./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem12_label51.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_3035361a-1ec9-42d2-82fc-ba1dc99d3849/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3035361a-1ec9-42d2-82fc-ba1dc99d3849/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3035361a-1ec9-42d2-82fc-ba1dc99d3849/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3035361a-1ec9-42d2-82fc-ba1dc99d3849/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem12_label51.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3035361a-1ec9-42d2-82fc-ba1dc99d3849/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3035361a-1ec9-42d2-82fc-ba1dc99d3849/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --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 c7d97141912edf4d560524a4fad707a432ae86320ba1bcf5df7fccfaf2185109 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:10:27,012 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:10:27,014 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:10:27,039 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:10:27,045 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:10:27,049 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:10:27,052 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:10:27,058 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:10:27,063 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:10:27,066 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:10:27,068 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:10:27,069 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:10:27,070 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:10:27,073 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:10:27,075 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:10:27,076 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:10:27,078 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:10:27,083 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:10:27,085 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:10:27,087 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:10:27,090 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:10:27,091 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:10:27,094 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:10:27,095 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:10:27,100 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:10:27,104 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:10:27,105 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:10:27,106 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:10:27,107 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:10:27,108 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:10:27,109 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:10:27,110 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:10:27,112 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:10:27,113 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:10:27,115 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:10:27,116 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:10:27,117 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:10:27,117 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:10:27,117 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:10:27,118 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:10:27,119 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:10:27,120 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3035361a-1ec9-42d2-82fc-ba1dc99d3849/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:10:27,156 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:10:27,161 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:10:27,162 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:10:27,162 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:10:27,163 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:10:27,163 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:10:27,164 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:10:27,164 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:10:27,165 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:10:27,165 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:10:27,166 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:10:27,166 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:10:27,167 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:10:27,167 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:10:27,167 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:10:27,168 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:10:27,168 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:10:27,168 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:10:27,168 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:10:27,169 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:10:27,169 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:10:27,169 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:10:27,170 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:10:27,170 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:10:27,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:10:27,170 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:10:27,171 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:10:27,171 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:10:27,171 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:10:27,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:10:27,173 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:10:27,173 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:10:27,174 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:10:27,174 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_3035361a-1ec9-42d2-82fc-ba1dc99d3849/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3035361a-1ec9-42d2-82fc-ba1dc99d3849/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7d97141912edf4d560524a4fad707a432ae86320ba1bcf5df7fccfaf2185109 [2022-11-16 11:10:27,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:10:27,447 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:10:27,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:10:27,451 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:10:27,451 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:10:27,453 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3035361a-1ec9-42d2-82fc-ba1dc99d3849/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/eca-rers2012/Problem12_label51.c [2022-11-16 11:10:27,540 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3035361a-1ec9-42d2-82fc-ba1dc99d3849/bin/uautomizer-tPACEb0tL8/data/c1c865de7/ccd43145c82a436798b32b44cbba0517/FLAGf210a3b13 [2022-11-16 11:10:28,325 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:10:28,326 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3035361a-1ec9-42d2-82fc-ba1dc99d3849/sv-benchmarks/c/eca-rers2012/Problem12_label51.c [2022-11-16 11:10:28,355 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3035361a-1ec9-42d2-82fc-ba1dc99d3849/bin/uautomizer-tPACEb0tL8/data/c1c865de7/ccd43145c82a436798b32b44cbba0517/FLAGf210a3b13 [2022-11-16 11:10:28,403 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3035361a-1ec9-42d2-82fc-ba1dc99d3849/bin/uautomizer-tPACEb0tL8/data/c1c865de7/ccd43145c82a436798b32b44cbba0517 [2022-11-16 11:10:28,406 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:10:28,409 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:10:28,414 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:10:28,414 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:10:28,417 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:10:28,418 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:10:28" (1/1) ... [2022-11-16 11:10:28,419 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@334674b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:10:28, skipping insertion in model container [2022-11-16 11:10:28,420 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:10:28" (1/1) ... [2022-11-16 11:10:28,427 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:10:28,580 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:10:28,812 WARN L229 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_3035361a-1ec9-42d2-82fc-ba1dc99d3849/sv-benchmarks/c/eca-rers2012/Problem12_label51.c[1794,1807] [2022-11-16 11:10:29,903 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:10:29,911 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:10:29,924 WARN L229 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_3035361a-1ec9-42d2-82fc-ba1dc99d3849/sv-benchmarks/c/eca-rers2012/Problem12_label51.c[1794,1807] [2022-11-16 11:10:30,525 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:10:30,550 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:10:30,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:10:30 WrapperNode [2022-11-16 11:10:30,551 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:10:30,552 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:10:30,552 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:10:30,553 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:10:30,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:10:30" (1/1) ... [2022-11-16 11:10:30,617 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:10:30" (1/1) ... [2022-11-16 11:10:30,955 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4757 [2022-11-16 11:10:30,955 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:10:30,956 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:10:30,956 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:10:30,957 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:10:30,966 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:10:30" (1/1) ... [2022-11-16 11:10:30,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:10:30" (1/1) ... [2022-11-16 11:10:31,012 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:10:30" (1/1) ... [2022-11-16 11:10:31,012 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:10:30" (1/1) ... [2022-11-16 11:10:31,122 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:10:30" (1/1) ... [2022-11-16 11:10:31,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:10:30" (1/1) ... [2022-11-16 11:10:31,277 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:10:30" (1/1) ... [2022-11-16 11:10:31,291 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:10:30" (1/1) ... [2022-11-16 11:10:31,362 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:10:31,378 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:10:31,379 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:10:31,379 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:10:31,380 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:10:30" (1/1) ... [2022-11-16 11:10:31,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:10:31,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3035361a-1ec9-42d2-82fc-ba1dc99d3849/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:10:31,448 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3035361a-1ec9-42d2-82fc-ba1dc99d3849/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:10:31,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3035361a-1ec9-42d2-82fc-ba1dc99d3849/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:10:31,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:10:31,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:10:31,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:10:31,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:10:31,683 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:10:31,685 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:10:36,683 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:10:36,696 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:10:36,696 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 11:10:36,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:10:36 BoogieIcfgContainer [2022-11-16 11:10:36,699 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:10:36,702 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:10:36,702 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:10:36,706 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:10:36,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:10:28" (1/3) ... [2022-11-16 11:10:36,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f8e605c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:10:36, skipping insertion in model container [2022-11-16 11:10:36,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:10:30" (2/3) ... [2022-11-16 11:10:36,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f8e605c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:10:36, skipping insertion in model container [2022-11-16 11:10:36,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:10:36" (3/3) ... [2022-11-16 11:10:36,709 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label51.c [2022-11-16 11:10:36,727 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:10:36,728 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:10:36,809 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:10:36,816 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@27284c26, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:10:36,816 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:10:36,824 INFO L276 IsEmpty]: Start isEmpty. Operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 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) [2022-11-16 11:10:36,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 11:10:36,830 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:10:36,831 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:36,831 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:10:36,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:36,837 INFO L85 PathProgramCache]: Analyzing trace with hash -988188511, now seen corresponding path program 1 times [2022-11-16 11:10:36,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:36,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793970447] [2022-11-16 11:10:36,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:36,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:36,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:37,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:10:37,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:37,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793970447] [2022-11-16 11:10:37,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793970447] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:37,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:37,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:10:37,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857749220] [2022-11-16 11:10:37,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:37,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:10:37,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:37,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:10:37,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:10:37,289 INFO L87 Difference]: Start difference. First operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 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 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-11-16 11:10:44,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:44,965 INFO L93 Difference]: Finished difference Result 3155 states and 6150 transitions. [2022-11-16 11:10:44,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:10:44,967 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2022-11-16 11:10:44,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:10:44,996 INFO L225 Difference]: With dead ends: 3155 [2022-11-16 11:10:44,997 INFO L226 Difference]: Without dead ends: 2265 [2022-11-16 11:10:45,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:10:45,004 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 2474 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 3734 mSolverCounterSat, 1719 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2474 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 5453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1719 IncrementalHoareTripleChecker+Valid, 3734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:10:45,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2474 Valid, 234 Invalid, 5453 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1719 Valid, 3734 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2022-11-16 11:10:45,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2265 states. [2022-11-16 11:10:45,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2265 to 2257. [2022-11-16 11:10:45,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2257 states, 2256 states have (on average 1.5350177304964538) internal successors, (3463), 2256 states have internal predecessors, (3463), 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) [2022-11-16 11:10:45,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2257 states to 2257 states and 3463 transitions. [2022-11-16 11:10:45,174 INFO L78 Accepts]: Start accepts. Automaton has 2257 states and 3463 transitions. Word has length 11 [2022-11-16 11:10:45,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:10:45,175 INFO L495 AbstractCegarLoop]: Abstraction has 2257 states and 3463 transitions. [2022-11-16 11:10:45,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-11-16 11:10:45,175 INFO L276 IsEmpty]: Start isEmpty. Operand 2257 states and 3463 transitions. [2022-11-16 11:10:45,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-11-16 11:10:45,180 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:10:45,180 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:45,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:10:45,181 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:10:45,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:45,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1639014020, now seen corresponding path program 1 times [2022-11-16 11:10:45,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:45,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324902165] [2022-11-16 11:10:45,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:45,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:45,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:45,761 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:10:45,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:45,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324902165] [2022-11-16 11:10:45,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324902165] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:45,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:45,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:10:45,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365119003] [2022-11-16 11:10:45,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:45,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:10:45,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:45,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:10:45,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:10:45,768 INFO L87 Difference]: Start difference. First operand 2257 states and 3463 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 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) [2022-11-16 11:10:51,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:51,091 INFO L93 Difference]: Finished difference Result 6051 states and 9664 transitions. [2022-11-16 11:10:51,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:10:51,094 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 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 151 [2022-11-16 11:10:51,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:10:51,107 INFO L225 Difference]: With dead ends: 6051 [2022-11-16 11:10:51,108 INFO L226 Difference]: Without dead ends: 3759 [2022-11-16 11:10:51,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:10:51,113 INFO L413 NwaCegarLoop]: 694 mSDtfsCounter, 704 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 3107 mSolverCounterSat, 729 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 3836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 729 IncrementalHoareTripleChecker+Valid, 3107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:10:51,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 708 Invalid, 3836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [729 Valid, 3107 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-16 11:10:51,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3759 states. [2022-11-16 11:10:51,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3759 to 3759. [2022-11-16 11:10:51,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3759 states, 3758 states have (on average 1.3408728046833422) internal successors, (5039), 3758 states have internal predecessors, (5039), 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) [2022-11-16 11:10:51,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3759 states to 3759 states and 5039 transitions. [2022-11-16 11:10:51,191 INFO L78 Accepts]: Start accepts. Automaton has 3759 states and 5039 transitions. Word has length 151 [2022-11-16 11:10:51,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:10:51,191 INFO L495 AbstractCegarLoop]: Abstraction has 3759 states and 5039 transitions. [2022-11-16 11:10:51,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 3 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) [2022-11-16 11:10:51,192 INFO L276 IsEmpty]: Start isEmpty. Operand 3759 states and 5039 transitions. [2022-11-16 11:10:51,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-11-16 11:10:51,196 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:10:51,196 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:51,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:10:51,197 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:10:51,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:51,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1288793869, now seen corresponding path program 1 times [2022-11-16 11:10:51,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:51,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820614798] [2022-11-16 11:10:51,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:51,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:51,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:51,509 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-11-16 11:10:51,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:51,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820614798] [2022-11-16 11:10:51,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820614798] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:51,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:10:51,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:10:51,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066995152] [2022-11-16 11:10:51,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:51,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:10:51,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:51,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:10:51,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:10:51,516 INFO L87 Difference]: Start difference. First operand 3759 states and 5039 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 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) [2022-11-16 11:10:55,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:10:55,328 INFO L93 Difference]: Finished difference Result 10520 states and 14356 transitions. [2022-11-16 11:10:55,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:10:55,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 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 221 [2022-11-16 11:10:55,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:10:55,350 INFO L225 Difference]: With dead ends: 10520 [2022-11-16 11:10:55,351 INFO L226 Difference]: Without dead ends: 6763 [2022-11-16 11:10:55,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:10:55,357 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 669 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 845 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 2834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 845 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:10:55,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 486 Invalid, 2834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [845 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-16 11:10:55,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6763 states. [2022-11-16 11:10:55,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6763 to 6012. [2022-11-16 11:10:55,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6012 states, 6011 states have (on average 1.2814839460988188) internal successors, (7703), 6011 states have internal predecessors, (7703), 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) [2022-11-16 11:10:55,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6012 states to 6012 states and 7703 transitions. [2022-11-16 11:10:55,477 INFO L78 Accepts]: Start accepts. Automaton has 6012 states and 7703 transitions. Word has length 221 [2022-11-16 11:10:55,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:10:55,479 INFO L495 AbstractCegarLoop]: Abstraction has 6012 states and 7703 transitions. [2022-11-16 11:10:55,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 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) [2022-11-16 11:10:55,480 INFO L276 IsEmpty]: Start isEmpty. Operand 6012 states and 7703 transitions. [2022-11-16 11:10:55,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-11-16 11:10:55,487 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:10:55,487 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:55,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:10:55,488 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:10:55,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:55,492 INFO L85 PathProgramCache]: Analyzing trace with hash 204077554, now seen corresponding path program 1 times [2022-11-16 11:10:55,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:55,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520027317] [2022-11-16 11:10:55,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:55,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:55,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:56,152 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 17 proven. 54 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-16 11:10:56,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:56,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520027317] [2022-11-16 11:10:56,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520027317] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:10:56,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363311474] [2022-11-16 11:10:56,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:56,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:10:56,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3035361a-1ec9-42d2-82fc-ba1dc99d3849/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:10:56,158 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3035361a-1ec9-42d2-82fc-ba1dc99d3849/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:10:56,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3035361a-1ec9-42d2-82fc-ba1dc99d3849/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:10:56,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:56,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:10:56,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:10:56,547 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:10:56,548 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:10:56,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363311474] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:56,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:10:56,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-11-16 11:10:56,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642992235] [2022-11-16 11:10:56,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:56,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:10:56,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:56,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:10:56,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:10:56,550 INFO L87 Difference]: Start difference. First operand 6012 states and 7703 transitions. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 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) [2022-11-16 11:11:00,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:11:00,347 INFO L93 Difference]: Finished difference Result 15026 states and 19934 transitions. [2022-11-16 11:11:00,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:11:00,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 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 234 [2022-11-16 11:11:00,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:11:00,374 INFO L225 Difference]: With dead ends: 15026 [2022-11-16 11:11:00,375 INFO L226 Difference]: Without dead ends: 9016 [2022-11-16 11:11:00,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:11:00,382 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 908 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2072 mSolverCounterSat, 703 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 2775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 703 IncrementalHoareTripleChecker+Valid, 2072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:11:00,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [908 Valid, 309 Invalid, 2775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [703 Valid, 2072 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-16 11:11:00,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9016 states. [2022-11-16 11:11:00,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9016 to 9016. [2022-11-16 11:11:00,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9016 states, 9015 states have (on average 1.2657792567942319) internal successors, (11411), 9015 states have internal predecessors, (11411), 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) [2022-11-16 11:11:00,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9016 states to 9016 states and 11411 transitions. [2022-11-16 11:11:00,564 INFO L78 Accepts]: Start accepts. Automaton has 9016 states and 11411 transitions. Word has length 234 [2022-11-16 11:11:00,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:11:00,565 INFO L495 AbstractCegarLoop]: Abstraction has 9016 states and 11411 transitions. [2022-11-16 11:11:00,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 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) [2022-11-16 11:11:00,566 INFO L276 IsEmpty]: Start isEmpty. Operand 9016 states and 11411 transitions. [2022-11-16 11:11:00,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2022-11-16 11:11:00,569 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:11:00,570 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:00,576 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3035361a-1ec9-42d2-82fc-ba1dc99d3849/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-16 11:11:00,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3035361a-1ec9-42d2-82fc-ba1dc99d3849/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:11:00,776 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:11:00,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:00,777 INFO L85 PathProgramCache]: Analyzing trace with hash 740515512, now seen corresponding path program 1 times [2022-11-16 11:11:00,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:00,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116887259] [2022-11-16 11:11:00,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:00,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:00,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:01,055 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-11-16 11:11:01,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:01,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116887259] [2022-11-16 11:11:01,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116887259] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:01,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:01,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:11:01,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027938881] [2022-11-16 11:11:01,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:01,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:11:01,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:01,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:11:01,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:11:01,058 INFO L87 Difference]: Start difference. First operand 9016 states and 11411 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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) [2022-11-16 11:11:04,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:11:04,968 INFO L93 Difference]: Finished difference Result 21785 states and 27827 transitions. [2022-11-16 11:11:04,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:11:04,969 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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 251 [2022-11-16 11:11:04,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:11:05,007 INFO L225 Difference]: With dead ends: 21785 [2022-11-16 11:11:05,007 INFO L226 Difference]: Without dead ends: 12771 [2022-11-16 11:11:05,015 INFO L412 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 [2022-11-16 11:11:05,016 INFO L413 NwaCegarLoop]: 1208 mSDtfsCounter, 764 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2254 mSolverCounterSat, 525 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 1216 SdHoareTripleChecker+Invalid, 2779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 525 IncrementalHoareTripleChecker+Valid, 2254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:11:05,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [764 Valid, 1216 Invalid, 2779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [525 Valid, 2254 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-16 11:11:05,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12771 states. [2022-11-16 11:11:05,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12771 to 12771. [2022-11-16 11:11:05,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12771 states, 12770 states have (on average 1.183868441660141) internal successors, (15118), 12770 states have internal predecessors, (15118), 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) [2022-11-16 11:11:05,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12771 states to 12771 states and 15118 transitions. [2022-11-16 11:11:05,248 INFO L78 Accepts]: Start accepts. Automaton has 12771 states and 15118 transitions. Word has length 251 [2022-11-16 11:11:05,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:11:05,249 INFO L495 AbstractCegarLoop]: Abstraction has 12771 states and 15118 transitions. [2022-11-16 11:11:05,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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) [2022-11-16 11:11:05,250 INFO L276 IsEmpty]: Start isEmpty. Operand 12771 states and 15118 transitions. [2022-11-16 11:11:05,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2022-11-16 11:11:05,256 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:11:05,257 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:05,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:11:05,257 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:11:05,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:05,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1278477418, now seen corresponding path program 1 times [2022-11-16 11:11:05,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:05,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869018704] [2022-11-16 11:11:05,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:05,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:05,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:05,634 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 270 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 11:11:05,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:05,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869018704] [2022-11-16 11:11:05,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869018704] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:05,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:05,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:11:05,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181812958] [2022-11-16 11:11:05,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:05,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:11:05,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:05,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:11:05,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:11:05,637 INFO L87 Difference]: Start difference. First operand 12771 states and 15118 transitions. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 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) [2022-11-16 11:11:09,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:11:09,939 INFO L93 Difference]: Finished difference Result 36054 states and 43062 transitions. [2022-11-16 11:11:09,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:11:09,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 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) Word has length 338 [2022-11-16 11:11:09,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:11:09,980 INFO L225 Difference]: With dead ends: 36054 [2022-11-16 11:11:09,981 INFO L226 Difference]: Without dead ends: 23285 [2022-11-16 11:11:09,995 INFO L412 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 [2022-11-16 11:11:09,996 INFO L413 NwaCegarLoop]: 1215 mSDtfsCounter, 639 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2607 mSolverCounterSat, 397 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 1223 SdHoareTripleChecker+Invalid, 3004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 397 IncrementalHoareTripleChecker+Valid, 2607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:11:09,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [639 Valid, 1223 Invalid, 3004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [397 Valid, 2607 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-16 11:11:10,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23285 states. [2022-11-16 11:11:10,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23285 to 22534. [2022-11-16 11:11:10,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22534 states, 22533 states have (on average 1.1720143789109307) internal successors, (26409), 22533 states have internal predecessors, (26409), 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) [2022-11-16 11:11:10,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22534 states to 22534 states and 26409 transitions. [2022-11-16 11:11:10,438 INFO L78 Accepts]: Start accepts. Automaton has 22534 states and 26409 transitions. Word has length 338 [2022-11-16 11:11:10,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:11:10,439 INFO L495 AbstractCegarLoop]: Abstraction has 22534 states and 26409 transitions. [2022-11-16 11:11:10,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 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) [2022-11-16 11:11:10,439 INFO L276 IsEmpty]: Start isEmpty. Operand 22534 states and 26409 transitions. [2022-11-16 11:11:10,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2022-11-16 11:11:10,446 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:11:10,446 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:10,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:11:10,447 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:11:10,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:10,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1344940876, now seen corresponding path program 1 times [2022-11-16 11:11:10,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:10,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119265427] [2022-11-16 11:11:10,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:10,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:10,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:11,486 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-11-16 11:11:11,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:11,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119265427] [2022-11-16 11:11:11,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119265427] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:11,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:11,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:11:11,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465726585] [2022-11-16 11:11:11,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:11,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:11:11,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:11,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:11:11,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:11:11,492 INFO L87 Difference]: Start difference. First operand 22534 states and 26409 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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) [2022-11-16 11:11:15,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:11:15,075 INFO L93 Difference]: Finished difference Result 51074 states and 59608 transitions. [2022-11-16 11:11:15,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:11:15,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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 342 [2022-11-16 11:11:15,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:11:15,128 INFO L225 Difference]: With dead ends: 51074 [2022-11-16 11:11:15,128 INFO L226 Difference]: Without dead ends: 28542 [2022-11-16 11:11:15,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:11:15,149 INFO L413 NwaCegarLoop]: 961 mSDtfsCounter, 829 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2146 mSolverCounterSat, 572 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 969 SdHoareTripleChecker+Invalid, 2718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 572 IncrementalHoareTripleChecker+Valid, 2146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:11:15,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 969 Invalid, 2718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [572 Valid, 2146 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-16 11:11:15,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28542 states. [2022-11-16 11:11:15,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28542 to 27040. [2022-11-16 11:11:15,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27040 states, 27039 states have (on average 1.144716890417545) internal successors, (30952), 27039 states have internal predecessors, (30952), 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) [2022-11-16 11:11:15,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27040 states to 27040 states and 30952 transitions. [2022-11-16 11:11:15,542 INFO L78 Accepts]: Start accepts. Automaton has 27040 states and 30952 transitions. Word has length 342 [2022-11-16 11:11:15,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:11:15,542 INFO L495 AbstractCegarLoop]: Abstraction has 27040 states and 30952 transitions. [2022-11-16 11:11:15,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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) [2022-11-16 11:11:15,543 INFO L276 IsEmpty]: Start isEmpty. Operand 27040 states and 30952 transitions. [2022-11-16 11:11:15,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2022-11-16 11:11:15,555 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:11:15,555 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:15,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:11:15,555 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:11:15,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:15,556 INFO L85 PathProgramCache]: Analyzing trace with hash -357694838, now seen corresponding path program 1 times [2022-11-16 11:11:15,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:15,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766212404] [2022-11-16 11:11:15,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:15,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:15,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:15,935 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 439 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-16 11:11:15,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:15,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766212404] [2022-11-16 11:11:15,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766212404] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:15,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:15,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:11:15,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519360765] [2022-11-16 11:11:15,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:15,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:11:15,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:15,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:11:15,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:11:15,938 INFO L87 Difference]: Start difference. First operand 27040 states and 30952 transitions. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 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) [2022-11-16 11:11:19,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:11:19,767 INFO L93 Difference]: Finished difference Result 54829 states and 62659 transitions. [2022-11-16 11:11:19,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:11:19,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 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 444 [2022-11-16 11:11:19,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:11:19,800 INFO L225 Difference]: With dead ends: 54829 [2022-11-16 11:11:19,801 INFO L226 Difference]: Without dead ends: 27791 [2022-11-16 11:11:19,811 INFO L412 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 [2022-11-16 11:11:19,812 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 663 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2285 mSolverCounterSat, 620 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 2905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 620 IncrementalHoareTripleChecker+Valid, 2285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:11:19,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [663 Valid, 269 Invalid, 2905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [620 Valid, 2285 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-16 11:11:19,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27791 states. [2022-11-16 11:11:20,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27791 to 27040. [2022-11-16 11:11:20,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27040 states, 27039 states have (on average 1.1338437072376937) internal successors, (30658), 27039 states have internal predecessors, (30658), 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) [2022-11-16 11:11:20,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27040 states to 27040 states and 30658 transitions. [2022-11-16 11:11:20,135 INFO L78 Accepts]: Start accepts. Automaton has 27040 states and 30658 transitions. Word has length 444 [2022-11-16 11:11:20,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:11:20,136 INFO L495 AbstractCegarLoop]: Abstraction has 27040 states and 30658 transitions. [2022-11-16 11:11:20,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 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) [2022-11-16 11:11:20,136 INFO L276 IsEmpty]: Start isEmpty. Operand 27040 states and 30658 transitions. [2022-11-16 11:11:20,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2022-11-16 11:11:20,149 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:11:20,149 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:20,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:11:20,150 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:11:20,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:20,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1671865206, now seen corresponding path program 1 times [2022-11-16 11:11:20,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:20,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359609347] [2022-11-16 11:11:20,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:20,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:20,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:21,068 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 261 proven. 230 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-11-16 11:11:21,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:21,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359609347] [2022-11-16 11:11:21,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359609347] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:11:21,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517935309] [2022-11-16 11:11:21,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:21,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:11:21,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3035361a-1ec9-42d2-82fc-ba1dc99d3849/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:11:21,074 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3035361a-1ec9-42d2-82fc-ba1dc99d3849/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:11:21,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3035361a-1ec9-42d2-82fc-ba1dc99d3849/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:11:21,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:21,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 622 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:11:21,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:11:21,614 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 450 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-11-16 11:11:21,615 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:11:21,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517935309] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:21,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:11:21,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-16 11:11:21,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088072393] [2022-11-16 11:11:21,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:21,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:11:21,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:21,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:11:21,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:11:21,618 INFO L87 Difference]: Start difference. First operand 27040 states and 30658 transitions. Second operand has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 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) [2022-11-16 11:11:25,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:11:25,861 INFO L93 Difference]: Finished difference Result 72102 states and 82464 transitions. [2022-11-16 11:11:25,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:11:25,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 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 455 [2022-11-16 11:11:25,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:11:25,907 INFO L225 Difference]: With dead ends: 72102 [2022-11-16 11:11:25,907 INFO L226 Difference]: Without dead ends: 45064 [2022-11-16 11:11:25,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 454 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:11:25,921 INFO L413 NwaCegarLoop]: 1046 mSDtfsCounter, 665 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2347 mSolverCounterSat, 707 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 3054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 707 IncrementalHoareTripleChecker+Valid, 2347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:11:25,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [665 Valid, 1053 Invalid, 3054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [707 Valid, 2347 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-16 11:11:25,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45064 states. [2022-11-16 11:11:26,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45064 to 45064. [2022-11-16 11:11:26,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45064 states, 45063 states have (on average 1.141291081374964) internal successors, (51430), 45063 states have internal predecessors, (51430), 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) [2022-11-16 11:11:26,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45064 states to 45064 states and 51430 transitions. [2022-11-16 11:11:26,719 INFO L78 Accepts]: Start accepts. Automaton has 45064 states and 51430 transitions. Word has length 455 [2022-11-16 11:11:26,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:11:26,721 INFO L495 AbstractCegarLoop]: Abstraction has 45064 states and 51430 transitions. [2022-11-16 11:11:26,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 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) [2022-11-16 11:11:26,721 INFO L276 IsEmpty]: Start isEmpty. Operand 45064 states and 51430 transitions. [2022-11-16 11:11:26,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2022-11-16 11:11:26,759 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:11:26,759 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:26,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3035361a-1ec9-42d2-82fc-ba1dc99d3849/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:11:26,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3035361a-1ec9-42d2-82fc-ba1dc99d3849/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:11:26,960 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:11:26,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:26,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1008289624, now seen corresponding path program 1 times [2022-11-16 11:11:26,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:26,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275289645] [2022-11-16 11:11:26,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:26,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:27,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:27,543 INFO L134 CoverageAnalysis]: Checked inductivity of 566 backedges. 459 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-11-16 11:11:27,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:27,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275289645] [2022-11-16 11:11:27,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275289645] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:27,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:27,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:11:27,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113978144] [2022-11-16 11:11:27,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:27,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:11:27,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:27,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:11:27,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:11:27,547 INFO L87 Difference]: Start difference. First operand 45064 states and 51430 transitions. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 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) [2022-11-16 11:11:31,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:11:31,518 INFO L93 Difference]: Finished difference Result 107399 states and 121876 transitions. [2022-11-16 11:11:31,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:11:31,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 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 464 [2022-11-16 11:11:31,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:11:31,573 INFO L225 Difference]: With dead ends: 107399 [2022-11-16 11:11:31,573 INFO L226 Difference]: Without dead ends: 61586 [2022-11-16 11:11:31,595 INFO L412 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 [2022-11-16 11:11:31,596 INFO L413 NwaCegarLoop]: 1067 mSDtfsCounter, 732 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2109 mSolverCounterSat, 658 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 1074 SdHoareTripleChecker+Invalid, 2767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 658 IncrementalHoareTripleChecker+Valid, 2109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:11:31,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [732 Valid, 1074 Invalid, 2767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [658 Valid, 2109 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-16 11:11:31,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61586 states. [2022-11-16 11:11:32,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61586 to 55578. [2022-11-16 11:11:32,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55578 states, 55577 states have (on average 1.1048275365708837) internal successors, (61403), 55577 states have internal predecessors, (61403), 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) [2022-11-16 11:11:32,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55578 states to 55578 states and 61403 transitions. [2022-11-16 11:11:32,491 INFO L78 Accepts]: Start accepts. Automaton has 55578 states and 61403 transitions. Word has length 464 [2022-11-16 11:11:32,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:11:32,492 INFO L495 AbstractCegarLoop]: Abstraction has 55578 states and 61403 transitions. [2022-11-16 11:11:32,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 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) [2022-11-16 11:11:32,492 INFO L276 IsEmpty]: Start isEmpty. Operand 55578 states and 61403 transitions. [2022-11-16 11:11:32,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2022-11-16 11:11:32,508 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:11:32,508 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 11:11:32,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:11:32,509 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:11:32,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:32,510 INFO L85 PathProgramCache]: Analyzing trace with hash 689872906, now seen corresponding path program 1 times [2022-11-16 11:11:32,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:32,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205558473] [2022-11-16 11:11:32,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:32,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:32,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:33,284 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 437 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-11-16 11:11:33,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:33,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205558473] [2022-11-16 11:11:33,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205558473] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:33,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:33,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:11:33,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60045420] [2022-11-16 11:11:33,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:33,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:11:33,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:33,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:11:33,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:11:33,288 INFO L87 Difference]: Start difference. First operand 55578 states and 61403 transitions. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 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) [2022-11-16 11:11:37,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:11:37,723 INFO L93 Difference]: Finished difference Result 144198 states and 159788 transitions. [2022-11-16 11:11:37,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:11:37,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 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 515 [2022-11-16 11:11:37,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:11:37,820 INFO L225 Difference]: With dead ends: 144198 [2022-11-16 11:11:37,820 INFO L226 Difference]: Without dead ends: 89373 [2022-11-16 11:11:37,850 INFO L412 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 [2022-11-16 11:11:37,851 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 618 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2266 mSolverCounterSat, 647 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 647 IncrementalHoareTripleChecker+Valid, 2266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:11:37,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [618 Valid, 460 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [647 Valid, 2266 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-16 11:11:37,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89373 states. [2022-11-16 11:11:39,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89373 to 87871. [2022-11-16 11:11:39,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87871 states, 87870 states have (on average 1.0897575964493) internal successors, (95757), 87870 states have internal predecessors, (95757), 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) [2022-11-16 11:11:39,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87871 states to 87871 states and 95757 transitions. [2022-11-16 11:11:39,182 INFO L78 Accepts]: Start accepts. Automaton has 87871 states and 95757 transitions. Word has length 515 [2022-11-16 11:11:39,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:11:39,183 INFO L495 AbstractCegarLoop]: Abstraction has 87871 states and 95757 transitions. [2022-11-16 11:11:39,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 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) [2022-11-16 11:11:39,183 INFO L276 IsEmpty]: Start isEmpty. Operand 87871 states and 95757 transitions. [2022-11-16 11:11:39,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2022-11-16 11:11:39,200 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:11:39,201 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:39,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:11:39,201 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:11:39,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:39,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1940279612, now seen corresponding path program 1 times [2022-11-16 11:11:39,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:39,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455454716] [2022-11-16 11:11:39,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:39,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:39,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:40,255 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 439 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-11-16 11:11:40,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:40,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455454716] [2022-11-16 11:11:40,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455454716] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:40,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:40,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:11:40,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746430167] [2022-11-16 11:11:40,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:40,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:11:40,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:40,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:11:40,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:11:40,259 INFO L87 Difference]: Start difference. First operand 87871 states and 95757 transitions. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 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) [2022-11-16 11:11:44,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:11:44,839 INFO L93 Difference]: Finished difference Result 195266 states and 213075 transitions. [2022-11-16 11:11:44,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:11:44,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 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 527 [2022-11-16 11:11:44,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:11:44,953 INFO L225 Difference]: With dead ends: 195266 [2022-11-16 11:11:44,953 INFO L226 Difference]: Without dead ends: 108148 [2022-11-16 11:11:44,975 INFO L412 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 [2022-11-16 11:11:44,976 INFO L413 NwaCegarLoop]: 1282 mSDtfsCounter, 581 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2331 mSolverCounterSat, 422 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 2753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 422 IncrementalHoareTripleChecker+Valid, 2331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:11:44,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [581 Valid, 1290 Invalid, 2753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [422 Valid, 2331 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-16 11:11:45,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108148 states. [2022-11-16 11:11:46,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108148 to 105144. [2022-11-16 11:11:46,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105144 states, 105143 states have (on average 1.0826683659397203) internal successors, (113835), 105143 states have internal predecessors, (113835), 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) [2022-11-16 11:11:46,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105144 states to 105144 states and 113835 transitions. [2022-11-16 11:11:46,292 INFO L78 Accepts]: Start accepts. Automaton has 105144 states and 113835 transitions. Word has length 527 [2022-11-16 11:11:46,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:11:46,293 INFO L495 AbstractCegarLoop]: Abstraction has 105144 states and 113835 transitions. [2022-11-16 11:11:46,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 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) [2022-11-16 11:11:46,293 INFO L276 IsEmpty]: Start isEmpty. Operand 105144 states and 113835 transitions. [2022-11-16 11:11:46,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 574 [2022-11-16 11:11:46,308 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:11:46,309 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:46,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:11:46,309 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:11:46,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:46,310 INFO L85 PathProgramCache]: Analyzing trace with hash 2553455, now seen corresponding path program 1 times [2022-11-16 11:11:46,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:46,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138508508] [2022-11-16 11:11:46,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:46,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:46,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:46,952 INFO L134 CoverageAnalysis]: Checked inductivity of 907 backedges. 294 proven. 0 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2022-11-16 11:11:46,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:46,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138508508] [2022-11-16 11:11:46,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138508508] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:46,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:46,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:11:46,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129141113] [2022-11-16 11:11:46,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:46,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:11:46,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:46,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:11:46,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:11:46,955 INFO L87 Difference]: Start difference. First operand 105144 states and 113835 transitions. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 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) [2022-11-16 11:11:51,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:11:51,119 INFO L93 Difference]: Finished difference Result 210286 states and 227772 transitions. [2022-11-16 11:11:51,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:11:51,120 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 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 573 [2022-11-16 11:11:51,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:11:51,252 INFO L225 Difference]: With dead ends: 210286 [2022-11-16 11:11:51,253 INFO L226 Difference]: Without dead ends: 105895 [2022-11-16 11:11:51,302 INFO L412 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 [2022-11-16 11:11:51,303 INFO L413 NwaCegarLoop]: 1108 mSDtfsCounter, 806 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2195 mSolverCounterSat, 340 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 1116 SdHoareTripleChecker+Invalid, 2535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 340 IncrementalHoareTripleChecker+Valid, 2195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:11:51,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 1116 Invalid, 2535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [340 Valid, 2195 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-16 11:11:51,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105895 states. [2022-11-16 11:11:52,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105895 to 105895. [2022-11-16 11:11:52,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105895 states, 105894 states have (on average 1.070391145862844) internal successors, (113348), 105894 states have internal predecessors, (113348), 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) [2022-11-16 11:11:52,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105895 states to 105895 states and 113348 transitions. [2022-11-16 11:11:52,853 INFO L78 Accepts]: Start accepts. Automaton has 105895 states and 113348 transitions. Word has length 573 [2022-11-16 11:11:52,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:11:52,853 INFO L495 AbstractCegarLoop]: Abstraction has 105895 states and 113348 transitions. [2022-11-16 11:11:52,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 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) [2022-11-16 11:11:52,854 INFO L276 IsEmpty]: Start isEmpty. Operand 105895 states and 113348 transitions. [2022-11-16 11:11:52,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2022-11-16 11:11:52,871 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:11:52,872 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:11:52,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:11:52,872 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:11:52,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:11:52,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1602236886, now seen corresponding path program 1 times [2022-11-16 11:11:52,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:11:52,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695998683] [2022-11-16 11:11:52,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:11:52,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:11:52,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:11:54,071 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 667 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-11-16 11:11:54,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:11:54,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695998683] [2022-11-16 11:11:54,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695998683] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:11:54,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:11:54,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:11:54,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194605079] [2022-11-16 11:11:54,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:11:54,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:11:54,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:11:54,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:11:54,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:11:54,077 INFO L87 Difference]: Start difference. First operand 105895 states and 113348 transitions. Second operand has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 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) [2022-11-16 11:11:58,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:11:58,613 INFO L93 Difference]: Finished difference Result 214792 states and 229744 transitions. [2022-11-16 11:11:58,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:11:58,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 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 600 [2022-11-16 11:11:58,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:11:58,742 INFO L225 Difference]: With dead ends: 214792 [2022-11-16 11:11:58,742 INFO L226 Difference]: Without dead ends: 109650 [2022-11-16 11:11:58,792 INFO L412 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 [2022-11-16 11:11:58,792 INFO L413 NwaCegarLoop]: 1265 mSDtfsCounter, 591 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2393 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 1273 SdHoareTripleChecker+Invalid, 2653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 2393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:11:58,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [591 Valid, 1273 Invalid, 2653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 2393 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-16 11:11:58,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109650 states. [2022-11-16 11:12:00,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109650 to 106646. [2022-11-16 11:12:00,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106646 states, 106645 states have (on average 1.060518542829012) internal successors, (113099), 106645 states have internal predecessors, (113099), 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) [2022-11-16 11:12:00,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106646 states to 106646 states and 113099 transitions. [2022-11-16 11:12:00,342 INFO L78 Accepts]: Start accepts. Automaton has 106646 states and 113099 transitions. Word has length 600 [2022-11-16 11:12:00,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:12:00,343 INFO L495 AbstractCegarLoop]: Abstraction has 106646 states and 113099 transitions. [2022-11-16 11:12:00,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 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) [2022-11-16 11:12:00,343 INFO L276 IsEmpty]: Start isEmpty. Operand 106646 states and 113099 transitions. [2022-11-16 11:12:00,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2022-11-16 11:12:00,362 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:12:00,362 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-16 11:12:00,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 11:12:00,362 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:12:00,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:00,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1697512307, now seen corresponding path program 1 times [2022-11-16 11:12:00,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:00,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038380366] [2022-11-16 11:12:00,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:00,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:00,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:00,807 INFO L134 CoverageAnalysis]: Checked inductivity of 836 backedges. 711 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2022-11-16 11:12:00,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:00,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038380366] [2022-11-16 11:12:00,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038380366] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:00,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:00,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:12:00,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506529059] [2022-11-16 11:12:00,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:00,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:12:00,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:00,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:12:00,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:12:00,810 INFO L87 Difference]: Start difference. First operand 106646 states and 113099 transitions. Second operand has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 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) [2022-11-16 11:12:05,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:12:05,315 INFO L93 Difference]: Finished difference Result 227559 states and 242182 transitions. [2022-11-16 11:12:05,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:12:05,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 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 622 [2022-11-16 11:12:05,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:12:05,465 INFO L225 Difference]: With dead ends: 227559 [2022-11-16 11:12:05,466 INFO L226 Difference]: Without dead ends: 121666 [2022-11-16 11:12:05,509 INFO L412 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 [2022-11-16 11:12:05,509 INFO L413 NwaCegarLoop]: 1286 mSDtfsCounter, 602 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2250 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 1294 SdHoareTripleChecker+Invalid, 2557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 2250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:12:05,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [602 Valid, 1294 Invalid, 2557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 2250 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-16 11:12:05,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121666 states. [2022-11-16 11:12:06,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121666 to 115658. [2022-11-16 11:12:06,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115658 states, 115657 states have (on average 1.0552063428932101) internal successors, (122042), 115657 states have internal predecessors, (122042), 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) [2022-11-16 11:12:07,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115658 states to 115658 states and 122042 transitions. [2022-11-16 11:12:07,013 INFO L78 Accepts]: Start accepts. Automaton has 115658 states and 122042 transitions. Word has length 622 [2022-11-16 11:12:07,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:12:07,014 INFO L495 AbstractCegarLoop]: Abstraction has 115658 states and 122042 transitions. [2022-11-16 11:12:07,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 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) [2022-11-16 11:12:07,014 INFO L276 IsEmpty]: Start isEmpty. Operand 115658 states and 122042 transitions. [2022-11-16 11:12:07,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2022-11-16 11:12:07,025 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:12:07,025 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:12:07,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 11:12:07,025 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:12:07,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:07,026 INFO L85 PathProgramCache]: Analyzing trace with hash 328629557, now seen corresponding path program 1 times [2022-11-16 11:12:07,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:07,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107498466] [2022-11-16 11:12:07,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:07,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:07,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:08,288 INFO L134 CoverageAnalysis]: Checked inductivity of 885 backedges. 741 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-16 11:12:08,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:08,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107498466] [2022-11-16 11:12:08,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107498466] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:08,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:08,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:12:08,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079039239] [2022-11-16 11:12:08,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:08,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:12:08,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:08,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:12:08,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:12:08,291 INFO L87 Difference]: Start difference. First operand 115658 states and 122042 transitions. Second operand has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 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) [2022-11-16 11:12:12,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:12:12,344 INFO L93 Difference]: Finished difference Result 234318 states and 247183 transitions. [2022-11-16 11:12:12,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:12:12,344 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 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 637 [2022-11-16 11:12:12,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:12:12,467 INFO L225 Difference]: With dead ends: 234318 [2022-11-16 11:12:12,467 INFO L226 Difference]: Without dead ends: 119413 [2022-11-16 11:12:12,515 INFO L412 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 [2022-11-16 11:12:12,516 INFO L413 NwaCegarLoop]: 1335 mSDtfsCounter, 595 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2182 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 1343 SdHoareTripleChecker+Invalid, 2463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 2182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:12:12,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [595 Valid, 1343 Invalid, 2463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 2182 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-16 11:12:12,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119413 states. [2022-11-16 11:12:14,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119413 to 117160. [2022-11-16 11:12:14,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117160 states, 117159 states have (on average 1.0535596923838544) internal successors, (123434), 117159 states have internal predecessors, (123434), 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) [2022-11-16 11:12:14,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117160 states to 117160 states and 123434 transitions. [2022-11-16 11:12:14,565 INFO L78 Accepts]: Start accepts. Automaton has 117160 states and 123434 transitions. Word has length 637 [2022-11-16 11:12:14,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:12:14,566 INFO L495 AbstractCegarLoop]: Abstraction has 117160 states and 123434 transitions. [2022-11-16 11:12:14,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 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) [2022-11-16 11:12:14,566 INFO L276 IsEmpty]: Start isEmpty. Operand 117160 states and 123434 transitions. [2022-11-16 11:12:14,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2022-11-16 11:12:14,578 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:12:14,578 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:12:14,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 11:12:14,579 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:12:14,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:14,579 INFO L85 PathProgramCache]: Analyzing trace with hash -984613049, now seen corresponding path program 1 times [2022-11-16 11:12:14,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:14,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014043968] [2022-11-16 11:12:14,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:14,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:14,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:15,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1074 backedges. 953 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-11-16 11:12:15,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:15,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014043968] [2022-11-16 11:12:15,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014043968] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:15,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:12:15,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:12:15,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793187143] [2022-11-16 11:12:15,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:15,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:12:15,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:15,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:12:15,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:12:15,238 INFO L87 Difference]: Start difference. First operand 117160 states and 123434 transitions. Second operand has 4 states, 4 states have (on average 134.25) internal successors, (537), 4 states have internal predecessors, (537), 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) [2022-11-16 11:12:21,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:12:21,411 INFO L93 Difference]: Finished difference Result 243330 states and 256346 transitions. [2022-11-16 11:12:21,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:12:21,411 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 134.25) internal successors, (537), 4 states have internal predecessors, (537), 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 656 [2022-11-16 11:12:21,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:12:21,576 INFO L225 Difference]: With dead ends: 243330 [2022-11-16 11:12:21,576 INFO L226 Difference]: Without dead ends: 126172 [2022-11-16 11:12:21,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:12:21,619 INFO L413 NwaCegarLoop]: 1286 mSDtfsCounter, 1328 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 3954 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1328 SdHoareTripleChecker+Valid, 1300 SdHoareTripleChecker+Invalid, 4221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 3954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:12:21,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1328 Valid, 1300 Invalid, 4221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 3954 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-16 11:12:21,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126172 states. [2022-11-16 11:12:23,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126172 to 126172. [2022-11-16 11:12:23,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126172 states, 126171 states have (on average 1.0508753992597348) internal successors, (132590), 126171 states have internal predecessors, (132590), 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) [2022-11-16 11:12:23,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126172 states to 126172 states and 132590 transitions. [2022-11-16 11:12:23,505 INFO L78 Accepts]: Start accepts. Automaton has 126172 states and 132590 transitions. Word has length 656 [2022-11-16 11:12:23,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:12:23,505 INFO L495 AbstractCegarLoop]: Abstraction has 126172 states and 132590 transitions. [2022-11-16 11:12:23,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.25) internal successors, (537), 4 states have internal predecessors, (537), 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) [2022-11-16 11:12:23,506 INFO L276 IsEmpty]: Start isEmpty. Operand 126172 states and 132590 transitions. [2022-11-16 11:12:23,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 745 [2022-11-16 11:12:23,539 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:12:23,540 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:12:23,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 11:12:23,540 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:12:23,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:12:23,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1541879315, now seen corresponding path program 1 times [2022-11-16 11:12:23,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:12:23,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561747961] [2022-11-16 11:12:23,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:23,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:12:23,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:25,233 INFO L134 CoverageAnalysis]: Checked inductivity of 781 backedges. 453 proven. 108 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-11-16 11:12:25,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:12:25,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561747961] [2022-11-16 11:12:25,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561747961] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:12:25,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898783524] [2022-11-16 11:12:25,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:12:25,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:12:25,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3035361a-1ec9-42d2-82fc-ba1dc99d3849/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:12:25,235 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3035361a-1ec9-42d2-82fc-ba1dc99d3849/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:12:25,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3035361a-1ec9-42d2-82fc-ba1dc99d3849/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:12:25,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:12:25,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 917 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:12:25,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:12:26,106 INFO L134 CoverageAnalysis]: Checked inductivity of 781 backedges. 462 proven. 0 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2022-11-16 11:12:26,107 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:12:26,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898783524] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:12:26,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:12:26,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-16 11:12:26,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085880451] [2022-11-16 11:12:26,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:12:26,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:12:26,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:12:26,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:12:26,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:12:26,110 INFO L87 Difference]: Start difference. First operand 126172 states and 132590 transitions. Second operand has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 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)