./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label05.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/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_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label05.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/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_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/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 38d85b6b5a04cb96dc69842531ed31487f7945c34d1c701c72adfae91c235e8c --- 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 12:47:36,194 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:47:36,196 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:47:36,225 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:47:36,232 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:47:36,236 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:47:36,238 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:47:36,240 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:47:36,242 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:47:36,243 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:47:36,244 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:47:36,245 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:47:36,245 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:47:36,246 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:47:36,247 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:47:36,248 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:47:36,249 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:47:36,250 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:47:36,251 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:47:36,253 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:47:36,254 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:47:36,256 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:47:36,257 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:47:36,258 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:47:36,261 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:47:36,261 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:47:36,262 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:47:36,262 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:47:36,263 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:47:36,264 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:47:36,264 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:47:36,265 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:47:36,265 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:47:36,266 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:47:36,267 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:47:36,267 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:47:36,268 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:47:36,268 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:47:36,269 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:47:36,270 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:47:36,270 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:47:36,271 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:47:36,294 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:47:36,294 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:47:36,295 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:47:36,295 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:47:36,296 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:47:36,296 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:47:36,297 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:47:36,297 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:47:36,297 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:47:36,297 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:47:36,297 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:47:36,297 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:47:36,298 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:47:36,298 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:47:36,298 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:47:36,298 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:47:36,298 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:47:36,298 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:47:36,299 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:47:36,299 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:47:36,299 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:47:36,299 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:47:36,299 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:47:36,300 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:47:36,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:47:36,300 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:47:36,300 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:47:36,300 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:47:36,300 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:47:36,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:47:36,301 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:47:36,301 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:47:36,301 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:47:36,301 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_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 38d85b6b5a04cb96dc69842531ed31487f7945c34d1c701c72adfae91c235e8c [2022-11-16 12:47:36,605 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:47:36,644 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:47:36,647 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:47:36,649 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:47:36,650 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:47:36,651 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label05.c [2022-11-16 12:47:36,738 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/bin/uautomizer-tPACEb0tL8/data/474e4a8c6/ae0dddf0704b4f09a2a0ba2f29b9541a/FLAG4d3afaed5 [2022-11-16 12:47:37,546 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:47:37,546 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label05.c [2022-11-16 12:47:37,586 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/bin/uautomizer-tPACEb0tL8/data/474e4a8c6/ae0dddf0704b4f09a2a0ba2f29b9541a/FLAG4d3afaed5 [2022-11-16 12:47:38,068 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/bin/uautomizer-tPACEb0tL8/data/474e4a8c6/ae0dddf0704b4f09a2a0ba2f29b9541a [2022-11-16 12:47:38,071 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:47:38,072 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:47:38,074 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:47:38,079 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:47:38,085 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:47:38,085 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:47:38" (1/1) ... [2022-11-16 12:47:38,086 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@683f2ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:47:38, skipping insertion in model container [2022-11-16 12:47:38,086 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:47:38" (1/1) ... [2022-11-16 12:47:38,092 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:47:38,220 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:47:38,567 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_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label05.c[8749,8762] [2022-11-16 12:47:38,625 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_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label05.c[15685,15698] [2022-11-16 12:47:39,468 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:47:39,479 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:47:39,514 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_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label05.c[8749,8762] [2022-11-16 12:47:39,533 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_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/sv-benchmarks/c/combinations/pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label05.c[15685,15698] [2022-11-16 12:47:40,110 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:47:40,140 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:47:40,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:47:40 WrapperNode [2022-11-16 12:47:40,140 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:47:40,142 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:47:40,142 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:47:40,142 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:47:40,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:47:40" (1/1) ... [2022-11-16 12:47:40,216 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:47:40" (1/1) ... [2022-11-16 12:47:40,539 INFO L138 Inliner]: procedures = 36, calls = 21, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 5016 [2022-11-16 12:47:40,540 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:47:40,541 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:47:40,541 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:47:40,541 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:47:40,551 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:47:40" (1/1) ... [2022-11-16 12:47:40,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:47:40" (1/1) ... [2022-11-16 12:47:40,672 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:47:40" (1/1) ... [2022-11-16 12:47:40,677 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:47:40" (1/1) ... [2022-11-16 12:47:40,847 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:47:40" (1/1) ... [2022-11-16 12:47:40,944 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:47:40" (1/1) ... [2022-11-16 12:47:41,023 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:47:40" (1/1) ... [2022-11-16 12:47:41,039 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:47:40" (1/1) ... [2022-11-16 12:47:41,121 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:47:41,124 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:47:41,124 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:47:41,124 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:47:41,139 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:47:40" (1/1) ... [2022-11-16 12:47:41,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:47:41,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:47:41,213 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:47:41,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:47:41,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:47:41,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:47:41,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:47:41,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:47:41,487 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:47:41,489 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:47:46,782 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:47:46,817 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:47:46,817 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 12:47:46,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:47:46 BoogieIcfgContainer [2022-11-16 12:47:46,823 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:47:46,825 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:47:46,835 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:47:46,851 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:47:46,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:47:38" (1/3) ... [2022-11-16 12:47:46,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33a3272f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:47:46, skipping insertion in model container [2022-11-16 12:47:46,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:47:40" (2/3) ... [2022-11-16 12:47:46,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33a3272f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:47:46, skipping insertion in model container [2022-11-16 12:47:46,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:47:46" (3/3) ... [2022-11-16 12:47:46,855 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.UNBOUNDED.pals+Problem12_label05.c [2022-11-16 12:47:46,882 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:47:46,882 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-16 12:47:46,991 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:47:47,000 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;@4995c78a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:47:47,000 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-16 12:47:47,009 INFO L276 IsEmpty]: Start isEmpty. Operand has 887 states, 884 states have (on average 1.9049773755656108) internal successors, (1684), 886 states have internal predecessors, (1684), 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 12:47:47,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-16 12:47:47,019 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:47:47,020 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:47:47,020 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:47:47,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:47,026 INFO L85 PathProgramCache]: Analyzing trace with hash 593970293, now seen corresponding path program 1 times [2022-11-16 12:47:47,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:47,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647355009] [2022-11-16 12:47:47,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:47,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:47,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:47,287 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 12:47:47,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:47,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647355009] [2022-11-16 12:47:47,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647355009] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:47,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:47,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:47:47,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601285773] [2022-11-16 12:47:47,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:47,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:47:47,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:47,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:47:47,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:47:47,340 INFO L87 Difference]: Start difference. First operand has 887 states, 884 states have (on average 1.9049773755656108) internal successors, (1684), 886 states have internal predecessors, (1684), 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 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 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 12:47:47,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:47:47,480 INFO L93 Difference]: Finished difference Result 1743 states and 3312 transitions. [2022-11-16 12:47:47,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:47:47,483 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 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 22 [2022-11-16 12:47:47,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:47:47,500 INFO L225 Difference]: With dead ends: 1743 [2022-11-16 12:47:47,500 INFO L226 Difference]: Without dead ends: 821 [2022-11-16 12:47:47,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:47:47,510 INFO L413 NwaCegarLoop]: 1615 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:47:47,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1615 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:47:47,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2022-11-16 12:47:47,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 821. [2022-11-16 12:47:47,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 819 states have (on average 1.8937728937728937) internal successors, (1551), 820 states have internal predecessors, (1551), 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 12:47:47,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1551 transitions. [2022-11-16 12:47:47,617 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1551 transitions. Word has length 22 [2022-11-16 12:47:47,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:47:47,618 INFO L495 AbstractCegarLoop]: Abstraction has 821 states and 1551 transitions. [2022-11-16 12:47:47,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 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 12:47:47,618 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1551 transitions. [2022-11-16 12:47:47,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-16 12:47:47,619 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:47:47,619 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:47:47,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:47:47,620 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:47:47,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:47,621 INFO L85 PathProgramCache]: Analyzing trace with hash -427098061, now seen corresponding path program 1 times [2022-11-16 12:47:47,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:47,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700726961] [2022-11-16 12:47:47,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:47,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:47,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:47,851 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 12:47:47,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:47,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700726961] [2022-11-16 12:47:47,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700726961] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:47,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:47,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:47:47,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899123424] [2022-11-16 12:47:47,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:47,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:47:47,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:47,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:47:47,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:47:47,855 INFO L87 Difference]: Start difference. First operand 821 states and 1551 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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 12:47:48,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:47:48,001 INFO L93 Difference]: Finished difference Result 863 states and 1615 transitions. [2022-11-16 12:47:48,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:47:48,002 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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 22 [2022-11-16 12:47:48,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:47:48,008 INFO L225 Difference]: With dead ends: 863 [2022-11-16 12:47:48,009 INFO L226 Difference]: Without dead ends: 821 [2022-11-16 12:47:48,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:47:48,014 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 3 mSDsluCounter, 4621 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6170 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:47:48,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6170 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:47:48,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2022-11-16 12:47:48,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 821. [2022-11-16 12:47:48,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 819 states have (on average 1.8656898656898657) internal successors, (1528), 820 states have internal predecessors, (1528), 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 12:47:48,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1528 transitions. [2022-11-16 12:47:48,055 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1528 transitions. Word has length 22 [2022-11-16 12:47:48,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:47:48,055 INFO L495 AbstractCegarLoop]: Abstraction has 821 states and 1528 transitions. [2022-11-16 12:47:48,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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 12:47:48,057 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1528 transitions. [2022-11-16 12:47:48,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-16 12:47:48,066 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:47:48,067 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:47:48,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:47:48,067 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:47:48,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:48,069 INFO L85 PathProgramCache]: Analyzing trace with hash 3301806, now seen corresponding path program 1 times [2022-11-16 12:47:48,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:48,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087950469] [2022-11-16 12:47:48,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:48,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:48,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:48,337 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 12:47:48,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:48,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087950469] [2022-11-16 12:47:48,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087950469] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:48,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:48,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:47:48,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745067765] [2022-11-16 12:47:48,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:48,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:47:48,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:48,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:47:48,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:47:48,342 INFO L87 Difference]: Start difference. First operand 821 states and 1528 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:48,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:47:48,585 INFO L93 Difference]: Finished difference Result 1125 states and 2008 transitions. [2022-11-16 12:47:48,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:47:48,586 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2022-11-16 12:47:48,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:47:48,591 INFO L225 Difference]: With dead ends: 1125 [2022-11-16 12:47:48,591 INFO L226 Difference]: Without dead ends: 1087 [2022-11-16 12:47:48,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:47:48,600 INFO L413 NwaCegarLoop]: 1522 mSDtfsCounter, 6285 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6285 SdHoareTripleChecker+Valid, 2135 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:47:48,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6285 Valid, 2135 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:47:48,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2022-11-16 12:47:48,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 857. [2022-11-16 12:47:48,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 857 states, 855 states have (on average 1.8538011695906433) internal successors, (1585), 856 states have internal predecessors, (1585), 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 12:47:48,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 1585 transitions. [2022-11-16 12:47:48,633 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 1585 transitions. Word has length 44 [2022-11-16 12:47:48,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:47:48,634 INFO L495 AbstractCegarLoop]: Abstraction has 857 states and 1585 transitions. [2022-11-16 12:47:48,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:47:48,634 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 1585 transitions. [2022-11-16 12:47:48,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-16 12:47:48,638 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:47:48,638 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:47:48,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:47:48,639 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:47:48,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:48,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1757336638, now seen corresponding path program 1 times [2022-11-16 12:47:48,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:48,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864862643] [2022-11-16 12:47:48,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:48,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:48,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:48,727 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 12:47:48,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:48,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864862643] [2022-11-16 12:47:48,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864862643] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:48,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:48,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:47:48,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942662600] [2022-11-16 12:47:48,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:48,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:47:48,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:48,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:47:48,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:47:48,730 INFO L87 Difference]: Start difference. First operand 857 states and 1585 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 12:47:48,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:47:48,786 INFO L93 Difference]: Finished difference Result 994 states and 1800 transitions. [2022-11-16 12:47:48,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:47:48,787 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 46 [2022-11-16 12:47:48,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:47:48,791 INFO L225 Difference]: With dead ends: 994 [2022-11-16 12:47:48,791 INFO L226 Difference]: Without dead ends: 920 [2022-11-16 12:47:48,792 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 12:47:48,793 INFO L413 NwaCegarLoop]: 1524 mSDtfsCounter, 1476 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 1577 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:47:48,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 1577 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:47:48,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2022-11-16 12:47:48,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 916. [2022-11-16 12:47:48,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 914 states have (on average 1.8326039387308535) internal successors, (1675), 915 states have internal predecessors, (1675), 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 12:47:48,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1675 transitions. [2022-11-16 12:47:48,824 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1675 transitions. Word has length 46 [2022-11-16 12:47:48,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:47:48,824 INFO L495 AbstractCegarLoop]: Abstraction has 916 states and 1675 transitions. [2022-11-16 12:47:48,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 12:47:48,825 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1675 transitions. [2022-11-16 12:47:48,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-16 12:47:48,825 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:47:48,826 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:47:48,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:47:48,826 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:47:48,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:48,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1823830150, now seen corresponding path program 1 times [2022-11-16 12:47:48,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:48,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674523524] [2022-11-16 12:47:48,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:48,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:48,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:49,112 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 12:47:49,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:49,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674523524] [2022-11-16 12:47:49,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674523524] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:49,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:49,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:47:49,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973202573] [2022-11-16 12:47:49,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:49,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:47:49,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:49,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:47:49,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:47:49,117 INFO L87 Difference]: Start difference. First operand 916 states and 1675 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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 12:47:49,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:47:49,295 INFO L93 Difference]: Finished difference Result 1051 states and 1883 transitions. [2022-11-16 12:47:49,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:47:49,296 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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 46 [2022-11-16 12:47:49,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:47:49,302 INFO L225 Difference]: With dead ends: 1051 [2022-11-16 12:47:49,302 INFO L226 Difference]: Without dead ends: 918 [2022-11-16 12:47:49,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:47:49,304 INFO L413 NwaCegarLoop]: 1522 mSDtfsCounter, 6008 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6008 SdHoareTripleChecker+Valid, 1690 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:47:49,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6008 Valid, 1690 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:47:49,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2022-11-16 12:47:49,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 916. [2022-11-16 12:47:49,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 914 states have (on average 1.8304157549234135) internal successors, (1673), 915 states have internal predecessors, (1673), 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 12:47:49,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1673 transitions. [2022-11-16 12:47:49,338 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1673 transitions. Word has length 46 [2022-11-16 12:47:49,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:47:49,343 INFO L495 AbstractCegarLoop]: Abstraction has 916 states and 1673 transitions. [2022-11-16 12:47:49,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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 12:47:49,344 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1673 transitions. [2022-11-16 12:47:49,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-16 12:47:49,344 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:47:49,344 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:47:49,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:47:49,345 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:47:49,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:49,348 INFO L85 PathProgramCache]: Analyzing trace with hash 289436656, now seen corresponding path program 1 times [2022-11-16 12:47:49,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:49,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070906333] [2022-11-16 12:47:49,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:49,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:49,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:49,617 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 12:47:49,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:49,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070906333] [2022-11-16 12:47:49,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070906333] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:49,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:49,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:47:49,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062943913] [2022-11-16 12:47:49,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:49,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:47:49,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:49,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:47:49,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:47:49,620 INFO L87 Difference]: Start difference. First operand 916 states and 1673 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 12:47:49,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:47:49,737 INFO L93 Difference]: Finished difference Result 1045 states and 1867 transitions. [2022-11-16 12:47:49,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:47:49,738 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 47 [2022-11-16 12:47:49,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:47:49,742 INFO L225 Difference]: With dead ends: 1045 [2022-11-16 12:47:49,743 INFO L226 Difference]: Without dead ends: 1043 [2022-11-16 12:47:49,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:47:49,748 INFO L413 NwaCegarLoop]: 1578 mSDtfsCounter, 151 mSDsluCounter, 4586 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 6164 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:47:49,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 6164 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:47:49,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2022-11-16 12:47:49,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 922. [2022-11-16 12:47:49,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 922 states, 920 states have (on average 1.8239130434782609) internal successors, (1678), 921 states have internal predecessors, (1678), 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 12:47:49,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1678 transitions. [2022-11-16 12:47:49,821 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1678 transitions. Word has length 47 [2022-11-16 12:47:49,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:47:49,822 INFO L495 AbstractCegarLoop]: Abstraction has 922 states and 1678 transitions. [2022-11-16 12:47:49,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 12:47:49,822 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1678 transitions. [2022-11-16 12:47:49,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-16 12:47:49,823 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:47:49,823 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:47:49,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:47:49,824 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:47:49,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:49,824 INFO L85 PathProgramCache]: Analyzing trace with hash -2036800602, now seen corresponding path program 1 times [2022-11-16 12:47:49,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:49,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61719777] [2022-11-16 12:47:49,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:49,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:49,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:49,873 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 12:47:49,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:49,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61719777] [2022-11-16 12:47:49,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61719777] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:49,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:49,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:47:49,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213236097] [2022-11-16 12:47:49,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:49,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:47:49,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:49,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:47:49,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:47:49,876 INFO L87 Difference]: Start difference. First operand 922 states and 1678 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 12:47:49,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:47:49,931 INFO L93 Difference]: Finished difference Result 1184 states and 2070 transitions. [2022-11-16 12:47:49,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:47:49,932 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 48 [2022-11-16 12:47:49,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:47:49,936 INFO L225 Difference]: With dead ends: 1184 [2022-11-16 12:47:49,936 INFO L226 Difference]: Without dead ends: 1045 [2022-11-16 12:47:49,937 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 12:47:49,938 INFO L413 NwaCegarLoop]: 1565 mSDtfsCounter, 1487 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1487 SdHoareTripleChecker+Valid, 1630 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:47:49,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1487 Valid, 1630 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:47:49,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2022-11-16 12:47:49,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 1043. [2022-11-16 12:47:49,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1043 states, 1041 states have (on average 1.781940441882805) internal successors, (1855), 1042 states have internal predecessors, (1855), 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 12:47:49,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1855 transitions. [2022-11-16 12:47:49,983 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1855 transitions. Word has length 48 [2022-11-16 12:47:49,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:47:49,983 INFO L495 AbstractCegarLoop]: Abstraction has 1043 states and 1855 transitions. [2022-11-16 12:47:49,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 12:47:49,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1855 transitions. [2022-11-16 12:47:49,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-16 12:47:49,985 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:47:49,985 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:47:49,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:47:49,985 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:47:49,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:49,986 INFO L85 PathProgramCache]: Analyzing trace with hash 42697894, now seen corresponding path program 1 times [2022-11-16 12:47:49,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:49,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894059208] [2022-11-16 12:47:49,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:49,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:50,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:50,033 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 12:47:50,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:50,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894059208] [2022-11-16 12:47:50,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894059208] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:50,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:50,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:47:50,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328894073] [2022-11-16 12:47:50,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:50,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:47:50,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:50,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:47:50,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:47:50,036 INFO L87 Difference]: Start difference. First operand 1043 states and 1855 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 12:47:50,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:47:50,115 INFO L93 Difference]: Finished difference Result 1531 states and 2573 transitions. [2022-11-16 12:47:50,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:47:50,115 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 48 [2022-11-16 12:47:50,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:47:50,120 INFO L225 Difference]: With dead ends: 1531 [2022-11-16 12:47:50,121 INFO L226 Difference]: Without dead ends: 1271 [2022-11-16 12:47:50,122 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 12:47:50,122 INFO L413 NwaCegarLoop]: 1563 mSDtfsCounter, 1485 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 1632 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:47:50,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1485 Valid, 1632 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:47:50,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1271 states. [2022-11-16 12:47:50,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1271 to 1269. [2022-11-16 12:47:50,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1269 states, 1267 states have (on average 1.718232044198895) internal successors, (2177), 1268 states have internal predecessors, (2177), 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 12:47:50,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 2177 transitions. [2022-11-16 12:47:50,190 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 2177 transitions. Word has length 48 [2022-11-16 12:47:50,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:47:50,190 INFO L495 AbstractCegarLoop]: Abstraction has 1269 states and 2177 transitions. [2022-11-16 12:47:50,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 12:47:50,190 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 2177 transitions. [2022-11-16 12:47:50,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-16 12:47:50,191 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:47:50,191 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:47:50,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:47:50,192 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:47:50,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:50,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1823630758, now seen corresponding path program 1 times [2022-11-16 12:47:50,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:50,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048579559] [2022-11-16 12:47:50,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:50,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:50,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:50,237 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 12:47:50,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:50,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048579559] [2022-11-16 12:47:50,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048579559] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:50,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:50,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:47:50,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603353728] [2022-11-16 12:47:50,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:50,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:47:50,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:50,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:47:50,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:47:50,240 INFO L87 Difference]: Start difference. First operand 1269 states and 2177 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 12:47:50,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:47:50,366 INFO L93 Difference]: Finished difference Result 2177 states and 3483 transitions. [2022-11-16 12:47:50,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:47:50,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 48 [2022-11-16 12:47:50,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:47:50,373 INFO L225 Difference]: With dead ends: 2177 [2022-11-16 12:47:50,374 INFO L226 Difference]: Without dead ends: 1691 [2022-11-16 12:47:50,375 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 12:47:50,376 INFO L413 NwaCegarLoop]: 1561 mSDtfsCounter, 1483 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1483 SdHoareTripleChecker+Valid, 1634 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:47:50,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1483 Valid, 1634 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:47:50,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1691 states. [2022-11-16 12:47:50,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1691 to 1689. [2022-11-16 12:47:50,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1689 states, 1687 states have (on average 1.6342620035566093) internal successors, (2757), 1688 states have internal predecessors, (2757), 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 12:47:50,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1689 states to 1689 states and 2757 transitions. [2022-11-16 12:47:50,497 INFO L78 Accepts]: Start accepts. Automaton has 1689 states and 2757 transitions. Word has length 48 [2022-11-16 12:47:50,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:47:50,498 INFO L495 AbstractCegarLoop]: Abstraction has 1689 states and 2757 transitions. [2022-11-16 12:47:50,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 12:47:50,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1689 states and 2757 transitions. [2022-11-16 12:47:50,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-16 12:47:50,499 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:47:50,499 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:47:50,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:47:50,499 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:47:50,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:50,500 INFO L85 PathProgramCache]: Analyzing trace with hash 246335073, now seen corresponding path program 1 times [2022-11-16 12:47:50,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:50,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530966052] [2022-11-16 12:47:50,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:50,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:50,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:50,546 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 12:47:50,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:50,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530966052] [2022-11-16 12:47:50,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530966052] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:50,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:50,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:47:50,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637499386] [2022-11-16 12:47:50,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:50,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:47:50,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:50,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:47:50,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:47:50,549 INFO L87 Difference]: Start difference. First operand 1689 states and 2757 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 12:47:50,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:47:50,834 INFO L93 Difference]: Finished difference Result 2656 states and 4155 transitions. [2022-11-16 12:47:50,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:47:50,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 50 [2022-11-16 12:47:50,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:47:50,843 INFO L225 Difference]: With dead ends: 2656 [2022-11-16 12:47:50,844 INFO L226 Difference]: Without dead ends: 2125 [2022-11-16 12:47:50,845 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 12:47:50,846 INFO L413 NwaCegarLoop]: 1570 mSDtfsCounter, 1486 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:47:50,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 1631 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:47:50,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2125 states. [2022-11-16 12:47:51,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2125 to 2123. [2022-11-16 12:47:51,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2123 states, 2121 states have (on average 1.5836869401225837) internal successors, (3359), 2122 states have internal predecessors, (3359), 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 12:47:51,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2123 states to 2123 states and 3359 transitions. [2022-11-16 12:47:51,096 INFO L78 Accepts]: Start accepts. Automaton has 2123 states and 3359 transitions. Word has length 50 [2022-11-16 12:47:51,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:47:51,097 INFO L495 AbstractCegarLoop]: Abstraction has 2123 states and 3359 transitions. [2022-11-16 12:47:51,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 12:47:51,097 INFO L276 IsEmpty]: Start isEmpty. Operand 2123 states and 3359 transitions. [2022-11-16 12:47:51,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-16 12:47:51,098 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:47:51,099 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:47:51,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:47:51,099 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:47:51,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:47:51,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1981431461, now seen corresponding path program 1 times [2022-11-16 12:47:51,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:47:51,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095859252] [2022-11-16 12:47:51,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:47:51,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:47:51,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:47:51,314 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 12:47:51,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:47:51,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095859252] [2022-11-16 12:47:51,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095859252] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:47:51,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:47:51,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:47:51,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413175600] [2022-11-16 12:47:51,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:47:51,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:47:51,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:47:51,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:47:51,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:47:51,317 INFO L87 Difference]: Start difference. First operand 2123 states and 3359 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 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 12:48:00,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:48:00,184 INFO L93 Difference]: Finished difference Result 4378 states and 7668 transitions. [2022-11-16 12:48:00,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:48:00,185 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 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 60 [2022-11-16 12:48:00,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:48:00,197 INFO L225 Difference]: With dead ends: 4378 [2022-11-16 12:48:00,197 INFO L226 Difference]: Without dead ends: 3625 [2022-11-16 12:48:00,199 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 12:48:00,200 INFO L413 NwaCegarLoop]: 764 mSDtfsCounter, 2371 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5354 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2371 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 6507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:48:00,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2371 Valid, 782 Invalid, 6507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 5354 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2022-11-16 12:48:00,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3625 states. [2022-11-16 12:48:00,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3625 to 3625. [2022-11-16 12:48:00,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3625 states, 3623 states have (on average 1.5106265525807343) internal successors, (5473), 3624 states have internal predecessors, (5473), 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 12:48:00,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3625 states to 3625 states and 5473 transitions. [2022-11-16 12:48:00,432 INFO L78 Accepts]: Start accepts. Automaton has 3625 states and 5473 transitions. Word has length 60 [2022-11-16 12:48:00,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:48:00,432 INFO L495 AbstractCegarLoop]: Abstraction has 3625 states and 5473 transitions. [2022-11-16 12:48:00,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 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 12:48:00,433 INFO L276 IsEmpty]: Start isEmpty. Operand 3625 states and 5473 transitions. [2022-11-16 12:48:00,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 12:48:00,434 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:48:00,434 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:48:00,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:48:00,435 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:48:00,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:48:00,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1523853909, now seen corresponding path program 1 times [2022-11-16 12:48:00,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:48:00,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064096608] [2022-11-16 12:48:00,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:00,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:48:00,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:00,614 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 12:48:00,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:48:00,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064096608] [2022-11-16 12:48:00,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064096608] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:48:00,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:48:00,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:48:00,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583313808] [2022-11-16 12:48:00,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:48:00,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:48:00,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:48:00,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:48:00,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:48:00,618 INFO L87 Difference]: Start difference. First operand 3625 states and 5473 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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 12:48:01,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:48:01,459 INFO L93 Difference]: Finished difference Result 9275 states and 13430 transitions. [2022-11-16 12:48:01,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:48:01,460 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-16 12:48:01,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:48:01,506 INFO L225 Difference]: With dead ends: 9275 [2022-11-16 12:48:01,506 INFO L226 Difference]: Without dead ends: 7937 [2022-11-16 12:48:01,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:48:01,511 INFO L413 NwaCegarLoop]: 1582 mSDtfsCounter, 4664 mSDsluCounter, 1786 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4664 SdHoareTripleChecker+Valid, 3368 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:48:01,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4664 Valid, 3368 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:48:01,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7937 states. [2022-11-16 12:48:01,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7937 to 4961. [2022-11-16 12:48:01,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4961 states, 4959 states have (on average 1.4795321637426901) internal successors, (7337), 4960 states have internal predecessors, (7337), 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 12:48:01,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4961 states to 4961 states and 7337 transitions. [2022-11-16 12:48:01,959 INFO L78 Accepts]: Start accepts. Automaton has 4961 states and 7337 transitions. Word has length 65 [2022-11-16 12:48:01,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:48:01,959 INFO L495 AbstractCegarLoop]: Abstraction has 4961 states and 7337 transitions. [2022-11-16 12:48:01,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 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 12:48:01,959 INFO L276 IsEmpty]: Start isEmpty. Operand 4961 states and 7337 transitions. [2022-11-16 12:48:01,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 12:48:01,961 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:48:01,961 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:48:01,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 12:48:01,961 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:48:01,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:48:01,962 INFO L85 PathProgramCache]: Analyzing trace with hash 555644587, now seen corresponding path program 1 times [2022-11-16 12:48:01,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:48:01,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209383672] [2022-11-16 12:48:01,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:01,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:48:01,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:02,112 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 12:48:02,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:48:02,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209383672] [2022-11-16 12:48:02,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209383672] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:48:02,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:48:02,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:48:02,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334872611] [2022-11-16 12:48:02,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:48:02,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:48:02,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:48:02,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:48:02,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:48:02,114 INFO L87 Difference]: Start difference. First operand 4961 states and 7337 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 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 12:48:03,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:48:03,204 INFO L93 Difference]: Finished difference Result 10611 states and 15294 transitions. [2022-11-16 12:48:03,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:48:03,205 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-16 12:48:03,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:48:03,224 INFO L225 Difference]: With dead ends: 10611 [2022-11-16 12:48:03,224 INFO L226 Difference]: Without dead ends: 9273 [2022-11-16 12:48:03,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:48:03,230 INFO L413 NwaCegarLoop]: 1579 mSDtfsCounter, 4693 mSDsluCounter, 1724 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4693 SdHoareTripleChecker+Valid, 3303 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:48:03,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4693 Valid, 3303 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:48:03,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9273 states. [2022-11-16 12:48:03,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9273 to 6969. [2022-11-16 12:48:04,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6969 states, 6967 states have (on average 1.451557341753983) internal successors, (10113), 6968 states have internal predecessors, (10113), 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 12:48:04,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6969 states to 6969 states and 10113 transitions. [2022-11-16 12:48:04,033 INFO L78 Accepts]: Start accepts. Automaton has 6969 states and 10113 transitions. Word has length 65 [2022-11-16 12:48:04,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:48:04,034 INFO L495 AbstractCegarLoop]: Abstraction has 6969 states and 10113 transitions. [2022-11-16 12:48:04,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 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 12:48:04,034 INFO L276 IsEmpty]: Start isEmpty. Operand 6969 states and 10113 transitions. [2022-11-16 12:48:04,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 12:48:04,036 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:48:04,036 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:48:04,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 12:48:04,036 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:48:04,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:48:04,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1958389845, now seen corresponding path program 1 times [2022-11-16 12:48:04,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:48:04,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204714107] [2022-11-16 12:48:04,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:04,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:48:04,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:04,178 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 12:48:04,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:48:04,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204714107] [2022-11-16 12:48:04,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204714107] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:48:04,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:48:04,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:48:04,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456641075] [2022-11-16 12:48:04,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:48:04,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:48:04,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:48:04,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:48:04,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:48:04,181 INFO L87 Difference]: Start difference. First operand 6969 states and 10113 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:05,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:48:05,073 INFO L93 Difference]: Finished difference Result 11947 states and 17158 transitions. [2022-11-16 12:48:05,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:48:05,073 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-16 12:48:05,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:48:05,096 INFO L225 Difference]: With dead ends: 11947 [2022-11-16 12:48:05,097 INFO L226 Difference]: Without dead ends: 10609 [2022-11-16 12:48:05,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:48:05,102 INFO L413 NwaCegarLoop]: 1581 mSDtfsCounter, 4674 mSDsluCounter, 1756 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4674 SdHoareTripleChecker+Valid, 3337 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:48:05,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4674 Valid, 3337 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:48:05,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10609 states. [2022-11-16 12:48:05,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10609 to 8305. [2022-11-16 12:48:05,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8305 states, 8303 states have (on average 1.4424906660243286) internal successors, (11977), 8304 states have internal predecessors, (11977), 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 12:48:05,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8305 states to 8305 states and 11977 transitions. [2022-11-16 12:48:05,777 INFO L78 Accepts]: Start accepts. Automaton has 8305 states and 11977 transitions. Word has length 65 [2022-11-16 12:48:05,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:48:05,777 INFO L495 AbstractCegarLoop]: Abstraction has 8305 states and 11977 transitions. [2022-11-16 12:48:05,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:05,778 INFO L276 IsEmpty]: Start isEmpty. Operand 8305 states and 11977 transitions. [2022-11-16 12:48:05,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-16 12:48:05,780 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:48:05,780 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 12:48:05,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 12:48:05,781 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:48:05,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:48:05,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1188964029, now seen corresponding path program 1 times [2022-11-16 12:48:05,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:48:05,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905090543] [2022-11-16 12:48:05,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:05,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:48:05,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:05,878 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:48:05,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:48:05,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905090543] [2022-11-16 12:48:05,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905090543] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:48:05,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:48:05,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:48:05,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133138013] [2022-11-16 12:48:05,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:48:05,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:48:05,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:48:05,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:48:05,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:48:05,880 INFO L87 Difference]: Start difference. First operand 8305 states and 11977 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 12:48:06,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:48:06,539 INFO L93 Difference]: Finished difference Result 12647 states and 18118 transitions. [2022-11-16 12:48:06,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:48:06,539 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 67 [2022-11-16 12:48:06,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:48:06,553 INFO L225 Difference]: With dead ends: 12647 [2022-11-16 12:48:06,553 INFO L226 Difference]: Without dead ends: 6629 [2022-11-16 12:48:06,560 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 12:48:06,561 INFO L413 NwaCegarLoop]: 1560 mSDtfsCounter, 42 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 3073 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:48:06,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 3073 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:48:06,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6629 states. [2022-11-16 12:48:07,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6629 to 6627. [2022-11-16 12:48:07,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6627 states, 6625 states have (on average 1.4567547169811321) internal successors, (9651), 6626 states have internal predecessors, (9651), 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 12:48:07,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6627 states to 6627 states and 9651 transitions. [2022-11-16 12:48:07,038 INFO L78 Accepts]: Start accepts. Automaton has 6627 states and 9651 transitions. Word has length 67 [2022-11-16 12:48:07,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:48:07,039 INFO L495 AbstractCegarLoop]: Abstraction has 6627 states and 9651 transitions. [2022-11-16 12:48:07,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 12:48:07,039 INFO L276 IsEmpty]: Start isEmpty. Operand 6627 states and 9651 transitions. [2022-11-16 12:48:07,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-16 12:48:07,040 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:48:07,040 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:48:07,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 12:48:07,040 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:48:07,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:48:07,041 INFO L85 PathProgramCache]: Analyzing trace with hash -733131994, now seen corresponding path program 1 times [2022-11-16 12:48:07,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:48:07,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335963966] [2022-11-16 12:48:07,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:07,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:48:07,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:07,223 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:48:07,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:48:07,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335963966] [2022-11-16 12:48:07,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335963966] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:48:07,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:48:07,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:48:07,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034328532] [2022-11-16 12:48:07,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:48:07,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:48:07,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:48:07,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:48:07,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:48:07,225 INFO L87 Difference]: Start difference. First operand 6627 states and 9651 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 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 12:48:07,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:48:07,993 INFO L93 Difference]: Finished difference Result 10477 states and 15096 transitions. [2022-11-16 12:48:07,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:48:07,994 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 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 67 [2022-11-16 12:48:07,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:48:08,012 INFO L225 Difference]: With dead ends: 10477 [2022-11-16 12:48:08,012 INFO L226 Difference]: Without dead ends: 9515 [2022-11-16 12:48:08,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:48:08,017 INFO L413 NwaCegarLoop]: 1577 mSDtfsCounter, 4666 mSDsluCounter, 1827 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4666 SdHoareTripleChecker+Valid, 3404 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:48:08,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4666 Valid, 3404 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:48:08,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9515 states. [2022-11-16 12:48:08,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9515 to 7587. [2022-11-16 12:48:08,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7587 states, 7585 states have (on average 1.4495715227422545) internal successors, (10995), 7586 states have internal predecessors, (10995), 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 12:48:08,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7587 states to 7587 states and 10995 transitions. [2022-11-16 12:48:08,805 INFO L78 Accepts]: Start accepts. Automaton has 7587 states and 10995 transitions. Word has length 67 [2022-11-16 12:48:08,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:48:08,806 INFO L495 AbstractCegarLoop]: Abstraction has 7587 states and 10995 transitions. [2022-11-16 12:48:08,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 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 12:48:08,806 INFO L276 IsEmpty]: Start isEmpty. Operand 7587 states and 10995 transitions. [2022-11-16 12:48:08,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-16 12:48:08,808 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:48:08,808 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:48:08,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 12:48:08,809 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:48:08,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:48:08,809 INFO L85 PathProgramCache]: Analyzing trace with hash 548136257, now seen corresponding path program 1 times [2022-11-16 12:48:08,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:48:08,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884194463] [2022-11-16 12:48:08,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:08,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:48:08,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:08,909 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:48:08,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:48:08,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884194463] [2022-11-16 12:48:08,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884194463] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:48:08,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:48:08,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:48:08,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348749488] [2022-11-16 12:48:08,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:48:08,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:48:08,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:48:08,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:48:08,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:48:08,912 INFO L87 Difference]: Start difference. First operand 7587 states and 10995 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:09,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:48:09,251 INFO L93 Difference]: Finished difference Result 10231 states and 14693 transitions. [2022-11-16 12:48:09,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:48:09,252 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-11-16 12:48:09,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:48:09,261 INFO L225 Difference]: With dead ends: 10231 [2022-11-16 12:48:09,262 INFO L226 Difference]: Without dead ends: 4949 [2022-11-16 12:48:09,267 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 12:48:09,268 INFO L413 NwaCegarLoop]: 1553 mSDtfsCounter, 37 mSDsluCounter, 1505 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3058 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:48:09,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 3058 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:48:09,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4949 states. [2022-11-16 12:48:09,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4949 to 4947. [2022-11-16 12:48:09,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4947 states, 4945 states have (on average 1.4671385237613752) internal successors, (7255), 4946 states have internal predecessors, (7255), 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 12:48:09,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4947 states to 4947 states and 7255 transitions. [2022-11-16 12:48:09,773 INFO L78 Accepts]: Start accepts. Automaton has 4947 states and 7255 transitions. Word has length 68 [2022-11-16 12:48:09,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:48:09,773 INFO L495 AbstractCegarLoop]: Abstraction has 4947 states and 7255 transitions. [2022-11-16 12:48:09,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:09,774 INFO L276 IsEmpty]: Start isEmpty. Operand 4947 states and 7255 transitions. [2022-11-16 12:48:09,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-16 12:48:09,775 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:48:09,775 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:48:09,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 12:48:09,775 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:48:09,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:48:09,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1967598547, now seen corresponding path program 1 times [2022-11-16 12:48:09,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:48:09,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478745805] [2022-11-16 12:48:09,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:09,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:48:09,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:09,903 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:48:09,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:48:09,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478745805] [2022-11-16 12:48:09,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478745805] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:48:09,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:48:09,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:48:09,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2515095] [2022-11-16 12:48:09,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:48:09,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:48:09,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:48:09,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:48:09,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:48:09,905 INFO L87 Difference]: Start difference. First operand 4947 states and 7255 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 12:48:10,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:48:10,077 INFO L93 Difference]: Finished difference Result 6271 states and 9083 transitions. [2022-11-16 12:48:10,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:48:10,078 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-11-16 12:48:10,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:48:10,082 INFO L225 Difference]: With dead ends: 6271 [2022-11-16 12:48:10,082 INFO L226 Difference]: Without dead ends: 3629 [2022-11-16 12:48:10,085 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 12:48:10,085 INFO L413 NwaCegarLoop]: 1546 mSDtfsCounter, 34 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3043 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:48:10,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3043 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:48:10,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3629 states. [2022-11-16 12:48:10,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3629 to 3627. [2022-11-16 12:48:10,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3627 states, 3625 states have (on average 1.4915862068965517) internal successors, (5407), 3626 states have internal predecessors, (5407), 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 12:48:10,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3627 states to 3627 states and 5407 transitions. [2022-11-16 12:48:10,327 INFO L78 Accepts]: Start accepts. Automaton has 3627 states and 5407 transitions. Word has length 70 [2022-11-16 12:48:10,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:48:10,327 INFO L495 AbstractCegarLoop]: Abstraction has 3627 states and 5407 transitions. [2022-11-16 12:48:10,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 12:48:10,327 INFO L276 IsEmpty]: Start isEmpty. Operand 3627 states and 5407 transitions. [2022-11-16 12:48:10,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-16 12:48:10,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:48:10,328 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 12:48:10,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 12:48:10,329 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:48:10,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:48:10,329 INFO L85 PathProgramCache]: Analyzing trace with hash -673918747, now seen corresponding path program 1 times [2022-11-16 12:48:10,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:48:10,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077828986] [2022-11-16 12:48:10,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:10,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:48:10,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:10,423 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:48:10,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:48:10,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077828986] [2022-11-16 12:48:10,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077828986] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:48:10,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:48:10,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:48:10,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272086351] [2022-11-16 12:48:10,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:48:10,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:48:10,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:48:10,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:48:10,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:48:10,427 INFO L87 Difference]: Start difference. First operand 3627 states and 5407 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 12:48:10,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:48:10,559 INFO L93 Difference]: Finished difference Result 4291 states and 6311 transitions. [2022-11-16 12:48:10,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:48:10,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 72 [2022-11-16 12:48:10,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:48:10,563 INFO L225 Difference]: With dead ends: 4291 [2022-11-16 12:48:10,563 INFO L226 Difference]: Without dead ends: 2969 [2022-11-16 12:48:10,565 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 12:48:10,566 INFO L413 NwaCegarLoop]: 1539 mSDtfsCounter, 31 mSDsluCounter, 1489 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3028 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:48:10,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3028 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:48:10,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2969 states. [2022-11-16 12:48:10,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2969 to 2967. [2022-11-16 12:48:10,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2967 states, 2965 states have (on average 1.5156829679595278) internal successors, (4494), 2966 states have internal predecessors, (4494), 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 12:48:10,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2967 states to 2967 states and 4494 transitions. [2022-11-16 12:48:10,793 INFO L78 Accepts]: Start accepts. Automaton has 2967 states and 4494 transitions. Word has length 72 [2022-11-16 12:48:10,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:48:10,793 INFO L495 AbstractCegarLoop]: Abstraction has 2967 states and 4494 transitions. [2022-11-16 12:48:10,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 12:48:10,794 INFO L276 IsEmpty]: Start isEmpty. Operand 2967 states and 4494 transitions. [2022-11-16 12:48:10,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-16 12:48:10,795 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:48:10,795 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:48:10,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 12:48:10,796 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:48:10,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:48:10,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1516893303, now seen corresponding path program 1 times [2022-11-16 12:48:10,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:48:10,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009137319] [2022-11-16 12:48:10,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:10,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:48:10,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:12,643 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:48:12,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:48:12,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009137319] [2022-11-16 12:48:12,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009137319] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:48:12,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227911788] [2022-11-16 12:48:12,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:12,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:48:12,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:48:12,651 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:48:12,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:48:12,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:12,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:48:12,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:48:13,204 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:48:13,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:48:13,413 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:48:13,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227911788] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:48:13,413 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:48:13,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 4, 4] total 17 [2022-11-16 12:48:13,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198521152] [2022-11-16 12:48:13,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:48:13,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-16 12:48:13,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:48:13,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-16 12:48:13,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:48:13,415 INFO L87 Difference]: Start difference. First operand 2967 states and 4494 transitions. Second operand has 17 states, 17 states have (on average 12.058823529411764) internal successors, (205), 17 states have internal predecessors, (205), 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 12:48:18,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:48:18,689 INFO L93 Difference]: Finished difference Result 9702 states and 13279 transitions. [2022-11-16 12:48:18,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-16 12:48:18,690 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 12.058823529411764) internal successors, (205), 17 states have internal predecessors, (205), 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 74 [2022-11-16 12:48:18,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:48:18,698 INFO L225 Difference]: With dead ends: 9702 [2022-11-16 12:48:18,698 INFO L226 Difference]: Without dead ends: 9040 [2022-11-16 12:48:18,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1330 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=812, Invalid=3610, Unknown=0, NotChecked=0, Total=4422 [2022-11-16 12:48:18,703 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 18772 mSDsluCounter, 4877 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18772 SdHoareTripleChecker+Valid, 6393 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:48:18,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18772 Valid, 6393 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 12:48:18,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9040 states. [2022-11-16 12:48:19,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9040 to 7120. [2022-11-16 12:48:19,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7120 states, 7118 states have (on average 1.3699072773250913) internal successors, (9751), 7119 states have internal predecessors, (9751), 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 12:48:19,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7120 states to 7120 states and 9751 transitions. [2022-11-16 12:48:19,647 INFO L78 Accepts]: Start accepts. Automaton has 7120 states and 9751 transitions. Word has length 74 [2022-11-16 12:48:19,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:48:19,647 INFO L495 AbstractCegarLoop]: Abstraction has 7120 states and 9751 transitions. [2022-11-16 12:48:19,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 12.058823529411764) internal successors, (205), 17 states have internal predecessors, (205), 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 12:48:19,648 INFO L276 IsEmpty]: Start isEmpty. Operand 7120 states and 9751 transitions. [2022-11-16 12:48:19,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-16 12:48:19,649 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:48:19,649 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 12:48:19,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:48:19,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:48:19,855 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:48:19,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:48:19,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1010952072, now seen corresponding path program 1 times [2022-11-16 12:48:19,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:48:19,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013176732] [2022-11-16 12:48:19,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:19,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:48:19,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:20,259 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:48:20,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:48:20,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013176732] [2022-11-16 12:48:20,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013176732] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:48:20,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307953932] [2022-11-16 12:48:20,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:20,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:48:20,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:48:20,262 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:48:20,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:48:20,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:20,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 12:48:20,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:48:21,055 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:48:21,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:48:21,838 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:48:21,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307953932] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:48:21,839 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:48:21,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2022-11-16 12:48:21,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302512971] [2022-11-16 12:48:21,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:48:21,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-16 12:48:21,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:48:21,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-16 12:48:21,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2022-11-16 12:48:21,841 INFO L87 Difference]: Start difference. First operand 7120 states and 9751 transitions. Second operand has 24 states, 24 states have (on average 7.625) internal successors, (183), 23 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:26,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:48:26,475 INFO L93 Difference]: Finished difference Result 21037 states and 27645 transitions. [2022-11-16 12:48:26,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-16 12:48:26,475 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 7.625) internal successors, (183), 23 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-11-16 12:48:26,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:48:26,491 INFO L225 Difference]: With dead ends: 21037 [2022-11-16 12:48:26,491 INFO L226 Difference]: Without dead ends: 16264 [2022-11-16 12:48:26,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=627, Invalid=2343, Unknown=0, NotChecked=0, Total=2970 [2022-11-16 12:48:26,498 INFO L413 NwaCegarLoop]: 1544 mSDtfsCounter, 17940 mSDsluCounter, 8217 mSDsCounter, 0 mSdLazyCounter, 876 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17940 SdHoareTripleChecker+Valid, 9761 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:48:26,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17940 Valid, 9761 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 876 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 12:48:26,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16264 states. [2022-11-16 12:48:28,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16264 to 13446. [2022-11-16 12:48:28,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13446 states, 13444 states have (on average 1.3099523951204999) internal successors, (17611), 13445 states have internal predecessors, (17611), 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 12:48:28,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13446 states to 13446 states and 17611 transitions. [2022-11-16 12:48:28,164 INFO L78 Accepts]: Start accepts. Automaton has 13446 states and 17611 transitions. Word has length 75 [2022-11-16 12:48:28,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:48:28,165 INFO L495 AbstractCegarLoop]: Abstraction has 13446 states and 17611 transitions. [2022-11-16 12:48:28,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 7.625) internal successors, (183), 23 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:48:28,165 INFO L276 IsEmpty]: Start isEmpty. Operand 13446 states and 17611 transitions. [2022-11-16 12:48:28,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-16 12:48:28,166 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:48:28,167 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:48:28,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:48:28,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:48:28,377 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:48:28,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:48:28,378 INFO L85 PathProgramCache]: Analyzing trace with hash -2028388102, now seen corresponding path program 1 times [2022-11-16 12:48:28,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:48:28,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685746151] [2022-11-16 12:48:28,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:28,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:48:28,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:28,825 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:48:28,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:48:28,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685746151] [2022-11-16 12:48:28,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685746151] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:48:28,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202971268] [2022-11-16 12:48:28,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:28,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:48:28,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:48:28,827 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:48:28,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:48:28,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:28,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 12:48:28,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:48:29,654 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:48:29,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:48:30,720 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:48:30,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202971268] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:48:30,721 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:48:30,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2022-11-16 12:48:30,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113982409] [2022-11-16 12:48:30,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:48:30,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:48:30,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:48:30,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:48:30,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:48:30,723 INFO L87 Difference]: Start difference. First operand 13446 states and 17611 transitions. Second operand has 23 states, 23 states have (on average 7.782608695652174) internal successors, (179), 22 states have internal predecessors, (179), 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 12:48:34,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:48:34,329 INFO L93 Difference]: Finished difference Result 26231 states and 33292 transitions. [2022-11-16 12:48:34,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:48:34,331 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 7.782608695652174) internal successors, (179), 22 states have internal predecessors, (179), 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 75 [2022-11-16 12:48:34,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:48:34,351 INFO L225 Difference]: With dead ends: 26231 [2022-11-16 12:48:34,351 INFO L226 Difference]: Without dead ends: 16921 [2022-11-16 12:48:34,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=291, Invalid=831, Unknown=0, NotChecked=0, Total=1122 [2022-11-16 12:48:34,359 INFO L413 NwaCegarLoop]: 1514 mSDtfsCounter, 16920 mSDsluCounter, 4694 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16920 SdHoareTripleChecker+Valid, 6208 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:48:34,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16920 Valid, 6208 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:48:34,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16921 states. [2022-11-16 12:48:36,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16921 to 13042. [2022-11-16 12:48:36,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13042 states, 13040 states have (on average 1.2971625766871167) internal successors, (16915), 13041 states have internal predecessors, (16915), 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 12:48:36,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13042 states to 13042 states and 16915 transitions. [2022-11-16 12:48:36,490 INFO L78 Accepts]: Start accepts. Automaton has 13042 states and 16915 transitions. Word has length 75 [2022-11-16 12:48:36,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:48:36,490 INFO L495 AbstractCegarLoop]: Abstraction has 13042 states and 16915 transitions. [2022-11-16 12:48:36,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.782608695652174) internal successors, (179), 22 states have internal predecessors, (179), 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 12:48:36,491 INFO L276 IsEmpty]: Start isEmpty. Operand 13042 states and 16915 transitions. [2022-11-16 12:48:36,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-16 12:48:36,492 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:48:36,493 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:48:36,498 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-16 12:48:36,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:48:36,698 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:48:36,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:48:36,698 INFO L85 PathProgramCache]: Analyzing trace with hash -268185879, now seen corresponding path program 1 times [2022-11-16 12:48:36,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:48:36,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842663987] [2022-11-16 12:48:36,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:36,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:48:36,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:37,109 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:48:37,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:48:37,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842663987] [2022-11-16 12:48:37,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842663987] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:48:37,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129571930] [2022-11-16 12:48:37,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:37,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:48:37,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:48:37,111 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:48:37,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:48:37,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:37,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-16 12:48:37,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:48:38,285 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:48:38,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:48:39,549 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:48:39,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129571930] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:48:39,550 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:48:39,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2022-11-16 12:48:39,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099087762] [2022-11-16 12:48:39,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:48:39,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-16 12:48:39,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:48:39,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-16 12:48:39,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=621, Unknown=0, NotChecked=0, Total=756 [2022-11-16 12:48:39,552 INFO L87 Difference]: Start difference. First operand 13042 states and 16915 transitions. Second operand has 28 states, 28 states have (on average 7.0) internal successors, (196), 28 states have internal predecessors, (196), 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 12:48:47,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:48:47,129 INFO L93 Difference]: Finished difference Result 41743 states and 52199 transitions. [2022-11-16 12:48:47,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 12:48:47,130 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 7.0) internal successors, (196), 28 states have internal predecessors, (196), 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 76 [2022-11-16 12:48:47,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:48:47,164 INFO L225 Difference]: With dead ends: 41743 [2022-11-16 12:48:47,164 INFO L226 Difference]: Without dead ends: 32369 [2022-11-16 12:48:47,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=451, Invalid=1441, Unknown=0, NotChecked=0, Total=1892 [2022-11-16 12:48:47,173 INFO L413 NwaCegarLoop]: 1537 mSDtfsCounter, 8006 mSDsluCounter, 6597 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8006 SdHoareTripleChecker+Valid, 8134 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:48:47,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8006 Valid, 8134 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 647 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 12:48:47,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32369 states. [2022-11-16 12:48:52,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32369 to 23830. [2022-11-16 12:48:52,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23830 states, 23828 states have (on average 1.2583095517878127) internal successors, (29983), 23829 states have internal predecessors, (29983), 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 12:48:52,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23830 states to 23830 states and 29983 transitions. [2022-11-16 12:48:52,228 INFO L78 Accepts]: Start accepts. Automaton has 23830 states and 29983 transitions. Word has length 76 [2022-11-16 12:48:52,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:48:52,228 INFO L495 AbstractCegarLoop]: Abstraction has 23830 states and 29983 transitions. [2022-11-16 12:48:52,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 7.0) internal successors, (196), 28 states have internal predecessors, (196), 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 12:48:52,229 INFO L276 IsEmpty]: Start isEmpty. Operand 23830 states and 29983 transitions. [2022-11-16 12:48:52,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-16 12:48:52,230 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:48:52,231 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:48:52,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:48:52,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-16 12:48:52,431 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:48:52,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:48:52,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1113650506, now seen corresponding path program 1 times [2022-11-16 12:48:52,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:48:52,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638682067] [2022-11-16 12:48:52,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:52,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:48:52,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:53,602 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:48:53,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:48:53,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638682067] [2022-11-16 12:48:53,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638682067] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:48:53,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91263096] [2022-11-16 12:48:53,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:48:53,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:48:53,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:48:53,605 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:48:53,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:48:53,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:53,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-16 12:48:53,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:48:55,037 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:48:55,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:48:58,159 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:48:58,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91263096] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:48:58,160 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:48:58,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 16] total 40 [2022-11-16 12:48:58,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647745614] [2022-11-16 12:48:58,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:48:58,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-16 12:48:58,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:48:58,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-16 12:48:58,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1398, Unknown=0, NotChecked=0, Total=1560 [2022-11-16 12:48:58,162 INFO L87 Difference]: Start difference. First operand 23830 states and 29983 transitions. Second operand has 40 states, 40 states have (on average 5.375) internal successors, (215), 40 states have internal predecessors, (215), 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 12:49:35,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:49:35,712 INFO L93 Difference]: Finished difference Result 63944 states and 78197 transitions. [2022-11-16 12:49:35,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2022-11-16 12:49:35,712 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 5.375) internal successors, (215), 40 states have internal predecessors, (215), 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 77 [2022-11-16 12:49:35,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:49:35,781 INFO L225 Difference]: With dead ends: 63944 [2022-11-16 12:49:35,781 INFO L226 Difference]: Without dead ends: 52750 [2022-11-16 12:49:35,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 122 SyntacticMatches, 5 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9568 ImplicationChecksByTransitivity, 20.6s TimeCoverageRelationStatistics Valid=5342, Invalid=20098, Unknown=0, NotChecked=0, Total=25440 [2022-11-16 12:49:35,797 INFO L413 NwaCegarLoop]: 1630 mSDtfsCounter, 20421 mSDsluCounter, 22928 mSDsCounter, 0 mSdLazyCounter, 2194 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20421 SdHoareTripleChecker+Valid, 24558 SdHoareTripleChecker+Invalid, 2342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 2194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:49:35,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20421 Valid, 24558 Invalid, 2342 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [148 Valid, 2194 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-16 12:49:35,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52750 states. [2022-11-16 12:49:41,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52750 to 20463. [2022-11-16 12:49:41,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20463 states, 20461 states have (on average 1.2584428913542838) internal successors, (25749), 20462 states have internal predecessors, (25749), 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 12:49:41,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20463 states to 20463 states and 25749 transitions. [2022-11-16 12:49:41,422 INFO L78 Accepts]: Start accepts. Automaton has 20463 states and 25749 transitions. Word has length 77 [2022-11-16 12:49:41,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:49:41,423 INFO L495 AbstractCegarLoop]: Abstraction has 20463 states and 25749 transitions. [2022-11-16 12:49:41,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 5.375) internal successors, (215), 40 states have internal predecessors, (215), 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 12:49:41,423 INFO L276 IsEmpty]: Start isEmpty. Operand 20463 states and 25749 transitions. [2022-11-16 12:49:41,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-16 12:49:41,424 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:49:41,424 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:49:41,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:49:41,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-16 12:49:41,625 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:49:41,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:49:41,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1164449718, now seen corresponding path program 1 times [2022-11-16 12:49:41,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:49:41,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307351111] [2022-11-16 12:49:41,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:49:41,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:49:41,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:49:43,349 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:49:43,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:49:43,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307351111] [2022-11-16 12:49:43,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307351111] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:49:43,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292916168] [2022-11-16 12:49:43,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:49:43,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:49:43,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:49:43,351 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:49:43,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:49:43,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:49:43,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 12:49:43,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:49:44,497 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:49:44,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:49:47,638 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:49:47,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292916168] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:49:47,638 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:49:47,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12, 12] total 39 [2022-11-16 12:49:47,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160375531] [2022-11-16 12:49:47,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:49:47,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-16 12:49:47,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:49:47,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-16 12:49:47,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1351, Unknown=0, NotChecked=0, Total=1482 [2022-11-16 12:49:47,641 INFO L87 Difference]: Start difference. First operand 20463 states and 25749 transitions. Second operand has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 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 12:50:15,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:50:15,384 INFO L93 Difference]: Finished difference Result 45272 states and 55998 transitions. [2022-11-16 12:50:15,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-11-16 12:50:15,385 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 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 77 [2022-11-16 12:50:15,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:50:15,417 INFO L225 Difference]: With dead ends: 45272 [2022-11-16 12:50:15,417 INFO L226 Difference]: Without dead ends: 32674 [2022-11-16 12:50:15,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 127 SyntacticMatches, 7 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4717 ImplicationChecksByTransitivity, 16.9s TimeCoverageRelationStatistics Valid=2624, Invalid=12382, Unknown=0, NotChecked=0, Total=15006 [2022-11-16 12:50:15,429 INFO L413 NwaCegarLoop]: 1597 mSDtfsCounter, 16512 mSDsluCounter, 25820 mSDsCounter, 0 mSdLazyCounter, 2779 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16512 SdHoareTripleChecker+Valid, 27417 SdHoareTripleChecker+Invalid, 2869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 2779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:50:15,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16512 Valid, 27417 Invalid, 2869 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [90 Valid, 2779 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-16 12:50:15,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32674 states. [2022-11-16 12:50:19,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32674 to 12436. [2022-11-16 12:50:19,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12436 states, 12434 states have (on average 1.286150876628599) internal successors, (15992), 12435 states have internal predecessors, (15992), 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 12:50:19,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12436 states to 12436 states and 15992 transitions. [2022-11-16 12:50:19,044 INFO L78 Accepts]: Start accepts. Automaton has 12436 states and 15992 transitions. Word has length 77 [2022-11-16 12:50:19,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:50:19,045 INFO L495 AbstractCegarLoop]: Abstraction has 12436 states and 15992 transitions. [2022-11-16 12:50:19,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 4.9743589743589745) internal successors, (194), 39 states have internal predecessors, (194), 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 12:50:19,045 INFO L276 IsEmpty]: Start isEmpty. Operand 12436 states and 15992 transitions. [2022-11-16 12:50:19,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-16 12:50:19,046 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:50:19,046 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 12:50:19,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:50:19,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-16 12:50:19,250 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:50:19,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:50:19,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1650632284, now seen corresponding path program 1 times [2022-11-16 12:50:19,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:50:19,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674641597] [2022-11-16 12:50:19,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:50:19,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:50:19,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:19,836 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:50:19,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:50:19,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674641597] [2022-11-16 12:50:19,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674641597] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:50:19,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636650259] [2022-11-16 12:50:19,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:50:19,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:50:19,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:50:19,839 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:50:19,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 12:50:19,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:19,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-16 12:50:19,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:50:21,866 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:50:21,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:50:26,232 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:50:26,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636650259] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:50:26,233 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:50:26,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 17] total 41 [2022-11-16 12:50:26,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528728820] [2022-11-16 12:50:26,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:50:26,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-16 12:50:26,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:50:26,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-16 12:50:26,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=1427, Unknown=0, NotChecked=0, Total=1640 [2022-11-16 12:50:26,241 INFO L87 Difference]: Start difference. First operand 12436 states and 15992 transitions. Second operand has 41 states, 41 states have (on average 4.902439024390244) internal successors, (201), 41 states have internal predecessors, (201), 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 12:51:00,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:51:00,689 INFO L93 Difference]: Finished difference Result 48441 states and 60338 transitions. [2022-11-16 12:51:00,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-11-16 12:51:00,690 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.902439024390244) internal successors, (201), 41 states have internal predecessors, (201), 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 79 [2022-11-16 12:51:00,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:51:00,739 INFO L225 Difference]: With dead ends: 48441 [2022-11-16 12:51:00,739 INFO L226 Difference]: Without dead ends: 43969 [2022-11-16 12:51:00,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5248 ImplicationChecksByTransitivity, 16.2s TimeCoverageRelationStatistics Valid=2875, Invalid=13381, Unknown=0, NotChecked=0, Total=16256 [2022-11-16 12:51:00,750 INFO L413 NwaCegarLoop]: 1546 mSDtfsCounter, 10273 mSDsluCounter, 22186 mSDsCounter, 0 mSdLazyCounter, 1445 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10273 SdHoareTripleChecker+Valid, 23732 SdHoareTripleChecker+Invalid, 1615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:51:00,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10273 Valid, 23732 Invalid, 1615 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [170 Valid, 1445 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-16 12:51:00,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43969 states. [2022-11-16 12:51:05,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43969 to 12142. [2022-11-16 12:51:05,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12142 states, 12140 states have (on average 1.2891268533772653) internal successors, (15650), 12141 states have internal predecessors, (15650), 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 12:51:05,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12142 states to 12142 states and 15650 transitions. [2022-11-16 12:51:05,174 INFO L78 Accepts]: Start accepts. Automaton has 12142 states and 15650 transitions. Word has length 79 [2022-11-16 12:51:05,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:51:05,174 INFO L495 AbstractCegarLoop]: Abstraction has 12142 states and 15650 transitions. [2022-11-16 12:51:05,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 4.902439024390244) internal successors, (201), 41 states have internal predecessors, (201), 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 12:51:05,174 INFO L276 IsEmpty]: Start isEmpty. Operand 12142 states and 15650 transitions. [2022-11-16 12:51:05,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-16 12:51:05,177 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:51:05,178 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:51:05,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:51:05,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:51:05,384 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:51:05,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:51:05,384 INFO L85 PathProgramCache]: Analyzing trace with hash 2006423867, now seen corresponding path program 1 times [2022-11-16 12:51:05,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:51:05,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112583444] [2022-11-16 12:51:05,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:51:05,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:51:05,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:51:06,765 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 22 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:51:06,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:51:06,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112583444] [2022-11-16 12:51:06,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112583444] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:51:06,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842348665] [2022-11-16 12:51:06,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:51:06,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:51:06,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:51:06,767 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:51:06,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 12:51:06,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:51:06,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-16 12:51:06,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:51:26,012 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 33 proven. 72 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:51:26,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:51:29,332 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 31 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:51:29,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842348665] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:51:29,332 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:51:29,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11, 11] total 39 [2022-11-16 12:51:29,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141518474] [2022-11-16 12:51:29,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:51:29,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-16 12:51:29,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:51:29,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-16 12:51:29,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1413, Unknown=8, NotChecked=0, Total=1560 [2022-11-16 12:51:29,335 INFO L87 Difference]: Start difference. First operand 12142 states and 15650 transitions. Second operand has 40 states, 40 states have (on average 8.625) internal successors, (345), 39 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 12:53:57,596 WARN L233 SmtUtils]: Spent 6.97s on a formula simplification. DAG size of input: 144 DAG size of output: 130 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 12:54:08,127 WARN L233 SmtUtils]: Spent 6.37s on a formula simplification. DAG size of input: 89 DAG size of output: 86 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 13:01:31,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 13:01:31,918 INFO L93 Difference]: Finished difference Result 46119 states and 56897 transitions. [2022-11-16 13:01:31,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2022-11-16 13:01:31,919 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 8.625) internal successors, (345), 39 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 123 [2022-11-16 13:01:31,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 13:01:31,963 INFO L225 Difference]: With dead ends: 46119 [2022-11-16 13:01:31,963 INFO L226 Difference]: Without dead ends: 43303 [2022-11-16 13:01:31,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6156 ImplicationChecksByTransitivity, 588.7s TimeCoverageRelationStatistics Valid=3123, Invalid=16561, Unknown=56, NotChecked=0, Total=19740 [2022-11-16 13:01:31,971 INFO L413 NwaCegarLoop]: 1767 mSDtfsCounter, 22172 mSDsluCounter, 28172 mSDsCounter, 0 mSdLazyCounter, 3296 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22172 SdHoareTripleChecker+Valid, 29939 SdHoareTripleChecker+Invalid, 4222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 3296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 796 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-16 13:01:31,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22172 Valid, 29939 Invalid, 4222 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [130 Valid, 3296 Invalid, 0 Unknown, 796 Unchecked, 5.4s Time] [2022-11-16 13:01:31,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43303 states. [2022-11-16 13:01:42,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43303 to 22469. [2022-11-16 13:01:43,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22469 states, 22467 states have (on average 1.2660791382917167) internal successors, (28445), 22468 states have internal predecessors, (28445), 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 13:01:43,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22469 states to 22469 states and 28445 transitions. [2022-11-16 13:01:43,024 INFO L78 Accepts]: Start accepts. Automaton has 22469 states and 28445 transitions. Word has length 123 [2022-11-16 13:01:43,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 13:01:43,025 INFO L495 AbstractCegarLoop]: Abstraction has 22469 states and 28445 transitions. [2022-11-16 13:01:43,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 8.625) internal successors, (345), 39 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 13:01:43,025 INFO L276 IsEmpty]: Start isEmpty. Operand 22469 states and 28445 transitions. [2022-11-16 13:01:43,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-16 13:01:43,029 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 13:01:43,029 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:01:43,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 13:01:43,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-16 13:01:43,235 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 13:01:43,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 13:01:43,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1715422779, now seen corresponding path program 1 times [2022-11-16 13:01:43,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 13:01:43,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761552355] [2022-11-16 13:01:43,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 13:01:43,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 13:01:43,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 13:01:44,504 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 22 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 13:01:44,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 13:01:44,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761552355] [2022-11-16 13:01:44,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761552355] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 13:01:44,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664591125] [2022-11-16 13:01:44,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 13:01:44,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 13:01:44,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 13:01:44,519 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 13:01:44,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2ef5216-150b-4a9c-9f12-0e0f0b389fb1/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 13:01:44,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 13:01:44,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-16 13:01:44,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 13:01:56,147 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 41 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 13:01:56,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 13:01:59,845 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 39 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 13:01:59,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664591125] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 13:01:59,845 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 13:01:59,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 35 [2022-11-16 13:01:59,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349394771] [2022-11-16 13:01:59,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 13:01:59,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-16 13:01:59,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 13:01:59,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-16 13:01:59,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1134, Unknown=4, NotChecked=0, Total=1260 [2022-11-16 13:01:59,847 INFO L87 Difference]: Start difference. First operand 22469 states and 28445 transitions. Second operand has 36 states, 36 states have (on average 9.416666666666666) internal successors, (339), 35 states have internal predecessors, (339), 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)