./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 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_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX --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 a5deaf1c7eecf4d76182f6b98ab14efecb2cf3c3c2e7d8162af75087f90c331b --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 19:20:00,415 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 19:20:00,491 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 19:20:00,496 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 19:20:00,497 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 19:20:00,526 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 19:20:00,526 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 19:20:00,527 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 19:20:00,528 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 19:20:00,528 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 19:20:00,529 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 19:20:00,530 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 19:20:00,530 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 19:20:00,531 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 19:20:00,531 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 19:20:00,532 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 19:20:00,533 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 19:20:00,533 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 19:20:00,534 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 19:20:00,534 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 19:20:00,535 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 19:20:00,535 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 19:20:00,536 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 19:20:00,536 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 19:20:00,537 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 19:20:00,537 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 19:20:00,537 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 19:20:00,538 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 19:20:00,542 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 19:20:00,543 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 19:20:00,543 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 19:20:00,544 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 19:20:00,544 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 19:20:00,544 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 19:20:00,545 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 19:20:00,545 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 19:20:00,550 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 19:20:00,550 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 19:20:00,550 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 19:20:00,551 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 19:20:00,551 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 19:20:00,552 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 19:20:00,552 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_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5deaf1c7eecf4d76182f6b98ab14efecb2cf3c3c2e7d8162af75087f90c331b [2024-11-08 19:20:00,877 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 19:20:00,916 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 19:20:00,919 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 19:20:00,922 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 19:20:00,923 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 19:20:00,924 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c Unable to find full path for "g++" [2024-11-08 19:20:03,332 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 19:20:03,581 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 19:20:03,582 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c [2024-11-08 19:20:03,599 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/data/ca54e6317/e7e07a2296da4a51b2c66797ed93f9bd/FLAG0cd459030 [2024-11-08 19:20:03,626 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/data/ca54e6317/e7e07a2296da4a51b2c66797ed93f9bd [2024-11-08 19:20:03,630 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 19:20:03,633 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 19:20:03,636 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 19:20:03,637 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 19:20:03,645 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 19:20:03,648 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 07:20:03" (1/1) ... [2024-11-08 19:20:03,649 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ec82bf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:20:03, skipping insertion in model container [2024-11-08 19:20:03,650 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 07:20:03" (1/1) ... [2024-11-08 19:20:03,697 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 19:20:03,964 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c[6844,6857] [2024-11-08 19:20:03,969 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 19:20:03,982 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 19:20:04,035 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c[6844,6857] [2024-11-08 19:20:04,036 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 19:20:04,058 INFO L204 MainTranslator]: Completed translation [2024-11-08 19:20:04,059 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:20:04 WrapperNode [2024-11-08 19:20:04,059 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 19:20:04,061 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 19:20:04,061 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 19:20:04,061 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 19:20:04,070 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:20:04" (1/1) ... [2024-11-08 19:20:04,080 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:20:04" (1/1) ... [2024-11-08 19:20:04,120 INFO L138 Inliner]: procedures = 21, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 249 [2024-11-08 19:20:04,120 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 19:20:04,121 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 19:20:04,121 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 19:20:04,122 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 19:20:04,137 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:20:04" (1/1) ... [2024-11-08 19:20:04,137 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:20:04" (1/1) ... [2024-11-08 19:20:04,140 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:20:04" (1/1) ... [2024-11-08 19:20:04,157 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-08 19:20:04,158 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:20:04" (1/1) ... [2024-11-08 19:20:04,158 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:20:04" (1/1) ... [2024-11-08 19:20:04,165 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:20:04" (1/1) ... [2024-11-08 19:20:04,171 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:20:04" (1/1) ... [2024-11-08 19:20:04,173 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:20:04" (1/1) ... [2024-11-08 19:20:04,175 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:20:04" (1/1) ... [2024-11-08 19:20:04,179 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 19:20:04,181 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 19:20:04,181 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 19:20:04,181 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 19:20:04,182 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:20:04" (1/1) ... [2024-11-08 19:20:04,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 19:20:04,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:20:04,229 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 19:20:04,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 19:20:04,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 19:20:04,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 19:20:04,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 19:20:04,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 19:20:04,409 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 19:20:04,411 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 19:20:04,950 INFO L? ?]: Removed 32 outVars from TransFormulas that were not future-live. [2024-11-08 19:20:04,950 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 19:20:04,969 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 19:20:04,969 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 19:20:04,970 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:20:04 BoogieIcfgContainer [2024-11-08 19:20:04,970 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 19:20:04,972 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 19:20:04,973 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 19:20:04,976 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 19:20:04,977 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 07:20:03" (1/3) ... [2024-11-08 19:20:04,978 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52db3198 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 07:20:04, skipping insertion in model container [2024-11-08 19:20:04,978 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:20:04" (2/3) ... [2024-11-08 19:20:04,978 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52db3198 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 07:20:04, skipping insertion in model container [2024-11-08 19:20:04,979 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:20:04" (3/3) ... [2024-11-08 19:20:04,980 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c [2024-11-08 19:20:05,001 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 19:20:05,002 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 19:20:05,080 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 19:20:05,089 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1d579927, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 19:20:05,089 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 19:20:05,102 INFO L276 IsEmpty]: Start isEmpty. Operand has 68 states, 66 states have (on average 1.696969696969697) internal successors, (112), 67 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:05,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-08 19:20:05,115 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:20:05,116 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:20:05,117 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:20:05,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:20:05,124 INFO L85 PathProgramCache]: Analyzing trace with hash -261013996, now seen corresponding path program 1 times [2024-11-08 19:20:05,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:20:05,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158522503] [2024-11-08 19:20:05,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:20:05,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:20:05,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:05,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:20:05,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:20:05,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158522503] [2024-11-08 19:20:05,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158522503] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:20:05,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:20:05,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 19:20:05,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218697451] [2024-11-08 19:20:05,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:20:05,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 19:20:05,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:20:05,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 19:20:05,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 19:20:05,725 INFO L87 Difference]: Start difference. First operand has 68 states, 66 states have (on average 1.696969696969697) internal successors, (112), 67 states have internal predecessors, (112), 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) Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:05,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:20:05,862 INFO L93 Difference]: Finished difference Result 158 states and 256 transitions. [2024-11-08 19:20:05,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 19:20:05,866 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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) Word has length 26 [2024-11-08 19:20:05,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:20:05,875 INFO L225 Difference]: With dead ends: 158 [2024-11-08 19:20:05,875 INFO L226 Difference]: Without dead ends: 105 [2024-11-08 19:20:05,879 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 19:20:05,883 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 64 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 19:20:05,884 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 394 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 19:20:05,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-08 19:20:05,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 64. [2024-11-08 19:20:05,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.3968253968253967) internal successors, (88), 63 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:05,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 88 transitions. [2024-11-08 19:20:05,934 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 88 transitions. Word has length 26 [2024-11-08 19:20:05,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:20:05,936 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 88 transitions. [2024-11-08 19:20:05,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:05,937 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 88 transitions. [2024-11-08 19:20:05,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-08 19:20:05,938 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:20:05,938 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:20:05,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 19:20:05,939 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:20:05,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:20:05,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1862885986, now seen corresponding path program 1 times [2024-11-08 19:20:05,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:20:05,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010389799] [2024-11-08 19:20:05,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:20:05,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:20:06,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:06,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:20:06,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:20:06,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010389799] [2024-11-08 19:20:06,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010389799] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:20:06,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:20:06,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 19:20:06,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473787705] [2024-11-08 19:20:06,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:20:06,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 19:20:06,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:20:06,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 19:20:06,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 19:20:06,316 INFO L87 Difference]: Start difference. First operand 64 states and 88 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:06,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:20:06,528 INFO L93 Difference]: Finished difference Result 228 states and 348 transitions. [2024-11-08 19:20:06,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 19:20:06,531 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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) Word has length 42 [2024-11-08 19:20:06,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:20:06,533 INFO L225 Difference]: With dead ends: 228 [2024-11-08 19:20:06,533 INFO L226 Difference]: Without dead ends: 187 [2024-11-08 19:20:06,534 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-08 19:20:06,540 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 367 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 19:20:06,540 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 327 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 19:20:06,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2024-11-08 19:20:06,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 103. [2024-11-08 19:20:06,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.4705882352941178) internal successors, (150), 102 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:06,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 150 transitions. [2024-11-08 19:20:06,569 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 150 transitions. Word has length 42 [2024-11-08 19:20:06,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:20:06,570 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 150 transitions. [2024-11-08 19:20:06,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:06,571 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 150 transitions. [2024-11-08 19:20:06,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-08 19:20:06,573 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:20:06,573 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:20:06,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 19:20:06,574 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:20:06,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:20:06,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1996753116, now seen corresponding path program 1 times [2024-11-08 19:20:06,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:20:06,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758549798] [2024-11-08 19:20:06,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:20:06,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:20:06,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:06,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:20:06,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:20:06,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758549798] [2024-11-08 19:20:06,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758549798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:20:06,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:20:06,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 19:20:06,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740434102] [2024-11-08 19:20:06,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:20:06,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 19:20:06,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:20:06,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 19:20:06,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 19:20:06,982 INFO L87 Difference]: Start difference. First operand 103 states and 150 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:07,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:20:07,033 INFO L93 Difference]: Finished difference Result 111 states and 159 transitions. [2024-11-08 19:20:07,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 19:20:07,034 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) Word has length 43 [2024-11-08 19:20:07,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:20:07,036 INFO L225 Difference]: With dead ends: 111 [2024-11-08 19:20:07,036 INFO L226 Difference]: Without dead ends: 109 [2024-11-08 19:20:07,040 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 19:20:07,041 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 0 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 19:20:07,042 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 332 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 19:20:07,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-08 19:20:07,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2024-11-08 19:20:07,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.4444444444444444) internal successors, (156), 108 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:07,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 156 transitions. [2024-11-08 19:20:07,062 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 156 transitions. Word has length 43 [2024-11-08 19:20:07,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:20:07,063 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 156 transitions. [2024-11-08 19:20:07,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:07,064 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 156 transitions. [2024-11-08 19:20:07,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-08 19:20:07,065 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:20:07,067 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:20:07,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 19:20:07,067 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:20:07,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:20:07,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1822382902, now seen corresponding path program 1 times [2024-11-08 19:20:07,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:20:07,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56973650] [2024-11-08 19:20:07,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:20:07,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:20:07,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:07,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:20:07,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:20:07,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56973650] [2024-11-08 19:20:07,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56973650] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:20:07,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:20:07,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 19:20:07,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347113272] [2024-11-08 19:20:07,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:20:07,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:20:07,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:20:07,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:20:07,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:20:07,174 INFO L87 Difference]: Start difference. First operand 109 states and 156 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:07,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:20:07,196 INFO L93 Difference]: Finished difference Result 266 states and 397 transitions. [2024-11-08 19:20:07,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:20:07,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) Word has length 44 [2024-11-08 19:20:07,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:20:07,198 INFO L225 Difference]: With dead ends: 266 [2024-11-08 19:20:07,198 INFO L226 Difference]: Without dead ends: 180 [2024-11-08 19:20:07,199 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:20:07,201 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 37 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 19:20:07,201 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 150 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 19:20:07,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-11-08 19:20:07,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 178. [2024-11-08 19:20:07,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 1.4745762711864407) internal successors, (261), 177 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:07,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 261 transitions. [2024-11-08 19:20:07,216 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 261 transitions. Word has length 44 [2024-11-08 19:20:07,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:20:07,217 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 261 transitions. [2024-11-08 19:20:07,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:07,218 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 261 transitions. [2024-11-08 19:20:07,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-08 19:20:07,220 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:20:07,220 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:20:07,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 19:20:07,221 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:20:07,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:20:07,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1073079627, now seen corresponding path program 1 times [2024-11-08 19:20:07,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:20:07,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602963544] [2024-11-08 19:20:07,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:20:07,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:20:07,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:07,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:20:07,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:20:07,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602963544] [2024-11-08 19:20:07,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602963544] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:20:07,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:20:07,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 19:20:07,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829960844] [2024-11-08 19:20:07,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:20:07,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:20:07,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:20:07,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:20:07,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:20:07,361 INFO L87 Difference]: Start difference. First operand 178 states and 261 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:07,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:20:07,400 INFO L93 Difference]: Finished difference Result 337 states and 503 transitions. [2024-11-08 19:20:07,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:20:07,402 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) Word has length 44 [2024-11-08 19:20:07,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:20:07,407 INFO L225 Difference]: With dead ends: 337 [2024-11-08 19:20:07,407 INFO L226 Difference]: Without dead ends: 251 [2024-11-08 19:20:07,408 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:20:07,410 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 52 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 19:20:07,411 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 193 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 19:20:07,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2024-11-08 19:20:07,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 249. [2024-11-08 19:20:07,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 248 states have (on average 1.4758064516129032) internal successors, (366), 248 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:07,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 366 transitions. [2024-11-08 19:20:07,450 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 366 transitions. Word has length 44 [2024-11-08 19:20:07,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:20:07,451 INFO L471 AbstractCegarLoop]: Abstraction has 249 states and 366 transitions. [2024-11-08 19:20:07,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:07,452 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 366 transitions. [2024-11-08 19:20:07,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-08 19:20:07,457 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:20:07,458 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:20:07,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 19:20:07,458 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:20:07,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:20:07,459 INFO L85 PathProgramCache]: Analyzing trace with hash -374815595, now seen corresponding path program 1 times [2024-11-08 19:20:07,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:20:07,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079515262] [2024-11-08 19:20:07,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:20:07,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:20:07,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:07,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:20:07,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:20:07,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079515262] [2024-11-08 19:20:07,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079515262] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:20:07,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:20:07,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 19:20:07,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621283347] [2024-11-08 19:20:07,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:20:07,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:20:07,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:20:07,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:20:07,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:20:07,622 INFO L87 Difference]: Start difference. First operand 249 states and 366 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:07,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:20:07,668 INFO L93 Difference]: Finished difference Result 647 states and 962 transitions. [2024-11-08 19:20:07,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:20:07,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) Word has length 45 [2024-11-08 19:20:07,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:20:07,675 INFO L225 Difference]: With dead ends: 647 [2024-11-08 19:20:07,675 INFO L226 Difference]: Without dead ends: 424 [2024-11-08 19:20:07,677 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:20:07,680 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 44 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 19:20:07,682 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 180 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 19:20:07,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2024-11-08 19:20:07,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 422. [2024-11-08 19:20:07,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 421 states have (on average 1.4608076009501187) internal successors, (615), 421 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:07,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 615 transitions. [2024-11-08 19:20:07,713 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 615 transitions. Word has length 45 [2024-11-08 19:20:07,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:20:07,714 INFO L471 AbstractCegarLoop]: Abstraction has 422 states and 615 transitions. [2024-11-08 19:20:07,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:07,715 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 615 transitions. [2024-11-08 19:20:07,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-08 19:20:07,716 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:20:07,717 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:20:07,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 19:20:07,717 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:20:07,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:20:07,718 INFO L85 PathProgramCache]: Analyzing trace with hash 2119462773, now seen corresponding path program 1 times [2024-11-08 19:20:07,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:20:07,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819509360] [2024-11-08 19:20:07,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:20:07,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:20:07,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:07,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:20:07,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:20:07,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819509360] [2024-11-08 19:20:07,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819509360] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:20:07,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:20:07,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 19:20:07,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530559431] [2024-11-08 19:20:07,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:20:07,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:20:07,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:20:07,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:20:07,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:20:07,865 INFO L87 Difference]: Start difference. First operand 422 states and 615 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:07,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:20:07,904 INFO L93 Difference]: Finished difference Result 1118 states and 1625 transitions. [2024-11-08 19:20:07,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:20:07,905 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) Word has length 45 [2024-11-08 19:20:07,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:20:07,908 INFO L225 Difference]: With dead ends: 1118 [2024-11-08 19:20:07,908 INFO L226 Difference]: Without dead ends: 722 [2024-11-08 19:20:07,911 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:20:07,912 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 48 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 19:20:07,916 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 193 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 19:20:07,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2024-11-08 19:20:07,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 720. [2024-11-08 19:20:07,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 719 states have (on average 1.4228094575799721) internal successors, (1023), 719 states have internal predecessors, (1023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:07,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 1023 transitions. [2024-11-08 19:20:07,950 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 1023 transitions. Word has length 45 [2024-11-08 19:20:07,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:20:07,951 INFO L471 AbstractCegarLoop]: Abstraction has 720 states and 1023 transitions. [2024-11-08 19:20:07,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:07,951 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 1023 transitions. [2024-11-08 19:20:07,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-08 19:20:07,955 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:20:07,955 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:20:07,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 19:20:07,956 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:20:07,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:20:07,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1760065961, now seen corresponding path program 1 times [2024-11-08 19:20:07,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:20:07,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222702235] [2024-11-08 19:20:07,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:20:07,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:20:08,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:08,146 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:20:08,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:20:08,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222702235] [2024-11-08 19:20:08,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222702235] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:20:08,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:20:08,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 19:20:08,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608394445] [2024-11-08 19:20:08,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:20:08,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:20:08,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:20:08,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:20:08,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:20:08,150 INFO L87 Difference]: Start difference. First operand 720 states and 1023 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:08,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:20:08,193 INFO L93 Difference]: Finished difference Result 1416 states and 2021 transitions. [2024-11-08 19:20:08,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:20:08,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) Word has length 64 [2024-11-08 19:20:08,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:20:08,198 INFO L225 Difference]: With dead ends: 1416 [2024-11-08 19:20:08,200 INFO L226 Difference]: Without dead ends: 722 [2024-11-08 19:20:08,202 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:20:08,203 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 41 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 19:20:08,203 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 185 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 19:20:08,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2024-11-08 19:20:08,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 720. [2024-11-08 19:20:08,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 719 states have (on average 1.4061196105702365) internal successors, (1011), 719 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:08,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 1011 transitions. [2024-11-08 19:20:08,258 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 1011 transitions. Word has length 64 [2024-11-08 19:20:08,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:20:08,259 INFO L471 AbstractCegarLoop]: Abstraction has 720 states and 1011 transitions. [2024-11-08 19:20:08,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:08,259 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 1011 transitions. [2024-11-08 19:20:08,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-08 19:20:08,260 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:20:08,261 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:20:08,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 19:20:08,261 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:20:08,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:20:08,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1049877846, now seen corresponding path program 1 times [2024-11-08 19:20:08,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:20:08,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283479778] [2024-11-08 19:20:08,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:20:08,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:20:08,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:08,391 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:20:08,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:20:08,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283479778] [2024-11-08 19:20:08,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283479778] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:20:08,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:20:08,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 19:20:08,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969711212] [2024-11-08 19:20:08,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:20:08,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:20:08,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:20:08,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:20:08,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:20:08,395 INFO L87 Difference]: Start difference. First operand 720 states and 1011 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:08,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:20:08,425 INFO L93 Difference]: Finished difference Result 1070 states and 1505 transitions. [2024-11-08 19:20:08,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:20:08,429 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) Word has length 64 [2024-11-08 19:20:08,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:20:08,431 INFO L225 Difference]: With dead ends: 1070 [2024-11-08 19:20:08,431 INFO L226 Difference]: Without dead ends: 376 [2024-11-08 19:20:08,432 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:20:08,434 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 35 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 19:20:08,437 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 166 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 19:20:08,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2024-11-08 19:20:08,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 374. [2024-11-08 19:20:08,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 373 states have (on average 1.3753351206434317) internal successors, (513), 373 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:08,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 513 transitions. [2024-11-08 19:20:08,463 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 513 transitions. Word has length 64 [2024-11-08 19:20:08,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:20:08,464 INFO L471 AbstractCegarLoop]: Abstraction has 374 states and 513 transitions. [2024-11-08 19:20:08,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:08,464 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 513 transitions. [2024-11-08 19:20:08,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-08 19:20:08,465 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:20:08,466 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 19:20:08,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 19:20:08,466 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:20:08,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:20:08,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1436126165, now seen corresponding path program 1 times [2024-11-08 19:20:08,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:20:08,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126914898] [2024-11-08 19:20:08,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:20:08,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:20:08,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:08,774 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 19:20:08,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:20:08,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126914898] [2024-11-08 19:20:08,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126914898] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:20:08,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606199340] [2024-11-08 19:20:08,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:20:08,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:20:08,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:20:08,780 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:20:08,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 19:20:08,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:08,955 INFO L255 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-08 19:20:08,966 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:20:09,584 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:20:09,585 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:20:10,354 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:20:10,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606199340] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:20:10,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:20:10,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 8] total 14 [2024-11-08 19:20:10,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144275375] [2024-11-08 19:20:10,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:20:10,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-08 19:20:10,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:20:10,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-08 19:20:10,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-11-08 19:20:10,357 INFO L87 Difference]: Start difference. First operand 374 states and 513 transitions. Second operand has 14 states, 14 states have (on average 12.928571428571429) internal successors, (181), 14 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:11,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:20:11,548 INFO L93 Difference]: Finished difference Result 1682 states and 2341 transitions. [2024-11-08 19:20:11,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-08 19:20:11,549 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 12.928571428571429) internal successors, (181), 14 states have internal predecessors, (181), 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) Word has length 64 [2024-11-08 19:20:11,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:20:11,555 INFO L225 Difference]: With dead ends: 1682 [2024-11-08 19:20:11,555 INFO L226 Difference]: Without dead ends: 1440 [2024-11-08 19:20:11,557 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=400, Invalid=1492, Unknown=0, NotChecked=0, Total=1892 [2024-11-08 19:20:11,558 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 784 mSDsluCounter, 909 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 1037 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 19:20:11,558 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [784 Valid, 1037 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 19:20:11,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1440 states. [2024-11-08 19:20:11,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1440 to 1320. [2024-11-08 19:20:11,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1320 states, 1319 states have (on average 1.3790750568612584) internal successors, (1819), 1319 states have internal predecessors, (1819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:11,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 1819 transitions. [2024-11-08 19:20:11,609 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 1819 transitions. Word has length 64 [2024-11-08 19:20:11,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:20:11,610 INFO L471 AbstractCegarLoop]: Abstraction has 1320 states and 1819 transitions. [2024-11-08 19:20:11,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.928571428571429) internal successors, (181), 14 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:11,610 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 1819 transitions. [2024-11-08 19:20:11,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-08 19:20:11,611 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:20:11,611 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 19:20:11,637 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 19:20:11,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-08 19:20:11,812 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:20:11,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:20:11,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1012356628, now seen corresponding path program 1 times [2024-11-08 19:20:11,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:20:11,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384436050] [2024-11-08 19:20:11,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:20:11,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:20:11,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:11,989 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 19:20:11,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:20:11,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384436050] [2024-11-08 19:20:11,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384436050] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:20:11,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:20:11,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 19:20:11,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113774953] [2024-11-08 19:20:11,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:20:11,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 19:20:11,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:20:11,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 19:20:11,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 19:20:11,992 INFO L87 Difference]: Start difference. First operand 1320 states and 1819 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:12,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:20:12,126 INFO L93 Difference]: Finished difference Result 3268 states and 4541 transitions. [2024-11-08 19:20:12,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 19:20:12,127 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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) Word has length 65 [2024-11-08 19:20:12,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:20:12,136 INFO L225 Difference]: With dead ends: 3268 [2024-11-08 19:20:12,136 INFO L226 Difference]: Without dead ends: 2584 [2024-11-08 19:20:12,138 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-08 19:20:12,139 INFO L432 NwaCegarLoop]: 151 mSDtfsCounter, 229 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 19:20:12,139 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 360 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 19:20:12,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2584 states. [2024-11-08 19:20:12,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2584 to 1960. [2024-11-08 19:20:12,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1960 states, 1959 states have (on average 1.375701888718734) internal successors, (2695), 1959 states have internal predecessors, (2695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:12,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1960 states to 1960 states and 2695 transitions. [2024-11-08 19:20:12,259 INFO L78 Accepts]: Start accepts. Automaton has 1960 states and 2695 transitions. Word has length 65 [2024-11-08 19:20:12,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:20:12,259 INFO L471 AbstractCegarLoop]: Abstraction has 1960 states and 2695 transitions. [2024-11-08 19:20:12,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:12,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1960 states and 2695 transitions. [2024-11-08 19:20:12,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-08 19:20:12,262 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:20:12,264 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 19:20:12,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-08 19:20:12,265 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:20:12,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:20:12,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1102988718, now seen corresponding path program 1 times [2024-11-08 19:20:12,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:20:12,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902870107] [2024-11-08 19:20:12,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:20:12,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:20:12,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:12,459 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-08 19:20:12,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:20:12,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902870107] [2024-11-08 19:20:12,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902870107] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:20:12,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:20:12,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 19:20:12,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925613569] [2024-11-08 19:20:12,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:20:12,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 19:20:12,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:20:12,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 19:20:12,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 19:20:12,463 INFO L87 Difference]: Start difference. First operand 1960 states and 2695 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:12,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:20:12,628 INFO L93 Difference]: Finished difference Result 3908 states and 5417 transitions. [2024-11-08 19:20:12,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 19:20:12,629 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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) Word has length 65 [2024-11-08 19:20:12,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:20:12,640 INFO L225 Difference]: With dead ends: 3908 [2024-11-08 19:20:12,640 INFO L226 Difference]: Without dead ends: 3224 [2024-11-08 19:20:12,642 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-08 19:20:12,642 INFO L432 NwaCegarLoop]: 153 mSDtfsCounter, 226 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 19:20:12,643 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 400 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 19:20:12,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3224 states. [2024-11-08 19:20:12,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3224 to 2600. [2024-11-08 19:20:12,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2600 states, 2599 states have (on average 1.3739899961523663) internal successors, (3571), 2599 states have internal predecessors, (3571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:12,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2600 states to 2600 states and 3571 transitions. [2024-11-08 19:20:12,749 INFO L78 Accepts]: Start accepts. Automaton has 2600 states and 3571 transitions. Word has length 65 [2024-11-08 19:20:12,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:20:12,749 INFO L471 AbstractCegarLoop]: Abstraction has 2600 states and 3571 transitions. [2024-11-08 19:20:12,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:12,750 INFO L276 IsEmpty]: Start isEmpty. Operand 2600 states and 3571 transitions. [2024-11-08 19:20:12,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-08 19:20:12,751 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:20:12,751 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 19:20:12,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 19:20:12,751 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:20:12,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:20:12,752 INFO L85 PathProgramCache]: Analyzing trace with hash -642711567, now seen corresponding path program 1 times [2024-11-08 19:20:12,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:20:12,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345215414] [2024-11-08 19:20:12,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:20:12,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:20:12,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:12,882 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-08 19:20:12,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:20:12,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345215414] [2024-11-08 19:20:12,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345215414] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:20:12,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:20:12,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 19:20:12,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220469223] [2024-11-08 19:20:12,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:20:12,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 19:20:12,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:20:12,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 19:20:12,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 19:20:12,885 INFO L87 Difference]: Start difference. First operand 2600 states and 3571 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:13,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:20:13,074 INFO L93 Difference]: Finished difference Result 4388 states and 6061 transitions. [2024-11-08 19:20:13,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 19:20:13,074 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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) Word has length 65 [2024-11-08 19:20:13,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:20:13,088 INFO L225 Difference]: With dead ends: 4388 [2024-11-08 19:20:13,088 INFO L226 Difference]: Without dead ends: 3806 [2024-11-08 19:20:13,091 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-08 19:20:13,093 INFO L432 NwaCegarLoop]: 150 mSDtfsCounter, 222 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 19:20:13,093 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 365 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 19:20:13,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3806 states. [2024-11-08 19:20:13,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3806 to 3182. [2024-11-08 19:20:13,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3182 states, 3181 states have (on average 1.3715812637535367) internal successors, (4363), 3181 states have internal predecessors, (4363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:13,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3182 states to 3182 states and 4363 transitions. [2024-11-08 19:20:13,246 INFO L78 Accepts]: Start accepts. Automaton has 3182 states and 4363 transitions. Word has length 65 [2024-11-08 19:20:13,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:20:13,247 INFO L471 AbstractCegarLoop]: Abstraction has 3182 states and 4363 transitions. [2024-11-08 19:20:13,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:13,247 INFO L276 IsEmpty]: Start isEmpty. Operand 3182 states and 4363 transitions. [2024-11-08 19:20:13,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-08 19:20:13,248 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:20:13,248 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 19:20:13,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 19:20:13,249 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:20:13,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:20:13,249 INFO L85 PathProgramCache]: Analyzing trace with hash -136717824, now seen corresponding path program 1 times [2024-11-08 19:20:13,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:20:13,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67012450] [2024-11-08 19:20:13,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:20:13,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:20:13,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:13,368 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:20:13,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:20:13,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67012450] [2024-11-08 19:20:13,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67012450] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:20:13,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:20:13,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 19:20:13,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405383030] [2024-11-08 19:20:13,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:20:13,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:20:13,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:20:13,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:20:13,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:20:13,371 INFO L87 Difference]: Start difference. First operand 3182 states and 4363 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:13,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:20:13,439 INFO L93 Difference]: Finished difference Result 4623 states and 6314 transitions. [2024-11-08 19:20:13,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:20:13,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) Word has length 68 [2024-11-08 19:20:13,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:20:13,444 INFO L225 Difference]: With dead ends: 4623 [2024-11-08 19:20:13,445 INFO L226 Difference]: Without dead ends: 1467 [2024-11-08 19:20:13,448 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:20:13,448 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 21 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 19:20:13,449 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 156 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 19:20:13,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1467 states. [2024-11-08 19:20:13,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1467 to 1165. [2024-11-08 19:20:13,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1165 states, 1164 states have (on average 1.3625429553264605) internal successors, (1586), 1164 states have internal predecessors, (1586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:13,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1586 transitions. [2024-11-08 19:20:13,502 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1586 transitions. Word has length 68 [2024-11-08 19:20:13,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:20:13,502 INFO L471 AbstractCegarLoop]: Abstraction has 1165 states and 1586 transitions. [2024-11-08 19:20:13,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:13,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1586 transitions. [2024-11-08 19:20:13,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-08 19:20:13,503 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:20:13,504 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 19:20:13,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-08 19:20:13,504 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:20:13,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:20:13,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1850688511, now seen corresponding path program 1 times [2024-11-08 19:20:13,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:20:13,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288582908] [2024-11-08 19:20:13,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:20:13,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:20:13,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:14,178 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:20:14,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:20:14,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288582908] [2024-11-08 19:20:14,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288582908] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:20:14,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916421209] [2024-11-08 19:20:14,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:20:14,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:20:14,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:20:14,181 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:20:14,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 19:20:14,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:14,327 INFO L255 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-08 19:20:14,331 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:20:14,954 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:20:14,954 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:20:16,046 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:20:16,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916421209] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:20:16,047 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:20:16,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-08 19:20:16,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834042415] [2024-11-08 19:20:16,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:20:16,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-08 19:20:16,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:20:16,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-08 19:20:16,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2024-11-08 19:20:16,052 INFO L87 Difference]: Start difference. First operand 1165 states and 1586 transitions. Second operand has 21 states, 21 states have (on average 6.857142857142857) internal successors, (144), 20 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:16,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:20:16,880 INFO L93 Difference]: Finished difference Result 3716 states and 5099 transitions. [2024-11-08 19:20:16,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-08 19:20:16,881 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 6.857142857142857) internal successors, (144), 20 states have internal predecessors, (144), 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) Word has length 68 [2024-11-08 19:20:16,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:20:16,889 INFO L225 Difference]: With dead ends: 3716 [2024-11-08 19:20:16,889 INFO L226 Difference]: Without dead ends: 2645 [2024-11-08 19:20:16,893 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=266, Invalid=790, Unknown=0, NotChecked=0, Total=1056 [2024-11-08 19:20:16,894 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 906 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 906 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 19:20:16,895 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [906 Valid, 587 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 19:20:16,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2645 states. [2024-11-08 19:20:16,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2645 to 2374. [2024-11-08 19:20:16,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2374 states, 2373 states have (on average 1.3392330383480826) internal successors, (3178), 2373 states have internal predecessors, (3178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:17,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2374 states to 2374 states and 3178 transitions. [2024-11-08 19:20:17,000 INFO L78 Accepts]: Start accepts. Automaton has 2374 states and 3178 transitions. Word has length 68 [2024-11-08 19:20:17,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:20:17,001 INFO L471 AbstractCegarLoop]: Abstraction has 2374 states and 3178 transitions. [2024-11-08 19:20:17,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.857142857142857) internal successors, (144), 20 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:17,001 INFO L276 IsEmpty]: Start isEmpty. Operand 2374 states and 3178 transitions. [2024-11-08 19:20:17,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-08 19:20:17,002 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:20:17,002 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 19:20:17,025 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 19:20:17,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-08 19:20:17,207 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:20:17,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:20:17,209 INFO L85 PathProgramCache]: Analyzing trace with hash 328933439, now seen corresponding path program 1 times [2024-11-08 19:20:17,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:20:17,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547899072] [2024-11-08 19:20:17,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:20:17,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:20:17,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:17,800 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:20:17,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:20:17,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547899072] [2024-11-08 19:20:17,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547899072] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:20:17,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417728048] [2024-11-08 19:20:17,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:20:17,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:20:17,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:20:17,803 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:20:17,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 19:20:17,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:17,926 INFO L255 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-08 19:20:17,929 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:20:18,499 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:20:18,500 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:20:19,457 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:20:19,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417728048] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:20:19,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:20:19,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-08 19:20:19,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213444461] [2024-11-08 19:20:19,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:20:19,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-08 19:20:19,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:20:19,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-08 19:20:19,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2024-11-08 19:20:19,460 INFO L87 Difference]: Start difference. First operand 2374 states and 3178 transitions. Second operand has 21 states, 21 states have (on average 7.190476190476191) internal successors, (151), 20 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:20,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:20:20,147 INFO L93 Difference]: Finished difference Result 8362 states and 11325 transitions. [2024-11-08 19:20:20,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 19:20:20,148 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 7.190476190476191) internal successors, (151), 20 states have internal predecessors, (151), 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) Word has length 68 [2024-11-08 19:20:20,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:20:20,166 INFO L225 Difference]: With dead ends: 8362 [2024-11-08 19:20:20,166 INFO L226 Difference]: Without dead ends: 6259 [2024-11-08 19:20:20,170 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=224, Invalid=646, Unknown=0, NotChecked=0, Total=870 [2024-11-08 19:20:20,170 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 822 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 19:20:20,171 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [822 Valid, 577 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 19:20:20,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6259 states. [2024-11-08 19:20:20,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6259 to 6048. [2024-11-08 19:20:20,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6048 states, 6047 states have (on average 1.3261121217132463) internal successors, (8019), 6047 states have internal predecessors, (8019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:20,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6048 states to 6048 states and 8019 transitions. [2024-11-08 19:20:20,376 INFO L78 Accepts]: Start accepts. Automaton has 6048 states and 8019 transitions. Word has length 68 [2024-11-08 19:20:20,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:20:20,377 INFO L471 AbstractCegarLoop]: Abstraction has 6048 states and 8019 transitions. [2024-11-08 19:20:20,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.190476190476191) internal successors, (151), 20 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:20,377 INFO L276 IsEmpty]: Start isEmpty. Operand 6048 states and 8019 transitions. [2024-11-08 19:20:20,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-08 19:20:20,378 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:20:20,379 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 19:20:20,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-08 19:20:20,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-08 19:20:20,583 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:20:20,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:20:20,584 INFO L85 PathProgramCache]: Analyzing trace with hash 281723391, now seen corresponding path program 1 times [2024-11-08 19:20:20,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:20:20,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949793072] [2024-11-08 19:20:20,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:20:20,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:20:20,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:21,326 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:20:21,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:20:21,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949793072] [2024-11-08 19:20:21,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949793072] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:20:21,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461463650] [2024-11-08 19:20:21,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:20:21,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:20:21,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:20:21,330 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:20:21,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 19:20:21,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:21,473 INFO L255 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-08 19:20:21,475 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:20:21,989 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:20:21,990 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:20:23,392 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:20:23,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461463650] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:20:23,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:20:23,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2024-11-08 19:20:23,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620874355] [2024-11-08 19:20:23,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:20:23,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-08 19:20:23,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:20:23,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-08 19:20:23,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2024-11-08 19:20:23,397 INFO L87 Difference]: Start difference. First operand 6048 states and 8019 transitions. Second operand has 22 states, 22 states have (on average 6.2727272727272725) internal successors, (138), 21 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:24,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:20:24,244 INFO L93 Difference]: Finished difference Result 19064 states and 25198 transitions. [2024-11-08 19:20:24,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 19:20:24,245 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.2727272727272725) internal successors, (138), 21 states have internal predecessors, (138), 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) Word has length 68 [2024-11-08 19:20:24,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:20:24,288 INFO L225 Difference]: With dead ends: 19064 [2024-11-08 19:20:24,288 INFO L226 Difference]: Without dead ends: 13595 [2024-11-08 19:20:24,298 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=270, Invalid=722, Unknown=0, NotChecked=0, Total=992 [2024-11-08 19:20:24,299 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 921 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 19:20:24,299 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [921 Valid, 484 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 19:20:24,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13595 states. [2024-11-08 19:20:24,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13595 to 13035. [2024-11-08 19:20:24,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13035 states, 13034 states have (on average 1.3033604419211293) internal successors, (16988), 13034 states have internal predecessors, (16988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:24,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13035 states to 13035 states and 16988 transitions. [2024-11-08 19:20:24,871 INFO L78 Accepts]: Start accepts. Automaton has 13035 states and 16988 transitions. Word has length 68 [2024-11-08 19:20:24,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:20:24,872 INFO L471 AbstractCegarLoop]: Abstraction has 13035 states and 16988 transitions. [2024-11-08 19:20:24,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.2727272727272725) internal successors, (138), 21 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:24,872 INFO L276 IsEmpty]: Start isEmpty. Operand 13035 states and 16988 transitions. [2024-11-08 19:20:24,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-08 19:20:24,874 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:20:24,874 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 19:20:24,898 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 19:20:25,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-08 19:20:25,075 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:20:25,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:20:25,076 INFO L85 PathProgramCache]: Analyzing trace with hash 388196425, now seen corresponding path program 1 times [2024-11-08 19:20:25,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:20:25,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937163607] [2024-11-08 19:20:25,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:20:25,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:20:25,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:25,146 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:20:25,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:20:25,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937163607] [2024-11-08 19:20:25,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937163607] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:20:25,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:20:25,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 19:20:25,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616051036] [2024-11-08 19:20:25,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:20:25,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:20:25,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:20:25,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:20:25,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:20:25,149 INFO L87 Difference]: Start difference. First operand 13035 states and 16988 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:25,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:20:25,814 INFO L93 Difference]: Finished difference Result 29921 states and 38876 transitions. [2024-11-08 19:20:25,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:20:25,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) Word has length 69 [2024-11-08 19:20:25,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:20:25,861 INFO L225 Difference]: With dead ends: 29921 [2024-11-08 19:20:25,862 INFO L226 Difference]: Without dead ends: 17359 [2024-11-08 19:20:25,877 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:20:25,877 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 40 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 19:20:25,878 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 168 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 19:20:25,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17359 states. [2024-11-08 19:20:26,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17359 to 17357. [2024-11-08 19:20:26,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17357 states, 17356 states have (on average 1.281343627563955) internal successors, (22239), 17356 states have internal predecessors, (22239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:26,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17357 states to 17357 states and 22239 transitions. [2024-11-08 19:20:26,628 INFO L78 Accepts]: Start accepts. Automaton has 17357 states and 22239 transitions. Word has length 69 [2024-11-08 19:20:26,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:20:26,629 INFO L471 AbstractCegarLoop]: Abstraction has 17357 states and 22239 transitions. [2024-11-08 19:20:26,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:26,631 INFO L276 IsEmpty]: Start isEmpty. Operand 17357 states and 22239 transitions. [2024-11-08 19:20:26,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-08 19:20:26,633 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:20:26,633 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 19:20:26,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-08 19:20:26,634 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:20:26,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:20:26,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1197855031, now seen corresponding path program 1 times [2024-11-08 19:20:26,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:20:26,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754811991] [2024-11-08 19:20:26,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:20:26,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:20:26,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:26,765 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:20:26,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:20:26,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754811991] [2024-11-08 19:20:26,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754811991] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:20:26,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:20:26,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 19:20:26,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809046893] [2024-11-08 19:20:26,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:20:26,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:20:26,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:20:26,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:20:26,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:20:26,769 INFO L87 Difference]: Start difference. First operand 17357 states and 22239 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:27,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:20:27,552 INFO L93 Difference]: Finished difference Result 40841 states and 51990 transitions. [2024-11-08 19:20:27,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:20:27,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) Word has length 69 [2024-11-08 19:20:27,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:20:27,605 INFO L225 Difference]: With dead ends: 40841 [2024-11-08 19:20:27,606 INFO L226 Difference]: Without dead ends: 24789 [2024-11-08 19:20:27,620 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:20:27,621 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 33 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 19:20:27,621 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 197 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 19:20:27,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24789 states. [2024-11-08 19:20:28,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24789 to 24787. [2024-11-08 19:20:28,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24787 states, 24786 states have (on average 1.2443718228031952) internal successors, (30843), 24786 states have internal predecessors, (30843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:28,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24787 states to 24787 states and 30843 transitions. [2024-11-08 19:20:28,698 INFO L78 Accepts]: Start accepts. Automaton has 24787 states and 30843 transitions. Word has length 69 [2024-11-08 19:20:28,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:20:28,698 INFO L471 AbstractCegarLoop]: Abstraction has 24787 states and 30843 transitions. [2024-11-08 19:20:28,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:28,699 INFO L276 IsEmpty]: Start isEmpty. Operand 24787 states and 30843 transitions. [2024-11-08 19:20:28,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-08 19:20:28,703 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:20:28,703 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 19:20:28,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-08 19:20:28,703 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:20:28,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:20:28,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1418124061, now seen corresponding path program 1 times [2024-11-08 19:20:28,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:20:28,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745269862] [2024-11-08 19:20:28,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:20:28,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:20:28,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:28,787 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:20:28,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:20:28,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745269862] [2024-11-08 19:20:28,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745269862] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:20:28,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:20:28,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 19:20:28,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648017496] [2024-11-08 19:20:28,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:20:28,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:20:28,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:20:28,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:20:28,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:20:28,792 INFO L87 Difference]: Start difference. First operand 24787 states and 30843 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:29,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:20:29,588 INFO L93 Difference]: Finished difference Result 56400 states and 69616 transitions. [2024-11-08 19:20:29,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:20:29,589 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) Word has length 69 [2024-11-08 19:20:29,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:20:29,652 INFO L225 Difference]: With dead ends: 56400 [2024-11-08 19:20:29,652 INFO L226 Difference]: Without dead ends: 33169 [2024-11-08 19:20:29,674 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:20:29,675 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 37 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 19:20:29,676 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 176 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 19:20:29,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33169 states. [2024-11-08 19:20:30,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33169 to 33167. [2024-11-08 19:20:30,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33167 states, 33166 states have (on average 1.2053006090574685) internal successors, (39975), 33166 states have internal predecessors, (39975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:31,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33167 states to 33167 states and 39975 transitions. [2024-11-08 19:20:31,032 INFO L78 Accepts]: Start accepts. Automaton has 33167 states and 39975 transitions. Word has length 69 [2024-11-08 19:20:31,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:20:31,032 INFO L471 AbstractCegarLoop]: Abstraction has 33167 states and 39975 transitions. [2024-11-08 19:20:31,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:31,033 INFO L276 IsEmpty]: Start isEmpty. Operand 33167 states and 39975 transitions. [2024-11-08 19:20:31,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-08 19:20:31,037 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:20:31,038 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 19:20:31,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-08 19:20:31,038 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:20:31,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:20:31,039 INFO L85 PathProgramCache]: Analyzing trace with hash 648827371, now seen corresponding path program 1 times [2024-11-08 19:20:31,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:20:31,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506670322] [2024-11-08 19:20:31,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:20:31,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:20:31,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:31,102 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:20:31,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:20:31,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506670322] [2024-11-08 19:20:31,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506670322] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:20:31,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:20:31,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 19:20:31,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927884665] [2024-11-08 19:20:31,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:20:31,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:20:31,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:20:31,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:20:31,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:20:31,105 INFO L87 Difference]: Start difference. First operand 33167 states and 39975 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:31,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:20:31,998 INFO L93 Difference]: Finished difference Result 48482 states and 58451 transitions. [2024-11-08 19:20:31,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:20:31,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) Word has length 69 [2024-11-08 19:20:31,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:20:32,051 INFO L225 Difference]: With dead ends: 48482 [2024-11-08 19:20:32,051 INFO L226 Difference]: Without dead ends: 29731 [2024-11-08 19:20:32,068 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:20:32,069 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 34 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 19:20:32,070 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 209 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 19:20:32,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29731 states. [2024-11-08 19:20:33,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29731 to 28177. [2024-11-08 19:20:33,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28177 states, 28176 states have (on average 1.1955210107893242) internal successors, (33685), 28176 states have internal predecessors, (33685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:33,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28177 states to 28177 states and 33685 transitions. [2024-11-08 19:20:33,344 INFO L78 Accepts]: Start accepts. Automaton has 28177 states and 33685 transitions. Word has length 69 [2024-11-08 19:20:33,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:20:33,344 INFO L471 AbstractCegarLoop]: Abstraction has 28177 states and 33685 transitions. [2024-11-08 19:20:33,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:33,345 INFO L276 IsEmpty]: Start isEmpty. Operand 28177 states and 33685 transitions. [2024-11-08 19:20:33,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-08 19:20:33,349 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:20:33,350 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 19:20:33,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-08 19:20:33,350 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:20:33,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:20:33,351 INFO L85 PathProgramCache]: Analyzing trace with hash -459379573, now seen corresponding path program 1 times [2024-11-08 19:20:33,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:20:33,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735098674] [2024-11-08 19:20:33,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:20:33,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:20:33,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:33,435 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:20:33,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:20:33,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735098674] [2024-11-08 19:20:33,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735098674] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:20:33,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:20:33,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 19:20:33,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581734203] [2024-11-08 19:20:33,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:20:33,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:20:33,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:20:33,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:20:33,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:20:33,441 INFO L87 Difference]: Start difference. First operand 28177 states and 33685 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:33,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:20:33,985 INFO L93 Difference]: Finished difference Result 41831 states and 49895 transitions. [2024-11-08 19:20:33,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:20:33,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) Word has length 69 [2024-11-08 19:20:33,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:20:34,025 INFO L225 Difference]: With dead ends: 41831 [2024-11-08 19:20:34,025 INFO L226 Difference]: Without dead ends: 25977 [2024-11-08 19:20:34,040 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:20:34,042 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 34 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 19:20:34,043 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 219 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 19:20:34,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25977 states. [2024-11-08 19:20:35,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25977 to 25015. [2024-11-08 19:20:35,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25015 states, 25014 states have (on average 1.1803789877668505) internal successors, (29526), 25014 states have internal predecessors, (29526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:35,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25015 states to 25015 states and 29526 transitions. [2024-11-08 19:20:35,329 INFO L78 Accepts]: Start accepts. Automaton has 25015 states and 29526 transitions. Word has length 69 [2024-11-08 19:20:35,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:20:35,329 INFO L471 AbstractCegarLoop]: Abstraction has 25015 states and 29526 transitions. [2024-11-08 19:20:35,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:35,330 INFO L276 IsEmpty]: Start isEmpty. Operand 25015 states and 29526 transitions. [2024-11-08 19:20:35,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-08 19:20:35,335 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:20:35,336 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 19:20:35,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-08 19:20:35,336 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:20:35,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:20:35,337 INFO L85 PathProgramCache]: Analyzing trace with hash 65049773, now seen corresponding path program 1 times [2024-11-08 19:20:35,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:20:35,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84273345] [2024-11-08 19:20:35,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:20:35,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:20:35,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:35,424 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:20:35,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:20:35,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84273345] [2024-11-08 19:20:35,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84273345] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:20:35,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:20:35,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 19:20:35,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805714503] [2024-11-08 19:20:35,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:20:35,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:20:35,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:20:35,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:20:35,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:20:35,428 INFO L87 Difference]: Start difference. First operand 25015 states and 29526 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:36,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:20:36,071 INFO L93 Difference]: Finished difference Result 33772 states and 39807 transitions. [2024-11-08 19:20:36,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:20:36,166 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) Word has length 69 [2024-11-08 19:20:36,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:20:36,183 INFO L225 Difference]: With dead ends: 33772 [2024-11-08 19:20:36,183 INFO L226 Difference]: Without dead ends: 19701 [2024-11-08 19:20:36,191 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:20:36,192 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 37 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 19:20:36,192 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 211 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 19:20:36,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19701 states. [2024-11-08 19:20:36,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19701 to 17640. [2024-11-08 19:20:36,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17640 states, 17639 states have (on average 1.1608367821305063) internal successors, (20476), 17639 states have internal predecessors, (20476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:36,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17640 states to 17640 states and 20476 transitions. [2024-11-08 19:20:36,835 INFO L78 Accepts]: Start accepts. Automaton has 17640 states and 20476 transitions. Word has length 69 [2024-11-08 19:20:36,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:20:36,836 INFO L471 AbstractCegarLoop]: Abstraction has 17640 states and 20476 transitions. [2024-11-08 19:20:36,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:36,836 INFO L276 IsEmpty]: Start isEmpty. Operand 17640 states and 20476 transitions. [2024-11-08 19:20:36,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-08 19:20:36,839 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:20:36,839 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 19:20:36,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-08 19:20:36,840 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:20:36,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:20:36,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1473239183, now seen corresponding path program 1 times [2024-11-08 19:20:36,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:20:36,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612233639] [2024-11-08 19:20:36,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:20:36,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:20:36,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:37,663 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:20:37,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:20:37,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612233639] [2024-11-08 19:20:37,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612233639] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:20:37,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580998781] [2024-11-08 19:20:37,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:20:37,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:20:37,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:20:37,666 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:20:37,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 19:20:37,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:37,794 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-08 19:20:37,796 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:20:38,831 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:20:38,832 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:20:39,864 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:20:39,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580998781] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:20:39,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:20:39,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 29 [2024-11-08 19:20:39,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589589995] [2024-11-08 19:20:39,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:20:39,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-08 19:20:39,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:20:39,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-08 19:20:39,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=703, Unknown=0, NotChecked=0, Total=812 [2024-11-08 19:20:39,871 INFO L87 Difference]: Start difference. First operand 17640 states and 20476 transitions. Second operand has 29 states, 29 states have (on average 6.482758620689655) internal successors, (188), 29 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:43,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:20:43,970 INFO L93 Difference]: Finished difference Result 32775 states and 38099 transitions. [2024-11-08 19:20:43,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-08 19:20:43,970 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 6.482758620689655) internal successors, (188), 29 states have internal predecessors, (188), 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) Word has length 70 [2024-11-08 19:20:43,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:20:43,988 INFO L225 Difference]: With dead ends: 32775 [2024-11-08 19:20:43,988 INFO L226 Difference]: Without dead ends: 24247 [2024-11-08 19:20:43,996 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 906 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=754, Invalid=2906, Unknown=0, NotChecked=0, Total=3660 [2024-11-08 19:20:43,996 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 1821 mSDsluCounter, 1696 mSDsCounter, 0 mSdLazyCounter, 1338 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1821 SdHoareTripleChecker+Valid, 1766 SdHoareTripleChecker+Invalid, 1365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-08 19:20:43,997 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1821 Valid, 1766 Invalid, 1365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1338 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-08 19:20:44,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24247 states. [2024-11-08 19:20:44,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24247 to 18275. [2024-11-08 19:20:44,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18275 states, 18274 states have (on average 1.164933785706468) internal successors, (21288), 18274 states have internal predecessors, (21288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:44,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18275 states to 18275 states and 21288 transitions. [2024-11-08 19:20:44,596 INFO L78 Accepts]: Start accepts. Automaton has 18275 states and 21288 transitions. Word has length 70 [2024-11-08 19:20:44,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:20:44,596 INFO L471 AbstractCegarLoop]: Abstraction has 18275 states and 21288 transitions. [2024-11-08 19:20:44,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 6.482758620689655) internal successors, (188), 29 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:20:44,597 INFO L276 IsEmpty]: Start isEmpty. Operand 18275 states and 21288 transitions. [2024-11-08 19:20:44,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-08 19:20:44,600 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:20:44,600 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 19:20:44,624 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 19:20:44,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-08 19:20:44,804 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:20:44,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:20:44,804 INFO L85 PathProgramCache]: Analyzing trace with hash 508283599, now seen corresponding path program 1 times [2024-11-08 19:20:44,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:20:44,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520571982] [2024-11-08 19:20:44,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:20:44,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:20:44,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:46,167 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:20:46,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:20:46,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520571982] [2024-11-08 19:20:46,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520571982] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:20:46,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493890235] [2024-11-08 19:20:46,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:20:46,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:20:46,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:20:46,170 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:20:46,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 19:20:46,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:20:46,325 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-08 19:20:46,331 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:20:47,328 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:20:47,329 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:20:49,234 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:20:49,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493890235] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:20:49,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:20:49,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 34 [2024-11-08 19:20:49,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008237036] [2024-11-08 19:20:49,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:20:49,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-08 19:20:49,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:20:49,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-08 19:20:49,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1009, Unknown=0, NotChecked=0, Total=1122 [2024-11-08 19:20:49,237 INFO L87 Difference]: Start difference. First operand 18275 states and 21288 transitions. Second operand has 34 states, 34 states have (on average 5.382352941176471) internal successors, (183), 34 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:21:17,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:21:17,908 INFO L93 Difference]: Finished difference Result 72995 states and 85264 transitions. [2024-11-08 19:21:17,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2024-11-08 19:21:17,909 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.382352941176471) internal successors, (183), 34 states have internal predecessors, (183), 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) Word has length 70 [2024-11-08 19:21:17,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:21:17,964 INFO L225 Difference]: With dead ends: 72995 [2024-11-08 19:21:17,964 INFO L226 Difference]: Without dead ends: 59358 [2024-11-08 19:21:17,983 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16942 ImplicationChecksByTransitivity, 24.5s TimeCoverageRelationStatistics Valid=7335, Invalid=33267, Unknown=0, NotChecked=0, Total=40602 [2024-11-08 19:21:17,984 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 8079 mSDsluCounter, 2909 mSDsCounter, 0 mSdLazyCounter, 2679 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8079 SdHoareTripleChecker+Valid, 3012 SdHoareTripleChecker+Invalid, 2890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 2679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-08 19:21:17,984 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8079 Valid, 3012 Invalid, 2890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 2679 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-08 19:21:18,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59358 states. [2024-11-08 19:21:19,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59358 to 16866. [2024-11-08 19:21:19,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16866 states, 16865 states have (on average 1.1625259412985474) internal successors, (19606), 16865 states have internal predecessors, (19606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:21:19,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16866 states to 16866 states and 19606 transitions. [2024-11-08 19:21:19,304 INFO L78 Accepts]: Start accepts. Automaton has 16866 states and 19606 transitions. Word has length 70 [2024-11-08 19:21:19,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:21:19,305 INFO L471 AbstractCegarLoop]: Abstraction has 16866 states and 19606 transitions. [2024-11-08 19:21:19,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.382352941176471) internal successors, (183), 34 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:21:19,305 INFO L276 IsEmpty]: Start isEmpty. Operand 16866 states and 19606 transitions. [2024-11-08 19:21:19,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-08 19:21:19,315 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:21:19,315 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2024-11-08 19:21:19,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-08 19:21:19,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-08 19:21:19,521 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:21:19,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:21:19,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1500250162, now seen corresponding path program 1 times [2024-11-08 19:21:19,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:21:19,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093013188] [2024-11-08 19:21:19,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:21:19,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:21:19,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:21:21,045 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 26 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:21:21,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:21:21,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093013188] [2024-11-08 19:21:21,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093013188] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:21:21,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077638134] [2024-11-08 19:21:21,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:21:21,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:21:21,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:21:21,049 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:21:21,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 19:21:21,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:21:21,252 INFO L255 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-08 19:21:21,258 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:21:22,353 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 29 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:21:22,353 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:21:25,230 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 26 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:21:25,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077638134] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:21:25,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:21:25,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 31 [2024-11-08 19:21:25,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987419740] [2024-11-08 19:21:25,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:21:25,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-08 19:21:25,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:21:25,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-08 19:21:25,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=865, Unknown=0, NotChecked=0, Total=992 [2024-11-08 19:21:25,234 INFO L87 Difference]: Start difference. First operand 16866 states and 19606 transitions. Second operand has 32 states, 32 states have (on average 8.625) internal successors, (276), 31 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:21:28,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:21:28,808 INFO L93 Difference]: Finished difference Result 31911 states and 37488 transitions. [2024-11-08 19:21:28,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-08 19:21:28,809 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 8.625) internal successors, (276), 31 states have internal predecessors, (276), 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) Word has length 114 [2024-11-08 19:21:28,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:21:28,829 INFO L225 Difference]: With dead ends: 31911 [2024-11-08 19:21:28,829 INFO L226 Difference]: Without dead ends: 26149 [2024-11-08 19:21:28,833 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 970 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=971, Invalid=3451, Unknown=0, NotChecked=0, Total=4422 [2024-11-08 19:21:28,834 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 996 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 1031 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 996 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 1059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-08 19:21:28,834 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [996 Valid, 960 Invalid, 1059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1031 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-08 19:21:28,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26149 states. [2024-11-08 19:21:30,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26149 to 23178. [2024-11-08 19:21:30,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23178 states, 23177 states have (on average 1.1627475514518704) internal successors, (26949), 23177 states have internal predecessors, (26949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:21:30,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23178 states to 23178 states and 26949 transitions. [2024-11-08 19:21:30,095 INFO L78 Accepts]: Start accepts. Automaton has 23178 states and 26949 transitions. Word has length 114 [2024-11-08 19:21:30,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:21:30,095 INFO L471 AbstractCegarLoop]: Abstraction has 23178 states and 26949 transitions. [2024-11-08 19:21:30,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 8.625) internal successors, (276), 31 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:21:30,096 INFO L276 IsEmpty]: Start isEmpty. Operand 23178 states and 26949 transitions. [2024-11-08 19:21:30,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-08 19:21:30,106 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:21:30,107 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2024-11-08 19:21:30,133 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 19:21:30,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-08 19:21:30,311 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:21:30,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:21:30,311 INFO L85 PathProgramCache]: Analyzing trace with hash -615095184, now seen corresponding path program 1 times [2024-11-08 19:21:30,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:21:30,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158353465] [2024-11-08 19:21:30,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:21:30,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:21:30,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:21:31,795 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 16 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:21:31,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:21:31,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158353465] [2024-11-08 19:21:31,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158353465] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:21:31,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405480586] [2024-11-08 19:21:31,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:21:31,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:21:31,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:21:31,797 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:21:31,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 19:21:31,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:21:31,994 INFO L255 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-08 19:21:31,996 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:21:34,428 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 34 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:21:34,428 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:21:39,036 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 34 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:21:39,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405480586] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:21:39,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:21:39,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18, 17] total 48 [2024-11-08 19:21:39,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262749781] [2024-11-08 19:21:39,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:21:39,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-08 19:21:39,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:21:39,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-08 19:21:39,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=2064, Unknown=0, NotChecked=0, Total=2256 [2024-11-08 19:21:39,039 INFO L87 Difference]: Start difference. First operand 23178 states and 26949 transitions. Second operand has 48 states, 48 states have (on average 6.583333333333333) internal successors, (316), 48 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:24:08,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:24:08,926 INFO L93 Difference]: Finished difference Result 66450 states and 77160 transitions. [2024-11-08 19:24:08,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 564 states. [2024-11-08 19:24:08,927 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 6.583333333333333) internal successors, (316), 48 states have internal predecessors, (316), 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) Word has length 114 [2024-11-08 19:24:08,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:24:08,993 INFO L225 Difference]: With dead ends: 66450 [2024-11-08 19:24:08,993 INFO L226 Difference]: Without dead ends: 49444 [2024-11-08 19:24:09,045 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 804 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 608 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166016 ImplicationChecksByTransitivity, 139.1s TimeCoverageRelationStatistics Valid=35499, Invalid=335991, Unknown=0, NotChecked=0, Total=371490 [2024-11-08 19:24:09,046 INFO L432 NwaCegarLoop]: 298 mSDtfsCounter, 6568 mSDsluCounter, 8314 mSDsCounter, 0 mSdLazyCounter, 8012 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6568 SdHoareTripleChecker+Valid, 8612 SdHoareTripleChecker+Invalid, 8258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 8012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2024-11-08 19:24:09,047 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6568 Valid, 8612 Invalid, 8258 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [246 Valid, 8012 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2024-11-08 19:24:09,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49444 states. [2024-11-08 19:24:11,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49444 to 32060. [2024-11-08 19:24:11,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32060 states, 32059 states have (on average 1.1597679278829658) internal successors, (37181), 32059 states have internal predecessors, (37181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:24:11,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32060 states to 32060 states and 37181 transitions. [2024-11-08 19:24:11,293 INFO L78 Accepts]: Start accepts. Automaton has 32060 states and 37181 transitions. Word has length 114 [2024-11-08 19:24:11,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:24:11,294 INFO L471 AbstractCegarLoop]: Abstraction has 32060 states and 37181 transitions. [2024-11-08 19:24:11,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 6.583333333333333) internal successors, (316), 48 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:24:11,294 INFO L276 IsEmpty]: Start isEmpty. Operand 32060 states and 37181 transitions. [2024-11-08 19:24:11,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-08 19:24:11,302 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:24:11,303 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2024-11-08 19:24:11,330 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 19:24:11,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-08 19:24:11,504 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:24:11,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:24:11,504 INFO L85 PathProgramCache]: Analyzing trace with hash 210322132, now seen corresponding path program 1 times [2024-11-08 19:24:11,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:24:11,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537868612] [2024-11-08 19:24:11,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:24:11,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:24:11,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:24:12,741 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 26 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:24:12,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:24:12,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537868612] [2024-11-08 19:24:12,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537868612] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:24:12,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394845282] [2024-11-08 19:24:12,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:24:12,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:24:12,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:24:12,745 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:24:12,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 19:24:12,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:24:12,922 INFO L255 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-08 19:24:12,924 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:24:14,862 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 29 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:24:14,862 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:24:18,757 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 26 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:24:18,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394845282] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:24:18,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:24:18,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2024-11-08 19:24:18,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121675511] [2024-11-08 19:24:18,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:24:18,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-08 19:24:18,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:24:18,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-08 19:24:18,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=939, Unknown=0, NotChecked=0, Total=1056 [2024-11-08 19:24:18,760 INFO L87 Difference]: Start difference. First operand 32060 states and 37181 transitions. Second operand has 33 states, 33 states have (on average 8.454545454545455) internal successors, (279), 33 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:24:27,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:24:27,917 INFO L93 Difference]: Finished difference Result 60619 states and 70477 transitions. [2024-11-08 19:24:27,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2024-11-08 19:24:27,918 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 8.454545454545455) internal successors, (279), 33 states have internal predecessors, (279), 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) Word has length 115 [2024-11-08 19:24:27,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:24:27,949 INFO L225 Difference]: With dead ends: 60619 [2024-11-08 19:24:27,949 INFO L226 Difference]: Without dead ends: 37843 [2024-11-08 19:24:27,962 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3867 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=2345, Invalid=11227, Unknown=0, NotChecked=0, Total=13572 [2024-11-08 19:24:27,963 INFO L432 NwaCegarLoop]: 180 mSDtfsCounter, 1610 mSDsluCounter, 2379 mSDsCounter, 0 mSdLazyCounter, 2869 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1610 SdHoareTripleChecker+Valid, 2559 SdHoareTripleChecker+Invalid, 2921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 2869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-08 19:24:27,963 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1610 Valid, 2559 Invalid, 2921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 2869 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-08 19:24:27,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37843 states. [2024-11-08 19:24:29,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37843 to 22968. [2024-11-08 19:24:29,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22968 states, 22967 states have (on average 1.14734183828972) internal successors, (26351), 22967 states have internal predecessors, (26351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:24:29,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22968 states to 22968 states and 26351 transitions. [2024-11-08 19:24:29,522 INFO L78 Accepts]: Start accepts. Automaton has 22968 states and 26351 transitions. Word has length 115 [2024-11-08 19:24:29,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:24:29,522 INFO L471 AbstractCegarLoop]: Abstraction has 22968 states and 26351 transitions. [2024-11-08 19:24:29,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 8.454545454545455) internal successors, (279), 33 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:24:29,523 INFO L276 IsEmpty]: Start isEmpty. Operand 22968 states and 26351 transitions. [2024-11-08 19:24:29,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-08 19:24:29,527 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:24:29,528 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2024-11-08 19:24:29,554 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 19:24:29,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:24:29,729 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:24:29,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:24:29,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1952233262, now seen corresponding path program 1 times [2024-11-08 19:24:29,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:24:29,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607589945] [2024-11-08 19:24:29,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:24:29,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:24:29,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:24:31,229 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 36 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:24:31,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:24:31,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607589945] [2024-11-08 19:24:31,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607589945] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:24:31,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772579778] [2024-11-08 19:24:31,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:24:31,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:24:31,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:24:31,232 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:24:31,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 19:24:31,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:24:31,434 INFO L255 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-08 19:24:31,437 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:24:32,405 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 41 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:24:32,405 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:24:35,013 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 36 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:24:35,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772579778] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:24:35,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:24:35,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 30 [2024-11-08 19:24:35,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764886205] [2024-11-08 19:24:35,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:24:35,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-08 19:24:35,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:24:35,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-08 19:24:35,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=814, Unknown=0, NotChecked=0, Total=930 [2024-11-08 19:24:35,016 INFO L87 Difference]: Start difference. First operand 22968 states and 26351 transitions. Second operand has 31 states, 31 states have (on average 8.774193548387096) internal successors, (272), 30 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:24:37,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:24:37,996 INFO L93 Difference]: Finished difference Result 33274 states and 38177 transitions. [2024-11-08 19:24:37,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-08 19:24:37,997 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 8.774193548387096) internal successors, (272), 30 states have internal predecessors, (272), 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) Word has length 115 [2024-11-08 19:24:37,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:24:38,026 INFO L225 Difference]: With dead ends: 33274 [2024-11-08 19:24:38,026 INFO L226 Difference]: Without dead ends: 24128 [2024-11-08 19:24:38,036 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=693, Invalid=2499, Unknown=0, NotChecked=0, Total=3192 [2024-11-08 19:24:38,037 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 1327 mSDsluCounter, 921 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1327 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 19:24:38,037 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1327 Valid, 1033 Invalid, 967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 19:24:38,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24128 states. [2024-11-08 19:24:39,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24128 to 20790. [2024-11-08 19:24:39,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20790 states, 20789 states have (on average 1.1395930540189523) internal successors, (23691), 20789 states have internal predecessors, (23691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:24:39,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20790 states to 20790 states and 23691 transitions. [2024-11-08 19:24:39,433 INFO L78 Accepts]: Start accepts. Automaton has 20790 states and 23691 transitions. Word has length 115 [2024-11-08 19:24:39,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:24:39,434 INFO L471 AbstractCegarLoop]: Abstraction has 20790 states and 23691 transitions. [2024-11-08 19:24:39,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 8.774193548387096) internal successors, (272), 30 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:24:39,434 INFO L276 IsEmpty]: Start isEmpty. Operand 20790 states and 23691 transitions. [2024-11-08 19:24:39,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-08 19:24:39,441 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:24:39,441 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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] [2024-11-08 19:24:39,466 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-08 19:24:39,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:24:39,646 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:24:39,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:24:39,646 INFO L85 PathProgramCache]: Analyzing trace with hash 499831936, now seen corresponding path program 1 times [2024-11-08 19:24:39,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:24:39,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264152717] [2024-11-08 19:24:39,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:24:39,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:24:39,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:24:41,421 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 16 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:24:41,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:24:41,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264152717] [2024-11-08 19:24:41,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264152717] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:24:41,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163801317] [2024-11-08 19:24:41,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:24:41,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:24:41,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:24:41,424 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:24:41,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 19:24:41,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:24:41,600 INFO L255 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-08 19:24:41,602 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:24:46,602 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 64 proven. 7 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-08 19:24:46,602 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:24:51,212 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 64 proven. 7 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-08 19:24:51,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163801317] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:24:51,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:24:51,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 59 [2024-11-08 19:24:51,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558321103] [2024-11-08 19:24:51,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:24:51,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-08 19:24:51,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:24:51,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-08 19:24:51,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=3065, Unknown=0, NotChecked=0, Total=3422 [2024-11-08 19:24:51,215 INFO L87 Difference]: Start difference. First operand 20790 states and 23691 transitions. Second operand has 59 states, 59 states have (on average 4.491525423728813) internal successors, (265), 59 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:26:06,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:26:06,034 INFO L93 Difference]: Finished difference Result 33420 states and 37984 transitions. [2024-11-08 19:26:06,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 238 states. [2024-11-08 19:26:06,035 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 4.491525423728813) internal successors, (265), 59 states have internal predecessors, (265), 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) Word has length 116 [2024-11-08 19:26:06,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:26:06,059 INFO L225 Difference]: With dead ends: 33420 [2024-11-08 19:26:06,060 INFO L226 Difference]: Without dead ends: 27954 [2024-11-08 19:26:06,070 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31108 ImplicationChecksByTransitivity, 67.2s TimeCoverageRelationStatistics Valid=13213, Invalid=68297, Unknown=0, NotChecked=0, Total=81510 [2024-11-08 19:26:06,071 INFO L432 NwaCegarLoop]: 175 mSDtfsCounter, 4507 mSDsluCounter, 5435 mSDsCounter, 0 mSdLazyCounter, 6767 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4507 SdHoareTripleChecker+Valid, 5610 SdHoareTripleChecker+Invalid, 6987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 6767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2024-11-08 19:26:06,071 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4507 Valid, 5610 Invalid, 6987 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [220 Valid, 6767 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2024-11-08 19:26:06,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27954 states. [2024-11-08 19:26:07,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27954 to 20665. [2024-11-08 19:26:07,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20665 states, 20664 states have (on average 1.1375822686798296) internal successors, (23507), 20664 states have internal predecessors, (23507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:26:07,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20665 states to 20665 states and 23507 transitions. [2024-11-08 19:26:07,652 INFO L78 Accepts]: Start accepts. Automaton has 20665 states and 23507 transitions. Word has length 116 [2024-11-08 19:26:07,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:26:07,652 INFO L471 AbstractCegarLoop]: Abstraction has 20665 states and 23507 transitions. [2024-11-08 19:26:07,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 4.491525423728813) internal successors, (265), 59 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:26:07,653 INFO L276 IsEmpty]: Start isEmpty. Operand 20665 states and 23507 transitions. [2024-11-08 19:26:07,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-08 19:26:07,657 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:26:07,657 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:26:07,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-08 19:26:07,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:26:07,858 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:26:07,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:26:07,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1863524446, now seen corresponding path program 1 times [2024-11-08 19:26:07,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:26:07,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442322329] [2024-11-08 19:26:07,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:26:07,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:26:07,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:26:08,039 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 53 proven. 3 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-08 19:26:08,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:26:08,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442322329] [2024-11-08 19:26:08,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442322329] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:26:08,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353697147] [2024-11-08 19:26:08,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:26:08,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:26:08,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:26:08,042 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:26:08,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 19:26:08,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:26:08,236 INFO L255 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 19:26:08,238 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:26:08,488 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 53 proven. 3 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-08 19:26:08,488 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:26:08,638 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 53 proven. 3 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-08 19:26:08,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353697147] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:26:08,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:26:08,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2024-11-08 19:26:08,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557886774] [2024-11-08 19:26:08,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:26:08,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-08 19:26:08,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:26:08,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-08 19:26:08,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2024-11-08 19:26:08,640 INFO L87 Difference]: Start difference. First operand 20665 states and 23507 transitions. Second operand has 16 states, 16 states have (on average 11.6875) internal successors, (187), 15 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:26:10,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:26:10,222 INFO L93 Difference]: Finished difference Result 22409 states and 25519 transitions. [2024-11-08 19:26:10,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 19:26:10,223 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.6875) internal successors, (187), 15 states have internal predecessors, (187), 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) Word has length 116 [2024-11-08 19:26:10,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:26:10,242 INFO L225 Difference]: With dead ends: 22409 [2024-11-08 19:26:10,242 INFO L226 Difference]: Without dead ends: 20808 [2024-11-08 19:26:10,246 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2024-11-08 19:26:10,247 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 523 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 19:26:10,247 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [523 Valid, 239 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 19:26:10,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20808 states. [2024-11-08 19:26:11,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20808 to 20665. [2024-11-08 19:26:11,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20665 states, 20664 states have (on average 1.136759581881533) internal successors, (23490), 20664 states have internal predecessors, (23490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:26:11,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20665 states to 20665 states and 23490 transitions. [2024-11-08 19:26:11,756 INFO L78 Accepts]: Start accepts. Automaton has 20665 states and 23490 transitions. Word has length 116 [2024-11-08 19:26:11,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:26:11,757 INFO L471 AbstractCegarLoop]: Abstraction has 20665 states and 23490 transitions. [2024-11-08 19:26:11,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.6875) internal successors, (187), 15 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:26:11,757 INFO L276 IsEmpty]: Start isEmpty. Operand 20665 states and 23490 transitions. [2024-11-08 19:26:11,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-08 19:26:11,764 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:26:11,764 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:26:11,791 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-08 19:26:11,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:26:11,968 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:26:11,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:26:11,968 INFO L85 PathProgramCache]: Analyzing trace with hash 893503386, now seen corresponding path program 1 times [2024-11-08 19:26:11,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:26:11,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51551617] [2024-11-08 19:26:11,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:26:11,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:26:12,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:26:12,148 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 58 proven. 5 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-08 19:26:12,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:26:12,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51551617] [2024-11-08 19:26:12,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51551617] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:26:12,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025878458] [2024-11-08 19:26:12,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:26:12,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:26:12,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:26:12,151 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:26:12,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-08 19:26:12,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:26:12,352 INFO L255 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 19:26:12,354 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:26:12,618 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 58 proven. 5 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-08 19:26:12,619 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:26:12,866 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 58 proven. 5 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-08 19:26:12,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025878458] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:26:12,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:26:12,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2024-11-08 19:26:12,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738765519] [2024-11-08 19:26:12,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:26:12,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-08 19:26:12,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:26:12,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-08 19:26:12,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2024-11-08 19:26:12,870 INFO L87 Difference]: Start difference. First operand 20665 states and 23490 transitions. Second operand has 16 states, 16 states have (on average 12.375) internal successors, (198), 15 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:26:14,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:26:14,540 INFO L93 Difference]: Finished difference Result 23976 states and 27298 transitions. [2024-11-08 19:26:14,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 19:26:14,541 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 12.375) internal successors, (198), 15 states have internal predecessors, (198), 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) Word has length 116 [2024-11-08 19:26:14,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:26:14,558 INFO L225 Difference]: With dead ends: 23976 [2024-11-08 19:26:14,558 INFO L226 Difference]: Without dead ends: 20102 [2024-11-08 19:26:14,562 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2024-11-08 19:26:14,563 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 360 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 19:26:14,563 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 255 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 19:26:14,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20102 states. [2024-11-08 19:26:16,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20102 to 19551. [2024-11-08 19:26:16,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19551 states, 19550 states have (on average 1.1353452685421994) internal successors, (22196), 19550 states have internal predecessors, (22196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:26:16,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19551 states to 19551 states and 22196 transitions. [2024-11-08 19:26:16,066 INFO L78 Accepts]: Start accepts. Automaton has 19551 states and 22196 transitions. Word has length 116 [2024-11-08 19:26:16,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:26:16,067 INFO L471 AbstractCegarLoop]: Abstraction has 19551 states and 22196 transitions. [2024-11-08 19:26:16,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.375) internal successors, (198), 15 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:26:16,067 INFO L276 IsEmpty]: Start isEmpty. Operand 19551 states and 22196 transitions. [2024-11-08 19:26:16,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-08 19:26:16,071 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:26:16,071 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:26:16,088 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-08 19:26:16,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:26:16,272 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:26:16,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:26:16,273 INFO L85 PathProgramCache]: Analyzing trace with hash 2124543650, now seen corresponding path program 1 times [2024-11-08 19:26:16,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:26:16,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955867670] [2024-11-08 19:26:16,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:26:16,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:26:16,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:26:18,841 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 36 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:26:18,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:26:18,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955867670] [2024-11-08 19:26:18,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955867670] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:26:18,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899972764] [2024-11-08 19:26:18,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:26:18,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:26:18,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 19:26:18,843 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:26:18,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e23099d2-eed5-4899-9ddd-d3a811a47861/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-08 19:26:19,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:26:19,038 INFO L255 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-11-08 19:26:19,041 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:26:25,216 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 26 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:26:25,216 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:26:41,225 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 16 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:26:41,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899972764] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:26:41,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:26:41,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 32, 29] total 83 [2024-11-08 19:26:41,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147519660] [2024-11-08 19:26:41,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:26:41,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2024-11-08 19:26:41,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:26:41,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2024-11-08 19:26:41,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=683, Invalid=6123, Unknown=0, NotChecked=0, Total=6806 [2024-11-08 19:26:41,228 INFO L87 Difference]: Start difference. First operand 19551 states and 22196 transitions. Second operand has 83 states, 83 states have (on average 3.9759036144578315) internal successors, (330), 83 states have internal predecessors, (330), 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)