./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.2.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b882c28-5580-490d-9953-cefd150314fa/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b882c28-5580-490d-9953-cefd150314fa/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b882c28-5580-490d-9953-cefd150314fa/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b882c28-5580-490d-9953-cefd150314fa/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.2.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b882c28-5580-490d-9953-cefd150314fa/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b882c28-5580-490d-9953-cefd150314fa/bin/uautomizer-ZsLfNo2U6R --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 dc5c360927b8f961c81c15f32a759fd4b0c6971bec3efffa8564070a88946c3e --- 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-38b53e6 [2022-11-25 15:32:41,156 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 15:32:41,159 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 15:32:41,182 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 15:32:41,182 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 15:32:41,184 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 15:32:41,185 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 15:32:41,187 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 15:32:41,189 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 15:32:41,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 15:32:41,191 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 15:32:41,192 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 15:32:41,192 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 15:32:41,194 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 15:32:41,195 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 15:32:41,196 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 15:32:41,197 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 15:32:41,198 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 15:32:41,200 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 15:32:41,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 15:32:41,204 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 15:32:41,205 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 15:32:41,207 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 15:32:41,208 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 15:32:41,212 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 15:32:41,212 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 15:32:41,213 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 15:32:41,214 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 15:32:41,214 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 15:32:41,216 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 15:32:41,216 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 15:32:41,217 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 15:32:41,218 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 15:32:41,230 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 15:32:41,231 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 15:32:41,232 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 15:32:41,233 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 15:32:41,233 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 15:32:41,233 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 15:32:41,235 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 15:32:41,235 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 15:32:41,239 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b882c28-5580-490d-9953-cefd150314fa/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 15:32:41,285 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 15:32:41,285 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 15:32:41,286 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 15:32:41,286 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 15:32:41,287 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 15:32:41,288 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 15:32:41,289 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 15:32:41,289 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 15:32:41,289 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 15:32:41,289 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 15:32:41,291 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 15:32:41,291 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 15:32:41,291 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 15:32:41,292 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 15:32:41,292 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 15:32:41,292 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 15:32:41,293 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 15:32:41,293 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 15:32:41,293 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 15:32:41,293 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 15:32:41,294 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 15:32:41,294 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 15:32:41,294 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 15:32:41,295 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 15:32:41,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:32:41,295 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 15:32:41,296 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 15:32:41,296 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 15:32:41,297 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 15:32:41,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 15:32:41,297 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 15:32:41,298 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 15:32:41,298 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 15:32:41,298 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 15:32:41,299 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b882c28-5580-490d-9953-cefd150314fa/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b882c28-5580-490d-9953-cefd150314fa/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc5c360927b8f961c81c15f32a759fd4b0c6971bec3efffa8564070a88946c3e [2022-11-25 15:32:41,699 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 15:32:41,743 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 15:32:41,746 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 15:32:41,747 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 15:32:41,748 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 15:32:41,749 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b882c28-5580-490d-9953-cefd150314fa/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.2.ufo.UNBOUNDED.pals.c [2022-11-25 15:32:45,228 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 15:32:45,518 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 15:32:45,519 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b882c28-5580-490d-9953-cefd150314fa/sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.2.ufo.UNBOUNDED.pals.c [2022-11-25 15:32:45,538 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b882c28-5580-490d-9953-cefd150314fa/bin/uautomizer-ZsLfNo2U6R/data/0ffd719d3/b8499d60d1fa412b9e06dd78bc70c999/FLAG255a3a5ec [2022-11-25 15:32:45,561 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b882c28-5580-490d-9953-cefd150314fa/bin/uautomizer-ZsLfNo2U6R/data/0ffd719d3/b8499d60d1fa412b9e06dd78bc70c999 [2022-11-25 15:32:45,565 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 15:32:45,567 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 15:32:45,575 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 15:32:45,575 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 15:32:45,580 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 15:32:45,585 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:32:45" (1/1) ... [2022-11-25 15:32:45,586 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6305b525 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:32:45, skipping insertion in model container [2022-11-25 15:32:45,587 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:32:45" (1/1) ... [2022-11-25 15:32:45,597 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 15:32:45,672 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 15:32:46,096 WARN L237 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_6b882c28-5580-490d-9953-cefd150314fa/sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.2.ufo.UNBOUNDED.pals.c[12914,12927] [2022-11-25 15:32:46,099 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:32:46,112 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 15:32:46,196 WARN L237 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_6b882c28-5580-490d-9953-cefd150314fa/sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.2.ufo.UNBOUNDED.pals.c[12914,12927] [2022-11-25 15:32:46,196 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:32:46,215 INFO L208 MainTranslator]: Completed translation [2022-11-25 15:32:46,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:32:46 WrapperNode [2022-11-25 15:32:46,216 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 15:32:46,217 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 15:32:46,218 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 15:32:46,218 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 15:32:46,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:32:46" (1/1) ... [2022-11-25 15:32:46,238 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:32:46" (1/1) ... [2022-11-25 15:32:46,275 INFO L138 Inliner]: procedures = 22, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 417 [2022-11-25 15:32:46,276 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 15:32:46,277 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 15:32:46,277 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 15:32:46,277 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 15:32:46,292 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:32:46" (1/1) ... [2022-11-25 15:32:46,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:32:46" (1/1) ... [2022-11-25 15:32:46,297 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:32:46" (1/1) ... [2022-11-25 15:32:46,305 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:32:46" (1/1) ... [2022-11-25 15:32:46,314 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:32:46" (1/1) ... [2022-11-25 15:32:46,329 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:32:46" (1/1) ... [2022-11-25 15:32:46,344 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:32:46" (1/1) ... [2022-11-25 15:32:46,347 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:32:46" (1/1) ... [2022-11-25 15:32:46,350 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 15:32:46,351 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 15:32:46,352 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 15:32:46,352 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 15:32:46,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:32:46" (1/1) ... [2022-11-25 15:32:46,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:32:46,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b882c28-5580-490d-9953-cefd150314fa/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:32:46,415 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b882c28-5580-490d-9953-cefd150314fa/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 15:32:46,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b882c28-5580-490d-9953-cefd150314fa/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 15:32:46,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 15:32:46,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 15:32:46,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 15:32:46,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 15:32:46,577 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 15:32:46,580 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 15:32:47,303 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 15:32:47,312 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 15:32:47,313 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 15:32:47,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:32:47 BoogieIcfgContainer [2022-11-25 15:32:47,316 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 15:32:47,320 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 15:32:47,320 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 15:32:47,324 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 15:32:47,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 03:32:45" (1/3) ... [2022-11-25 15:32:47,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ada606a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:32:47, skipping insertion in model container [2022-11-25 15:32:47,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:32:46" (2/3) ... [2022-11-25 15:32:47,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ada606a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:32:47, skipping insertion in model container [2022-11-25 15:32:47,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:32:47" (3/3) ... [2022-11-25 15:32:47,328 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.2.ufo.UNBOUNDED.pals.c [2022-11-25 15:32:47,355 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 15:32:47,355 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 15:32:47,425 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 15:32:47,434 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;@67b1bd27, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 15:32:47,435 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 15:32:47,445 INFO L276 IsEmpty]: Start isEmpty. Operand has 125 states, 123 states have (on average 1.7723577235772359) internal successors, (218), 124 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:32:47,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-25 15:32:47,459 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:32:47,460 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] [2022-11-25 15:32:47,461 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:32:47,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:32:47,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1506824827, now seen corresponding path program 1 times [2022-11-25 15:32:47,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:32:47,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616165947] [2022-11-25 15:32:47,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:32:47,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:32:47,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:47,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:32:47,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:32:47,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616165947] [2022-11-25 15:32:47,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616165947] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:32:47,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:32:47,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:32:47,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229005795] [2022-11-25 15:32:47,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:32:47,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 15:32:47,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:32:47,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 15:32:47,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 15:32:47,888 INFO L87 Difference]: Start difference. First operand has 125 states, 123 states have (on average 1.7723577235772359) internal successors, (218), 124 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:32:47,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:32:47,954 INFO L93 Difference]: Finished difference Result 190 states and 331 transitions. [2022-11-25 15:32:47,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 15:32:47,959 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2022-11-25 15:32:47,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:32:47,970 INFO L225 Difference]: With dead ends: 190 [2022-11-25 15:32:47,971 INFO L226 Difference]: Without dead ends: 121 [2022-11-25 15:32:47,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 15:32:47,978 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:32:47,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:32:48,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-11-25 15:32:48,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2022-11-25 15:32:48,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.7583333333333333) internal successors, (211), 120 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:32:48,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 211 transitions. [2022-11-25 15:32:48,054 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 211 transitions. Word has length 37 [2022-11-25 15:32:48,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:32:48,056 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 211 transitions. [2022-11-25 15:32:48,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:32:48,058 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 211 transitions. [2022-11-25 15:32:48,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-25 15:32:48,061 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:32:48,062 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] [2022-11-25 15:32:48,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 15:32:48,063 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:32:48,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:32:48,065 INFO L85 PathProgramCache]: Analyzing trace with hash 689176377, now seen corresponding path program 1 times [2022-11-25 15:32:48,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:32:48,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60503540] [2022-11-25 15:32:48,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:32:48,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:32:48,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:48,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:32:48,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:32:48,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60503540] [2022-11-25 15:32:48,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60503540] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:32:48,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:32:48,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 15:32:48,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025037158] [2022-11-25 15:32:48,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:32:48,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:32:48,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:32:48,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:32:48,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:32:48,327 INFO L87 Difference]: Start difference. First operand 121 states and 211 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:32:48,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:32:48,431 INFO L93 Difference]: Finished difference Result 189 states and 324 transitions. [2022-11-25 15:32:48,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 15:32:48,435 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2022-11-25 15:32:48,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:32:48,440 INFO L225 Difference]: With dead ends: 189 [2022-11-25 15:32:48,441 INFO L226 Difference]: Without dead ends: 121 [2022-11-25 15:32:48,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:32:48,444 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 112 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:32:48,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 695 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:32:48,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-11-25 15:32:48,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2022-11-25 15:32:48,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.5333333333333334) internal successors, (184), 120 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:32:48,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 184 transitions. [2022-11-25 15:32:48,463 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 184 transitions. Word has length 37 [2022-11-25 15:32:48,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:32:48,463 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 184 transitions. [2022-11-25 15:32:48,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:32:48,464 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 184 transitions. [2022-11-25 15:32:48,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-25 15:32:48,475 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:32:48,477 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] [2022-11-25 15:32:48,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 15:32:48,478 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:32:48,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:32:48,485 INFO L85 PathProgramCache]: Analyzing trace with hash 500395394, now seen corresponding path program 1 times [2022-11-25 15:32:48,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:32:48,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618139419] [2022-11-25 15:32:48,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:32:48,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:32:48,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:48,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:32:48,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:32:48,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618139419] [2022-11-25 15:32:48,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618139419] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:32:48,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:32:48,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:32:48,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053632054] [2022-11-25 15:32:48,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:32:48,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:32:48,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:32:48,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:32:48,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:32:48,782 INFO L87 Difference]: Start difference. First operand 121 states and 184 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) [2022-11-25 15:32:48,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:32:48,928 INFO L93 Difference]: Finished difference Result 240 states and 385 transitions. [2022-11-25 15:32:48,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:32:48,929 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 [2022-11-25 15:32:48,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:32:48,931 INFO L225 Difference]: With dead ends: 240 [2022-11-25 15:32:48,931 INFO L226 Difference]: Without dead ends: 176 [2022-11-25 15:32:48,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:32:48,934 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 83 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:32:48,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 319 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:32:48,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-11-25 15:32:48,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 173. [2022-11-25 15:32:48,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 1.558139534883721) internal successors, (268), 172 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:32:48,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 268 transitions. [2022-11-25 15:32:48,971 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 268 transitions. Word has length 63 [2022-11-25 15:32:48,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:32:48,971 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 268 transitions. [2022-11-25 15:32:48,972 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) [2022-11-25 15:32:48,972 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 268 transitions. [2022-11-25 15:32:48,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-25 15:32:48,976 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:32:48,976 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] [2022-11-25 15:32:48,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 15:32:48,977 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:32:48,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:32:48,983 INFO L85 PathProgramCache]: Analyzing trace with hash 634628362, now seen corresponding path program 1 times [2022-11-25 15:32:48,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:32:48,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523474553] [2022-11-25 15:32:48,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:32:48,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:32:49,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:49,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:32:49,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:32:49,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523474553] [2022-11-25 15:32:49,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523474553] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:32:49,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:32:49,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:32:49,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107900375] [2022-11-25 15:32:49,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:32:49,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:32:49,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:32:49,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:32:49,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:32:49,214 INFO L87 Difference]: Start difference. First operand 173 states and 268 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:32:49,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:32:49,290 INFO L93 Difference]: Finished difference Result 391 states and 628 transitions. [2022-11-25 15:32:49,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:32:49,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-25 15:32:49,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:32:49,297 INFO L225 Difference]: With dead ends: 391 [2022-11-25 15:32:49,299 INFO L226 Difference]: Without dead ends: 275 [2022-11-25 15:32:49,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:32:49,307 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 85 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:32:49,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 332 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:32:49,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2022-11-25 15:32:49,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 271. [2022-11-25 15:32:49,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 270 states have (on average 1.5851851851851853) internal successors, (428), 270 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:32:49,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 428 transitions. [2022-11-25 15:32:49,365 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 428 transitions. Word has length 65 [2022-11-25 15:32:49,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:32:49,366 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 428 transitions. [2022-11-25 15:32:49,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:32:49,366 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 428 transitions. [2022-11-25 15:32:49,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-25 15:32:49,368 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:32:49,368 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] [2022-11-25 15:32:49,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 15:32:49,369 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:32:49,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:32:49,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1765336754, now seen corresponding path program 1 times [2022-11-25 15:32:49,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:32:49,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260752606] [2022-11-25 15:32:49,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:32:49,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:32:49,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:49,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:32:49,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:32:49,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260752606] [2022-11-25 15:32:49,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260752606] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:32:49,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:32:49,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:32:49,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314760361] [2022-11-25 15:32:49,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:32:49,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:32:49,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:32:49,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:32:49,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:32:49,480 INFO L87 Difference]: Start difference. First operand 271 states and 428 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:32:49,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:32:49,538 INFO L93 Difference]: Finished difference Result 671 states and 1082 transitions. [2022-11-25 15:32:49,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:32:49,539 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-11-25 15:32:49,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:32:49,543 INFO L225 Difference]: With dead ends: 671 [2022-11-25 15:32:49,544 INFO L226 Difference]: Without dead ends: 457 [2022-11-25 15:32:49,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:32:49,549 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 79 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:32:49,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 333 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:32:49,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2022-11-25 15:32:49,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 451. [2022-11-25 15:32:49,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 450 states have (on average 1.5911111111111111) internal successors, (716), 450 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:32:49,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 716 transitions. [2022-11-25 15:32:49,606 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 716 transitions. Word has length 67 [2022-11-25 15:32:49,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:32:49,609 INFO L495 AbstractCegarLoop]: Abstraction has 451 states and 716 transitions. [2022-11-25 15:32:49,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:32:49,612 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 716 transitions. [2022-11-25 15:32:49,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-25 15:32:49,613 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:32:49,614 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, 1, 1] [2022-11-25 15:32:49,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 15:32:49,616 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:32:49,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:32:49,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1263831096, now seen corresponding path program 1 times [2022-11-25 15:32:49,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:32:49,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108771060] [2022-11-25 15:32:49,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:32:49,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:32:49,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:49,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:32:49,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:32:49,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108771060] [2022-11-25 15:32:49,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108771060] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:32:49,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:32:49,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 15:32:49,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678024352] [2022-11-25 15:32:49,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:32:49,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:32:49,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:32:49,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:32:49,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:32:49,840 INFO L87 Difference]: Start difference. First operand 451 states and 716 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:32:50,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:32:50,126 INFO L93 Difference]: Finished difference Result 1907 states and 3134 transitions. [2022-11-25 15:32:50,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 15:32:50,127 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-11-25 15:32:50,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:32:50,136 INFO L225 Difference]: With dead ends: 1907 [2022-11-25 15:32:50,136 INFO L226 Difference]: Without dead ends: 1513 [2022-11-25 15:32:50,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 15:32:50,139 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 735 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:32:50,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [735 Valid, 991 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:32:50,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1513 states. [2022-11-25 15:32:50,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1513 to 795. [2022-11-25 15:32:50,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 794 states have (on average 1.6083123425692696) internal successors, (1277), 794 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:32:50,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1277 transitions. [2022-11-25 15:32:50,228 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1277 transitions. Word has length 69 [2022-11-25 15:32:50,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:32:50,229 INFO L495 AbstractCegarLoop]: Abstraction has 795 states and 1277 transitions. [2022-11-25 15:32:50,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:32:50,230 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1277 transitions. [2022-11-25 15:32:50,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-25 15:32:50,233 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:32:50,233 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, 1, 1, 1] [2022-11-25 15:32:50,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 15:32:50,234 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:32:50,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:32:50,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1398774354, now seen corresponding path program 1 times [2022-11-25 15:32:50,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:32:50,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601140702] [2022-11-25 15:32:50,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:32:50,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:32:50,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:50,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:32:50,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:32:50,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601140702] [2022-11-25 15:32:50,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601140702] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:32:50,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:32:50,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 15:32:50,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060426578] [2022-11-25 15:32:50,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:32:50,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:32:50,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:32:50,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:32:50,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:32:50,394 INFO L87 Difference]: Start difference. First operand 795 states and 1277 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:32:50,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:32:50,595 INFO L93 Difference]: Finished difference Result 2309 states and 3785 transitions. [2022-11-25 15:32:50,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 15:32:50,596 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-11-25 15:32:50,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:32:50,604 INFO L225 Difference]: With dead ends: 2309 [2022-11-25 15:32:50,604 INFO L226 Difference]: Without dead ends: 1571 [2022-11-25 15:32:50,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:32:50,607 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 311 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:32:50,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 588 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:32:50,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1571 states. [2022-11-25 15:32:50,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1571 to 1174. [2022-11-25 15:32:50,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1174 states, 1173 states have (on average 1.6206308610400681) internal successors, (1901), 1173 states have internal predecessors, (1901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:32:50,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 1901 transitions. [2022-11-25 15:32:50,721 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 1901 transitions. Word has length 70 [2022-11-25 15:32:50,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:32:50,722 INFO L495 AbstractCegarLoop]: Abstraction has 1174 states and 1901 transitions. [2022-11-25 15:32:50,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:32:50,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 1901 transitions. [2022-11-25 15:32:50,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-25 15:32:50,724 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:32:50,724 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, 1, 1, 1, 1] [2022-11-25 15:32:50,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 15:32:50,725 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:32:50,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:32:50,726 INFO L85 PathProgramCache]: Analyzing trace with hash 2128806959, now seen corresponding path program 1 times [2022-11-25 15:32:50,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:32:50,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135105066] [2022-11-25 15:32:50,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:32:50,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:32:50,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:50,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:32:50,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:32:50,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135105066] [2022-11-25 15:32:50,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135105066] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:32:50,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:32:50,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 15:32:50,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726066607] [2022-11-25 15:32:50,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:32:50,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:32:50,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:32:50,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:32:50,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:32:50,868 INFO L87 Difference]: Start difference. First operand 1174 states and 1901 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:32:51,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:32:51,104 INFO L93 Difference]: Finished difference Result 3397 states and 5563 transitions. [2022-11-25 15:32:51,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 15:32:51,105 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2022-11-25 15:32:51,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:32:51,115 INFO L225 Difference]: With dead ends: 3397 [2022-11-25 15:32:51,115 INFO L226 Difference]: Without dead ends: 2280 [2022-11-25 15:32:51,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:32:51,118 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 309 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:32:51,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 589 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:32:51,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2280 states. [2022-11-25 15:32:51,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2280 to 1715. [2022-11-25 15:32:51,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1715 states, 1714 states have (on average 1.6207701283547258) internal successors, (2778), 1714 states have internal predecessors, (2778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:32:51,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1715 states to 1715 states and 2778 transitions. [2022-11-25 15:32:51,291 INFO L78 Accepts]: Start accepts. Automaton has 1715 states and 2778 transitions. Word has length 71 [2022-11-25 15:32:51,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:32:51,291 INFO L495 AbstractCegarLoop]: Abstraction has 1715 states and 2778 transitions. [2022-11-25 15:32:51,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:32:51,292 INFO L276 IsEmpty]: Start isEmpty. Operand 1715 states and 2778 transitions. [2022-11-25 15:32:51,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-25 15:32:51,294 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:32:51,294 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, 1, 1, 1, 1, 1] [2022-11-25 15:32:51,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 15:32:51,295 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:32:51,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:32:51,295 INFO L85 PathProgramCache]: Analyzing trace with hash -16317691, now seen corresponding path program 1 times [2022-11-25 15:32:51,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:32:51,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786291115] [2022-11-25 15:32:51,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:32:51,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:32:51,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:51,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:32:51,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:32:51,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786291115] [2022-11-25 15:32:51,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786291115] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:32:51,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:32:51,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 15:32:51,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232313737] [2022-11-25 15:32:51,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:32:51,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:32:51,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:32:51,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:32:51,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:32:51,399 INFO L87 Difference]: Start difference. First operand 1715 states and 2778 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:32:51,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:32:51,772 INFO L93 Difference]: Finished difference Result 4945 states and 8083 transitions. [2022-11-25 15:32:51,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 15:32:51,773 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-11-25 15:32:51,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:32:51,786 INFO L225 Difference]: With dead ends: 4945 [2022-11-25 15:32:51,786 INFO L226 Difference]: Without dead ends: 3287 [2022-11-25 15:32:51,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:32:51,792 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 307 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:32:51,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 598 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:32:51,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3287 states. [2022-11-25 15:32:51,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3287 to 2485. [2022-11-25 15:32:51,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2485 states, 2484 states have (on average 1.6191626409017714) internal successors, (4022), 2484 states have internal predecessors, (4022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:32:51,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2485 states to 2485 states and 4022 transitions. [2022-11-25 15:32:51,992 INFO L78 Accepts]: Start accepts. Automaton has 2485 states and 4022 transitions. Word has length 72 [2022-11-25 15:32:51,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:32:51,992 INFO L495 AbstractCegarLoop]: Abstraction has 2485 states and 4022 transitions. [2022-11-25 15:32:51,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:32:51,993 INFO L276 IsEmpty]: Start isEmpty. Operand 2485 states and 4022 transitions. [2022-11-25 15:32:51,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-25 15:32:51,995 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:32:51,995 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, 1, 1, 1, 1, 1] [2022-11-25 15:32:51,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 15:32:51,995 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:32:51,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:32:51,997 INFO L85 PathProgramCache]: Analyzing trace with hash 2114412097, now seen corresponding path program 1 times [2022-11-25 15:32:51,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:32:51,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307404245] [2022-11-25 15:32:51,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:32:51,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:32:52,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:52,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:32:52,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:32:52,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307404245] [2022-11-25 15:32:52,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307404245] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:32:52,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:32:52,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:32:52,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635703421] [2022-11-25 15:32:52,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:32:52,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:32:52,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:32:52,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:32:52,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:32:52,087 INFO L87 Difference]: Start difference. First operand 2485 states and 4022 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:32:52,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:32:52,375 INFO L93 Difference]: Finished difference Result 5720 states and 9268 transitions. [2022-11-25 15:32:52,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:32:52,376 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-11-25 15:32:52,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:32:52,392 INFO L225 Difference]: With dead ends: 5720 [2022-11-25 15:32:52,392 INFO L226 Difference]: Without dead ends: 3950 [2022-11-25 15:32:52,396 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 [2022-11-25 15:32:52,397 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 78 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 384 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 [2022-11-25 15:32:52,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 384 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:32:52,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3950 states. [2022-11-25 15:32:52,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3950 to 3948. [2022-11-25 15:32:52,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3948 states, 3947 states have (on average 1.6017228274638966) internal successors, (6322), 3947 states have internal predecessors, (6322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:32:52,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3948 states to 3948 states and 6322 transitions. [2022-11-25 15:32:52,826 INFO L78 Accepts]: Start accepts. Automaton has 3948 states and 6322 transitions. Word has length 72 [2022-11-25 15:32:52,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:32:52,827 INFO L495 AbstractCegarLoop]: Abstraction has 3948 states and 6322 transitions. [2022-11-25 15:32:52,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:32:52,827 INFO L276 IsEmpty]: Start isEmpty. Operand 3948 states and 6322 transitions. [2022-11-25 15:32:52,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-25 15:32:52,829 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:32:52,829 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, 1, 1, 1, 1, 1] [2022-11-25 15:32:52,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 15:32:52,829 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:32:52,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:32:52,830 INFO L85 PathProgramCache]: Analyzing trace with hash -33308114, now seen corresponding path program 1 times [2022-11-25 15:32:52,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:32:52,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076531341] [2022-11-25 15:32:52,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:32:52,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:32:52,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:52,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:32:52,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:32:52,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076531341] [2022-11-25 15:32:52,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076531341] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:32:52,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:32:52,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:32:52,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667017048] [2022-11-25 15:32:52,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:32:52,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:32:52,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:32:52,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:32:52,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:32:52,939 INFO L87 Difference]: Start difference. First operand 3948 states and 6322 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:32:53,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:32:53,435 INFO L93 Difference]: Finished difference Result 8740 states and 14052 transitions. [2022-11-25 15:32:53,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:32:53,436 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-11-25 15:32:53,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:32:53,460 INFO L225 Difference]: With dead ends: 8740 [2022-11-25 15:32:53,461 INFO L226 Difference]: Without dead ends: 5943 [2022-11-25 15:32:53,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:32:53,467 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 84 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 407 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 [2022-11-25 15:32:53,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 407 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:32:53,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5943 states. [2022-11-25 15:32:53,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5943 to 5941. [2022-11-25 15:32:54,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5941 states, 5940 states have (on average 1.59006734006734) internal successors, (9445), 5940 states have internal predecessors, (9445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:32:54,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5941 states to 5941 states and 9445 transitions. [2022-11-25 15:32:54,017 INFO L78 Accepts]: Start accepts. Automaton has 5941 states and 9445 transitions. Word has length 72 [2022-11-25 15:32:54,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:32:54,018 INFO L495 AbstractCegarLoop]: Abstraction has 5941 states and 9445 transitions. [2022-11-25 15:32:54,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:32:54,018 INFO L276 IsEmpty]: Start isEmpty. Operand 5941 states and 9445 transitions. [2022-11-25 15:32:54,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-25 15:32:54,019 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:32:54,020 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:32:54,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 15:32:54,020 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:32:54,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:32:54,021 INFO L85 PathProgramCache]: Analyzing trace with hash -816632547, now seen corresponding path program 1 times [2022-11-25 15:32:54,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:32:54,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399656861] [2022-11-25 15:32:54,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:32:54,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:32:54,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:54,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:32:54,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:32:54,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399656861] [2022-11-25 15:32:54,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399656861] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:32:54,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:32:54,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:32:54,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516733391] [2022-11-25 15:32:54,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:32:54,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:32:54,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:32:54,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:32:54,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:32:54,128 INFO L87 Difference]: Start difference. First operand 5941 states and 9445 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:32:54,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:32:54,971 INFO L93 Difference]: Finished difference Result 13469 states and 21666 transitions. [2022-11-25 15:32:54,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:32:54,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-11-25 15:32:54,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:32:55,027 INFO L225 Difference]: With dead ends: 13469 [2022-11-25 15:32:55,027 INFO L226 Difference]: Without dead ends: 9099 [2022-11-25 15:32:55,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:32:55,034 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 90 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 422 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 [2022-11-25 15:32:55,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 422 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:32:55,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9099 states. [2022-11-25 15:32:55,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9099 to 9097. [2022-11-25 15:32:55,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9097 states, 9096 states have (on average 1.584212840809147) internal successors, (14410), 9096 states have internal predecessors, (14410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:32:55,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9097 states to 9097 states and 14410 transitions. [2022-11-25 15:32:55,892 INFO L78 Accepts]: Start accepts. Automaton has 9097 states and 14410 transitions. Word has length 72 [2022-11-25 15:32:55,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:32:55,892 INFO L495 AbstractCegarLoop]: Abstraction has 9097 states and 14410 transitions. [2022-11-25 15:32:55,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:32:55,893 INFO L276 IsEmpty]: Start isEmpty. Operand 9097 states and 14410 transitions. [2022-11-25 15:32:55,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-25 15:32:55,894 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:32:55,895 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:32:55,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 15:32:55,895 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:32:55,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:32:55,896 INFO L85 PathProgramCache]: Analyzing trace with hash -628954083, now seen corresponding path program 1 times [2022-11-25 15:32:55,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:32:55,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978566104] [2022-11-25 15:32:55,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:32:55,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:32:55,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:56,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:32:56,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:32:56,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978566104] [2022-11-25 15:32:56,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978566104] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:32:56,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:32:56,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 15:32:56,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295463663] [2022-11-25 15:32:56,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:32:56,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:32:56,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:32:56,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:32:56,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:32:56,143 INFO L87 Difference]: Start difference. First operand 9097 states and 14410 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:32:57,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:32:57,011 INFO L93 Difference]: Finished difference Result 18125 states and 28728 transitions. [2022-11-25 15:32:57,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:32:57,012 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-11-25 15:32:57,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:32:57,039 INFO L225 Difference]: With dead ends: 18125 [2022-11-25 15:32:57,039 INFO L226 Difference]: Without dead ends: 9099 [2022-11-25 15:32:57,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-25 15:32:57,053 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 159 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:32:57,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 490 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:32:57,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9099 states. [2022-11-25 15:32:58,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9099 to 9097. [2022-11-25 15:32:58,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9097 states, 9096 states have (on average 1.5704705364995601) internal successors, (14285), 9096 states have internal predecessors, (14285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:32:58,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9097 states to 9097 states and 14285 transitions. [2022-11-25 15:32:58,068 INFO L78 Accepts]: Start accepts. Automaton has 9097 states and 14285 transitions. Word has length 74 [2022-11-25 15:32:58,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:32:58,068 INFO L495 AbstractCegarLoop]: Abstraction has 9097 states and 14285 transitions. [2022-11-25 15:32:58,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:32:58,069 INFO L276 IsEmpty]: Start isEmpty. Operand 9097 states and 14285 transitions. [2022-11-25 15:32:58,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-25 15:32:58,070 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:32:58,070 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:32:58,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 15:32:58,070 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:32:58,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:32:58,071 INFO L85 PathProgramCache]: Analyzing trace with hash -820820622, now seen corresponding path program 1 times [2022-11-25 15:32:58,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:32:58,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548180093] [2022-11-25 15:32:58,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:32:58,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:32:58,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:32:58,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:32:58,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:32:58,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548180093] [2022-11-25 15:32:58,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548180093] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:32:58,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:32:58,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 15:32:58,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581216452] [2022-11-25 15:32:58,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:32:58,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:32:58,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:32:58,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:32:58,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:32:58,365 INFO L87 Difference]: Start difference. First operand 9097 states and 14285 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:32:59,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:32:59,702 INFO L93 Difference]: Finished difference Result 26071 states and 41096 transitions. [2022-11-25 15:32:59,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:32:59,703 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-25 15:32:59,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:32:59,750 INFO L225 Difference]: With dead ends: 26071 [2022-11-25 15:32:59,751 INFO L226 Difference]: Without dead ends: 17045 [2022-11-25 15:32:59,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-25 15:32:59,763 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 232 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 15:32:59,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 492 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 15:32:59,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17045 states. [2022-11-25 15:33:00,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17045 to 17043. [2022-11-25 15:33:00,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17043 states, 17042 states have (on average 1.5558033094707193) internal successors, (26514), 17042 states have internal predecessors, (26514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:33:00,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17043 states to 17043 states and 26514 transitions. [2022-11-25 15:33:00,991 INFO L78 Accepts]: Start accepts. Automaton has 17043 states and 26514 transitions. Word has length 77 [2022-11-25 15:33:00,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:33:00,991 INFO L495 AbstractCegarLoop]: Abstraction has 17043 states and 26514 transitions. [2022-11-25 15:33:00,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:33:00,992 INFO L276 IsEmpty]: Start isEmpty. Operand 17043 states and 26514 transitions. [2022-11-25 15:33:00,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-25 15:33:00,993 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:33:00,993 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:33:00,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 15:33:00,994 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:33:00,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:33:00,994 INFO L85 PathProgramCache]: Analyzing trace with hash -104211194, now seen corresponding path program 1 times [2022-11-25 15:33:00,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:33:00,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449989040] [2022-11-25 15:33:00,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:33:00,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:33:01,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:01,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:33:01,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:33:01,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449989040] [2022-11-25 15:33:01,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449989040] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:33:01,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:33:01,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 15:33:01,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748446093] [2022-11-25 15:33:01,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:33:01,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:33:01,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:33:01,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:33:01,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:33:01,309 INFO L87 Difference]: Start difference. First operand 17043 states and 26514 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:33:03,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:33:03,394 INFO L93 Difference]: Finished difference Result 33743 states and 51836 transitions. [2022-11-25 15:33:03,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 15:33:03,394 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2022-11-25 15:33:03,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:33:03,488 INFO L225 Difference]: With dead ends: 33743 [2022-11-25 15:33:03,488 INFO L226 Difference]: Without dead ends: 33741 [2022-11-25 15:33:03,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 15:33:03,497 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 269 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:33:03,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 776 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:33:03,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33741 states. [2022-11-25 15:33:04,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33741 to 18129. [2022-11-25 15:33:04,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18129 states, 18128 states have (on average 1.5220101500441305) internal successors, (27591), 18128 states have internal predecessors, (27591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:33:04,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18129 states to 18129 states and 27591 transitions. [2022-11-25 15:33:04,957 INFO L78 Accepts]: Start accepts. Automaton has 18129 states and 27591 transitions. Word has length 78 [2022-11-25 15:33:04,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:33:04,957 INFO L495 AbstractCegarLoop]: Abstraction has 18129 states and 27591 transitions. [2022-11-25 15:33:04,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:33:04,958 INFO L276 IsEmpty]: Start isEmpty. Operand 18129 states and 27591 transitions. [2022-11-25 15:33:04,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-25 15:33:04,961 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:33:04,961 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:33:04,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 15:33:04,962 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:33:04,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:33:04,962 INFO L85 PathProgramCache]: Analyzing trace with hash -702667206, now seen corresponding path program 1 times [2022-11-25 15:33:04,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:33:04,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404025665] [2022-11-25 15:33:04,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:33:04,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:33:04,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:05,059 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 15:33:05,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:33:05,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404025665] [2022-11-25 15:33:05,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404025665] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:33:05,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:33:05,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:33:05,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965657535] [2022-11-25 15:33:05,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:33:05,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:33:05,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:33:05,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:33:05,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:33:05,062 INFO L87 Difference]: Start difference. First operand 18129 states and 27591 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:33:08,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:33:08,066 INFO L93 Difference]: Finished difference Result 54135 states and 82316 transitions. [2022-11-25 15:33:08,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:33:08,067 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 105 [2022-11-25 15:33:08,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:33:08,174 INFO L225 Difference]: With dead ends: 54135 [2022-11-25 15:33:08,174 INFO L226 Difference]: Without dead ends: 36068 [2022-11-25 15:33:08,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:33:08,214 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 117 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:33:08,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 419 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:33:08,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36068 states. [2022-11-25 15:33:10,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36068 to 36066. [2022-11-25 15:33:10,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36066 states, 36065 states have (on average 1.507999445445723) internal successors, (54386), 36065 states have internal predecessors, (54386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:33:10,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36066 states to 36066 states and 54386 transitions. [2022-11-25 15:33:10,952 INFO L78 Accepts]: Start accepts. Automaton has 36066 states and 54386 transitions. Word has length 105 [2022-11-25 15:33:10,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:33:10,952 INFO L495 AbstractCegarLoop]: Abstraction has 36066 states and 54386 transitions. [2022-11-25 15:33:10,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:33:10,953 INFO L276 IsEmpty]: Start isEmpty. Operand 36066 states and 54386 transitions. [2022-11-25 15:33:10,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-25 15:33:10,957 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:33:10,957 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:33:10,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-25 15:33:10,958 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:33:10,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:33:10,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1444579879, now seen corresponding path program 1 times [2022-11-25 15:33:10,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:33:10,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201418899] [2022-11-25 15:33:10,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:33:10,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:33:10,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:11,088 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 15:33:11,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:33:11,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201418899] [2022-11-25 15:33:11,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201418899] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:33:11,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:33:11,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:33:11,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188869701] [2022-11-25 15:33:11,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:33:11,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:33:11,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:33:11,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:33:11,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:33:11,092 INFO L87 Difference]: Start difference. First operand 36066 states and 54386 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:33:16,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:33:16,042 INFO L93 Difference]: Finished difference Result 107714 states and 162278 transitions. [2022-11-25 15:33:16,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:33:16,043 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 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 105 [2022-11-25 15:33:16,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 15:33:16,223 INFO L225 Difference]: With dead ends: 107714 [2022-11-25 15:33:16,223 INFO L226 Difference]: Without dead ends: 71753 [2022-11-25 15:33:16,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:33:16,272 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 103 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 15:33:16,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 404 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 15:33:16,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71753 states. [2022-11-25 15:33:21,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71753 to 71751. [2022-11-25 15:33:21,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71751 states, 71750 states have (on average 1.4938257839721254) internal successors, (107182), 71750 states have internal predecessors, (107182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:33:22,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71751 states to 71751 states and 107182 transitions. [2022-11-25 15:33:22,325 INFO L78 Accepts]: Start accepts. Automaton has 71751 states and 107182 transitions. Word has length 105 [2022-11-25 15:33:22,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 15:33:22,326 INFO L495 AbstractCegarLoop]: Abstraction has 71751 states and 107182 transitions. [2022-11-25 15:33:22,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:33:22,340 INFO L276 IsEmpty]: Start isEmpty. Operand 71751 states and 107182 transitions. [2022-11-25 15:33:22,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-25 15:33:22,347 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 15:33:22,347 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:33:22,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-25 15:33:22,348 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 15:33:22,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:33:22,349 INFO L85 PathProgramCache]: Analyzing trace with hash 661255446, now seen corresponding path program 1 times [2022-11-25 15:33:22,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:33:22,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716566787] [2022-11-25 15:33:22,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:33:22,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:33:22,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:33:22,470 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:33:22,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:33:22,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716566787] [2022-11-25 15:33:22,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716566787] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:33:22,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:33:22,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:33:22,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855630991] [2022-11-25 15:33:22,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:33:22,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:33:22,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:33:22,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:33:22,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:33:22,473 INFO L87 Difference]: Start difference. First operand 71751 states and 107182 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)