial. 0 not checked. [2023-11-28 20:42:12,888 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:42:12,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135626138] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:42:12,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:42:12,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 11 [2023-11-28 20:42:12,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17912600] [2023-11-28 20:42:12,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:42:12,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-28 20:42:12,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:42:12,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-28 20:42:12,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-28 20:42:12,890 INFO L87 Difference]: Start difference. First operand 4184 states and 5009 transitions. Second operand has 9 states, 9 states have (on average 15.555555555555555) internal successors, (140), 7 states have internal predecessors, (140), 3 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (23), 5 states have call predecessors, (23), 3 states have call successors, (23) [2023-11-28 20:42:14,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:42:14,526 INFO L93 Difference]: Finished difference Result 8179 states and 9826 transitions. [2023-11-28 20:42:14,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-28 20:42:14,527 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.555555555555555) internal successors, (140), 7 states have internal predecessors, (140), 3 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (23), 5 states have call predecessors, (23), 3 states have call successors, (23) Word has length 374 [2023-11-28 20:42:14,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:42:14,534 INFO L225 Difference]: With dead ends: 8179 [2023-11-28 20:42:14,534 INFO L226 Difference]: Without dead ends: 4756 [2023-11-28 20:42:14,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 441 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2023-11-28 20:42:14,538 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 106 mSDsluCounter, 1884 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 2249 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 20:42:14,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 2249 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 20:42:14,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4756 states. [2023-11-28 20:42:15,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4756 to 4157. [2023-11-28 20:42:15,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4157 states, 3379 states have (on average 1.1722403077833679) internal successors, (3961), 3413 states have internal predecessors, (3961), 500 states have call successors, (500), 277 states have call predecessors, (500), 277 states have return successors, (500), 466 states have call predecessors, (500), 500 states have call successors, (500) [2023-11-28 20:42:15,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4157 states to 4157 states and 4961 transitions. [2023-11-28 20:42:15,663 INFO L78 Accepts]: Start accepts. Automaton has 4157 states and 4961 transitions. Word has length 374 [2023-11-28 20:42:15,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:42:15,664 INFO L495 AbstractCegarLoop]: Abstraction has 4157 states and 4961 transitions. [2023-11-28 20:42:15,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.555555555555555) internal successors, (140), 7 states have internal predecessors, (140), 3 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (23), 5 states have call predecessors, (23), 3 states have call successors, (23) [2023-11-28 20:42:15,664 INFO L276 IsEmpty]: Start isEmpty. Operand 4157 states and 4961 transitions. [2023-11-28 20:42:15,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2023-11-28 20:42:15,668 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:42:15,668 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 12, 12, 9, 9, 8, 8, 8, 7, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:42:15,675 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-28 20:42:15,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:42:15,868 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:42:15,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:42:15,869 INFO L85 PathProgramCache]: Analyzing trace with hash -905848209, now seen corresponding path program 1 times [2023-11-28 20:42:15,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:42:15,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847969403] [2023-11-28 20:42:15,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:42:15,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:42:15,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:15,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:42:15,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:15,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:42:15,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:15,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:42:15,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:15,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:42:15,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:15,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:42:15,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:15,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:42:15,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:15,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:42:15,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:15,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:42:15,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:15,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:42:15,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:15,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:42:15,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:15,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:42:15,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:15,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:42:15,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:15,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 20:42:15,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:15,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:42:15,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:15,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:42:15,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:15,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-28 20:42:15,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:15,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-11-28 20:42:15,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:15,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-11-28 20:42:15,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:15,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-11-28 20:42:15,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:15,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-11-28 20:42:15,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:15,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-11-28 20:42:15,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:15,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2023-11-28 20:42:15,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:15,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2023-11-28 20:42:15,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:15,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2023-11-28 20:42:15,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:15,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2023-11-28 20:42:15,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:15,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2023-11-28 20:42:15,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:15,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2023-11-28 20:42:15,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:15,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2023-11-28 20:42:15,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:15,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2023-11-28 20:42:15,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:15,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2023-11-28 20:42:15,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:15,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2023-11-28 20:42:15,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:15,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2023-11-28 20:42:15,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:15,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2023-11-28 20:42:15,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:15,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1036 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1021 trivial. 0 not checked. [2023-11-28 20:42:15,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:42:15,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847969403] [2023-11-28 20:42:15,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847969403] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:42:15,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:42:15,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:42:15,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942343152] [2023-11-28 20:42:15,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:42:15,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:42:15,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:42:15,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:42:15,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:42:15,990 INFO L87 Difference]: Start difference. First operand 4157 states and 4961 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-28 20:42:17,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:42:17,876 INFO L93 Difference]: Finished difference Result 8506 states and 10145 transitions. [2023-11-28 20:42:17,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:42:17,876 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 373 [2023-11-28 20:42:17,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:42:17,883 INFO L225 Difference]: With dead ends: 8506 [2023-11-28 20:42:17,884 INFO L226 Difference]: Without dead ends: 5110 [2023-11-28 20:42:17,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:42:17,888 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 173 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-28 20:42:17,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 573 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-28 20:42:17,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5110 states. [2023-11-28 20:42:19,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5110 to 4133. [2023-11-28 20:42:19,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4133 states, 3355 states have (on average 1.1627421758569298) internal successors, (3901), 3389 states have internal predecessors, (3901), 500 states have call successors, (500), 277 states have call predecessors, (500), 277 states have return successors, (500), 466 states have call predecessors, (500), 500 states have call successors, (500) [2023-11-28 20:42:19,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4133 states to 4133 states and 4901 transitions. [2023-11-28 20:42:19,061 INFO L78 Accepts]: Start accepts. Automaton has 4133 states and 4901 transitions. Word has length 373 [2023-11-28 20:42:19,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:42:19,061 INFO L495 AbstractCegarLoop]: Abstraction has 4133 states and 4901 transitions. [2023-11-28 20:42:19,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-28 20:42:19,062 INFO L276 IsEmpty]: Start isEmpty. Operand 4133 states and 4901 transitions. [2023-11-28 20:42:19,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2023-11-28 20:42:19,065 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:42:19,065 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 12, 12, 9, 9, 7, 7, 7, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:42:19,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2023-11-28 20:42:19,066 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:42:19,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:42:19,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1773431246, now seen corresponding path program 1 times [2023-11-28 20:42:19,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:42:19,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917645567] [2023-11-28 20:42:19,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:42:19,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:42:19,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:19,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:42:19,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:19,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:42:19,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:19,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:42:19,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:19,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:42:19,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:19,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:42:19,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:19,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:42:19,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:19,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:42:19,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:19,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:42:19,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:19,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:42:19,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:19,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:42:19,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:19,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:42:19,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:19,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:42:19,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:19,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 20:42:19,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:19,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:42:19,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:19,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:42:19,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:19,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-28 20:42:19,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:19,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-11-28 20:42:19,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:19,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-11-28 20:42:19,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:19,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-11-28 20:42:19,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:19,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2023-11-28 20:42:19,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:19,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2023-11-28 20:42:19,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:19,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2023-11-28 20:42:19,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:19,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2023-11-28 20:42:19,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:19,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2023-11-28 20:42:19,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:19,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2023-11-28 20:42:19,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:19,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2023-11-28 20:42:19,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:19,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2023-11-28 20:42:19,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:19,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2023-11-28 20:42:19,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:19,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2023-11-28 20:42:19,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:19,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2023-11-28 20:42:19,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:19,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2023-11-28 20:42:19,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:19,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2023-11-28 20:42:19,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:19,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2023-11-28 20:42:19,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:19,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1063 backedges. 22 proven. 25 refuted. 0 times theorem prover too weak. 1016 trivial. 0 not checked. [2023-11-28 20:42:19,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:42:19,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917645567] [2023-11-28 20:42:19,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917645567] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:42:19,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287951833] [2023-11-28 20:42:19,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:42:19,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:42:19,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:42:19,710 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:42:19,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-28 20:42:19,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:19,922 INFO L262 TraceCheckSpWp]: Trace formula consists of 1297 conjuncts, 68 conjunts are in the unsatisfiable core [2023-11-28 20:42:19,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:42:21,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1063 backedges. 524 proven. 227 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-11-28 20:42:21,280 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:42:22,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1063 backedges. 101 proven. 200 refuted. 0 times theorem prover too weak. 762 trivial. 0 not checked. [2023-11-28 20:42:22,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287951833] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:42:22,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 20:42:22,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 27, 22] total 64 [2023-11-28 20:42:22,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371641482] [2023-11-28 20:42:22,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 20:42:22,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-11-28 20:42:22,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:42:22,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-11-28 20:42:22,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=3790, Unknown=0, NotChecked=0, Total=4032 [2023-11-28 20:42:22,634 INFO L87 Difference]: Start difference. First operand 4133 states and 4901 transitions. Second operand has 64 states, 64 states have (on average 6.015625) internal successors, (385), 55 states have internal predecessors, (385), 18 states have call successors, (69), 13 states have call predecessors, (69), 19 states have return successors, (73), 25 states have call predecessors, (73), 18 states have call successors, (73) [2023-11-28 20:42:40,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:42:40,600 INFO L93 Difference]: Finished difference Result 14501 states and 17525 transitions. [2023-11-28 20:42:40,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2023-11-28 20:42:40,601 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 6.015625) internal successors, (385), 55 states have internal predecessors, (385), 18 states have call successors, (69), 13 states have call predecessors, (69), 19 states have return successors, (73), 25 states have call predecessors, (73), 18 states have call successors, (73) Word has length 374 [2023-11-28 20:42:40,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:42:40,616 INFO L225 Difference]: With dead ends: 14501 [2023-11-28 20:42:40,616 INFO L226 Difference]: Without dead ends: 10819 [2023-11-28 20:42:40,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 994 GetRequests, 787 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12330 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=2760, Invalid=40712, Unknown=0, NotChecked=0, Total=43472 [2023-11-28 20:42:40,623 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 2217 mSDsluCounter, 15824 mSDsCounter, 0 mSdLazyCounter, 16330 mSolverCounterSat, 689 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2227 SdHoareTripleChecker+Valid, 16283 SdHoareTripleChecker+Invalid, 17019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 689 IncrementalHoareTripleChecker+Valid, 16330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2023-11-28 20:42:40,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2227 Valid, 16283 Invalid, 17019 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [689 Valid, 16330 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2023-11-28 20:42:40,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10819 states. [2023-11-28 20:42:41,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10819 to 4139. [2023-11-28 20:42:41,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4139 states, 3360 states have (on average 1.161309523809524) internal successors, (3902), 3394 states have internal predecessors, (3902), 500 states have call successors, (500), 278 states have call predecessors, (500), 278 states have return successors, (500), 466 states have call predecessors, (500), 500 states have call successors, (500) [2023-11-28 20:42:41,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4139 states to 4139 states and 4902 transitions. [2023-11-28 20:42:41,892 INFO L78 Accepts]: Start accepts. Automaton has 4139 states and 4902 transitions. Word has length 374 [2023-11-28 20:42:41,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:42:41,893 INFO L495 AbstractCegarLoop]: Abstraction has 4139 states and 4902 transitions. [2023-11-28 20:42:41,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 6.015625) internal successors, (385), 55 states have internal predecessors, (385), 18 states have call successors, (69), 13 states have call predecessors, (69), 19 states have return successors, (73), 25 states have call predecessors, (73), 18 states have call successors, (73) [2023-11-28 20:42:41,893 INFO L276 IsEmpty]: Start isEmpty. Operand 4139 states and 4902 transitions. [2023-11-28 20:42:41,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2023-11-28 20:42:41,896 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:42:41,897 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 12, 10, 9, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:42:41,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-28 20:42:42,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2023-11-28 20:42:42,097 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:42:42,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:42:42,098 INFO L85 PathProgramCache]: Analyzing trace with hash 892834989, now seen corresponding path program 1 times [2023-11-28 20:42:42,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:42:42,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189696952] [2023-11-28 20:42:42,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:42:42,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:42:42,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:42,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:42:42,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:42,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:42:42,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:42,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:42:42,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:42,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:42:42,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:42,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:42:42,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:42,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:42:42,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:42,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:42:42,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:42,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:42:42,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:42,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:42:42,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:42,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:42:42,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:42,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:42:42,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:42,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:42:42,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:42,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 20:42:42,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:42,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:42:42,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:42,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:42:42,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:42,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-28 20:42:42,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:42,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-11-28 20:42:42,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:42,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-11-28 20:42:42,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:42,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-11-28 20:42:42,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:42,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2023-11-28 20:42:42,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:42,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2023-11-28 20:42:42,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:42,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2023-11-28 20:42:42,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:42,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2023-11-28 20:42:42,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:42,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2023-11-28 20:42:42,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:42,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2023-11-28 20:42:42,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:42,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2023-11-28 20:42:42,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:42,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2023-11-28 20:42:42,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:42,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2023-11-28 20:42:42,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:42,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2023-11-28 20:42:42,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:42,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2023-11-28 20:42:42,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:42,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2023-11-28 20:42:42,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:42,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2023-11-28 20:42:42,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:42,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2023-11-28 20:42:42,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:42,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2023-11-28 20:42:42,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:42,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1141 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 1130 trivial. 0 not checked. [2023-11-28 20:42:42,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:42:42,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189696952] [2023-11-28 20:42:42,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189696952] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:42:42,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:42:42,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:42:42,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254083804] [2023-11-28 20:42:42,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:42:42,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:42:42,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:42:42,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:42:42,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:42:42,294 INFO L87 Difference]: Start difference. First operand 4139 states and 4902 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-11-28 20:42:43,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:42:43,654 INFO L93 Difference]: Finished difference Result 7817 states and 9278 transitions. [2023-11-28 20:42:43,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:42:43,654 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 385 [2023-11-28 20:42:43,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:42:43,661 INFO L225 Difference]: With dead ends: 7817 [2023-11-28 20:42:43,661 INFO L226 Difference]: Without dead ends: 4068 [2023-11-28 20:42:43,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:42:43,665 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 55 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 20:42:43,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 440 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 20:42:43,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4068 states. [2023-11-28 20:42:44,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4068 to 4068. [2023-11-28 20:42:44,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4068 states, 3303 states have (on average 1.1559188616409324) internal successors, (3818), 3336 states have internal predecessors, (3818), 491 states have call successors, (491), 273 states have call predecessors, (491), 273 states have return successors, (491), 458 states have call predecessors, (491), 491 states have call successors, (491) [2023-11-28 20:42:44,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4068 states to 4068 states and 4800 transitions. [2023-11-28 20:42:44,862 INFO L78 Accepts]: Start accepts. Automaton has 4068 states and 4800 transitions. Word has length 385 [2023-11-28 20:42:44,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:42:44,863 INFO L495 AbstractCegarLoop]: Abstraction has 4068 states and 4800 transitions. [2023-11-28 20:42:44,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-11-28 20:42:44,863 INFO L276 IsEmpty]: Start isEmpty. Operand 4068 states and 4800 transitions. [2023-11-28 20:42:44,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2023-11-28 20:42:44,866 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:42:44,866 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 12, 12, 10, 9, 8, 8, 8, 7, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:42:44,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2023-11-28 20:42:44,867 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:42:44,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:42:44,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1100580121, now seen corresponding path program 1 times [2023-11-28 20:42:44,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:42:44,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448258595] [2023-11-28 20:42:44,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:42:44,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:42:44,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:45,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:42:45,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:45,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:42:45,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:45,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:42:45,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:45,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:42:45,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:45,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:42:45,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:45,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:42:45,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:45,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:42:45,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:45,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:42:45,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:45,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:42:45,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:45,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:42:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:45,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:42:45,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:45,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:42:45,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:45,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 20:42:45,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:45,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:42:45,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:45,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:42:45,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:45,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-28 20:42:45,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:45,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-11-28 20:42:45,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:45,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-11-28 20:42:45,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:45,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-11-28 20:42:45,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:45,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-11-28 20:42:45,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:45,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-11-28 20:42:45,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:45,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2023-11-28 20:42:45,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:45,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2023-11-28 20:42:45,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:45,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2023-11-28 20:42:45,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:45,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2023-11-28 20:42:45,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:45,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2023-11-28 20:42:45,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:45,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-28 20:42:45,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:45,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2023-11-28 20:42:45,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:45,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2023-11-28 20:42:45,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:45,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2023-11-28 20:42:45,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:45,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2023-11-28 20:42:45,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:45,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2023-11-28 20:42:45,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:45,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2023-11-28 20:42:45,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:45,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2023-11-28 20:42:45,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:45,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1113 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2023-11-28 20:42:45,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:42:45,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448258595] [2023-11-28 20:42:45,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448258595] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:42:45,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810228903] [2023-11-28 20:42:45,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:42:45,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:42:45,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:42:45,110 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:42:45,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-28 20:42:45,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:45,319 INFO L262 TraceCheckSpWp]: Trace formula consists of 1335 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-28 20:42:45,324 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:42:45,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1113 backedges. 284 proven. 0 refuted. 0 times theorem prover too weak. 829 trivial. 0 not checked. [2023-11-28 20:42:45,393 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:42:45,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810228903] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:42:45,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:42:45,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2023-11-28 20:42:45,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662627416] [2023-11-28 20:42:45,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:42:45,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-28 20:42:45,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:42:45,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-28 20:42:45,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-11-28 20:42:45,395 INFO L87 Difference]: Start difference. First operand 4068 states and 4800 transitions. Second operand has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 8 states have internal predecessors, (147), 3 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2023-11-28 20:42:47,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:42:47,475 INFO L93 Difference]: Finished difference Result 8955 states and 10615 transitions. [2023-11-28 20:42:47,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-28 20:42:47,475 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 8 states have internal predecessors, (147), 3 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) Word has length 385 [2023-11-28 20:42:47,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:42:47,483 INFO L225 Difference]: With dead ends: 8955 [2023-11-28 20:42:47,483 INFO L226 Difference]: Without dead ends: 5583 [2023-11-28 20:42:47,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 454 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2023-11-28 20:42:47,487 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 362 mSDsluCounter, 1831 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 2192 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-28 20:42:47,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 2192 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-28 20:42:47,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5583 states. [2023-11-28 20:42:48,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5583 to 4050. [2023-11-28 20:42:48,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4050 states, 3291 states have (on average 1.1510179276815558) internal successors, (3788), 3324 states have internal predecessors, (3788), 485 states have call successors, (485), 273 states have call predecessors, (485), 273 states have return successors, (485), 452 states have call predecessors, (485), 485 states have call successors, (485) [2023-11-28 20:42:48,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4050 states to 4050 states and 4758 transitions. [2023-11-28 20:42:48,651 INFO L78 Accepts]: Start accepts. Automaton has 4050 states and 4758 transitions. Word has length 385 [2023-11-28 20:42:48,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:42:48,651 INFO L495 AbstractCegarLoop]: Abstraction has 4050 states and 4758 transitions. [2023-11-28 20:42:48,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.333333333333332) internal successors, (147), 8 states have internal predecessors, (147), 3 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2023-11-28 20:42:48,651 INFO L276 IsEmpty]: Start isEmpty. Operand 4050 states and 4758 transitions. [2023-11-28 20:42:48,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2023-11-28 20:42:48,655 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:42:48,655 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 12, 12, 10, 9, 8, 8, 8, 7, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:42:48,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-28 20:42:48,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2023-11-28 20:42:48,855 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:42:48,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:42:48,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1200242469, now seen corresponding path program 1 times [2023-11-28 20:42:48,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:42:48,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680570439] [2023-11-28 20:42:48,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:42:48,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:42:48,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:49,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:42:49,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:49,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:42:49,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:49,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:42:49,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:49,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:42:49,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:49,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:42:49,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:49,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:42:49,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:49,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:42:49,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:49,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:42:49,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:49,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:42:49,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:49,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:42:49,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:49,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:42:49,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:49,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:42:49,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:49,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 20:42:49,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:49,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:42:49,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:49,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:42:49,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:49,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-28 20:42:49,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:49,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-11-28 20:42:49,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:49,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-11-28 20:42:49,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:49,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-11-28 20:42:49,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:49,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-11-28 20:42:49,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:49,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-11-28 20:42:49,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:49,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2023-11-28 20:42:49,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:49,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2023-11-28 20:42:49,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:49,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2023-11-28 20:42:49,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:49,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2023-11-28 20:42:49,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:49,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2023-11-28 20:42:49,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:49,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-28 20:42:49,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:49,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2023-11-28 20:42:49,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:49,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2023-11-28 20:42:49,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:49,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2023-11-28 20:42:49,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:49,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2023-11-28 20:42:49,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:49,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2023-11-28 20:42:49,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:49,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2023-11-28 20:42:49,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:49,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2023-11-28 20:42:49,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:49,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1113 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2023-11-28 20:42:49,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:42:49,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680570439] [2023-11-28 20:42:49,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680570439] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:42:49,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:42:49,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-28 20:42:49,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657588280] [2023-11-28 20:42:49,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:42:49,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-28 20:42:49,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:42:49,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-28 20:42:49,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-28 20:42:49,115 INFO L87 Difference]: Start difference. First operand 4050 states and 4758 transitions. Second operand has 10 states, 10 states have (on average 12.6) internal successors, (126), 8 states have internal predecessors, (126), 3 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-28 20:42:52,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:42:52,048 INFO L93 Difference]: Finished difference Result 9223 states and 10897 transitions. [2023-11-28 20:42:52,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-28 20:42:52,048 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 8 states have internal predecessors, (126), 3 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) Word has length 385 [2023-11-28 20:42:52,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:42:52,055 INFO L225 Difference]: With dead ends: 9223 [2023-11-28 20:42:52,056 INFO L226 Difference]: Without dead ends: 5869 [2023-11-28 20:42:52,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2023-11-28 20:42:52,059 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 421 mSDsluCounter, 1648 mSDsCounter, 0 mSdLazyCounter, 1396 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 1942 SdHoareTripleChecker+Invalid, 1471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-28 20:42:52,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 1942 Invalid, 1471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1396 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-28 20:42:52,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5869 states. [2023-11-28 20:42:53,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5869 to 4026. [2023-11-28 20:42:53,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4026 states, 3267 states have (on average 1.1484542393633304) internal successors, (3752), 3300 states have internal predecessors, (3752), 485 states have call successors, (485), 273 states have call predecessors, (485), 273 states have return successors, (485), 452 states have call predecessors, (485), 485 states have call successors, (485) [2023-11-28 20:42:53,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4026 states to 4026 states and 4722 transitions. [2023-11-28 20:42:53,223 INFO L78 Accepts]: Start accepts. Automaton has 4026 states and 4722 transitions. Word has length 385 [2023-11-28 20:42:53,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:42:53,223 INFO L495 AbstractCegarLoop]: Abstraction has 4026 states and 4722 transitions. [2023-11-28 20:42:53,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.6) internal successors, (126), 8 states have internal predecessors, (126), 3 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-28 20:42:53,223 INFO L276 IsEmpty]: Start isEmpty. Operand 4026 states and 4722 transitions. [2023-11-28 20:42:53,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2023-11-28 20:42:53,226 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:42:53,227 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 12, 12, 10, 9, 8, 8, 8, 7, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:42:53,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2023-11-28 20:42:53,227 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:42:53,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:42:53,227 INFO L85 PathProgramCache]: Analyzing trace with hash 807215459, now seen corresponding path program 1 times [2023-11-28 20:42:53,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:42:53,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667043933] [2023-11-28 20:42:53,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:42:53,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:42:53,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:53,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:42:53,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:53,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:42:53,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:53,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:42:53,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:53,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:42:53,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:53,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:42:53,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:53,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:42:53,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:53,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:42:53,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:53,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:42:53,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:53,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:42:53,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:53,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:42:53,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:53,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:42:53,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:53,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:42:53,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:53,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 20:42:53,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:53,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:42:53,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:53,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:42:53,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:53,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-28 20:42:53,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:53,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-11-28 20:42:53,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:53,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-11-28 20:42:53,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:53,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-11-28 20:42:53,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:53,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-11-28 20:42:53,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:53,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-11-28 20:42:53,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:53,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2023-11-28 20:42:53,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:53,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2023-11-28 20:42:53,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:53,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2023-11-28 20:42:53,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:53,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2023-11-28 20:42:53,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:53,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2023-11-28 20:42:53,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:53,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-28 20:42:53,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:53,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2023-11-28 20:42:53,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:53,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2023-11-28 20:42:53,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:53,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2023-11-28 20:42:53,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:53,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2023-11-28 20:42:53,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:53,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2023-11-28 20:42:53,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:53,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2023-11-28 20:42:53,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:53,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2023-11-28 20:42:53,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:53,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1113 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1109 trivial. 0 not checked. [2023-11-28 20:42:53,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:42:53,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667043933] [2023-11-28 20:42:53,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667043933] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:42:53,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:42:53,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 20:42:53,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211371012] [2023-11-28 20:42:53,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:42:53,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:42:53,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:42:53,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:42:53,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:42:53,397 INFO L87 Difference]: Start difference. First operand 4026 states and 4722 transitions. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 4 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-11-28 20:42:54,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:42:54,910 INFO L93 Difference]: Finished difference Result 7530 states and 8908 transitions. [2023-11-28 20:42:54,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:42:54,911 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 4 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 385 [2023-11-28 20:42:54,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:42:54,917 INFO L225 Difference]: With dead ends: 7530 [2023-11-28 20:42:54,917 INFO L226 Difference]: Without dead ends: 4200 [2023-11-28 20:42:54,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:42:54,920 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 74 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 20:42:54,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 648 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 20:42:54,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4200 states. [2023-11-28 20:42:56,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4200 to 4017. [2023-11-28 20:42:56,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4017 states, 3258 states have (on average 1.1414978514426029) internal successors, (3719), 3291 states have internal predecessors, (3719), 485 states have call successors, (485), 273 states have call predecessors, (485), 273 states have return successors, (485), 452 states have call predecessors, (485), 485 states have call successors, (485) [2023-11-28 20:42:56,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4017 states to 4017 states and 4689 transitions. [2023-11-28 20:42:56,056 INFO L78 Accepts]: Start accepts. Automaton has 4017 states and 4689 transitions. Word has length 385 [2023-11-28 20:42:56,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:42:56,057 INFO L495 AbstractCegarLoop]: Abstraction has 4017 states and 4689 transitions. [2023-11-28 20:42:56,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 4 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-11-28 20:42:56,057 INFO L276 IsEmpty]: Start isEmpty. Operand 4017 states and 4689 transitions. [2023-11-28 20:42:56,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2023-11-28 20:42:56,060 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:42:56,060 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 12, 12, 10, 9, 8, 8, 8, 7, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:42:56,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2023-11-28 20:42:56,060 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:42:56,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:42:56,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1169385252, now seen corresponding path program 1 times [2023-11-28 20:42:56,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:42:56,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046251438] [2023-11-28 20:42:56,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:42:56,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:42:56,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:56,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:42:56,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:56,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:42:56,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:56,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:42:56,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:56,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:42:56,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:56,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:42:56,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:56,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:42:56,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:56,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:42:56,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:56,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:42:56,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:56,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:42:56,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:56,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:42:56,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:56,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:42:56,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:56,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:42:56,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:56,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 20:42:56,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:56,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:42:56,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:56,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:42:56,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:56,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-28 20:42:56,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:56,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-11-28 20:42:56,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:56,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-11-28 20:42:56,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:56,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-11-28 20:42:56,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:56,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-11-28 20:42:56,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:56,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-11-28 20:42:56,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:56,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2023-11-28 20:42:56,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:56,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2023-11-28 20:42:56,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:56,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2023-11-28 20:42:56,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:56,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2023-11-28 20:42:56,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:56,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2023-11-28 20:42:56,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:56,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-28 20:42:56,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:56,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2023-11-28 20:42:56,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:56,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2023-11-28 20:42:56,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:56,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2023-11-28 20:42:56,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:56,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2023-11-28 20:42:56,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:56,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2023-11-28 20:42:56,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:56,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2023-11-28 20:42:56,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:56,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2023-11-28 20:42:56,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:42:56,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1113 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 1095 trivial. 0 not checked. [2023-11-28 20:42:56,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:42:56,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046251438] [2023-11-28 20:42:56,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046251438] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:42:56,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:42:56,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 20:42:56,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932882387] [2023-11-28 20:42:56,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:42:56,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:42:56,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:42:56,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:42:56,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:42:56,198 INFO L87 Difference]: Start difference. First operand 4017 states and 4689 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-28 20:42:58,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:42:58,786 INFO L93 Difference]: Finished difference Result 8885 states and 10364 transitions. [2023-11-28 20:42:58,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:42:58,787 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 385 [2023-11-28 20:42:58,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:42:58,795 INFO L225 Difference]: With dead ends: 8885 [2023-11-28 20:42:58,795 INFO L226 Difference]: Without dead ends: 5564 [2023-11-28 20:42:58,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:42:58,799 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 162 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-28 20:42:58,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 581 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-28 20:42:58,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5564 states. [2023-11-28 20:43:00,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5564 to 4443. [2023-11-28 20:43:00,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4443 states, 3594 states have (on average 1.1346688925987758) internal successors, (4078), 3633 states have internal predecessors, (4078), 545 states have call successors, (545), 303 states have call predecessors, (545), 303 states have return successors, (545), 506 states have call predecessors, (545), 545 states have call successors, (545) [2023-11-28 20:43:00,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4443 states to 4443 states and 5168 transitions. [2023-11-28 20:43:00,202 INFO L78 Accepts]: Start accepts. Automaton has 4443 states and 5168 transitions. Word has length 385 [2023-11-28 20:43:00,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:43:00,202 INFO L495 AbstractCegarLoop]: Abstraction has 4443 states and 5168 transitions. [2023-11-28 20:43:00,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-28 20:43:00,203 INFO L276 IsEmpty]: Start isEmpty. Operand 4443 states and 5168 transitions. [2023-11-28 20:43:00,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2023-11-28 20:43:00,206 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:43:00,206 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 12, 12, 10, 9, 8, 8, 8, 7, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:43:00,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2023-11-28 20:43:00,206 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:43:00,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:43:00,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1757222876, now seen corresponding path program 1 times [2023-11-28 20:43:00,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:43:00,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888743121] [2023-11-28 20:43:00,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:43:00,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:43:00,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:00,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:43:00,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:00,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:43:00,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:00,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:43:00,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:00,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:43:00,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:00,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:43:00,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:00,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:43:00,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:00,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:43:00,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:00,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:43:00,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:00,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:43:00,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:00,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:43:00,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:00,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:43:00,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:00,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:43:00,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:00,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 20:43:00,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:00,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:43:00,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:00,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:43:00,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:00,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-28 20:43:00,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:00,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-11-28 20:43:00,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:00,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-11-28 20:43:00,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:00,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-11-28 20:43:00,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:00,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-11-28 20:43:00,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:00,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-11-28 20:43:00,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:00,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2023-11-28 20:43:00,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:00,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2023-11-28 20:43:00,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:00,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2023-11-28 20:43:00,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:00,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2023-11-28 20:43:00,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:00,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2023-11-28 20:43:00,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:00,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-28 20:43:00,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:00,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2023-11-28 20:43:00,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:00,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2023-11-28 20:43:00,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:00,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2023-11-28 20:43:00,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:00,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2023-11-28 20:43:00,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:00,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2023-11-28 20:43:00,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:00,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2023-11-28 20:43:00,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:00,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2023-11-28 20:43:00,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:00,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1113 backedges. 56 proven. 50 refuted. 0 times theorem prover too weak. 1007 trivial. 0 not checked. [2023-11-28 20:43:00,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:43:00,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888743121] [2023-11-28 20:43:00,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888743121] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:43:00,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622306872] [2023-11-28 20:43:00,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:43:00,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:43:00,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:43:00,803 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:43:00,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-28 20:43:01,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:01,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 1334 conjuncts, 68 conjunts are in the unsatisfiable core [2023-11-28 20:43:01,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:43:02,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1113 backedges. 582 proven. 249 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2023-11-28 20:43:02,057 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:43:03,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1113 backedges. 163 proven. 154 refuted. 0 times theorem prover too weak. 796 trivial. 0 not checked. [2023-11-28 20:43:03,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622306872] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:43:03,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 20:43:03,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 26, 21] total 54 [2023-11-28 20:43:03,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817230124] [2023-11-28 20:43:03,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 20:43:03,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-11-28 20:43:03,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:43:03,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-11-28 20:43:03,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=2651, Unknown=0, NotChecked=0, Total=2862 [2023-11-28 20:43:03,211 INFO L87 Difference]: Start difference. First operand 4443 states and 5168 transitions. Second operand has 54 states, 54 states have (on average 7.462962962962963) internal successors, (403), 45 states have internal predecessors, (403), 15 states have call successors, (70), 11 states have call predecessors, (70), 24 states have return successors, (75), 23 states have call predecessors, (75), 15 states have call successors, (75) [2023-11-28 20:43:18,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:43:18,119 INFO L93 Difference]: Finished difference Result 16160 states and 19109 transitions. [2023-11-28 20:43:18,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2023-11-28 20:43:18,120 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 7.462962962962963) internal successors, (403), 45 states have internal predecessors, (403), 15 states have call successors, (70), 11 states have call predecessors, (70), 24 states have return successors, (75), 23 states have call predecessors, (75), 15 states have call successors, (75) Word has length 385 [2023-11-28 20:43:18,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:43:18,137 INFO L225 Difference]: With dead ends: 16160 [2023-11-28 20:43:18,137 INFO L226 Difference]: Without dead ends: 12121 [2023-11-28 20:43:18,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 987 GetRequests, 811 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9346 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=2551, Invalid=28955, Unknown=0, NotChecked=0, Total=31506 [2023-11-28 20:43:18,143 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 2368 mSDsluCounter, 8292 mSDsCounter, 0 mSdLazyCounter, 6508 mSolverCounterSat, 693 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2377 SdHoareTripleChecker+Valid, 8558 SdHoareTripleChecker+Invalid, 7201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 693 IncrementalHoareTripleChecker+Valid, 6508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-28 20:43:18,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2377 Valid, 8558 Invalid, 7201 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [693 Valid, 6508 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-28 20:43:18,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12121 states. [2023-11-28 20:43:20,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12121 to 6390. [2023-11-28 20:43:20,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6390 states, 5191 states have (on average 1.1325370834136004) internal successors, (5879), 5243 states have internal predecessors, (5879), 759 states have call successors, (759), 439 states have call predecessors, (759), 439 states have return successors, (759), 707 states have call predecessors, (759), 759 states have call successors, (759) [2023-11-28 20:43:20,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6390 states to 6390 states and 7397 transitions. [2023-11-28 20:43:20,257 INFO L78 Accepts]: Start accepts. Automaton has 6390 states and 7397 transitions. Word has length 385 [2023-11-28 20:43:20,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:43:20,257 INFO L495 AbstractCegarLoop]: Abstraction has 6390 states and 7397 transitions. [2023-11-28 20:43:20,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 7.462962962962963) internal successors, (403), 45 states have internal predecessors, (403), 15 states have call successors, (70), 11 states have call predecessors, (70), 24 states have return successors, (75), 23 states have call predecessors, (75), 15 states have call successors, (75) [2023-11-28 20:43:20,257 INFO L276 IsEmpty]: Start isEmpty. Operand 6390 states and 7397 transitions. [2023-11-28 20:43:20,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2023-11-28 20:43:20,262 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:43:20,262 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 12, 12, 11, 11, 11, 10, 10, 9, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:43:20,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-11-28 20:43:20,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:43:20,463 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:43:20,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:43:20,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1447222884, now seen corresponding path program 1 times [2023-11-28 20:43:20,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:43:20,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330277124] [2023-11-28 20:43:20,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:43:20,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:43:20,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:21,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:43:21,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:21,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:43:21,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:21,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:43:21,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:21,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:43:21,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:21,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:43:21,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:21,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:43:21,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:21,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:43:21,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:21,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:43:21,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:21,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:43:21,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:21,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:43:21,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:21,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:43:21,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:21,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:43:21,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:21,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 20:43:21,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:21,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:43:21,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:21,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:43:21,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:21,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-28 20:43:21,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:21,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-11-28 20:43:21,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:21,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-11-28 20:43:21,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:21,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2023-11-28 20:43:21,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:21,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2023-11-28 20:43:21,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:21,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2023-11-28 20:43:21,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:21,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2023-11-28 20:43:21,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:21,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2023-11-28 20:43:21,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:21,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2023-11-28 20:43:21,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:21,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2023-11-28 20:43:21,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:21,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2023-11-28 20:43:21,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:21,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2023-11-28 20:43:21,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:21,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2023-11-28 20:43:21,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:21,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2023-11-28 20:43:21,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:21,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2023-11-28 20:43:21,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:21,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2023-11-28 20:43:21,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:21,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2023-11-28 20:43:21,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:21,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2023-11-28 20:43:21,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:21,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2023-11-28 20:43:21,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:21,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2023-11-28 20:43:21,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:21,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2023-11-28 20:43:21,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:21,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2023-11-28 20:43:21,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:21,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1259 backedges. 47 proven. 32 refuted. 0 times theorem prover too weak. 1180 trivial. 0 not checked. [2023-11-28 20:43:21,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:43:21,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330277124] [2023-11-28 20:43:21,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330277124] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:43:21,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341279084] [2023-11-28 20:43:21,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:43:21,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:43:21,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:43:21,372 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:43:21,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-28 20:43:21,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:21,604 INFO L262 TraceCheckSpWp]: Trace formula consists of 1431 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-28 20:43:21,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:43:21,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1259 backedges. 525 proven. 80 refuted. 0 times theorem prover too weak. 654 trivial. 0 not checked. [2023-11-28 20:43:21,945 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:43:22,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1259 backedges. 90 proven. 33 refuted. 0 times theorem prover too weak. 1136 trivial. 0 not checked. [2023-11-28 20:43:22,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341279084] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:43:22,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 20:43:22,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 12, 12] total 37 [2023-11-28 20:43:22,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773035856] [2023-11-28 20:43:22,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 20:43:22,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-11-28 20:43:22,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:43:22,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-11-28 20:43:22,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1230, Unknown=0, NotChecked=0, Total=1332 [2023-11-28 20:43:22,356 INFO L87 Difference]: Start difference. First operand 6390 states and 7397 transitions. Second operand has 37 states, 37 states have (on average 7.972972972972973) internal successors, (295), 31 states have internal predecessors, (295), 10 states have call successors, (70), 7 states have call predecessors, (70), 13 states have return successors, (70), 15 states have call predecessors, (70), 10 states have call successors, (70) [2023-11-28 20:43:55,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:43:55,187 INFO L93 Difference]: Finished difference Result 37572 states and 44107 transitions. [2023-11-28 20:43:55,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 271 states. [2023-11-28 20:43:55,188 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 7.972972972972973) internal successors, (295), 31 states have internal predecessors, (295), 10 states have call successors, (70), 7 states have call predecessors, (70), 13 states have return successors, (70), 15 states have call predecessors, (70), 10 states have call successors, (70) Word has length 414 [2023-11-28 20:43:55,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:43:55,232 INFO L225 Difference]: With dead ends: 37572 [2023-11-28 20:43:55,233 INFO L226 Difference]: Without dead ends: 32026 [2023-11-28 20:43:55,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1223 GetRequests, 919 SyntacticMatches, 1 SemanticMatches, 303 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36536 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=6415, Invalid=86305, Unknown=0, NotChecked=0, Total=92720 [2023-11-28 20:43:55,245 INFO L413 NwaCegarLoop]: 669 mSDtfsCounter, 4552 mSDsluCounter, 12851 mSDsCounter, 0 mSdLazyCounter, 14462 mSolverCounterSat, 1265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4553 SdHoareTripleChecker+Valid, 13520 SdHoareTripleChecker+Invalid, 15727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1265 IncrementalHoareTripleChecker+Valid, 14462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2023-11-28 20:43:55,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4553 Valid, 13520 Invalid, 15727 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1265 Valid, 14462 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2023-11-28 20:43:55,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32026 states. [2023-11-28 20:43:58,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32026 to 9666. [2023-11-28 20:43:58,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9666 states, 7890 states have (on average 1.1337135614702154) internal successors, (8945), 7963 states have internal predecessors, (8945), 1104 states have call successors, (1104), 671 states have call predecessors, (1104), 671 states have return successors, (1104), 1031 states have call predecessors, (1104), 1104 states have call successors, (1104) [2023-11-28 20:43:58,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9666 states to 9666 states and 11153 transitions. [2023-11-28 20:43:58,718 INFO L78 Accepts]: Start accepts. Automaton has 9666 states and 11153 transitions. Word has length 414 [2023-11-28 20:43:58,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:43:58,719 INFO L495 AbstractCegarLoop]: Abstraction has 9666 states and 11153 transitions. [2023-11-28 20:43:58,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 7.972972972972973) internal successors, (295), 31 states have internal predecessors, (295), 10 states have call successors, (70), 7 states have call predecessors, (70), 13 states have return successors, (70), 15 states have call predecessors, (70), 10 states have call successors, (70) [2023-11-28 20:43:58,719 INFO L276 IsEmpty]: Start isEmpty. Operand 9666 states and 11153 transitions. [2023-11-28 20:43:58,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2023-11-28 20:43:58,725 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:43:58,726 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 12, 11, 11, 11, 10, 9, 9, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:43:58,761 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-11-28 20:43:58,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:43:58,926 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:43:58,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:43:58,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1210423597, now seen corresponding path program 1 times [2023-11-28 20:43:58,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:43:58,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405402456] [2023-11-28 20:43:58,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:43:58,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:43:58,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:59,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:43:59,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:59,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:43:59,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:59,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:43:59,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:59,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:43:59,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:59,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:43:59,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:59,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:43:59,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:59,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:43:59,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:59,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:43:59,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:59,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:43:59,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:59,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:43:59,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:59,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:43:59,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:59,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:43:59,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:59,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 20:43:59,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:59,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:43:59,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:59,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:43:59,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:59,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-28 20:43:59,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:59,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-11-28 20:43:59,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:59,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-11-28 20:43:59,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:59,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-11-28 20:43:59,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:59,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-11-28 20:43:59,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:59,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-11-28 20:43:59,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:59,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2023-11-28 20:43:59,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:59,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2023-11-28 20:43:59,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:59,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2023-11-28 20:43:59,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:59,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2023-11-28 20:43:59,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:59,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2023-11-28 20:43:59,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:59,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2023-11-28 20:43:59,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:59,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2023-11-28 20:43:59,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:59,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2023-11-28 20:43:59,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:59,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2023-11-28 20:43:59,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:59,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2023-11-28 20:43:59,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:59,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2023-11-28 20:43:59,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:59,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2023-11-28 20:43:59,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:59,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2023-11-28 20:43:59,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:59,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2023-11-28 20:43:59,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:59,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2023-11-28 20:43:59,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:59,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2023-11-28 20:43:59,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:59,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2023-11-28 20:43:59,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:43:59,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1311 backedges. 24 proven. 23 refuted. 0 times theorem prover too weak. 1264 trivial. 0 not checked. [2023-11-28 20:43:59,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:43:59,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405402456] [2023-11-28 20:43:59,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405402456] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:43:59,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849335013] [2023-11-28 20:43:59,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:43:59,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:43:59,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:43:59,891 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:43:59,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-28 20:44:00,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:00,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 1432 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-28 20:44:00,084 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:44:00,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1311 backedges. 632 proven. 0 refuted. 0 times theorem prover too weak. 679 trivial. 0 not checked. [2023-11-28 20:44:00,284 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:44:00,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849335013] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:44:00,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:44:00,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [17] total 25 [2023-11-28 20:44:00,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60097306] [2023-11-28 20:44:00,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:44:00,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-28 20:44:00,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:44:00,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-28 20:44:00,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=548, Unknown=0, NotChecked=0, Total=600 [2023-11-28 20:44:00,286 INFO L87 Difference]: Start difference. First operand 9666 states and 11153 transitions. Second operand has 10 states, 10 states have (on average 17.7) internal successors, (177), 9 states have internal predecessors, (177), 4 states have call successors, (30), 4 states have call predecessors, (30), 5 states have return successors, (30), 5 states have call predecessors, (30), 4 states have call successors, (30) [2023-11-28 20:44:04,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:44:04,153 INFO L93 Difference]: Finished difference Result 18149 states and 20994 transitions. [2023-11-28 20:44:04,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-28 20:44:04,154 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 17.7) internal successors, (177), 9 states have internal predecessors, (177), 4 states have call successors, (30), 4 states have call predecessors, (30), 5 states have return successors, (30), 5 states have call predecessors, (30), 4 states have call successors, (30) Word has length 417 [2023-11-28 20:44:04,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:44:04,168 INFO L225 Difference]: With dead ends: 18149 [2023-11-28 20:44:04,168 INFO L226 Difference]: Without dead ends: 10386 [2023-11-28 20:44:04,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 485 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=117, Invalid=1073, Unknown=0, NotChecked=0, Total=1190 [2023-11-28 20:44:04,175 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 235 mSDsluCounter, 1715 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 1978 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 20:44:04,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 1978 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 20:44:04,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10386 states. [2023-11-28 20:44:07,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10386 to 9648. [2023-11-28 20:44:07,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9648 states, 7880 states have (on average 1.1328680203045685) internal successors, (8927), 7950 states have internal predecessors, (8927), 1096 states have call successors, (1096), 671 states have call predecessors, (1096), 671 states have return successors, (1096), 1026 states have call predecessors, (1096), 1096 states have call successors, (1096) [2023-11-28 20:44:07,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9648 states to 9648 states and 11119 transitions. [2023-11-28 20:44:07,518 INFO L78 Accepts]: Start accepts. Automaton has 9648 states and 11119 transitions. Word has length 417 [2023-11-28 20:44:07,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:44:07,518 INFO L495 AbstractCegarLoop]: Abstraction has 9648 states and 11119 transitions. [2023-11-28 20:44:07,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.7) internal successors, (177), 9 states have internal predecessors, (177), 4 states have call successors, (30), 4 states have call predecessors, (30), 5 states have return successors, (30), 5 states have call predecessors, (30), 4 states have call successors, (30) [2023-11-28 20:44:07,518 INFO L276 IsEmpty]: Start isEmpty. Operand 9648 states and 11119 transitions. [2023-11-28 20:44:07,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2023-11-28 20:44:07,524 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:44:07,525 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 12, 12, 11, 11, 11, 10, 10, 9, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:44:07,530 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-11-28 20:44:07,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:44:07,725 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:44:07,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:44:07,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1169310157, now seen corresponding path program 1 times [2023-11-28 20:44:07,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:44:07,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029306964] [2023-11-28 20:44:07,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:44:07,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:44:07,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:07,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:44:07,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:07,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:44:07,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:07,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:44:07,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:07,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:44:07,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:07,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:44:07,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:07,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:44:07,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:07,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:44:07,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:07,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:44:07,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:07,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:44:07,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:07,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:44:07,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:07,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:44:07,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:07,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:44:07,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:07,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 20:44:07,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:07,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:44:07,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:07,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:44:07,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:07,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-28 20:44:07,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:08,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-11-28 20:44:08,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:08,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-11-28 20:44:08,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:08,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2023-11-28 20:44:08,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:08,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-11-28 20:44:08,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:08,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2023-11-28 20:44:08,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:08,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2023-11-28 20:44:08,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:08,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2023-11-28 20:44:08,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:08,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2023-11-28 20:44:08,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:08,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-11-28 20:44:08,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:08,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2023-11-28 20:44:08,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:08,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2023-11-28 20:44:08,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:08,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2023-11-28 20:44:08,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:08,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2023-11-28 20:44:08,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:08,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2023-11-28 20:44:08,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:08,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2023-11-28 20:44:08,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:08,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2023-11-28 20:44:08,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:08,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2023-11-28 20:44:08,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:08,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2023-11-28 20:44:08,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:08,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2023-11-28 20:44:08,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:08,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2023-11-28 20:44:08,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:08,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2023-11-28 20:44:08,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:08,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1258 backedges. 44 proven. 4 refuted. 0 times theorem prover too weak. 1210 trivial. 0 not checked. [2023-11-28 20:44:08,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:44:08,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029306964] [2023-11-28 20:44:08,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029306964] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:44:08,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011116015] [2023-11-28 20:44:08,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:44:08,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:44:08,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:44:08,041 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:44:08,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-28 20:44:08,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:08,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 1445 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 20:44:08,255 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:44:08,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1258 backedges. 327 proven. 0 refuted. 0 times theorem prover too weak. 931 trivial. 0 not checked. [2023-11-28 20:44:08,325 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:44:08,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011116015] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:44:08,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:44:08,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2023-11-28 20:44:08,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794262248] [2023-11-28 20:44:08,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:44:08,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:44:08,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:44:08,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:44:08,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-11-28 20:44:08,327 INFO L87 Difference]: Start difference. First operand 9648 states and 11119 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 3 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2023-11-28 20:44:13,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:44:13,203 INFO L93 Difference]: Finished difference Result 19727 states and 22648 transitions. [2023-11-28 20:44:13,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:44:13,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 3 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 417 [2023-11-28 20:44:13,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:44:13,219 INFO L225 Difference]: With dead ends: 19727 [2023-11-28 20:44:13,219 INFO L226 Difference]: Without dead ends: 12022 [2023-11-28 20:44:13,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 490 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-11-28 20:44:13,227 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 92 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:44:13,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 555 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 20:44:13,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12022 states. [2023-11-28 20:44:16,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12022 to 9483. [2023-11-28 20:44:16,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9483 states, 7750 states have (on average 1.1305806451612903) internal successors, (8762), 7815 states have internal predecessors, (8762), 1066 states have call successors, (1066), 666 states have call predecessors, (1066), 666 states have return successors, (1066), 1001 states have call predecessors, (1066), 1066 states have call successors, (1066) [2023-11-28 20:44:16,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9483 states to 9483 states and 10894 transitions. [2023-11-28 20:44:16,748 INFO L78 Accepts]: Start accepts. Automaton has 9483 states and 10894 transitions. Word has length 417 [2023-11-28 20:44:16,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:44:16,748 INFO L495 AbstractCegarLoop]: Abstraction has 9483 states and 10894 transitions. [2023-11-28 20:44:16,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 3 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2023-11-28 20:44:16,748 INFO L276 IsEmpty]: Start isEmpty. Operand 9483 states and 10894 transitions. [2023-11-28 20:44:16,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2023-11-28 20:44:16,755 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:44:16,755 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 12, 12, 11, 11, 11, 10, 10, 9, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:44:16,761 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-11-28 20:44:16,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:44:16,956 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:44:16,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:44:16,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1138277950, now seen corresponding path program 1 times [2023-11-28 20:44:16,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:44:16,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953492772] [2023-11-28 20:44:16,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:44:16,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:44:16,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:17,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:44:17,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:17,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:44:17,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:17,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:44:17,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:17,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:44:17,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:17,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:44:17,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:17,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:44:17,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:17,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:44:17,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:17,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:44:17,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:17,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:44:17,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:17,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:44:17,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:17,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:44:17,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:17,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:44:17,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:17,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 20:44:17,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:17,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:44:17,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:17,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:44:17,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:17,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-28 20:44:17,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:17,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-11-28 20:44:17,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:17,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-11-28 20:44:17,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:17,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2023-11-28 20:44:17,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:17,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-11-28 20:44:17,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:17,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2023-11-28 20:44:17,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:17,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2023-11-28 20:44:17,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:17,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2023-11-28 20:44:17,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:17,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2023-11-28 20:44:17,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:17,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-11-28 20:44:17,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:17,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2023-11-28 20:44:17,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:17,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2023-11-28 20:44:17,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:17,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2023-11-28 20:44:17,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:17,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2023-11-28 20:44:17,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:17,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2023-11-28 20:44:17,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:17,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2023-11-28 20:44:17,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:17,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2023-11-28 20:44:17,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:17,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2023-11-28 20:44:17,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:17,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2023-11-28 20:44:17,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:17,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2023-11-28 20:44:17,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:17,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2023-11-28 20:44:17,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:17,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2023-11-28 20:44:17,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:17,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1259 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 1210 trivial. 0 not checked. [2023-11-28 20:44:17,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:44:17,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953492772] [2023-11-28 20:44:17,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953492772] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:44:17,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:44:17,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-28 20:44:17,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900861120] [2023-11-28 20:44:17,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:44:17,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-28 20:44:17,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:44:17,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-28 20:44:17,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-28 20:44:17,242 INFO L87 Difference]: Start difference. First operand 9483 states and 10894 transitions. Second operand has 10 states, 10 states have (on average 14.2) internal successors, (142), 8 states have internal predecessors, (142), 3 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2023-11-28 20:44:24,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:44:24,201 INFO L93 Difference]: Finished difference Result 22050 states and 25461 transitions. [2023-11-28 20:44:24,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-28 20:44:24,202 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.2) internal successors, (142), 8 states have internal predecessors, (142), 3 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) Word has length 417 [2023-11-28 20:44:24,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:44:24,227 INFO L225 Difference]: With dead ends: 22050 [2023-11-28 20:44:24,227 INFO L226 Difference]: Without dead ends: 14510 [2023-11-28 20:44:24,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=580, Unknown=0, NotChecked=0, Total=702 [2023-11-28 20:44:24,237 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 474 mSDsluCounter, 1778 mSDsCounter, 0 mSdLazyCounter, 1584 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 2106 SdHoareTripleChecker+Invalid, 1663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-28 20:44:24,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 2106 Invalid, 1663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1584 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-28 20:44:24,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14510 states. [2023-11-28 20:44:27,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14510 to 9423. [2023-11-28 20:44:27,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9423 states, 7710 states have (on average 1.1286640726329442) internal successors, (8702), 7775 states have internal predecessors, (8702), 1046 states have call successors, (1046), 666 states have call predecessors, (1046), 666 states have return successors, (1046), 981 states have call predecessors, (1046), 1046 states have call successors, (1046) [2023-11-28 20:44:27,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9423 states to 9423 states and 10794 transitions. [2023-11-28 20:44:27,499 INFO L78 Accepts]: Start accepts. Automaton has 9423 states and 10794 transitions. Word has length 417 [2023-11-28 20:44:27,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:44:27,499 INFO L495 AbstractCegarLoop]: Abstraction has 9423 states and 10794 transitions. [2023-11-28 20:44:27,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.2) internal successors, (142), 8 states have internal predecessors, (142), 3 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2023-11-28 20:44:27,500 INFO L276 IsEmpty]: Start isEmpty. Operand 9423 states and 10794 transitions. [2023-11-28 20:44:27,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2023-11-28 20:44:27,506 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:44:27,506 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 12, 12, 11, 11, 11, 10, 10, 9, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:44:27,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2023-11-28 20:44:27,506 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:44:27,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:44:27,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1529502800, now seen corresponding path program 1 times [2023-11-28 20:44:27,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:44:27,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861901921] [2023-11-28 20:44:27,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:44:27,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:44:27,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:28,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:44:28,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:28,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:44:28,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:28,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:44:28,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:28,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:44:28,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:28,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:44:28,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:28,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:44:28,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:28,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:44:28,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:28,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:44:28,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:28,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:44:28,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:28,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:44:28,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:28,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:44:28,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:28,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:44:28,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:28,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 20:44:28,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:28,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:44:28,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:28,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:44:28,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:28,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-28 20:44:28,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:28,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-11-28 20:44:28,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:28,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2023-11-28 20:44:28,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:28,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2023-11-28 20:44:28,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:28,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2023-11-28 20:44:28,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:28,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2023-11-28 20:44:28,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:28,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2023-11-28 20:44:28,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:28,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2023-11-28 20:44:28,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:28,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2023-11-28 20:44:28,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:28,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2023-11-28 20:44:28,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:28,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2023-11-28 20:44:28,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:28,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2023-11-28 20:44:28,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:28,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-28 20:44:28,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:28,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2023-11-28 20:44:28,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:28,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-11-28 20:44:28,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:28,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2023-11-28 20:44:28,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:28,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2023-11-28 20:44:28,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:28,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2023-11-28 20:44:28,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:28,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2023-11-28 20:44:28,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:28,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2023-11-28 20:44:28,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:28,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2023-11-28 20:44:28,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:28,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2023-11-28 20:44:28,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:28,372 INFO L134 CoverageAnalysis]: Checked inductivity of 1259 backedges. 47 proven. 32 refuted. 0 times theorem prover too weak. 1180 trivial. 0 not checked. [2023-11-28 20:44:28,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:44:28,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861901921] [2023-11-28 20:44:28,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861901921] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:44:28,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374247502] [2023-11-28 20:44:28,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:44:28,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:44:28,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:44:28,373 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:44:28,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-28 20:44:28,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:44:28,596 INFO L262 TraceCheckSpWp]: Trace formula consists of 1442 conjuncts, 59 conjunts are in the unsatisfiable core [2023-11-28 20:44:28,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:44:30,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1259 backedges. 399 proven. 337 refuted. 0 times theorem prover too weak. 523 trivial. 0 not checked. [2023-11-28 20:44:30,169 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:44:31,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1259 backedges. 47 proven. 73 refuted. 0 times theorem prover too weak. 1139 trivial. 0 not checked. [2023-11-28 20:44:31,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374247502] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:44:31,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 20:44:31,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22, 18] total 56 [2023-11-28 20:44:31,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194526803] [2023-11-28 20:44:31,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 20:44:31,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2023-11-28 20:44:31,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:44:31,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2023-11-28 20:44:31,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=2799, Unknown=0, NotChecked=0, Total=3080 [2023-11-28 20:44:31,935 INFO L87 Difference]: Start difference. First operand 9423 states and 10794 transitions. Second operand has 56 states, 55 states have (on average 7.4363636363636365) internal successors, (409), 50 states have internal predecessors, (409), 20 states have call successors, (79), 11 states have call predecessors, (79), 13 states have return successors, (79), 20 states have call predecessors, (79), 20 states have call successors, (79) [2023-11-28 20:46:11,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:46:11,217 INFO L93 Difference]: Finished difference Result 66059 states and 76581 transitions. [2023-11-28 20:46:11,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 526 states. [2023-11-28 20:46:11,217 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 7.4363636363636365) internal successors, (409), 50 states have internal predecessors, (409), 20 states have call successors, (79), 11 states have call predecessors, (79), 13 states have return successors, (79), 20 states have call predecessors, (79), 20 states have call successors, (79) Word has length 418 [2023-11-28 20:46:11,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:46:11,300 INFO L225 Difference]: With dead ends: 66059 [2023-11-28 20:46:11,300 INFO L226 Difference]: Without dead ends: 58579 [2023-11-28 20:46:11,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1533 GetRequests, 959 SyntacticMatches, 0 SemanticMatches, 574 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139179 ImplicationChecksByTransitivity, 44.8s TimeCoverageRelationStatistics Valid=23423, Invalid=307777, Unknown=0, NotChecked=0, Total=331200 [2023-11-28 20:46:11,326 INFO L413 NwaCegarLoop]: 1430 mSDtfsCounter, 5558 mSDsluCounter, 31442 mSDsCounter, 0 mSdLazyCounter, 42403 mSolverCounterSat, 1781 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5567 SdHoareTripleChecker+Valid, 32872 SdHoareTripleChecker+Invalid, 44184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 1781 IncrementalHoareTripleChecker+Valid, 42403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.2s IncrementalHoareTripleChecker+Time [2023-11-28 20:46:11,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5567 Valid, 32872 Invalid, 44184 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [1781 Valid, 42403 Invalid, 0 Unknown, 0 Unchecked, 24.2s Time] [2023-11-28 20:46:11,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58579 states. [2023-11-28 20:46:17,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58579 to 13776. [2023-11-28 20:46:17,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13776 states, 11209 states have (on average 1.1285574092247301) internal successors, (12650), 11315 states have internal predecessors, (12650), 1576 states have call successors, (1576), 990 states have call predecessors, (1576), 990 states have return successors, (1576), 1470 states have call predecessors, (1576), 1576 states have call successors, (1576) [2023-11-28 20:46:17,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13776 states to 13776 states and 15802 transitions. [2023-11-28 20:46:17,298 INFO L78 Accepts]: Start accepts. Automaton has 13776 states and 15802 transitions. Word has length 418 [2023-11-28 20:46:17,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:46:17,298 INFO L495 AbstractCegarLoop]: Abstraction has 13776 states and 15802 transitions. [2023-11-28 20:46:17,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 7.4363636363636365) internal successors, (409), 50 states have internal predecessors, (409), 20 states have call successors, (79), 11 states have call predecessors, (79), 13 states have return successors, (79), 20 states have call predecessors, (79), 20 states have call successors, (79) [2023-11-28 20:46:17,298 INFO L276 IsEmpty]: Start isEmpty. Operand 13776 states and 15802 transitions. [2023-11-28 20:46:17,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2023-11-28 20:46:17,313 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:46:17,313 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 13, 13, 13, 12, 12, 10, 10, 9, 9, 9, 7, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:46:17,319 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-11-28 20:46:17,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2023-11-28 20:46:17,514 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:46:17,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:46:17,514 INFO L85 PathProgramCache]: Analyzing trace with hash 173439285, now seen corresponding path program 1 times [2023-11-28 20:46:17,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:46:17,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901594419] [2023-11-28 20:46:17,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:46:17,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:46:17,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:17,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:46:17,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:17,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:46:17,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:17,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:46:17,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:17,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:46:17,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:17,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:46:17,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:17,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:46:17,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:17,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:46:17,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:17,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:46:17,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:17,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:46:17,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:17,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:46:17,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:17,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:46:17,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:17,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:46:17,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:17,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 20:46:17,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:17,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:46:17,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:17,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:46:17,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:17,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-28 20:46:17,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:17,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-11-28 20:46:17,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:17,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-11-28 20:46:17,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:17,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-11-28 20:46:17,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:17,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-11-28 20:46:17,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:17,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2023-11-28 20:46:17,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:17,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2023-11-28 20:46:17,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:17,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2023-11-28 20:46:17,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:17,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2023-11-28 20:46:17,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:17,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2023-11-28 20:46:17,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:17,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2023-11-28 20:46:17,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:17,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-28 20:46:17,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:17,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2023-11-28 20:46:17,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:17,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2023-11-28 20:46:17,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:17,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2023-11-28 20:46:17,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:17,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2023-11-28 20:46:17,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:17,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2023-11-28 20:46:17,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:17,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2023-11-28 20:46:17,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:17,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2023-11-28 20:46:17,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:17,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2023-11-28 20:46:17,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:17,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2023-11-28 20:46:17,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:17,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2023-11-28 20:46:17,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:17,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2023-11-28 20:46:17,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:17,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2023-11-28 20:46:17,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:17,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 426 [2023-11-28 20:46:17,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:17,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2023-11-28 20:46:17,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:17,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2023-11-28 20:46:17,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:17,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2023-11-28 20:46:17,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:17,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2023-11-28 20:46:17,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:17,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2023-11-28 20:46:17,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:17,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1661 backedges. 94 proven. 4 refuted. 0 times theorem prover too weak. 1563 trivial. 0 not checked. [2023-11-28 20:46:17,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:46:17,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901594419] [2023-11-28 20:46:17,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901594419] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:46:17,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431932635] [2023-11-28 20:46:17,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:46:17,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:46:17,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:46:17,794 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:46:17,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-28 20:46:18,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:18,033 INFO L262 TraceCheckSpWp]: Trace formula consists of 1762 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-28 20:46:18,038 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:46:18,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1661 backedges. 700 proven. 0 refuted. 0 times theorem prover too weak. 961 trivial. 0 not checked. [2023-11-28 20:46:18,095 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:46:18,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431932635] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:46:18,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:46:18,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 10 [2023-11-28 20:46:18,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165551038] [2023-11-28 20:46:18,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:46:18,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-28 20:46:18,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:46:18,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-28 20:46:18,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-28 20:46:18,097 INFO L87 Difference]: Start difference. First operand 13776 states and 15802 transitions. Second operand has 8 states, 8 states have (on average 25.125) internal successors, (201), 7 states have internal predecessors, (201), 3 states have call successors, (34), 3 states have call predecessors, (34), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2023-11-28 20:46:25,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:46:25,623 INFO L93 Difference]: Finished difference Result 28472 states and 32705 transitions. [2023-11-28 20:46:25,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-28 20:46:25,623 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 25.125) internal successors, (201), 7 states have internal predecessors, (201), 3 states have call successors, (34), 3 states have call predecessors, (34), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) Word has length 487 [2023-11-28 20:46:25,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:46:25,647 INFO L225 Difference]: With dead ends: 28472 [2023-11-28 20:46:25,647 INFO L226 Difference]: Without dead ends: 16906 [2023-11-28 20:46:25,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 577 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2023-11-28 20:46:25,658 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 134 mSDsluCounter, 1453 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 1794 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 20:46:25,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 1794 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 20:46:25,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16906 states. [2023-11-28 20:46:32,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16906 to 15373. [2023-11-28 20:46:32,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15373 states, 12509 states have (on average 1.1119993604604685) internal successors, (13910), 12629 states have internal predecessors, (13910), 1741 states have call successors, (1741), 1122 states have call predecessors, (1741), 1122 states have return successors, (1741), 1621 states have call predecessors, (1741), 1741 states have call successors, (1741) [2023-11-28 20:46:32,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15373 states to 15373 states and 17392 transitions. [2023-11-28 20:46:32,578 INFO L78 Accepts]: Start accepts. Automaton has 15373 states and 17392 transitions. Word has length 487 [2023-11-28 20:46:32,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:46:32,578 INFO L495 AbstractCegarLoop]: Abstraction has 15373 states and 17392 transitions. [2023-11-28 20:46:32,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 25.125) internal successors, (201), 7 states have internal predecessors, (201), 3 states have call successors, (34), 3 states have call predecessors, (34), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2023-11-28 20:46:32,578 INFO L276 IsEmpty]: Start isEmpty. Operand 15373 states and 17392 transitions. [2023-11-28 20:46:32,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2023-11-28 20:46:32,595 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:46:32,595 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 13, 13, 13, 12, 12, 10, 10, 9, 9, 9, 7, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:46:32,601 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-11-28 20:46:32,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2023-11-28 20:46:32,796 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:46:32,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:46:32,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1226692677, now seen corresponding path program 1 times [2023-11-28 20:46:32,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:46:32,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935317654] [2023-11-28 20:46:32,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:46:32,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:46:32,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:32,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:46:32,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:32,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:46:32,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:32,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:46:32,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:32,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:46:32,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:32,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:46:32,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:32,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:46:32,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:32,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:46:32,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:32,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:46:32,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:32,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:46:32,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:32,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:46:32,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:32,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:46:32,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:32,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:46:32,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:32,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 20:46:32,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:32,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:46:32,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:32,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:46:32,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:32,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-28 20:46:32,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:33,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-11-28 20:46:33,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:33,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-11-28 20:46:33,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:33,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-11-28 20:46:33,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:33,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-11-28 20:46:33,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:33,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-11-28 20:46:33,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:33,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2023-11-28 20:46:33,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:33,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2023-11-28 20:46:33,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:33,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2023-11-28 20:46:33,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:33,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2023-11-28 20:46:33,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:33,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2023-11-28 20:46:33,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:33,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2023-11-28 20:46:33,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:33,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2023-11-28 20:46:33,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:33,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-11-28 20:46:33,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:33,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2023-11-28 20:46:33,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:33,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-11-28 20:46:33,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:33,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2023-11-28 20:46:33,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:33,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2023-11-28 20:46:33,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:33,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2023-11-28 20:46:33,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:33,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2023-11-28 20:46:33,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:33,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2023-11-28 20:46:33,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:33,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2023-11-28 20:46:33,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:33,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2023-11-28 20:46:33,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:33,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2023-11-28 20:46:33,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:33,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2023-11-28 20:46:33,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:33,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2023-11-28 20:46:33,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:33,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2023-11-28 20:46:33,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:33,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2023-11-28 20:46:33,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:33,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2023-11-28 20:46:33,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:33,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2023-11-28 20:46:33,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:33,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1665 backedges. 98 proven. 8 refuted. 0 times theorem prover too weak. 1559 trivial. 0 not checked. [2023-11-28 20:46:33,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:46:33,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935317654] [2023-11-28 20:46:33,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935317654] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:46:33,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052537760] [2023-11-28 20:46:33,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:46:33,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:46:33,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:46:33,055 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:46:33,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-28 20:46:33,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:33,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 1764 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-28 20:46:33,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:46:33,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1665 backedges. 578 proven. 0 refuted. 0 times theorem prover too weak. 1087 trivial. 0 not checked. [2023-11-28 20:46:33,375 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:46:33,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052537760] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:46:33,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:46:33,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 10 [2023-11-28 20:46:33,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87417933] [2023-11-28 20:46:33,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:46:33,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-28 20:46:33,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:46:33,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-28 20:46:33,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-28 20:46:33,377 INFO L87 Difference]: Start difference. First operand 15373 states and 17392 transitions. Second operand has 9 states, 9 states have (on average 20.0) internal successors, (180), 7 states have internal predecessors, (180), 3 states have call successors, (32), 3 states have call predecessors, (32), 4 states have return successors, (32), 4 states have call predecessors, (32), 3 states have call successors, (32) [2023-11-28 20:46:41,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:46:41,795 INFO L93 Difference]: Finished difference Result 31284 states and 35607 transitions. [2023-11-28 20:46:41,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-28 20:46:41,795 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 20.0) internal successors, (180), 7 states have internal predecessors, (180), 3 states have call successors, (32), 3 states have call predecessors, (32), 4 states have return successors, (32), 4 states have call predecessors, (32), 3 states have call successors, (32) Word has length 488 [2023-11-28 20:46:41,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:46:41,823 INFO L225 Difference]: With dead ends: 31284 [2023-11-28 20:46:41,824 INFO L226 Difference]: Without dead ends: 18121 [2023-11-28 20:46:41,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 592 GetRequests, 580 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-11-28 20:46:41,835 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 129 mSDsluCounter, 1684 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1965 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 20:46:41,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 1965 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 20:46:41,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18121 states. [2023-11-28 20:46:48,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18121 to 15202. [2023-11-28 20:46:48,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15202 states, 12361 states have (on average 1.1130976458215354) internal successors, (13759), 12555 states have internal predecessors, (13759), 1695 states have call successors, (1695), 1145 states have call predecessors, (1695), 1145 states have return successors, (1695), 1501 states have call predecessors, (1695), 1695 states have call successors, (1695) [2023-11-28 20:46:49,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15202 states to 15202 states and 17149 transitions. [2023-11-28 20:46:49,018 INFO L78 Accepts]: Start accepts. Automaton has 15202 states and 17149 transitions. Word has length 488 [2023-11-28 20:46:49,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:46:49,019 INFO L495 AbstractCegarLoop]: Abstraction has 15202 states and 17149 transitions. [2023-11-28 20:46:49,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.0) internal successors, (180), 7 states have internal predecessors, (180), 3 states have call successors, (32), 3 states have call predecessors, (32), 4 states have return successors, (32), 4 states have call predecessors, (32), 3 states have call successors, (32) [2023-11-28 20:46:49,019 INFO L276 IsEmpty]: Start isEmpty. Operand 15202 states and 17149 transitions. [2023-11-28 20:46:49,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2023-11-28 20:46:49,034 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:46:49,034 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 14, 14, 14, 12, 12, 11, 10, 9, 9, 9, 7, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:46:49,039 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-11-28 20:46:49,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2023-11-28 20:46:49,234 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:46:49,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:46:49,235 INFO L85 PathProgramCache]: Analyzing trace with hash -165829499, now seen corresponding path program 1 times [2023-11-28 20:46:49,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:46:49,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968253995] [2023-11-28 20:46:49,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:46:49,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:46:49,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:50,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:46:50,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:50,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:46:50,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:50,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:46:50,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:50,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:46:50,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:50,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:46:50,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:50,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:46:50,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:50,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:46:50,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:50,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:46:50,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:50,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:46:50,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:50,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:46:50,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:50,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:46:50,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:50,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:46:50,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:50,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 20:46:50,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:50,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:46:50,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:50,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:46:50,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:50,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-28 20:46:50,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:50,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-11-28 20:46:50,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:50,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-11-28 20:46:50,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:50,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-11-28 20:46:50,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:50,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-11-28 20:46:50,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:50,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2023-11-28 20:46:50,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:50,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2023-11-28 20:46:50,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:50,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2023-11-28 20:46:50,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:50,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2023-11-28 20:46:50,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:50,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2023-11-28 20:46:50,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:50,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2023-11-28 20:46:50,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:50,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-28 20:46:50,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:50,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2023-11-28 20:46:50,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:50,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2023-11-28 20:46:50,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:50,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2023-11-28 20:46:50,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:50,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2023-11-28 20:46:50,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:50,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2023-11-28 20:46:50,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:50,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2023-11-28 20:46:50,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:50,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2023-11-28 20:46:50,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:50,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2023-11-28 20:46:50,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:50,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2023-11-28 20:46:50,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:50,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2023-11-28 20:46:50,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:50,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2023-11-28 20:46:50,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:50,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2023-11-28 20:46:50,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:50,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 418 [2023-11-28 20:46:50,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:50,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 434 [2023-11-28 20:46:50,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:50,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2023-11-28 20:46:50,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:50,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 452 [2023-11-28 20:46:50,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:50,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2023-11-28 20:46:50,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:50,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2023-11-28 20:46:50,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:50,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2023-11-28 20:46:50,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:50,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1726 backedges. 48 proven. 106 refuted. 0 times theorem prover too weak. 1572 trivial. 0 not checked. [2023-11-28 20:46:50,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:46:50,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968253995] [2023-11-28 20:46:50,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968253995] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:46:50,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910700615] [2023-11-28 20:46:50,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:46:50,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:46:50,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:46:50,450 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:46:50,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-28 20:46:50,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:46:50,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 1786 conjuncts, 69 conjunts are in the unsatisfiable core [2023-11-28 20:46:50,732 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:46:52,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1726 backedges. 304 proven. 868 refuted. 0 times theorem prover too weak. 554 trivial. 0 not checked. [2023-11-28 20:46:52,675 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:46:54,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1726 backedges. 52 proven. 184 refuted. 0 times theorem prover too weak. 1490 trivial. 0 not checked. [2023-11-28 20:46:54,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910700615] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:46:54,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 20:46:54,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 28, 23] total 66 [2023-11-28 20:46:54,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34333026] [2023-11-28 20:46:54,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 20:46:54,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-11-28 20:46:54,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:46:54,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-11-28 20:46:54,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=582, Invalid=3708, Unknown=0, NotChecked=0, Total=4290 [2023-11-28 20:46:54,522 INFO L87 Difference]: Start difference. First operand 15202 states and 17149 transitions. Second operand has 66 states, 65 states have (on average 7.476923076923077) internal successors, (486), 58 states have internal predecessors, (486), 23 states have call successors, (100), 13 states have call predecessors, (100), 17 states have return successors, (98), 25 states have call predecessors, (98), 23 states have call successors, (98) [2023-11-28 20:48:26,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:48:26,025 INFO L93 Difference]: Finished difference Result 109441 states and 126245 transitions. [2023-11-28 20:48:26,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 758 states. [2023-11-28 20:48:26,025 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 65 states have (on average 7.476923076923077) internal successors, (486), 58 states have internal predecessors, (486), 23 states have call successors, (100), 13 states have call predecessors, (100), 17 states have return successors, (98), 25 states have call predecessors, (98), 23 states have call successors, (98) Word has length 495 [2023-11-28 20:48:26,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:48:26,164 INFO L225 Difference]: With dead ends: 109441 [2023-11-28 20:48:26,164 INFO L226 Difference]: Without dead ends: 96357 [2023-11-28 20:48:26,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1937 GetRequests, 1121 SyntacticMatches, 0 SemanticMatches, 816 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294809 ImplicationChecksByTransitivity, 28.3s TimeCoverageRelationStatistics Valid=33659, Invalid=634647, Unknown=0, NotChecked=0, Total=668306 [2023-11-28 20:48:26,218 INFO L413 NwaCegarLoop]: 681 mSDtfsCounter, 8398 mSDsluCounter, 17007 mSDsCounter, 0 mSdLazyCounter, 29604 mSolverCounterSat, 2821 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8407 SdHoareTripleChecker+Valid, 17688 SdHoareTripleChecker+Invalid, 32425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2821 IncrementalHoareTripleChecker+Valid, 29604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2023-11-28 20:48:26,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8407 Valid, 17688 Invalid, 32425 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2821 Valid, 29604 Invalid, 0 Unknown, 0 Unchecked, 13.9s Time] [2023-11-28 20:48:26,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96357 states. [2023-11-28 20:48:33,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96357 to 14402. [2023-11-28 20:48:33,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14402 states, 11718 states have (on average 1.1124765318313705) internal successors, (13036), 11907 states have internal predecessors, (13036), 1594 states have call successors, (1594), 1089 states have call predecessors, (1594), 1089 states have return successors, (1594), 1405 states have call predecessors, (1594), 1594 states have call successors, (1594) [2023-11-28 20:48:33,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14402 states to 14402 states and 16224 transitions. [2023-11-28 20:48:33,882 INFO L78 Accepts]: Start accepts. Automaton has 14402 states and 16224 transitions. Word has length 495 [2023-11-28 20:48:33,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:48:33,882 INFO L495 AbstractCegarLoop]: Abstraction has 14402 states and 16224 transitions. [2023-11-28 20:48:33,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 65 states have (on average 7.476923076923077) internal successors, (486), 58 states have internal predecessors, (486), 23 states have call successors, (100), 13 states have call predecessors, (100), 17 states have return successors, (98), 25 states have call predecessors, (98), 23 states have call successors, (98) [2023-11-28 20:48:33,882 INFO L276 IsEmpty]: Start isEmpty. Operand 14402 states and 16224 transitions. [2023-11-28 20:48:33,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2023-11-28 20:48:33,897 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:48:33,897 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 13, 12, 12, 10, 9, 9, 9, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:48:33,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-11-28 20:48:34,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2023-11-28 20:48:34,098 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-28 20:48:34,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:48:34,098 INFO L85 PathProgramCache]: Analyzing trace with hash -39419416, now seen corresponding path program 1 times [2023-11-28 20:48:34,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:48:34,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355882340] [2023-11-28 20:48:34,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:48:34,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:48:34,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:48:34,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-28 20:48:34,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:48:34,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-28 20:48:34,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:48:34,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-28 20:48:34,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:48:34,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-28 20:48:34,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:48:34,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-28 20:48:34,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:48:34,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-28 20:48:34,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:48:34,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-28 20:48:34,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:48:34,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-28 20:48:34,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:48:34,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-28 20:48:34,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:48:34,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-28 20:48:34,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:48:34,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:48:34,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:48:34,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-28 20:48:34,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:48:34,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-28 20:48:34,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:48:34,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:48:34,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:48:34,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-28 20:48:34,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:48:34,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-28 20:48:34,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:48:35,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-11-28 20:48:35,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:48:35,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-11-28 20:48:35,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:48:35,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-11-28 20:48:35,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:48:35,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-11-28 20:48:35,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:48:35,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2023-11-28 20:48:35,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:48:35,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2023-11-28 20:48:35,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:48:35,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2023-11-28 20:48:35,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:48:35,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2023-11-28 20:48:35,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:48:35,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2023-11-28 20:48:35,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:48:35,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2023-11-28 20:48:35,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:48:35,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-28 20:48:35,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:48:35,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2023-11-28 20:48:35,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:48:35,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2023-11-28 20:48:35,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:48:35,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2023-11-28 20:48:35,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:48:35,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2023-11-28 20:48:35,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:48:35,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2023-11-28 20:48:35,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:48:35,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2023-11-28 20:48:35,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:48:35,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2023-11-28 20:48:35,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:48:35,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2023-11-28 20:48:35,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:48:35,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2023-11-28 20:48:35,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:48:35,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2023-11-28 20:48:35,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:48:35,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2023-11-28 20:48:35,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:48:35,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2023-11-28 20:48:35,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:48:35,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2023-11-28 20:48:35,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:48:35,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 440 [2023-11-28 20:48:35,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:48:35,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2023-11-28 20:48:35,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:48:35,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2023-11-28 20:48:35,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:48:35,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2023-11-28 20:48:35,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:48:35,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 478 [2023-11-28 20:48:35,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:48:35,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2023-11-28 20:48:35,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:48:35,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1732 backedges. 59 proven. 92 refuted. 0 times theorem prover too weak. 1581 trivial. 0 not checked. [2023-11-28 20:48:35,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:48:35,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355882340] [2023-11-28 20:48:35,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355882340] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:48:35,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550927404] [2023-11-28 20:48:35,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:48:35,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:48:35,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:48:35,106 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:48:35,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-28 20:48:35,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:48:35,379 INFO L262 TraceCheckSpWp]: Trace formula consists of 1819 conjuncts, 55 conjunts are in the unsatisfiable core [2023-11-28 20:48:35,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:48:36,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1732 backedges. 493 proven. 682 refuted. 0 times theorem prover too weak. 557 trivial. 0 not checked. [2023-11-28 20:48:36,950 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:48:38,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1732 backedges. 59 proven. 160 refuted. 0 times theorem prover too weak. 1513 trivial. 0 not checked. [2023-11-28 20:48:38,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550927404] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:48:38,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 20:48:38,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 17] total 57 [2023-11-28 20:48:38,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972213070] [2023-11-28 20:48:38,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 20:48:38,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-11-28 20:48:38,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:48:38,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-11-28 20:48:38,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=464, Invalid=2728, Unknown=0, NotChecked=0, Total=3192 [2023-11-28 20:48:38,666 INFO L87 Difference]: Start difference. First operand 14402 states and 16224 transitions. Second operand has 57 states, 56 states have (on average 9.357142857142858) internal successors, (524), 51 states have internal predecessors, (524), 24 states have call successors, (106), 13 states have call predecessors, (106), 15 states have return successors, (106), 24 states have call predecessors, (106), 24 states have call successors, (106) [2023-11-28 20:50:09,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:50:09,925 INFO L93 Difference]: Finished difference Result 87489 states and 100575 transitions. [2023-11-28 20:50:09,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 867 states. [2023-11-28 20:50:09,926 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 9.357142857142858) internal successors, (524), 51 states have internal predecessors, (524), 24 states have call successors, (106), 13 states have call predecessors, (106), 15 states have return successors, (106), 24 states have call predecessors, (106), 24 states have call successors, (106) Word has length 503 [2023-11-28 20:50:09,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:50:09,935 INFO L225 Difference]: With dead ends: 87489 [2023-11-28 20:50:09,935 INFO L226 Difference]: Without dead ends: 0 [2023-11-28 20:50:10,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2122 GetRequests, 1204 SyntacticMatches, 0 SemanticMatches, 918 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 380195 ImplicationChecksByTransitivity, 35.6s TimeCoverageRelationStatistics Valid=42938, Invalid=802542, Unknown=0, NotChecked=0, Total=845480 [2023-11-28 20:50:10,013 INFO L413 NwaCegarLoop]: 1033 mSDtfsCounter, 7069 mSDsluCounter, 21856 mSDsCounter, 0 mSdLazyCounter, 26804 mSolverCounterSat, 1846 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7069 SdHoareTripleChecker+Valid, 22889 SdHoareTripleChecker+Invalid, 28650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1846 IncrementalHoareTripleChecker+Valid, 26804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2023-11-28 20:50:10,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7069 Valid, 22889 Invalid, 28650 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1846 Valid, 26804 Invalid, 0 Unknown, 0 Unchecked, 13.4s Time] [2023-11-28 20:50:10,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-28 20:50:10,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-28 20:50:10,014 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) [2023-11-28 20:50:10,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-28 20:50:10,017 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 503 [2023-11-28 20:50:10,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:50:10,017 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-28 20:50:10,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 9.357142857142858) internal successors, (524), 51 states have internal predecessors, (524), 24 states have call successors, (106), 13 states have call predecessors, (106), 15 states have return successors, (106), 24 states have call predecessors, (106), 24 states have call successors, (106) [2023-11-28 20:50:10,017 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-28 20:50:10,017 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-28 20:50:10,019 INFO L805 garLoopResultBuilder]: Registering result SAFE for location assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-28 20:50:10,025 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-11-28 20:50:10,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb497331-a53b-42ad-891c-123d29c5d057/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:50:10,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.