./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54badfbd-5b6a-41c1-bf5f-a8a7f5d80f63/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54badfbd-5b6a-41c1-bf5f-a8a7f5d80f63/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54badfbd-5b6a-41c1-bf5f-a8a7f5d80f63/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54badfbd-5b6a-41c1-bf5f-a8a7f5d80f63/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54badfbd-5b6a-41c1-bf5f-a8a7f5d80f63/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54badfbd-5b6a-41c1-bf5f-a8a7f5d80f63/bin/uautomizer-J5u9QxTXDZ --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 7f7a5a1c3d43a07fad050d83cae91745968fcd759f4b97582e892f295162805b --- 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-dbf71c6-m [2022-10-17 11:08:20,173 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 11:08:20,177 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 11:08:20,227 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 11:08:20,228 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 11:08:20,230 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 11:08:20,232 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 11:08:20,235 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 11:08:20,238 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 11:08:20,239 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 11:08:20,241 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 11:08:20,243 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 11:08:20,243 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 11:08:20,245 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 11:08:20,247 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 11:08:20,249 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 11:08:20,250 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 11:08:20,252 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 11:08:20,254 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 11:08:20,257 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 11:08:20,259 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 11:08:20,261 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 11:08:20,263 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 11:08:20,265 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 11:08:20,271 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 11:08:20,271 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 11:08:20,272 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 11:08:20,273 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 11:08:20,274 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 11:08:20,275 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 11:08:20,276 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 11:08:20,277 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 11:08:20,279 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 11:08:20,280 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 11:08:20,281 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 11:08:20,282 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 11:08:20,283 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 11:08:20,283 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 11:08:20,284 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 11:08:20,285 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 11:08:20,286 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 11:08:20,290 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54badfbd-5b6a-41c1-bf5f-a8a7f5d80f63/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 11:08:20,314 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 11:08:20,314 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 11:08:20,315 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 11:08:20,315 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 11:08:20,316 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 11:08:20,317 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 11:08:20,318 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 11:08:20,318 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 11:08:20,318 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 11:08:20,319 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 11:08:20,319 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 11:08:20,320 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 11:08:20,320 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 11:08:20,320 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 11:08:20,321 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 11:08:20,321 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 11:08:20,321 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 11:08:20,321 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 11:08:20,322 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 11:08:20,322 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 11:08:20,322 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 11:08:20,322 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 11:08:20,323 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 11:08:20,323 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 11:08:20,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:08:20,323 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 11:08:20,324 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 11:08:20,324 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 11:08:20,324 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 11:08:20,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 11:08:20,325 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 11:08:20,325 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 11:08:20,325 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 11:08:20,326 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_54badfbd-5b6a-41c1-bf5f-a8a7f5d80f63/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54badfbd-5b6a-41c1-bf5f-a8a7f5d80f63/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f7a5a1c3d43a07fad050d83cae91745968fcd759f4b97582e892f295162805b [2022-10-17 11:08:20,573 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 11:08:20,593 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 11:08:20,596 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 11:08:20,597 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 11:08:20,598 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 11:08:20,599 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54badfbd-5b6a-41c1-bf5f-a8a7f5d80f63/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-10-17 11:08:20,655 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54badfbd-5b6a-41c1-bf5f-a8a7f5d80f63/bin/uautomizer-J5u9QxTXDZ/data/8d73e7066/2363685936f847ed8b02619cc34c1057/FLAG512837b39 [2022-10-17 11:08:21,136 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 11:08:21,136 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54badfbd-5b6a-41c1-bf5f-a8a7f5d80f63/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-10-17 11:08:21,147 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54badfbd-5b6a-41c1-bf5f-a8a7f5d80f63/bin/uautomizer-J5u9QxTXDZ/data/8d73e7066/2363685936f847ed8b02619cc34c1057/FLAG512837b39 [2022-10-17 11:08:21,486 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54badfbd-5b6a-41c1-bf5f-a8a7f5d80f63/bin/uautomizer-J5u9QxTXDZ/data/8d73e7066/2363685936f847ed8b02619cc34c1057 [2022-10-17 11:08:21,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 11:08:21,492 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 11:08:21,497 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 11:08:21,497 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 11:08:21,500 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 11:08:21,501 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:08:21" (1/1) ... [2022-10-17 11:08:21,503 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@153cb21f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:08:21, skipping insertion in model container [2022-10-17 11:08:21,505 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:08:21" (1/1) ... [2022-10-17 11:08:21,512 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 11:08:21,604 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 11:08:21,812 WARN L230 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_54badfbd-5b6a-41c1-bf5f-a8a7f5d80f63/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[5805,5818] [2022-10-17 11:08:21,839 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:08:21,865 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 11:08:21,906 WARN L230 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_54badfbd-5b6a-41c1-bf5f-a8a7f5d80f63/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[5805,5818] [2022-10-17 11:08:21,924 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:08:21,942 INFO L208 MainTranslator]: Completed translation [2022-10-17 11:08:21,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:08:21 WrapperNode [2022-10-17 11:08:21,943 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 11:08:21,944 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 11:08:21,945 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 11:08:21,945 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 11:08:21,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:08:21" (1/1) ... [2022-10-17 11:08:21,963 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:08:21" (1/1) ... [2022-10-17 11:08:21,998 INFO L138 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 413 [2022-10-17 11:08:21,998 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 11:08:21,999 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 11:08:21,999 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 11:08:21,999 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 11:08:22,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:08:21" (1/1) ... [2022-10-17 11:08:22,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:08:21" (1/1) ... [2022-10-17 11:08:22,013 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:08:21" (1/1) ... [2022-10-17 11:08:22,014 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:08:21" (1/1) ... [2022-10-17 11:08:22,022 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:08:21" (1/1) ... [2022-10-17 11:08:22,027 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:08:21" (1/1) ... [2022-10-17 11:08:22,030 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:08:21" (1/1) ... [2022-10-17 11:08:22,032 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:08:21" (1/1) ... [2022-10-17 11:08:22,037 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 11:08:22,053 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 11:08:22,054 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 11:08:22,054 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 11:08:22,055 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:08:21" (1/1) ... [2022-10-17 11:08:22,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:08:22,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54badfbd-5b6a-41c1-bf5f-a8a7f5d80f63/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:08:22,131 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54badfbd-5b6a-41c1-bf5f-a8a7f5d80f63/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 11:08:22,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54badfbd-5b6a-41c1-bf5f-a8a7f5d80f63/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 11:08:22,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 11:08:22,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 11:08:22,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 11:08:22,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 11:08:22,297 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 11:08:22,299 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 11:08:22,934 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 11:08:22,943 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 11:08:22,944 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 11:08:22,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:08:22 BoogieIcfgContainer [2022-10-17 11:08:22,946 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 11:08:22,949 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 11:08:22,949 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 11:08:22,953 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 11:08:22,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 11:08:21" (1/3) ... [2022-10-17 11:08:22,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cdb3b81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:08:22, skipping insertion in model container [2022-10-17 11:08:22,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:08:21" (2/3) ... [2022-10-17 11:08:22,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cdb3b81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:08:22, skipping insertion in model container [2022-10-17 11:08:22,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:08:22" (3/3) ... [2022-10-17 11:08:22,958 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-10-17 11:08:22,978 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 11:08:22,978 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 11:08:23,059 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 11:08:23,065 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;@65359328, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 11:08:23,065 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 11:08:23,070 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 97 states have (on average 1.7216494845360826) internal successors, (167), 98 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:08:23,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-10-17 11:08:23,086 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:08:23,089 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] [2022-10-17 11:08:23,090 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:08:23,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:08:23,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1055716622, now seen corresponding path program 1 times [2022-10-17 11:08:23,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:08:23,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613478353] [2022-10-17 11:08:23,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:08:23,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:08:23,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:08:23,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:08:23,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:08:23,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613478353] [2022-10-17 11:08:23,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613478353] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:08:23,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:08:23,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 11:08:23,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229920360] [2022-10-17 11:08:23,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:08:23,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:08:23,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:08:23,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:08:23,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:08:23,583 INFO L87 Difference]: Start difference. First operand has 99 states, 97 states have (on average 1.7216494845360826) internal successors, (167), 98 states have internal predecessors, (167), 0 states have call successors, (0), 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 3 states, 3 states have (on average 20.0) 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) [2022-10-17 11:08:23,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:08:23,702 INFO L93 Difference]: Finished difference Result 221 states and 356 transitions. [2022-10-17 11:08:23,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:08:23,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) 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 [2022-10-17 11:08:23,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:08:23,719 INFO L225 Difference]: With dead ends: 221 [2022-10-17 11:08:23,719 INFO L226 Difference]: Without dead ends: 150 [2022-10-17 11:08:23,722 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 [2022-10-17 11:08:23,726 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 108 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 11:08:23,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 337 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 11:08:23,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-10-17 11:08:23,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 148. [2022-10-17 11:08:23,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.4625850340136055) internal successors, (215), 147 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) [2022-10-17 11:08:23,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 215 transitions. [2022-10-17 11:08:23,795 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 215 transitions. Word has length 60 [2022-10-17 11:08:23,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:08:23,796 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 215 transitions. [2022-10-17 11:08:23,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) 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) [2022-10-17 11:08:23,797 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 215 transitions. [2022-10-17 11:08:23,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-10-17 11:08:23,799 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:08:23,799 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, 1] [2022-10-17 11:08:23,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 11:08:23,800 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:08:23,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:08:23,801 INFO L85 PathProgramCache]: Analyzing trace with hash 160325981, now seen corresponding path program 1 times [2022-10-17 11:08:23,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:08:23,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662454888] [2022-10-17 11:08:23,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:08:23,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:08:23,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:08:24,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:08:24,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:08:24,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662454888] [2022-10-17 11:08:24,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662454888] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:08:24,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:08:24,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 11:08:24,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065849491] [2022-10-17 11:08:24,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:08:24,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:08:24,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:08:24,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:08:24,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:08:24,007 INFO L87 Difference]: Start difference. First operand 148 states and 215 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:08:24,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:08:24,087 INFO L93 Difference]: Finished difference Result 360 states and 551 transitions. [2022-10-17 11:08:24,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:08:24,088 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2022-10-17 11:08:24,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:08:24,095 INFO L225 Difference]: With dead ends: 360 [2022-10-17 11:08:24,095 INFO L226 Difference]: Without dead ends: 246 [2022-10-17 11:08:24,100 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 [2022-10-17 11:08:24,102 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 78 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 11:08:24,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 287 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 11:08:24,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-10-17 11:08:24,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 244. [2022-10-17 11:08:24,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 1.5102880658436213) internal successors, (367), 243 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:08:24,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 367 transitions. [2022-10-17 11:08:24,177 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 367 transitions. Word has length 61 [2022-10-17 11:08:24,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:08:24,178 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 367 transitions. [2022-10-17 11:08:24,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:08:24,180 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 367 transitions. [2022-10-17 11:08:24,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-10-17 11:08:24,184 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:08:24,184 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, 1, 1] [2022-10-17 11:08:24,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 11:08:24,186 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:08:24,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:08:24,192 INFO L85 PathProgramCache]: Analyzing trace with hash -2130731763, now seen corresponding path program 1 times [2022-10-17 11:08:24,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:08:24,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745273003] [2022-10-17 11:08:24,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:08:24,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:08:24,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:08:24,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:08:24,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:08:24,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745273003] [2022-10-17 11:08:24,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745273003] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:08:24,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:08:24,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 11:08:24,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450030873] [2022-10-17 11:08:24,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:08:24,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:08:24,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:08:24,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:08:24,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:08:24,310 INFO L87 Difference]: Start difference. First operand 244 states and 367 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 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) [2022-10-17 11:08:24,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:08:24,390 INFO L93 Difference]: Finished difference Result 632 states and 981 transitions. [2022-10-17 11:08:24,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:08:24,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 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 62 [2022-10-17 11:08:24,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:08:24,394 INFO L225 Difference]: With dead ends: 632 [2022-10-17 11:08:24,394 INFO L226 Difference]: Without dead ends: 422 [2022-10-17 11:08:24,396 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 [2022-10-17 11:08:24,397 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 73 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 11:08:24,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 283 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 11:08:24,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-10-17 11:08:24,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 420. [2022-10-17 11:08:24,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 419 states have (on average 1.5346062052505967) internal successors, (643), 419 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:08:24,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 643 transitions. [2022-10-17 11:08:24,447 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 643 transitions. Word has length 62 [2022-10-17 11:08:24,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:08:24,448 INFO L495 AbstractCegarLoop]: Abstraction has 420 states and 643 transitions. [2022-10-17 11:08:24,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 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) [2022-10-17 11:08:24,448 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 643 transitions. [2022-10-17 11:08:24,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-10-17 11:08:24,450 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:08:24,451 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, 1, 1, 1] [2022-10-17 11:08:24,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 11:08:24,451 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:08:24,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:08:24,452 INFO L85 PathProgramCache]: Analyzing trace with hash 2078468845, now seen corresponding path program 1 times [2022-10-17 11:08:24,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:08:24,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785784341] [2022-10-17 11:08:24,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:08:24,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:08:24,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:08:24,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:08:24,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:08:24,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785784341] [2022-10-17 11:08:24,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785784341] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:08:24,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:08:24,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 11:08:24,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598136741] [2022-10-17 11:08:24,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:08:24,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:08:24,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:08:24,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:08:24,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:08:24,615 INFO L87 Difference]: Start difference. First operand 420 states and 643 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:08:24,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:08:24,725 INFO L93 Difference]: Finished difference Result 1128 states and 1757 transitions. [2022-10-17 11:08:24,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:08:24,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-10-17 11:08:24,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:08:24,733 INFO L225 Difference]: With dead ends: 1128 [2022-10-17 11:08:24,733 INFO L226 Difference]: Without dead ends: 742 [2022-10-17 11:08:24,737 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 [2022-10-17 11:08:24,748 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 68 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 11:08:24,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 279 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 11:08:24,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2022-10-17 11:08:24,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 740. [2022-10-17 11:08:24,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 739 states have (on average 1.5412719891745603) internal successors, (1139), 739 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:08:24,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 1139 transitions. [2022-10-17 11:08:24,866 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 1139 transitions. Word has length 63 [2022-10-17 11:08:24,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:08:24,869 INFO L495 AbstractCegarLoop]: Abstraction has 740 states and 1139 transitions. [2022-10-17 11:08:24,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:08:24,869 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 1139 transitions. [2022-10-17 11:08:24,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-10-17 11:08:24,876 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:08:24,876 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, 1, 1, 1, 1] [2022-10-17 11:08:24,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 11:08:24,877 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:08:24,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:08:24,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1380036385, now seen corresponding path program 1 times [2022-10-17 11:08:24,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:08:24,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599885832] [2022-10-17 11:08:24,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:08:24,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:08:24,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:08:25,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:08:25,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:08:25,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599885832] [2022-10-17 11:08:25,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599885832] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:08:25,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:08:25,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 11:08:25,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836929945] [2022-10-17 11:08:25,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:08:25,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 11:08:25,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:08:25,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 11:08:25,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 11:08:25,170 INFO L87 Difference]: Start difference. First operand 740 states and 1139 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:08:26,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:08:26,396 INFO L93 Difference]: Finished difference Result 7800 states and 12189 transitions. [2022-10-17 11:08:26,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-17 11:08:26,397 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-10-17 11:08:26,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:08:26,444 INFO L225 Difference]: With dead ends: 7800 [2022-10-17 11:08:26,444 INFO L226 Difference]: Without dead ends: 7094 [2022-10-17 11:08:26,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-10-17 11:08:26,449 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 1198 mSDsluCounter, 1634 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1198 SdHoareTripleChecker+Valid, 1762 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 11:08:26,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1198 Valid, 1762 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 11:08:26,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7094 states. [2022-10-17 11:08:26,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7094 to 1444. [2022-10-17 11:08:26,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1443 states have (on average 1.5322245322245323) internal successors, (2211), 1443 states have internal predecessors, (2211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:08:26,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 2211 transitions. [2022-10-17 11:08:26,795 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 2211 transitions. Word has length 64 [2022-10-17 11:08:26,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:08:26,796 INFO L495 AbstractCegarLoop]: Abstraction has 1444 states and 2211 transitions. [2022-10-17 11:08:26,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:08:26,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 2211 transitions. [2022-10-17 11:08:26,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-10-17 11:08:26,802 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:08:26,803 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, 1, 1, 1, 1, 1, 1] [2022-10-17 11:08:26,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 11:08:26,803 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:08:26,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:08:26,804 INFO L85 PathProgramCache]: Analyzing trace with hash 8107643, now seen corresponding path program 1 times [2022-10-17 11:08:26,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:08:26,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527161526] [2022-10-17 11:08:26,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:08:26,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:08:26,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:08:26,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:08:26,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:08:26,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527161526] [2022-10-17 11:08:26,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527161526] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:08:26,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:08:26,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 11:08:26,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66849062] [2022-10-17 11:08:26,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:08:26,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:08:26,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:08:26,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:08:26,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:08:26,960 INFO L87 Difference]: Start difference. First operand 1444 states and 2211 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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) [2022-10-17 11:08:27,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:08:27,490 INFO L93 Difference]: Finished difference Result 4088 states and 6261 transitions. [2022-10-17 11:08:27,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:08:27,490 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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 66 [2022-10-17 11:08:27,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:08:27,507 INFO L225 Difference]: With dead ends: 4088 [2022-10-17 11:08:27,507 INFO L226 Difference]: Without dead ends: 2678 [2022-10-17 11:08:27,512 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 [2022-10-17 11:08:27,515 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 58 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 221 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 [2022-10-17 11:08:27,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 221 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 11:08:27,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2678 states. [2022-10-17 11:08:27,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2678 to 2644. [2022-10-17 11:08:27,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2644 states, 2643 states have (on average 1.5024593265228907) internal successors, (3971), 2643 states have internal predecessors, (3971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:08:27,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2644 states to 2644 states and 3971 transitions. [2022-10-17 11:08:27,979 INFO L78 Accepts]: Start accepts. Automaton has 2644 states and 3971 transitions. Word has length 66 [2022-10-17 11:08:27,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:08:27,981 INFO L495 AbstractCegarLoop]: Abstraction has 2644 states and 3971 transitions. [2022-10-17 11:08:27,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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) [2022-10-17 11:08:27,981 INFO L276 IsEmpty]: Start isEmpty. Operand 2644 states and 3971 transitions. [2022-10-17 11:08:27,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-10-17 11:08:27,982 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:08:27,982 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, 1, 1, 1, 1, 1, 1] [2022-10-17 11:08:27,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 11:08:27,982 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:08:27,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:08:27,983 INFO L85 PathProgramCache]: Analyzing trace with hash 29110298, now seen corresponding path program 1 times [2022-10-17 11:08:27,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:08:27,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658600380] [2022-10-17 11:08:27,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:08:27,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:08:28,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:08:28,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:08:28,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:08:28,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658600380] [2022-10-17 11:08:28,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658600380] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:08:28,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:08:28,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 11:08:28,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301631869] [2022-10-17 11:08:28,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:08:28,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 11:08:28,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:08:28,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 11:08:28,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-10-17 11:08:28,362 INFO L87 Difference]: Start difference. First operand 2644 states and 3971 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 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) [2022-10-17 11:08:29,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:08:29,074 INFO L93 Difference]: Finished difference Result 5256 states and 7909 transitions. [2022-10-17 11:08:29,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 11:08:29,075 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 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 66 [2022-10-17 11:08:29,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:08:29,091 INFO L225 Difference]: With dead ends: 5256 [2022-10-17 11:08:29,091 INFO L226 Difference]: Without dead ends: 2646 [2022-10-17 11:08:29,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-10-17 11:08:29,095 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 254 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 11:08:29,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 600 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 11:08:29,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2646 states. [2022-10-17 11:08:29,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2646 to 2644. [2022-10-17 11:08:29,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2644 states, 2643 states have (on average 1.4903518728717366) internal successors, (3939), 2643 states have internal predecessors, (3939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:08:29,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2644 states to 2644 states and 3939 transitions. [2022-10-17 11:08:29,557 INFO L78 Accepts]: Start accepts. Automaton has 2644 states and 3939 transitions. Word has length 66 [2022-10-17 11:08:29,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:08:29,558 INFO L495 AbstractCegarLoop]: Abstraction has 2644 states and 3939 transitions. [2022-10-17 11:08:29,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 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) [2022-10-17 11:08:29,558 INFO L276 IsEmpty]: Start isEmpty. Operand 2644 states and 3939 transitions. [2022-10-17 11:08:29,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-10-17 11:08:29,559 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:08:29,559 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, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:08:29,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 11:08:29,560 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:08:29,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:08:29,560 INFO L85 PathProgramCache]: Analyzing trace with hash 849093681, now seen corresponding path program 1 times [2022-10-17 11:08:29,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:08:29,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549148183] [2022-10-17 11:08:29,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:08:29,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:08:29,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:08:29,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:08:29,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:08:29,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549148183] [2022-10-17 11:08:29,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549148183] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:08:29,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:08:29,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 11:08:29,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910604129] [2022-10-17 11:08:29,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:08:29,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 11:08:29,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:08:29,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 11:08:29,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 11:08:29,619 INFO L87 Difference]: Start difference. First operand 2644 states and 3939 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) [2022-10-17 11:08:30,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:08:30,266 INFO L93 Difference]: Finished difference Result 5147 states and 7753 transitions. [2022-10-17 11:08:30,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 11:08:30,267 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 [2022-10-17 11:08:30,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:08:30,289 INFO L225 Difference]: With dead ends: 5147 [2022-10-17 11:08:30,290 INFO L226 Difference]: Without dead ends: 3736 [2022-10-17 11:08:30,292 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 [2022-10-17 11:08:30,293 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 85 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 11:08:30,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 299 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 11:08:30,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3736 states. [2022-10-17 11:08:30,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3736 to 3734. [2022-10-17 11:08:31,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3734 states, 3733 states have (on average 1.4886150549156174) internal successors, (5557), 3733 states have internal predecessors, (5557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:08:31,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3734 states to 3734 states and 5557 transitions. [2022-10-17 11:08:31,019 INFO L78 Accepts]: Start accepts. Automaton has 3734 states and 5557 transitions. Word has length 67 [2022-10-17 11:08:31,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:08:31,020 INFO L495 AbstractCegarLoop]: Abstraction has 3734 states and 5557 transitions. [2022-10-17 11:08:31,020 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) [2022-10-17 11:08:31,020 INFO L276 IsEmpty]: Start isEmpty. Operand 3734 states and 5557 transitions. [2022-10-17 11:08:31,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-10-17 11:08:31,021 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:08:31,021 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, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:08:31,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 11:08:31,022 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:08:31,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:08:31,022 INFO L85 PathProgramCache]: Analyzing trace with hash 900509886, now seen corresponding path program 1 times [2022-10-17 11:08:31,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:08:31,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689630459] [2022-10-17 11:08:31,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:08:31,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:08:31,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:08:31,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:08:31,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:08:31,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689630459] [2022-10-17 11:08:31,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689630459] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:08:31,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:08:31,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 11:08:31,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829410661] [2022-10-17 11:08:31,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:08:31,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 11:08:31,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:08:31,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 11:08:31,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 11:08:31,134 INFO L87 Difference]: Start difference. First operand 3734 states and 5557 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 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) [2022-10-17 11:08:31,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:08:31,704 INFO L93 Difference]: Finished difference Result 7432 states and 11078 transitions. [2022-10-17 11:08:31,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 11:08:31,705 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 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 [2022-10-17 11:08:31,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:08:31,727 INFO L225 Difference]: With dead ends: 7432 [2022-10-17 11:08:31,728 INFO L226 Difference]: Without dead ends: 3734 [2022-10-17 11:08:31,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-10-17 11:08:31,734 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 294 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 11:08:31,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 117 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 11:08:31,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3734 states. [2022-10-17 11:08:32,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3734 to 3734. [2022-10-17 11:08:32,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3734 states, 3733 states have (on average 1.4757567639967855) internal successors, (5509), 3733 states have internal predecessors, (5509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:08:32,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3734 states to 3734 states and 5509 transitions. [2022-10-17 11:08:32,261 INFO L78 Accepts]: Start accepts. Automaton has 3734 states and 5509 transitions. Word has length 67 [2022-10-17 11:08:32,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:08:32,262 INFO L495 AbstractCegarLoop]: Abstraction has 3734 states and 5509 transitions. [2022-10-17 11:08:32,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 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) [2022-10-17 11:08:32,262 INFO L276 IsEmpty]: Start isEmpty. Operand 3734 states and 5509 transitions. [2022-10-17 11:08:32,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-10-17 11:08:32,263 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:08:32,263 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, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:08:32,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-17 11:08:32,263 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:08:32,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:08:32,264 INFO L85 PathProgramCache]: Analyzing trace with hash 371219385, now seen corresponding path program 1 times [2022-10-17 11:08:32,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:08:32,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221634947] [2022-10-17 11:08:32,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:08:32,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:08:32,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:08:32,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:08:32,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:08:32,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221634947] [2022-10-17 11:08:32,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221634947] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:08:32,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:08:32,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 11:08:32,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801930782] [2022-10-17 11:08:32,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:08:32,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 11:08:32,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:08:32,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 11:08:32,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 11:08:32,365 INFO L87 Difference]: Start difference. First operand 3734 states and 5509 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 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) [2022-10-17 11:08:33,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:08:33,054 INFO L93 Difference]: Finished difference Result 7432 states and 10982 transitions. [2022-10-17 11:08:33,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 11:08:33,054 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 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 [2022-10-17 11:08:33,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:08:33,077 INFO L225 Difference]: With dead ends: 7432 [2022-10-17 11:08:33,077 INFO L226 Difference]: Without dead ends: 3734 [2022-10-17 11:08:33,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-10-17 11:08:33,084 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 330 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 11:08:33,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 93 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 11:08:33,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3734 states. [2022-10-17 11:08:33,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3734 to 3734. [2022-10-17 11:08:33,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3734 states, 3733 states have (on average 1.4628984730779533) internal successors, (5461), 3733 states have internal predecessors, (5461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:08:33,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3734 states to 3734 states and 5461 transitions. [2022-10-17 11:08:33,798 INFO L78 Accepts]: Start accepts. Automaton has 3734 states and 5461 transitions. Word has length 67 [2022-10-17 11:08:33,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:08:33,798 INFO L495 AbstractCegarLoop]: Abstraction has 3734 states and 5461 transitions. [2022-10-17 11:08:33,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 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) [2022-10-17 11:08:33,799 INFO L276 IsEmpty]: Start isEmpty. Operand 3734 states and 5461 transitions. [2022-10-17 11:08:33,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-10-17 11:08:33,799 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:08:33,799 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, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:08:33,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-10-17 11:08:33,800 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:08:33,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:08:33,800 INFO L85 PathProgramCache]: Analyzing trace with hash -391644322, now seen corresponding path program 1 times [2022-10-17 11:08:33,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:08:33,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442863754] [2022-10-17 11:08:33,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:08:33,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:08:33,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:08:33,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:08:33,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:08:33,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442863754] [2022-10-17 11:08:33,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442863754] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:08:33,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:08:33,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 11:08:33,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694093544] [2022-10-17 11:08:33,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:08:33,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 11:08:33,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:08:33,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 11:08:33,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 11:08:33,898 INFO L87 Difference]: Start difference. First operand 3734 states and 5461 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 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) [2022-10-17 11:08:34,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:08:34,428 INFO L93 Difference]: Finished difference Result 7432 states and 10886 transitions. [2022-10-17 11:08:34,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 11:08:34,428 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 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 [2022-10-17 11:08:34,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:08:34,438 INFO L225 Difference]: With dead ends: 7432 [2022-10-17 11:08:34,438 INFO L226 Difference]: Without dead ends: 3734 [2022-10-17 11:08:34,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-10-17 11:08:34,445 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 314 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 11:08:34,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 101 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 11:08:34,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3734 states. [2022-10-17 11:08:35,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3734 to 3734. [2022-10-17 11:08:35,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3734 states, 3733 states have (on average 1.4500401821591213) internal successors, (5413), 3733 states have internal predecessors, (5413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:08:35,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3734 states to 3734 states and 5413 transitions. [2022-10-17 11:08:35,153 INFO L78 Accepts]: Start accepts. Automaton has 3734 states and 5413 transitions. Word has length 67 [2022-10-17 11:08:35,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:08:35,153 INFO L495 AbstractCegarLoop]: Abstraction has 3734 states and 5413 transitions. [2022-10-17 11:08:35,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 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) [2022-10-17 11:08:35,154 INFO L276 IsEmpty]: Start isEmpty. Operand 3734 states and 5413 transitions. [2022-10-17 11:08:35,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-10-17 11:08:35,155 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:08:35,155 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, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:08:35,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-17 11:08:35,155 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:08:35,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:08:35,156 INFO L85 PathProgramCache]: Analyzing trace with hash -263559015, now seen corresponding path program 1 times [2022-10-17 11:08:35,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:08:35,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857050948] [2022-10-17 11:08:35,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:08:35,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:08:35,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:08:35,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:08:35,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:08:35,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857050948] [2022-10-17 11:08:35,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857050948] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:08:35,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:08:35,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 11:08:35,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015784484] [2022-10-17 11:08:35,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:08:35,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 11:08:35,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:08:35,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 11:08:35,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 11:08:35,385 INFO L87 Difference]: Start difference. First operand 3734 states and 5413 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 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) [2022-10-17 11:08:37,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:08:37,142 INFO L93 Difference]: Finished difference Result 6718 states and 9708 transitions. [2022-10-17 11:08:37,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 11:08:37,142 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 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 [2022-10-17 11:08:37,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:08:37,189 INFO L225 Difference]: With dead ends: 6718 [2022-10-17 11:08:37,190 INFO L226 Difference]: Without dead ends: 6716 [2022-10-17 11:08:37,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-17 11:08:37,193 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 174 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 11:08:37,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 585 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 11:08:37,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6716 states. [2022-10-17 11:08:37,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6716 to 3862. [2022-10-17 11:08:38,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3862 states, 3861 states have (on average 1.430976430976431) internal successors, (5525), 3861 states have internal predecessors, (5525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:08:38,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3862 states to 3862 states and 5525 transitions. [2022-10-17 11:08:38,007 INFO L78 Accepts]: Start accepts. Automaton has 3862 states and 5525 transitions. Word has length 67 [2022-10-17 11:08:38,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:08:38,008 INFO L495 AbstractCegarLoop]: Abstraction has 3862 states and 5525 transitions. [2022-10-17 11:08:38,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 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) [2022-10-17 11:08:38,008 INFO L276 IsEmpty]: Start isEmpty. Operand 3862 states and 5525 transitions. [2022-10-17 11:08:38,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-10-17 11:08:38,011 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:08:38,011 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:08:38,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-10-17 11:08:38,012 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:08:38,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:08:38,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1999510602, now seen corresponding path program 1 times [2022-10-17 11:08:38,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:08:38,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665442835] [2022-10-17 11:08:38,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:08:38,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:08:38,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:08:38,226 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-10-17 11:08:38,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:08:38,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665442835] [2022-10-17 11:08:38,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665442835] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:08:38,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:08:38,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 11:08:38,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105712222] [2022-10-17 11:08:38,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:08:38,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 11:08:38,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:08:38,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 11:08:38,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 11:08:38,230 INFO L87 Difference]: Start difference. First operand 3862 states and 5525 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:08:41,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:08:41,601 INFO L93 Difference]: Finished difference Result 23714 states and 33971 transitions. [2022-10-17 11:08:41,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 11:08:41,602 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 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 94 [2022-10-17 11:08:41,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:08:41,648 INFO L225 Difference]: With dead ends: 23714 [2022-10-17 11:08:41,649 INFO L226 Difference]: Without dead ends: 19888 [2022-10-17 11:08:41,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-10-17 11:08:41,658 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 929 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 929 SdHoareTripleChecker+Valid, 788 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 11:08:41,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [929 Valid, 788 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 11:08:41,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19888 states. [2022-10-17 11:08:43,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19888 to 7686. [2022-10-17 11:08:43,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7686 states, 7685 states have (on average 1.4268054651919324) internal successors, (10965), 7685 states have internal predecessors, (10965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:08:43,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7686 states to 7686 states and 10965 transitions. [2022-10-17 11:08:43,055 INFO L78 Accepts]: Start accepts. Automaton has 7686 states and 10965 transitions. Word has length 94 [2022-10-17 11:08:43,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:08:43,056 INFO L495 AbstractCegarLoop]: Abstraction has 7686 states and 10965 transitions. [2022-10-17 11:08:43,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:08:43,057 INFO L276 IsEmpty]: Start isEmpty. Operand 7686 states and 10965 transitions. [2022-10-17 11:08:43,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-10-17 11:08:43,060 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:08:43,061 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:08:43,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-10-17 11:08:43,061 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:08:43,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:08:43,062 INFO L85 PathProgramCache]: Analyzing trace with hash 845564496, now seen corresponding path program 1 times [2022-10-17 11:08:43,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:08:43,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521378091] [2022-10-17 11:08:43,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:08:43,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:08:43,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:08:43,227 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-10-17 11:08:43,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:08:43,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521378091] [2022-10-17 11:08:43,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521378091] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:08:43,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:08:43,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 11:08:43,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566748631] [2022-10-17 11:08:43,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:08:43,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 11:08:43,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:08:43,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 11:08:43,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 11:08:43,230 INFO L87 Difference]: Start difference. First operand 7686 states and 10965 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:08:47,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:08:47,505 INFO L93 Difference]: Finished difference Result 27538 states and 39411 transitions. [2022-10-17 11:08:47,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 11:08:47,506 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 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 94 [2022-10-17 11:08:47,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:08:47,558 INFO L225 Difference]: With dead ends: 27538 [2022-10-17 11:08:47,558 INFO L226 Difference]: Without dead ends: 23712 [2022-10-17 11:08:47,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-10-17 11:08:47,570 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 880 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 880 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 11:08:47,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [880 Valid, 815 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 11:08:47,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23712 states. [2022-10-17 11:08:49,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23712 to 13430. [2022-10-17 11:08:49,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13430 states, 13429 states have (on average 1.421178047509122) internal successors, (19085), 13429 states have internal predecessors, (19085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:08:50,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13430 states to 13430 states and 19085 transitions. [2022-10-17 11:08:50,002 INFO L78 Accepts]: Start accepts. Automaton has 13430 states and 19085 transitions. Word has length 94 [2022-10-17 11:08:50,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:08:50,003 INFO L495 AbstractCegarLoop]: Abstraction has 13430 states and 19085 transitions. [2022-10-17 11:08:50,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:08:50,003 INFO L276 IsEmpty]: Start isEmpty. Operand 13430 states and 19085 transitions. [2022-10-17 11:08:50,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-10-17 11:08:50,008 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:08:50,008 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:08:50,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-10-17 11:08:50,008 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 11:08:50,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:08:50,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1141609924, now seen corresponding path program 1 times [2022-10-17 11:08:50,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:08:50,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086023205] [2022-10-17 11:08:50,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:08:50,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:08:50,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:08:50,181 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-17 11:08:50,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:08:50,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086023205] [2022-10-17 11:08:50,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086023205] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:08:50,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:08:50,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 11:08:50,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797195314] [2022-10-17 11:08:50,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:08:50,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 11:08:50,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:08:50,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 11:08:50,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 11:08:50,184 INFO L87 Difference]: Start difference. First operand 13430 states and 19085 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)