./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label06.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label06.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN --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 6ccc8126940cf3f46bcb3993cc3f2567a1d57b3d9eef9ad8f60ee950111ffdfc --- 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-6b4ec56 [2022-11-20 12:34:06,185 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:34:06,187 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:34:06,209 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:34:06,214 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:34:06,216 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:34:06,218 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:34:06,223 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:34:06,226 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:34:06,229 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:34:06,231 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:34:06,233 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:34:06,234 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:34:06,238 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:34:06,239 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:34:06,241 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:34:06,243 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:34:06,249 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:34:06,250 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:34:06,253 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:34:06,258 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:34:06,259 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:34:06,262 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:34:06,263 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:34:06,267 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:34:06,270 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:34:06,272 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:34:06,274 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:34:06,275 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:34:06,277 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:34:06,279 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:34:06,280 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:34:06,282 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:34:06,283 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:34:06,285 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:34:06,287 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:34:06,288 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:34:06,288 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:34:06,288 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:34:06,291 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:34:06,292 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:34:06,293 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 12:34:06,334 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:34:06,334 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:34:06,335 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:34:06,335 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:34:06,336 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:34:06,337 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:34:06,337 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:34:06,338 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:34:06,338 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:34:06,338 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:34:06,339 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:34:06,340 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:34:06,340 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:34:06,340 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:34:06,340 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:34:06,341 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:34:06,341 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:34:06,341 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:34:06,341 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:34:06,342 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:34:06,342 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:34:06,342 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:34:06,343 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:34:06,343 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:34:06,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:34:06,343 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:34:06,344 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:34:06,344 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:34:06,344 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:34:06,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:34:06,345 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:34:06,345 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:34:06,345 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:34:06,346 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ccc8126940cf3f46bcb3993cc3f2567a1d57b3d9eef9ad8f60ee950111ffdfc [2022-11-20 12:34:06,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:34:06,746 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:34:06,749 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:34:06,750 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:34:06,751 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:34:06,752 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label06.c [2022-11-20 12:34:09,816 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:34:10,410 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:34:10,411 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label06.c [2022-11-20 12:34:10,441 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/data/a3dd21d04/fb3c46400f704e90914ce68859684fc9/FLAG82fcac598 [2022-11-20 12:34:10,461 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/data/a3dd21d04/fb3c46400f704e90914ce68859684fc9 [2022-11-20 12:34:10,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:34:10,468 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:34:10,470 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:34:10,471 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:34:10,474 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:34:10,475 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:34:10" (1/1) ... [2022-11-20 12:34:10,476 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cfd62b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:34:10, skipping insertion in model container [2022-11-20 12:34:10,477 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:34:10" (1/1) ... [2022-11-20 12:34:10,485 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:34:10,620 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:34:10,910 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_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label06.c[8616,8629] [2022-11-20 12:34:10,948 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_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label06.c[11433,11446] [2022-11-20 12:34:12,049 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:34:12,063 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:34:12,118 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_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label06.c[8616,8629] [2022-11-20 12:34:12,124 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_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/sv-benchmarks/c/combinations/pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label06.c[11433,11446] [2022-11-20 12:34:12,713 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:34:12,743 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:34:12,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:34:12 WrapperNode [2022-11-20 12:34:12,744 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:34:12,746 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:34:12,746 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:34:12,746 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:34:12,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:34:12" (1/1) ... [2022-11-20 12:34:12,805 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:34:12" (1/1) ... [2022-11-20 12:34:13,217 INFO L138 Inliner]: procedures = 34, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 5015 [2022-11-20 12:34:13,218 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:34:13,219 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:34:13,219 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:34:13,219 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:34:13,230 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:34:12" (1/1) ... [2022-11-20 12:34:13,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:34:12" (1/1) ... [2022-11-20 12:34:13,379 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:34:12" (1/1) ... [2022-11-20 12:34:13,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:34:12" (1/1) ... [2022-11-20 12:34:13,523 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:34:12" (1/1) ... [2022-11-20 12:34:13,598 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:34:12" (1/1) ... [2022-11-20 12:34:13,648 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:34:12" (1/1) ... [2022-11-20 12:34:13,662 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:34:12" (1/1) ... [2022-11-20 12:34:13,775 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:34:13,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:34:13,777 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:34:13,778 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:34:13,781 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:34:12" (1/1) ... [2022-11-20 12:34:13,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:34:13,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:34:13,859 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:34:13,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:34:13,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:34:13,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:34:13,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:34:13,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:34:14,160 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:34:14,195 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:34:19,916 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:34:19,942 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:34:19,948 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 12:34:19,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:34:19 BoogieIcfgContainer [2022-11-20 12:34:19,953 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:34:19,956 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:34:19,956 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:34:19,959 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:34:19,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:34:10" (1/3) ... [2022-11-20 12:34:19,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c018fa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:34:19, skipping insertion in model container [2022-11-20 12:34:19,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:34:12" (2/3) ... [2022-11-20 12:34:19,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c018fa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:34:19, skipping insertion in model container [2022-11-20 12:34:19,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:34:19" (3/3) ... [2022-11-20 12:34:19,968 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.BOUNDED-8.pals+Problem12_label06.c [2022-11-20 12:34:19,989 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:34:19,989 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-20 12:34:20,161 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:34:20,170 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;@3fcbb43, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:34:20,171 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-20 12:34:20,181 INFO L276 IsEmpty]: Start isEmpty. Operand has 885 states, 882 states have (on average 1.9058956916099774) internal successors, (1681), 884 states have internal predecessors, (1681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:20,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-20 12:34:20,193 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:34:20,194 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:34:20,195 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:34:20,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:20,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1141430702, now seen corresponding path program 1 times [2022-11-20 12:34:20,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:20,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628688991] [2022-11-20 12:34:20,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:20,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:20,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:20,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:20,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:20,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628688991] [2022-11-20 12:34:20,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628688991] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:20,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:20,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:34:20,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001818121] [2022-11-20 12:34:20,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:20,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 12:34:20,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:20,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 12:34:20,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 12:34:20,523 INFO L87 Difference]: Start difference. First operand has 885 states, 882 states have (on average 1.9058956916099774) internal successors, (1681), 884 states have internal predecessors, (1681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:20,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:34:20,610 INFO L93 Difference]: Finished difference Result 1741 states and 3308 transitions. [2022-11-20 12:34:20,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 12:34:20,613 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-20 12:34:20,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:34:20,630 INFO L225 Difference]: With dead ends: 1741 [2022-11-20 12:34:20,631 INFO L226 Difference]: Without dead ends: 819 [2022-11-20 12:34:20,637 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 [2022-11-20 12:34:20,640 INFO L413 NwaCegarLoop]: 1615 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:34:20,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1615 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:34:20,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2022-11-20 12:34:20,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 819. [2022-11-20 12:34:20,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 817 states have (on average 1.894736842105263) internal successors, (1548), 818 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:20,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1548 transitions. [2022-11-20 12:34:20,740 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1548 transitions. Word has length 22 [2022-11-20 12:34:20,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:34:20,742 INFO L495 AbstractCegarLoop]: Abstraction has 819 states and 1548 transitions. [2022-11-20 12:34:20,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:20,743 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1548 transitions. [2022-11-20 12:34:20,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-20 12:34:20,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:34:20,746 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:34:20,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:34:20,747 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:34:20,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:20,747 INFO L85 PathProgramCache]: Analyzing trace with hash 120362348, now seen corresponding path program 1 times [2022-11-20 12:34:20,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:20,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835348619] [2022-11-20 12:34:20,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:20,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:20,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:20,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:20,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:20,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835348619] [2022-11-20 12:34:20,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835348619] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:20,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:20,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:34:20,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004961215] [2022-11-20 12:34:20,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:20,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:34:20,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:20,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:34:21,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:34:21,001 INFO L87 Difference]: Start difference. First operand 819 states and 1548 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:21,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:34:21,179 INFO L93 Difference]: Finished difference Result 895 states and 1666 transitions. [2022-11-20 12:34:21,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:34:21,181 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-20 12:34:21,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:34:21,186 INFO L225 Difference]: With dead ends: 895 [2022-11-20 12:34:21,187 INFO L226 Difference]: Without dead ends: 855 [2022-11-20 12:34:21,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:34:21,191 INFO L413 NwaCegarLoop]: 1544 mSDtfsCounter, 59 mSDsluCounter, 4604 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 6148 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:34:21,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 6148 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:34:21,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2022-11-20 12:34:21,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 819. [2022-11-20 12:34:21,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 817 states have (on average 1.8665850673194615) internal successors, (1525), 818 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:21,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1525 transitions. [2022-11-20 12:34:21,238 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1525 transitions. Word has length 22 [2022-11-20 12:34:21,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:34:21,238 INFO L495 AbstractCegarLoop]: Abstraction has 819 states and 1525 transitions. [2022-11-20 12:34:21,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:21,240 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1525 transitions. [2022-11-20 12:34:21,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-20 12:34:21,244 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:34:21,245 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] [2022-11-20 12:34:21,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:34:21,246 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:34:21,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:21,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1481273845, now seen corresponding path program 1 times [2022-11-20 12:34:21,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:21,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682279166] [2022-11-20 12:34:21,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:21,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:21,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:21,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:21,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:21,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682279166] [2022-11-20 12:34:21,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682279166] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:21,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:21,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:34:21,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575198544] [2022-11-20 12:34:21,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:21,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:34:21,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:21,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:34:21,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:34:21,388 INFO L87 Difference]: Start difference. First operand 819 states and 1525 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:26,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:34:26,031 INFO L93 Difference]: Finished difference Result 2323 states and 4398 transitions. [2022-11-20 12:34:26,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:34:26,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2022-11-20 12:34:26,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:34:26,039 INFO L225 Difference]: With dead ends: 2323 [2022-11-20 12:34:26,039 INFO L226 Difference]: Without dead ends: 1570 [2022-11-20 12:34:26,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:34:26,042 INFO L413 NwaCegarLoop]: 507 mSDtfsCounter, 880 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2274 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 880 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 2865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 2274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:34:26,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [880 Valid, 514 Invalid, 2865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 2274 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-20 12:34:26,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2022-11-20 12:34:26,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 1570. [2022-11-20 12:34:26,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1570 states, 1568 states have (on average 1.6275510204081634) internal successors, (2552), 1569 states have internal predecessors, (2552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:26,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 2552 transitions. [2022-11-20 12:34:26,081 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 2552 transitions. Word has length 24 [2022-11-20 12:34:26,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:34:26,082 INFO L495 AbstractCegarLoop]: Abstraction has 1570 states and 2552 transitions. [2022-11-20 12:34:26,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:26,082 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 2552 transitions. [2022-11-20 12:34:26,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-20 12:34:26,086 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:34:26,086 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:34:26,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 12:34:26,087 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:34:26,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:26,087 INFO L85 PathProgramCache]: Analyzing trace with hash 550762215, now seen corresponding path program 1 times [2022-11-20 12:34:26,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:26,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605139803] [2022-11-20 12:34:26,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:26,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:26,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:26,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:26,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:26,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605139803] [2022-11-20 12:34:26,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605139803] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:26,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:26,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:34:26,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678189735] [2022-11-20 12:34:26,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:26,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:34:26,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:26,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:34:26,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:34:26,305 INFO L87 Difference]: Start difference. First operand 1570 states and 2552 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:26,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:34:26,495 INFO L93 Difference]: Finished difference Result 1858 states and 3008 transitions. [2022-11-20 12:34:26,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:34:26,495 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2022-11-20 12:34:26,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:34:26,503 INFO L225 Difference]: With dead ends: 1858 [2022-11-20 12:34:26,504 INFO L226 Difference]: Without dead ends: 1822 [2022-11-20 12:34:26,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:34:26,506 INFO L413 NwaCegarLoop]: 1521 mSDtfsCounter, 6262 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6262 SdHoareTripleChecker+Valid, 2187 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:34:26,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6262 Valid, 2187 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:34:26,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1822 states. [2022-11-20 12:34:26,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1822 to 1604. [2022-11-20 12:34:26,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1604 states, 1602 states have (on average 1.626716604244694) internal successors, (2606), 1603 states have internal predecessors, (2606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:26,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2606 transitions. [2022-11-20 12:34:26,553 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2606 transitions. Word has length 44 [2022-11-20 12:34:26,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:34:26,554 INFO L495 AbstractCegarLoop]: Abstraction has 1604 states and 2606 transitions. [2022-11-20 12:34:26,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:26,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2606 transitions. [2022-11-20 12:34:26,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-20 12:34:26,556 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:34:26,556 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:34:26,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 12:34:26,556 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:34:26,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:26,557 INFO L85 PathProgramCache]: Analyzing trace with hash -414187945, now seen corresponding path program 1 times [2022-11-20 12:34:26,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:26,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985337151] [2022-11-20 12:34:26,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:26,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:26,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:26,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:26,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:26,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985337151] [2022-11-20 12:34:26,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985337151] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:26,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:26,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:34:26,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868970428] [2022-11-20 12:34:26,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:26,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:34:26,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:26,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:34:26,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:34:26,625 INFO L87 Difference]: Start difference. First operand 1604 states and 2606 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:26,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:34:26,680 INFO L93 Difference]: Finished difference Result 1733 states and 2809 transitions. [2022-11-20 12:34:26,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:34:26,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-11-20 12:34:26,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:34:26,687 INFO L225 Difference]: With dead ends: 1733 [2022-11-20 12:34:26,688 INFO L226 Difference]: Without dead ends: 1663 [2022-11-20 12:34:26,689 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 [2022-11-20 12:34:26,692 INFO L413 NwaCegarLoop]: 1523 mSDtfsCounter, 1474 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1575 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:34:26,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1575 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:34:26,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1663 states. [2022-11-20 12:34:26,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1663 to 1661. [2022-11-20 12:34:26,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1661 states, 1659 states have (on average 1.623869801084991) internal successors, (2694), 1660 states have internal predecessors, (2694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:26,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1661 states to 1661 states and 2694 transitions. [2022-11-20 12:34:26,744 INFO L78 Accepts]: Start accepts. Automaton has 1661 states and 2694 transitions. Word has length 46 [2022-11-20 12:34:26,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:34:26,750 INFO L495 AbstractCegarLoop]: Abstraction has 1661 states and 2694 transitions. [2022-11-20 12:34:26,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:26,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1661 states and 2694 transitions. [2022-11-20 12:34:26,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-20 12:34:26,757 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:34:26,757 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:34:26,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 12:34:26,757 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:34:26,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:26,758 INFO L85 PathProgramCache]: Analyzing trace with hash -347694433, now seen corresponding path program 1 times [2022-11-20 12:34:26,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:26,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715455352] [2022-11-20 12:34:26,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:26,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:26,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:27,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:27,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:27,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715455352] [2022-11-20 12:34:27,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715455352] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:27,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:27,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:34:27,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854601540] [2022-11-20 12:34:27,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:27,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:34:27,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:27,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:34:27,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:34:27,092 INFO L87 Difference]: Start difference. First operand 1661 states and 2694 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:27,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:34:27,243 INFO L93 Difference]: Finished difference Result 1790 states and 2894 transitions. [2022-11-20 12:34:27,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:34:27,243 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-11-20 12:34:27,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:34:27,250 INFO L225 Difference]: With dead ends: 1790 [2022-11-20 12:34:27,251 INFO L226 Difference]: Without dead ends: 1663 [2022-11-20 12:34:27,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:34:27,253 INFO L413 NwaCegarLoop]: 1519 mSDtfsCounter, 5996 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5996 SdHoareTripleChecker+Valid, 1678 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:34:27,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5996 Valid, 1678 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:34:27,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1663 states. [2022-11-20 12:34:27,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1663 to 1661. [2022-11-20 12:34:27,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1661 states, 1659 states have (on average 1.622664255575648) internal successors, (2692), 1660 states have internal predecessors, (2692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:27,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1661 states to 1661 states and 2692 transitions. [2022-11-20 12:34:27,300 INFO L78 Accepts]: Start accepts. Automaton has 1661 states and 2692 transitions. Word has length 46 [2022-11-20 12:34:27,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:34:27,300 INFO L495 AbstractCegarLoop]: Abstraction has 1661 states and 2692 transitions. [2022-11-20 12:34:27,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:27,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1661 states and 2692 transitions. [2022-11-20 12:34:27,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-20 12:34:27,302 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:34:27,302 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:34:27,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 12:34:27,302 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:34:27,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:27,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1691651312, now seen corresponding path program 1 times [2022-11-20 12:34:27,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:27,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247387697] [2022-11-20 12:34:27,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:27,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:27,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:27,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:27,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:27,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247387697] [2022-11-20 12:34:27,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247387697] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:27,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:27,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:34:27,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167623013] [2022-11-20 12:34:27,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:27,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:34:27,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:27,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:34:27,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:34:27,465 INFO L87 Difference]: Start difference. First operand 1661 states and 2692 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:27,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:34:27,561 INFO L93 Difference]: Finished difference Result 1785 states and 2879 transitions. [2022-11-20 12:34:27,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:34:27,562 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2022-11-20 12:34:27,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:34:27,569 INFO L225 Difference]: With dead ends: 1785 [2022-11-20 12:34:27,569 INFO L226 Difference]: Without dead ends: 1783 [2022-11-20 12:34:27,570 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 [2022-11-20 12:34:27,571 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 142 mSDsluCounter, 4577 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 6150 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:34:27,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 6150 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:34:27,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1783 states. [2022-11-20 12:34:27,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1783 to 1667. [2022-11-20 12:34:27,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1667 states, 1665 states have (on average 1.61981981981982) internal successors, (2697), 1666 states have internal predecessors, (2697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:27,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 2697 transitions. [2022-11-20 12:34:27,622 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 2697 transitions. Word has length 47 [2022-11-20 12:34:27,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:34:27,622 INFO L495 AbstractCegarLoop]: Abstraction has 1667 states and 2697 transitions. [2022-11-20 12:34:27,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:27,623 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 2697 transitions. [2022-11-20 12:34:27,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-20 12:34:27,624 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:34:27,624 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:34:27,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 12:34:27,624 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:34:27,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:27,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1538886047, now seen corresponding path program 1 times [2022-11-20 12:34:27,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:27,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567379880] [2022-11-20 12:34:27,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:27,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:27,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:27,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:27,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:27,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567379880] [2022-11-20 12:34:27,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567379880] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:27,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:27,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:34:27,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555198552] [2022-11-20 12:34:27,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:27,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:34:27,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:27,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:34:27,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:34:27,676 INFO L87 Difference]: Start difference. First operand 1667 states and 2697 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:27,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:34:27,728 INFO L93 Difference]: Finished difference Result 1813 states and 2918 transitions. [2022-11-20 12:34:27,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:34:27,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-11-20 12:34:27,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:34:27,736 INFO L225 Difference]: With dead ends: 1813 [2022-11-20 12:34:27,736 INFO L226 Difference]: Without dead ends: 1737 [2022-11-20 12:34:27,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:34:27,738 INFO L413 NwaCegarLoop]: 1567 mSDtfsCounter, 1486 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 1625 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:34:27,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 1625 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:34:27,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1737 states. [2022-11-20 12:34:27,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1737 to 1735. [2022-11-20 12:34:27,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1735 states, 1733 states have (on average 1.6145412579342182) internal successors, (2798), 1734 states have internal predecessors, (2798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:27,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1735 states to 1735 states and 2798 transitions. [2022-11-20 12:34:27,796 INFO L78 Accepts]: Start accepts. Automaton has 1735 states and 2798 transitions. Word has length 48 [2022-11-20 12:34:27,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:34:27,796 INFO L495 AbstractCegarLoop]: Abstraction has 1735 states and 2798 transitions. [2022-11-20 12:34:27,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:27,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1735 states and 2798 transitions. [2022-11-20 12:34:27,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-20 12:34:27,798 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:34:27,798 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:34:27,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 12:34:27,798 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:34:27,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:27,799 INFO L85 PathProgramCache]: Analyzing trace with hash 561679263, now seen corresponding path program 1 times [2022-11-20 12:34:27,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:27,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580098246] [2022-11-20 12:34:27,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:27,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:27,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:27,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:27,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:27,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580098246] [2022-11-20 12:34:27,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580098246] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:27,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:27,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:34:27,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293454280] [2022-11-20 12:34:27,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:27,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:34:27,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:27,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:34:27,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:34:27,846 INFO L87 Difference]: Start difference. First operand 1735 states and 2798 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:27,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:34:27,914 INFO L93 Difference]: Finished difference Result 2109 states and 3358 transitions. [2022-11-20 12:34:27,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:34:27,914 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-11-20 12:34:27,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:34:27,921 INFO L225 Difference]: With dead ends: 2109 [2022-11-20 12:34:27,922 INFO L226 Difference]: Without dead ends: 1910 [2022-11-20 12:34:27,923 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 [2022-11-20 12:34:27,924 INFO L413 NwaCegarLoop]: 1559 mSDtfsCounter, 1482 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1625 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:34:27,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1625 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:34:27,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1910 states. [2022-11-20 12:34:27,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1910 to 1908. [2022-11-20 12:34:28,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1908 states, 1906 states have (on average 1.6002098635886675) internal successors, (3050), 1907 states have internal predecessors, (3050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:28,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1908 states to 1908 states and 3050 transitions. [2022-11-20 12:34:28,006 INFO L78 Accepts]: Start accepts. Automaton has 1908 states and 3050 transitions. Word has length 48 [2022-11-20 12:34:28,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:34:28,007 INFO L495 AbstractCegarLoop]: Abstraction has 1908 states and 3050 transitions. [2022-11-20 12:34:28,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:28,008 INFO L276 IsEmpty]: Start isEmpty. Operand 1908 states and 3050 transitions. [2022-11-20 12:34:28,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-20 12:34:28,009 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:34:28,009 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:34:28,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 12:34:28,009 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:34:28,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:28,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1952355169, now seen corresponding path program 1 times [2022-11-20 12:34:28,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:28,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954091439] [2022-11-20 12:34:28,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:28,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:28,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:28,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:28,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:28,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954091439] [2022-11-20 12:34:28,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954091439] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:28,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:28,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:34:28,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442232054] [2022-11-20 12:34:28,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:28,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:34:28,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:28,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:34:28,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:34:28,098 INFO L87 Difference]: Start difference. First operand 1908 states and 3050 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:28,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:34:28,272 INFO L93 Difference]: Finished difference Result 2604 states and 4072 transitions. [2022-11-20 12:34:28,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:34:28,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-11-20 12:34:28,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:34:28,281 INFO L225 Difference]: With dead ends: 2604 [2022-11-20 12:34:28,282 INFO L226 Difference]: Without dead ends: 2232 [2022-11-20 12:34:28,283 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 [2022-11-20 12:34:28,284 INFO L413 NwaCegarLoop]: 1557 mSDtfsCounter, 1480 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1627 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:34:28,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1627 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:34:28,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2232 states. [2022-11-20 12:34:28,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2232 to 2230. [2022-11-20 12:34:28,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2230 states, 2228 states have (on average 1.573608617594255) internal successors, (3506), 2229 states have internal predecessors, (3506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:28,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2230 states to 2230 states and 3506 transitions. [2022-11-20 12:34:28,451 INFO L78 Accepts]: Start accepts. Automaton has 2230 states and 3506 transitions. Word has length 48 [2022-11-20 12:34:28,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:34:28,451 INFO L495 AbstractCegarLoop]: Abstraction has 2230 states and 3506 transitions. [2022-11-20 12:34:28,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:28,452 INFO L276 IsEmpty]: Start isEmpty. Operand 2230 states and 3506 transitions. [2022-11-20 12:34:28,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-20 12:34:28,452 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:34:28,453 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:34:28,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 12:34:28,453 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:34:28,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:28,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1517819233, now seen corresponding path program 1 times [2022-11-20 12:34:28,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:28,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077000940] [2022-11-20 12:34:28,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:28,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:28,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:28,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:28,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:28,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077000940] [2022-11-20 12:34:28,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077000940] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:28,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:28,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:34:28,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153154851] [2022-11-20 12:34:28,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:28,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:34:28,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:28,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:34:28,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:34:28,512 INFO L87 Difference]: Start difference. First operand 2230 states and 3506 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:28,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:34:28,777 INFO L93 Difference]: Finished difference Result 3522 states and 5356 transitions. [2022-11-20 12:34:28,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:34:28,778 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-11-20 12:34:28,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:34:28,788 INFO L225 Difference]: With dead ends: 3522 [2022-11-20 12:34:28,788 INFO L226 Difference]: Without dead ends: 2828 [2022-11-20 12:34:28,790 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 [2022-11-20 12:34:28,791 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 1484 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:34:28,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 1631 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:34:28,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2828 states. [2022-11-20 12:34:29,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2828 to 2826. [2022-11-20 12:34:29,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2826 states, 2824 states have (on average 1.5304532577903682) internal successors, (4322), 2825 states have internal predecessors, (4322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:29,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2826 states to 2826 states and 4322 transitions. [2022-11-20 12:34:29,077 INFO L78 Accepts]: Start accepts. Automaton has 2826 states and 4322 transitions. Word has length 48 [2022-11-20 12:34:29,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:34:29,078 INFO L495 AbstractCegarLoop]: Abstraction has 2826 states and 4322 transitions. [2022-11-20 12:34:29,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:29,078 INFO L276 IsEmpty]: Start isEmpty. Operand 2826 states and 4322 transitions. [2022-11-20 12:34:29,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-20 12:34:29,079 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:34:29,080 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:34:29,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 12:34:29,080 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:34:29,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:29,081 INFO L85 PathProgramCache]: Analyzing trace with hash 879514788, now seen corresponding path program 1 times [2022-11-20 12:34:29,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:29,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820842281] [2022-11-20 12:34:29,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:29,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:29,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:29,215 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:34:29,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:29,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820842281] [2022-11-20 12:34:29,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820842281] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:29,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:29,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:34:29,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795917192] [2022-11-20 12:34:29,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:29,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:34:29,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:29,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:34:29,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:34:29,218 INFO L87 Difference]: Start difference. First operand 2826 states and 4322 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:30,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:34:30,141 INFO L93 Difference]: Finished difference Result 7916 states and 11511 transitions. [2022-11-20 12:34:30,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:34:30,142 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-20 12:34:30,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:34:30,166 INFO L225 Difference]: With dead ends: 7916 [2022-11-20 12:34:30,166 INFO L226 Difference]: Without dead ends: 6986 [2022-11-20 12:34:30,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:34:30,170 INFO L413 NwaCegarLoop]: 1574 mSDtfsCounter, 4648 mSDsluCounter, 1731 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4648 SdHoareTripleChecker+Valid, 3305 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:34:30,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4648 Valid, 3305 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:34:30,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6986 states. [2022-11-20 12:34:30,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6986 to 3938. [2022-11-20 12:34:30,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3938 states, 3936 states have (on average 1.4923780487804879) internal successors, (5874), 3937 states have internal predecessors, (5874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:30,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3938 states to 3938 states and 5874 transitions. [2022-11-20 12:34:30,633 INFO L78 Accepts]: Start accepts. Automaton has 3938 states and 5874 transitions. Word has length 65 [2022-11-20 12:34:30,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:34:30,633 INFO L495 AbstractCegarLoop]: Abstraction has 3938 states and 5874 transitions. [2022-11-20 12:34:30,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:30,634 INFO L276 IsEmpty]: Start isEmpty. Operand 3938 states and 5874 transitions. [2022-11-20 12:34:30,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-20 12:34:30,636 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:34:30,636 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:34:30,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 12:34:30,636 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:34:30,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:30,637 INFO L85 PathProgramCache]: Analyzing trace with hash -97691996, now seen corresponding path program 1 times [2022-11-20 12:34:30,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:30,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124060580] [2022-11-20 12:34:30,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:30,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:30,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:30,791 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 12:34:30,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:30,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124060580] [2022-11-20 12:34:30,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124060580] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:30,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:30,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:34:30,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165317999] [2022-11-20 12:34:30,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:30,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:34:30,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:30,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:34:30,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:34:30,794 INFO L87 Difference]: Start difference. First operand 3938 states and 5874 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:31,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:34:31,802 INFO L93 Difference]: Finished difference Result 9204 states and 13319 transitions. [2022-11-20 12:34:31,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:34:31,803 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-20 12:34:31,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:34:31,842 INFO L225 Difference]: With dead ends: 9204 [2022-11-20 12:34:31,842 INFO L226 Difference]: Without dead ends: 7914 [2022-11-20 12:34:31,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:34:31,848 INFO L413 NwaCegarLoop]: 1574 mSDtfsCounter, 4684 mSDsluCounter, 1749 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4684 SdHoareTripleChecker+Valid, 3323 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:34:31,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4684 Valid, 3323 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:34:31,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7914 states. [2022-11-20 12:34:32,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7914 to 5690. [2022-11-20 12:34:32,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5690 states, 5688 states have (on average 1.461673699015471) internal successors, (8314), 5689 states have internal predecessors, (8314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:32,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5690 states to 5690 states and 8314 transitions. [2022-11-20 12:34:32,589 INFO L78 Accepts]: Start accepts. Automaton has 5690 states and 8314 transitions. Word has length 65 [2022-11-20 12:34:32,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:34:32,590 INFO L495 AbstractCegarLoop]: Abstraction has 5690 states and 8314 transitions. [2022-11-20 12:34:32,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:32,590 INFO L276 IsEmpty]: Start isEmpty. Operand 5690 states and 8314 transitions. [2022-11-20 12:34:32,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-20 12:34:32,592 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:34:32,592 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:34:32,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 12:34:32,593 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:34:32,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:32,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1683240868, now seen corresponding path program 1 times [2022-11-20 12:34:32,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:32,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471119643] [2022-11-20 12:34:32,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:32,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:32,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:32,762 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 12:34:32,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:32,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471119643] [2022-11-20 12:34:32,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471119643] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:32,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:32,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:34:32,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770005064] [2022-11-20 12:34:32,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:32,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:34:32,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:32,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:34:32,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:34:32,766 INFO L87 Difference]: Start difference. First operand 5690 states and 8314 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:33,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:34:33,997 INFO L93 Difference]: Finished difference Result 10492 states and 15119 transitions. [2022-11-20 12:34:33,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:34:33,998 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-20 12:34:33,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:34:34,019 INFO L225 Difference]: With dead ends: 10492 [2022-11-20 12:34:34,019 INFO L226 Difference]: Without dead ends: 9202 [2022-11-20 12:34:34,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:34:34,025 INFO L413 NwaCegarLoop]: 1574 mSDtfsCounter, 4680 mSDsluCounter, 1755 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4680 SdHoareTripleChecker+Valid, 3329 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:34:34,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4680 Valid, 3329 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:34:34,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9202 states. [2022-11-20 12:34:34,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9202 to 6978. [2022-11-20 12:34:34,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6978 states, 6976 states have (on average 1.4498279816513762) internal successors, (10114), 6977 states have internal predecessors, (10114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:34,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6978 states to 6978 states and 10114 transitions. [2022-11-20 12:34:34,917 INFO L78 Accepts]: Start accepts. Automaton has 6978 states and 10114 transitions. Word has length 65 [2022-11-20 12:34:34,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:34:34,917 INFO L495 AbstractCegarLoop]: Abstraction has 6978 states and 10114 transitions. [2022-11-20 12:34:34,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:34,918 INFO L276 IsEmpty]: Start isEmpty. Operand 6978 states and 10114 transitions. [2022-11-20 12:34:34,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-20 12:34:34,926 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:34:34,927 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:34:34,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 12:34:34,927 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:34:34,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:34,928 INFO L85 PathProgramCache]: Analyzing trace with hash 2117776804, now seen corresponding path program 1 times [2022-11-20 12:34:34,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:34,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374700420] [2022-11-20 12:34:34,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:34,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:34,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:35,098 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 12:34:35,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:35,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374700420] [2022-11-20 12:34:35,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374700420] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:35,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:35,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 12:34:35,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180069871] [2022-11-20 12:34:35,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:35,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:34:35,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:35,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:34:35,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:34:35,101 INFO L87 Difference]: Start difference. First operand 6978 states and 10114 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:36,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:34:36,118 INFO L93 Difference]: Finished difference Result 11780 states and 16919 transitions. [2022-11-20 12:34:36,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:34:36,119 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-20 12:34:36,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:34:36,143 INFO L225 Difference]: With dead ends: 11780 [2022-11-20 12:34:36,143 INFO L226 Difference]: Without dead ends: 10490 [2022-11-20 12:34:36,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:34:36,150 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 4648 mSDsluCounter, 1802 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4648 SdHoareTripleChecker+Valid, 3375 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:34:36,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4648 Valid, 3375 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:34:36,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10490 states. [2022-11-20 12:34:37,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10490 to 8266. [2022-11-20 12:34:37,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8266 states, 8264 states have (on average 1.441674733785092) internal successors, (11914), 8265 states have internal predecessors, (11914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:37,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8266 states to 8266 states and 11914 transitions. [2022-11-20 12:34:37,095 INFO L78 Accepts]: Start accepts. Automaton has 8266 states and 11914 transitions. Word has length 65 [2022-11-20 12:34:37,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:34:37,095 INFO L495 AbstractCegarLoop]: Abstraction has 8266 states and 11914 transitions. [2022-11-20 12:34:37,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:37,096 INFO L276 IsEmpty]: Start isEmpty. Operand 8266 states and 11914 transitions. [2022-11-20 12:34:37,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-20 12:34:37,098 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:34:37,098 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:34:37,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 12:34:37,098 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:34:37,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:37,099 INFO L85 PathProgramCache]: Analyzing trace with hash -999421060, now seen corresponding path program 1 times [2022-11-20 12:34:37,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:37,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241518631] [2022-11-20 12:34:37,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:37,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:37,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:37,197 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:37,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:37,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241518631] [2022-11-20 12:34:37,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241518631] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:37,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:37,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:34:37,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319481776] [2022-11-20 12:34:37,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:37,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:34:37,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:37,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:34:37,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:34:37,200 INFO L87 Difference]: Start difference. First operand 8266 states and 11914 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:38,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:34:38,046 INFO L93 Difference]: Finished difference Result 14998 states and 21332 transitions. [2022-11-20 12:34:38,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:34:38,047 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-20 12:34:38,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:34:38,066 INFO L225 Difference]: With dead ends: 14998 [2022-11-20 12:34:38,066 INFO L226 Difference]: Without dead ends: 8268 [2022-11-20 12:34:38,076 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 [2022-11-20 12:34:38,077 INFO L413 NwaCegarLoop]: 1551 mSDtfsCounter, 37 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3064 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:34:38,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 3064 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:34:38,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8268 states. [2022-11-20 12:34:39,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8268 to 8266. [2022-11-20 12:34:39,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8266 states, 8264 states have (on average 1.4266698935140367) internal successors, (11790), 8265 states have internal predecessors, (11790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:39,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8266 states to 8266 states and 11790 transitions. [2022-11-20 12:34:39,129 INFO L78 Accepts]: Start accepts. Automaton has 8266 states and 11790 transitions. Word has length 66 [2022-11-20 12:34:39,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:34:39,130 INFO L495 AbstractCegarLoop]: Abstraction has 8266 states and 11790 transitions. [2022-11-20 12:34:39,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:39,130 INFO L276 IsEmpty]: Start isEmpty. Operand 8266 states and 11790 transitions. [2022-11-20 12:34:39,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-20 12:34:39,132 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:34:39,132 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:34:39,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 12:34:39,133 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:34:39,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:39,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1980195300, now seen corresponding path program 1 times [2022-11-20 12:34:39,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:39,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521823797] [2022-11-20 12:34:39,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:39,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:39,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:39,233 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:39,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:39,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521823797] [2022-11-20 12:34:39,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521823797] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:39,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:39,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:34:39,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545786299] [2022-11-20 12:34:39,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:39,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:34:39,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:39,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:34:39,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:34:39,236 INFO L87 Difference]: Start difference. First operand 8266 states and 11790 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) [2022-11-20 12:34:39,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:34:39,601 INFO L93 Difference]: Finished difference Result 10839 states and 15374 transitions. [2022-11-20 12:34:39,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:34:39,605 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 [2022-11-20 12:34:39,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:34:39,612 INFO L225 Difference]: With dead ends: 10839 [2022-11-20 12:34:39,612 INFO L226 Difference]: Without dead ends: 4109 [2022-11-20 12:34:39,619 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 [2022-11-20 12:34:39,619 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 31 mSDsluCounter, 1512 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3061 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:34:39,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3061 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:34:39,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4109 states. [2022-11-20 12:34:40,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4109 to 4101. [2022-11-20 12:34:40,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4101 states, 4099 states have (on average 1.4708465479385215) internal successors, (6029), 4100 states have internal predecessors, (6029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:40,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4101 states to 4101 states and 6029 transitions. [2022-11-20 12:34:40,122 INFO L78 Accepts]: Start accepts. Automaton has 4101 states and 6029 transitions. Word has length 67 [2022-11-20 12:34:40,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:34:40,123 INFO L495 AbstractCegarLoop]: Abstraction has 4101 states and 6029 transitions. [2022-11-20 12:34:40,123 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) [2022-11-20 12:34:40,123 INFO L276 IsEmpty]: Start isEmpty. Operand 4101 states and 6029 transitions. [2022-11-20 12:34:40,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-20 12:34:40,125 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:34:40,125 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:34:40,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 12:34:40,126 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:34:40,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:40,127 INFO L85 PathProgramCache]: Analyzing trace with hash 823701102, now seen corresponding path program 1 times [2022-11-20 12:34:40,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:40,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173343352] [2022-11-20 12:34:40,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:40,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:40,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:40,253 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:40,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:40,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173343352] [2022-11-20 12:34:40,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173343352] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:40,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:40,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:34:40,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498427384] [2022-11-20 12:34:40,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:40,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:34:40,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:40,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:34:40,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:34:40,256 INFO L87 Difference]: Start difference. First operand 4101 states and 6029 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:40,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:34:40,467 INFO L93 Difference]: Finished difference Result 5381 states and 7791 transitions. [2022-11-20 12:34:40,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:34:40,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-11-20 12:34:40,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:34:40,472 INFO L225 Difference]: With dead ends: 5381 [2022-11-20 12:34:40,473 INFO L226 Difference]: Without dead ends: 2827 [2022-11-20 12:34:40,476 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 [2022-11-20 12:34:40,477 INFO L413 NwaCegarLoop]: 1543 mSDtfsCounter, 33 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3040 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:34:40,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 3040 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:34:40,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2827 states. [2022-11-20 12:34:40,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2827 to 2825. [2022-11-20 12:34:40,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2825 states, 2823 states have (on average 1.5044279135671272) internal successors, (4247), 2824 states have internal predecessors, (4247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:40,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2825 states to 2825 states and 4247 transitions. [2022-11-20 12:34:40,694 INFO L78 Accepts]: Start accepts. Automaton has 2825 states and 4247 transitions. Word has length 68 [2022-11-20 12:34:40,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:34:40,694 INFO L495 AbstractCegarLoop]: Abstraction has 2825 states and 4247 transitions. [2022-11-20 12:34:40,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:40,694 INFO L276 IsEmpty]: Start isEmpty. Operand 2825 states and 4247 transitions. [2022-11-20 12:34:40,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-20 12:34:40,696 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:34:40,696 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:34:40,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 12:34:40,696 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:34:40,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:40,697 INFO L85 PathProgramCache]: Analyzing trace with hash -447735840, now seen corresponding path program 1 times [2022-11-20 12:34:40,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:40,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619919262] [2022-11-20 12:34:40,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:40,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:40,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:40,795 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:40,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:40,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619919262] [2022-11-20 12:34:40,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619919262] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:40,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:40,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:34:40,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578848847] [2022-11-20 12:34:40,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:40,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:34:40,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:40,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:34:40,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:34:40,799 INFO L87 Difference]: Start difference. First operand 2825 states and 4247 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:40,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:34:40,937 INFO L93 Difference]: Finished difference Result 3467 states and 5118 transitions. [2022-11-20 12:34:40,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:34:40,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-11-20 12:34:40,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:34:40,943 INFO L225 Difference]: With dead ends: 3467 [2022-11-20 12:34:40,943 INFO L226 Difference]: Without dead ends: 2189 [2022-11-20 12:34:40,945 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 [2022-11-20 12:34:40,946 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 30 mSDsluCounter, 1489 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 3025 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:34:40,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 3025 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:34:40,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2189 states. [2022-11-20 12:34:41,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2189 to 2187. [2022-11-20 12:34:41,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2187 states, 2185 states have (on average 1.5409610983981694) internal successors, (3367), 2186 states have internal predecessors, (3367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:41,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2187 states to 2187 states and 3367 transitions. [2022-11-20 12:34:41,082 INFO L78 Accepts]: Start accepts. Automaton has 2187 states and 3367 transitions. Word has length 70 [2022-11-20 12:34:41,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:34:41,082 INFO L495 AbstractCegarLoop]: Abstraction has 2187 states and 3367 transitions. [2022-11-20 12:34:41,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:41,083 INFO L276 IsEmpty]: Start isEmpty. Operand 2187 states and 3367 transitions. [2022-11-20 12:34:41,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-20 12:34:41,084 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:34:41,084 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:34:41,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 12:34:41,085 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:34:41,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:41,087 INFO L85 PathProgramCache]: Analyzing trace with hash -164665390, now seen corresponding path program 1 times [2022-11-20 12:34:41,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:41,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552617525] [2022-11-20 12:34:41,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:41,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:41,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:41,273 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:34:41,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:41,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552617525] [2022-11-20 12:34:41,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552617525] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:34:41,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336817604] [2022-11-20 12:34:41,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:41,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:34:41,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:34:41,282 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:34:41,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:34:41,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:41,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 12:34:41,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:34:41,631 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:34:41,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:34:42,026 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:34:42,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336817604] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:34:42,026 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:34:42,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2022-11-20 12:34:42,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922033098] [2022-11-20 12:34:42,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:34:42,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 12:34:42,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:42,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 12:34:42,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:34:42,029 INFO L87 Difference]: Start difference. First operand 2187 states and 3367 transitions. Second operand has 9 states, 9 states have (on average 19.77777777777778) internal successors, (178), 9 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:42,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:34:42,509 INFO L93 Difference]: Finished difference Result 3702 states and 5364 transitions. [2022-11-20 12:34:42,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:34:42,510 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 19.77777777777778) internal successors, (178), 9 states have internal predecessors, (178), 0 states have call successors, (0), 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 [2022-11-20 12:34:42,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:34:42,515 INFO L225 Difference]: With dead ends: 3702 [2022-11-20 12:34:42,515 INFO L226 Difference]: Without dead ends: 3062 [2022-11-20 12:34:42,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=58, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:34:42,518 INFO L413 NwaCegarLoop]: 1521 mSDtfsCounter, 3102 mSDsluCounter, 3238 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3102 SdHoareTripleChecker+Valid, 4759 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:34:42,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3102 Valid, 4759 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:34:42,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3062 states. [2022-11-20 12:34:42,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3062 to 2995. [2022-11-20 12:34:42,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2995 states, 2993 states have (on average 1.4607417307049784) internal successors, (4372), 2994 states have internal predecessors, (4372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:42,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2995 states to 2995 states and 4372 transitions. [2022-11-20 12:34:42,825 INFO L78 Accepts]: Start accepts. Automaton has 2995 states and 4372 transitions. Word has length 72 [2022-11-20 12:34:42,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:34:42,825 INFO L495 AbstractCegarLoop]: Abstraction has 2995 states and 4372 transitions. [2022-11-20 12:34:42,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.77777777777778) internal successors, (178), 9 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:42,825 INFO L276 IsEmpty]: Start isEmpty. Operand 2995 states and 4372 transitions. [2022-11-20 12:34:42,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-20 12:34:42,826 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:34:42,827 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:34:42,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:34:43,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:34:43,034 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:34:43,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:43,035 INFO L85 PathProgramCache]: Analyzing trace with hash -790906490, now seen corresponding path program 1 times [2022-11-20 12:34:43,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:43,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112664238] [2022-11-20 12:34:43,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:43,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:43,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:43,637 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:43,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:43,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112664238] [2022-11-20 12:34:43,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112664238] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:34:43,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956744210] [2022-11-20 12:34:43,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:43,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:34:43,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:34:43,639 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:34:43,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:34:43,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:43,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 12:34:43,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:34:44,522 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:44,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:34:45,713 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:45,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956744210] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:34:45,713 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:34:45,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-11-20 12:34:45,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57770165] [2022-11-20 12:34:45,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:34:45,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 12:34:45,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:45,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 12:34:45,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2022-11-20 12:34:45,716 INFO L87 Difference]: Start difference. First operand 2995 states and 4372 transitions. Second operand has 21 states, 21 states have (on average 7.190476190476191) internal successors, (151), 20 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:47,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:34:47,799 INFO L93 Difference]: Finished difference Result 6525 states and 8922 transitions. [2022-11-20 12:34:47,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 12:34:47,800 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 7.190476190476191) internal successors, (151), 20 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-11-20 12:34:47,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:34:47,810 INFO L225 Difference]: With dead ends: 6525 [2022-11-20 12:34:47,810 INFO L226 Difference]: Without dead ends: 5167 [2022-11-20 12:34:47,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 132 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=215, Invalid=597, Unknown=0, NotChecked=0, Total=812 [2022-11-20 12:34:47,815 INFO L413 NwaCegarLoop]: 1511 mSDtfsCounter, 13612 mSDsluCounter, 3391 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13612 SdHoareTripleChecker+Valid, 4902 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:34:47,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13612 Valid, 4902 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 12:34:47,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5167 states. [2022-11-20 12:34:48,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5167 to 4273. [2022-11-20 12:34:48,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4273 states, 4271 states have (on average 1.400140482322641) internal successors, (5980), 4272 states have internal predecessors, (5980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:48,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4273 states to 4273 states and 5980 transitions. [2022-11-20 12:34:48,679 INFO L78 Accepts]: Start accepts. Automaton has 4273 states and 5980 transitions. Word has length 73 [2022-11-20 12:34:48,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:34:48,679 INFO L495 AbstractCegarLoop]: Abstraction has 4273 states and 5980 transitions. [2022-11-20 12:34:48,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.190476190476191) internal successors, (151), 20 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:48,679 INFO L276 IsEmpty]: Start isEmpty. Operand 4273 states and 5980 transitions. [2022-11-20 12:34:48,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-20 12:34:48,680 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:34:48,681 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:34:48,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:34:48,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-20 12:34:48,887 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:34:48,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:48,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1677867256, now seen corresponding path program 1 times [2022-11-20 12:34:48,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:48,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536520285] [2022-11-20 12:34:48,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:48,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:48,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:49,322 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:49,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:49,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536520285] [2022-11-20 12:34:49,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536520285] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:34:49,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758567032] [2022-11-20 12:34:49,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:49,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:34:49,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:34:49,324 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:34:49,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:34:49,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:49,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 12:34:49,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:34:50,530 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:50,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:34:51,884 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:51,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758567032] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:34:51,884 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:34:51,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2022-11-20 12:34:51,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417180103] [2022-11-20 12:34:51,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:34:51,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-20 12:34:51,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:51,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-20 12:34:51,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=619, Unknown=0, NotChecked=0, Total=756 [2022-11-20 12:34:51,887 INFO L87 Difference]: Start difference. First operand 4273 states and 5980 transitions. Second operand has 28 states, 28 states have (on average 6.821428571428571) internal successors, (191), 28 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:54,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:34:54,681 INFO L93 Difference]: Finished difference Result 11729 states and 15373 transitions. [2022-11-20 12:34:54,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-20 12:34:54,684 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.821428571428571) internal successors, (191), 28 states have internal predecessors, (191), 0 states have call successors, (0), 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 73 [2022-11-20 12:34:54,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:34:54,695 INFO L225 Difference]: With dead ends: 11729 [2022-11-20 12:34:54,696 INFO L226 Difference]: Without dead ends: 9216 [2022-11-20 12:34:54,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=514, Invalid=1648, Unknown=0, NotChecked=0, Total=2162 [2022-11-20 12:34:54,701 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 18607 mSDsluCounter, 6448 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18607 SdHoareTripleChecker+Valid, 7964 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:34:54,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18607 Valid, 7964 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 12:34:54,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9216 states. [2022-11-20 12:34:55,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9216 to 6980. [2022-11-20 12:34:55,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6980 states, 6978 states have (on average 1.3380624820865576) internal successors, (9337), 6979 states have internal predecessors, (9337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:55,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6980 states to 6980 states and 9337 transitions. [2022-11-20 12:34:55,809 INFO L78 Accepts]: Start accepts. Automaton has 6980 states and 9337 transitions. Word has length 73 [2022-11-20 12:34:55,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:34:55,810 INFO L495 AbstractCegarLoop]: Abstraction has 6980 states and 9337 transitions. [2022-11-20 12:34:55,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.821428571428571) internal successors, (191), 28 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:55,810 INFO L276 IsEmpty]: Start isEmpty. Operand 6980 states and 9337 transitions. [2022-11-20 12:34:55,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-20 12:34:55,812 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:34:55,812 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:34:55,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:34:56,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-20 12:34:56,021 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:34:56,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:56,023 INFO L85 PathProgramCache]: Analyzing trace with hash -2137928712, now seen corresponding path program 1 times [2022-11-20 12:34:56,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:56,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590684440] [2022-11-20 12:34:56,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:56,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:56,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:57,761 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:57,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:57,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590684440] [2022-11-20 12:34:57,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590684440] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:34:57,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803361145] [2022-11-20 12:34:57,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:57,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:34:57,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:34:57,764 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:34:57,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 12:34:57,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:57,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 12:34:57,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:34:58,806 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:58,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:35:00,271 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:35:00,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803361145] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:35:00,272 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:35:00,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2022-11-20 12:35:00,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215987242] [2022-11-20 12:35:00,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:35:00,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-20 12:35:00,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:35:00,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-20 12:35:00,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=808, Unknown=0, NotChecked=0, Total=992 [2022-11-20 12:35:00,274 INFO L87 Difference]: Start difference. First operand 6980 states and 9337 transitions. Second operand has 32 states, 32 states have (on average 6.28125) internal successors, (201), 32 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:05,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:35:05,131 INFO L93 Difference]: Finished difference Result 20895 states and 26402 transitions. [2022-11-20 12:35:05,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-20 12:35:05,132 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 6.28125) internal successors, (201), 32 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-11-20 12:35:05,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:35:05,158 INFO L225 Difference]: With dead ends: 20895 [2022-11-20 12:35:05,158 INFO L226 Difference]: Without dead ends: 16590 [2022-11-20 12:35:05,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 601 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=663, Invalid=2093, Unknown=0, NotChecked=0, Total=2756 [2022-11-20 12:35:05,167 INFO L413 NwaCegarLoop]: 1512 mSDtfsCounter, 12731 mSDsluCounter, 6411 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12731 SdHoareTripleChecker+Valid, 7923 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:35:05,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12731 Valid, 7923 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 12:35:05,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16590 states. [2022-11-20 12:35:07,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16590 to 12243. [2022-11-20 12:35:07,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12243 states, 12241 states have (on average 1.2879666693897558) internal successors, (15766), 12242 states have internal predecessors, (15766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:07,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12243 states to 12243 states and 15766 transitions. [2022-11-20 12:35:07,366 INFO L78 Accepts]: Start accepts. Automaton has 12243 states and 15766 transitions. Word has length 73 [2022-11-20 12:35:07,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:35:07,366 INFO L495 AbstractCegarLoop]: Abstraction has 12243 states and 15766 transitions. [2022-11-20 12:35:07,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 6.28125) internal successors, (201), 32 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:07,366 INFO L276 IsEmpty]: Start isEmpty. Operand 12243 states and 15766 transitions. [2022-11-20 12:35:07,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-20 12:35:07,368 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:35:07,368 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:07,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:35:07,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:35:07,574 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:35:07,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:07,575 INFO L85 PathProgramCache]: Analyzing trace with hash -416241244, now seen corresponding path program 1 times [2022-11-20 12:35:07,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:35:07,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607547600] [2022-11-20 12:35:07,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:07,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:35:07,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:08,121 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:35:08,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:35:08,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607547600] [2022-11-20 12:35:08,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607547600] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:35:08,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042299184] [2022-11-20 12:35:08,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:08,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:35:08,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:35:08,125 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:35:08,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 12:35:08,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:08,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 12:35:08,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:35:09,151 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:35:09,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:35:09,908 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:35:09,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042299184] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:35:09,909 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:35:09,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-11-20 12:35:09,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649946645] [2022-11-20 12:35:09,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:35:09,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 12:35:09,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:35:09,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 12:35:09,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-11-20 12:35:09,912 INFO L87 Difference]: Start difference. First operand 12243 states and 15766 transitions. Second operand has 21 states, 21 states have (on average 7.476190476190476) internal successors, (157), 20 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:18,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:35:18,500 INFO L93 Difference]: Finished difference Result 41566 states and 52424 transitions. [2022-11-20 12:35:18,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 12:35:18,500 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 7.476190476190476) internal successors, (157), 20 states have internal predecessors, (157), 0 states have call successors, (0), 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 [2022-11-20 12:35:18,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:35:18,539 INFO L225 Difference]: With dead ends: 41566 [2022-11-20 12:35:18,539 INFO L226 Difference]: Without dead ends: 32405 [2022-11-20 12:35:18,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 134 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=249, Invalid=743, Unknown=0, NotChecked=0, Total=992 [2022-11-20 12:35:18,550 INFO L413 NwaCegarLoop]: 1534 mSDtfsCounter, 18668 mSDsluCounter, 4777 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18668 SdHoareTripleChecker+Valid, 6311 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:35:18,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18668 Valid, 6311 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 12:35:18,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32405 states. [2022-11-20 12:35:23,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32405 to 22797. [2022-11-20 12:35:23,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22797 states, 22795 states have (on average 1.2542224171967538) internal successors, (28590), 22796 states have internal predecessors, (28590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:23,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22797 states to 22797 states and 28590 transitions. [2022-11-20 12:35:23,801 INFO L78 Accepts]: Start accepts. Automaton has 22797 states and 28590 transitions. Word has length 74 [2022-11-20 12:35:23,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:35:23,801 INFO L495 AbstractCegarLoop]: Abstraction has 22797 states and 28590 transitions. [2022-11-20 12:35:23,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.476190476190476) internal successors, (157), 20 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:23,802 INFO L276 IsEmpty]: Start isEmpty. Operand 22797 states and 28590 transitions. [2022-11-20 12:35:23,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-20 12:35:23,804 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:35:23,805 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:23,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 12:35:24,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-20 12:35:24,011 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:35:24,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:24,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1997806360, now seen corresponding path program 1 times [2022-11-20 12:35:24,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:35:24,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351584534] [2022-11-20 12:35:24,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:24,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:35:24,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:24,960 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:35:24,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:35:24,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351584534] [2022-11-20 12:35:24,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351584534] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:35:24,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205455958] [2022-11-20 12:35:24,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:24,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:35:24,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:35:24,962 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:35:24,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 12:35:25,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:25,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-20 12:35:25,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:35:27,033 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:35:27,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:35:29,162 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:35:29,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205455958] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:35:29,163 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:35:29,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15, 14] total 37 [2022-11-20 12:35:29,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353574194] [2022-11-20 12:35:29,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:35:29,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-20 12:35:29,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:35:29,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-20 12:35:29,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1187, Unknown=0, NotChecked=0, Total=1332 [2022-11-20 12:35:29,167 INFO L87 Difference]: Start difference. First operand 22797 states and 28590 transitions. Second operand has 37 states, 37 states have (on average 5.486486486486487) internal successors, (203), 37 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:36:32,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:36:32,994 INFO L93 Difference]: Finished difference Result 73588 states and 90018 transitions. [2022-11-20 12:36:32,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2022-11-20 12:36:32,994 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.486486486486487) internal successors, (203), 37 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-11-20 12:36:32,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:36:33,083 INFO L225 Difference]: With dead ends: 73588 [2022-11-20 12:36:33,084 INFO L226 Difference]: Without dead ends: 64390 [2022-11-20 12:36:33,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24071 ImplicationChecksByTransitivity, 36.0s TimeCoverageRelationStatistics Valid=8666, Invalid=49656, Unknown=0, NotChecked=0, Total=58322 [2022-11-20 12:36:33,108 INFO L413 NwaCegarLoop]: 1738 mSDtfsCounter, 18196 mSDsluCounter, 27330 mSDsCounter, 0 mSdLazyCounter, 2930 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18196 SdHoareTripleChecker+Valid, 29068 SdHoareTripleChecker+Invalid, 3127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 2930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:36:33,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18196 Valid, 29068 Invalid, 3127 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [197 Valid, 2930 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-20 12:36:33,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64390 states. [2022-11-20 12:36:41,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64390 to 20382. [2022-11-20 12:36:41,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20382 states, 20380 states have (on average 1.2564278704612366) internal successors, (25606), 20381 states have internal predecessors, (25606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:36:41,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20382 states to 20382 states and 25606 transitions. [2022-11-20 12:36:41,579 INFO L78 Accepts]: Start accepts. Automaton has 20382 states and 25606 transitions. Word has length 75 [2022-11-20 12:36:41,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:36:41,580 INFO L495 AbstractCegarLoop]: Abstraction has 20382 states and 25606 transitions. [2022-11-20 12:36:41,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 5.486486486486487) internal successors, (203), 37 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:36:41,580 INFO L276 IsEmpty]: Start isEmpty. Operand 20382 states and 25606 transitions. [2022-11-20 12:36:41,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-20 12:36:41,582 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:36:41,583 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:36:41,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 12:36:41,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:36:41,789 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:36:41,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:36:41,790 INFO L85 PathProgramCache]: Analyzing trace with hash 19060712, now seen corresponding path program 1 times [2022-11-20 12:36:41,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:36:41,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060064668] [2022-11-20 12:36:41,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:36:41,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:36:41,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:42,833 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:36:42,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:36:42,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060064668] [2022-11-20 12:36:42,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060064668] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:36:42,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667486556] [2022-11-20 12:36:42,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:36:42,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:36:42,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:36:42,835 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:36:42,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 12:36:42,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:42,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-20 12:36:42,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:36:46,370 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:36:46,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:36:52,757 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:36:52,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667486556] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:36:52,758 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:36:52,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 21, 19] total 49 [2022-11-20 12:36:52,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601302001] [2022-11-20 12:36:52,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:36:52,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-20 12:36:52,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:36:52,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-20 12:36:52,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=2045, Unknown=0, NotChecked=0, Total=2352 [2022-11-20 12:36:52,763 INFO L87 Difference]: Start difference. First operand 20382 states and 25606 transitions. Second operand has 49 states, 49 states have (on average 4.061224489795919) internal successors, (199), 49 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:38,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:39:38,834 INFO L93 Difference]: Finished difference Result 86778 states and 106066 transitions. [2022-11-20 12:39:38,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 262 states. [2022-11-20 12:39:38,834 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 4.061224489795919) internal successors, (199), 49 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-11-20 12:39:38,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:39:38,931 INFO L225 Difference]: With dead ends: 86778 [2022-11-20 12:39:38,931 INFO L226 Difference]: Without dead ends: 77058 [2022-11-20 12:39:38,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 111 SyntacticMatches, 3 SemanticMatches, 307 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42270 ImplicationChecksByTransitivity, 125.7s TimeCoverageRelationStatistics Valid=16145, Invalid=79027, Unknown=0, NotChecked=0, Total=95172 [2022-11-20 12:39:38,959 INFO L413 NwaCegarLoop]: 1547 mSDtfsCounter, 18616 mSDsluCounter, 17953 mSDsCounter, 0 mSdLazyCounter, 4625 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18616 SdHoareTripleChecker+Valid, 19500 SdHoareTripleChecker+Invalid, 4788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 4625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:39:38,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18616 Valid, 19500 Invalid, 4788 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [163 Valid, 4625 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2022-11-20 12:39:39,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77058 states. [2022-11-20 12:39:47,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77058 to 21055. [2022-11-20 12:39:47,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21055 states, 21053 states have (on average 1.255308032109438) internal successors, (26428), 21054 states have internal predecessors, (26428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:47,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21055 states to 21055 states and 26428 transitions. [2022-11-20 12:39:47,312 INFO L78 Accepts]: Start accepts. Automaton has 21055 states and 26428 transitions. Word has length 75 [2022-11-20 12:39:47,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:39:47,312 INFO L495 AbstractCegarLoop]: Abstraction has 21055 states and 26428 transitions. [2022-11-20 12:39:47,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 4.061224489795919) internal successors, (199), 49 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:47,312 INFO L276 IsEmpty]: Start isEmpty. Operand 21055 states and 26428 transitions. [2022-11-20 12:39:47,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-20 12:39:47,313 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:39:47,313 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:39:47,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 12:39:47,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-20 12:39:47,514 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:39:47,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:39:47,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1754579942, now seen corresponding path program 1 times [2022-11-20 12:39:47,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:39:47,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781728140] [2022-11-20 12:39:47,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:39:47,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:39:47,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:39:48,301 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:39:48,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:39:48,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781728140] [2022-11-20 12:39:48,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781728140] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:39:48,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921529489] [2022-11-20 12:39:48,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:39:48,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:39:48,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:39:48,303 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:39:48,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 12:39:48,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:39:48,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 12:39:48,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:39:49,506 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:39:49,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:39:50,620 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:39:50,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921529489] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:39:50,620 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:39:50,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 31 [2022-11-20 12:39:50,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800971506] [2022-11-20 12:39:50,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:39:50,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-20 12:39:50,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:39:50,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-20 12:39:50,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=800, Unknown=0, NotChecked=0, Total=930 [2022-11-20 12:39:50,622 INFO L87 Difference]: Start difference. First operand 21055 states and 26428 transitions. Second operand has 31 states, 31 states have (on average 6.290322580645161) internal successors, (195), 31 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:40:17,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:40:17,069 INFO L93 Difference]: Finished difference Result 49806 states and 61553 transitions. [2022-11-20 12:40:17,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-20 12:40:17,069 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 6.290322580645161) internal successors, (195), 31 states have internal predecessors, (195), 0 states have call successors, (0), 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 [2022-11-20 12:40:17,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:40:17,111 INFO L225 Difference]: With dead ends: 49806 [2022-11-20 12:40:17,111 INFO L226 Difference]: Without dead ends: 41564 [2022-11-20 12:40:17,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 135 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 683 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=666, Invalid=2414, Unknown=0, NotChecked=0, Total=3080 [2022-11-20 12:40:17,121 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 10495 mSDsluCounter, 11274 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10495 SdHoareTripleChecker+Valid, 12843 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:40:17,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10495 Valid, 12843 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 938 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 12:40:17,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41564 states. [2022-11-20 12:40:25,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41564 to 17644. [2022-11-20 12:40:25,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17644 states, 17642 states have (on average 1.2597778029701847) internal successors, (22225), 17643 states have internal predecessors, (22225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:40:25,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17644 states to 17644 states and 22225 transitions. [2022-11-20 12:40:25,526 INFO L78 Accepts]: Start accepts. Automaton has 17644 states and 22225 transitions. Word has length 77 [2022-11-20 12:40:25,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:40:25,526 INFO L495 AbstractCegarLoop]: Abstraction has 17644 states and 22225 transitions. [2022-11-20 12:40:25,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 6.290322580645161) internal successors, (195), 31 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:40:25,526 INFO L276 IsEmpty]: Start isEmpty. Operand 17644 states and 22225 transitions. [2022-11-20 12:40:25,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-20 12:40:25,527 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:40:25,527 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:40:25,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 12:40:25,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-20 12:40:25,733 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:40:25,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:40:25,734 INFO L85 PathProgramCache]: Analyzing trace with hash 823031838, now seen corresponding path program 1 times [2022-11-20 12:40:25,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:40:25,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409290496] [2022-11-20 12:40:25,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:40:25,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:40:25,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:40:26,808 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:40:26,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:40:26,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409290496] [2022-11-20 12:40:26,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409290496] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:40:26,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425110225] [2022-11-20 12:40:26,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:40:26,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:40:26,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:40:26,814 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:40:26,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 12:40:26,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:40:26,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 12:40:26,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:40:28,304 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:40:28,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:40:30,968 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:40:30,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425110225] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:40:30,968 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:40:30,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2022-11-20 12:40:30,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595035340] [2022-11-20 12:40:30,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:40:30,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-20 12:40:30,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:40:30,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-20 12:40:30,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=704, Unknown=0, NotChecked=0, Total=812 [2022-11-20 12:40:30,971 INFO L87 Difference]: Start difference. First operand 17644 states and 22225 transitions. Second operand has 29 states, 29 states have (on average 6.137931034482759) internal successors, (178), 29 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:40:46,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:40:46,905 INFO L93 Difference]: Finished difference Result 27477 states and 34574 transitions. [2022-11-20 12:40:46,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 12:40:46,905 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 6.137931034482759) internal successors, (178), 29 states have internal predecessors, (178), 0 states have call successors, (0), 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 [2022-11-20 12:40:46,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:40:46,925 INFO L225 Difference]: With dead ends: 27477 [2022-11-20 12:40:46,925 INFO L226 Difference]: Without dead ends: 19965 [2022-11-20 12:40:46,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 129 SyntacticMatches, 8 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=375, Invalid=1431, Unknown=0, NotChecked=0, Total=1806 [2022-11-20 12:40:46,930 INFO L413 NwaCegarLoop]: 1519 mSDtfsCounter, 8900 mSDsluCounter, 15054 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8900 SdHoareTripleChecker+Valid, 16573 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:40:46,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8900 Valid, 16573 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 12:40:46,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19965 states. [2022-11-20 12:40:53,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19965 to 11502. [2022-11-20 12:40:53,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11502 states, 11500 states have (on average 1.2746086956521738) internal successors, (14658), 11501 states have internal predecessors, (14658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:40:53,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11502 states to 11502 states and 14658 transitions. [2022-11-20 12:40:53,269 INFO L78 Accepts]: Start accepts. Automaton has 11502 states and 14658 transitions. Word has length 77 [2022-11-20 12:40:53,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:40:53,269 INFO L495 AbstractCegarLoop]: Abstraction has 11502 states and 14658 transitions. [2022-11-20 12:40:53,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 6.137931034482759) internal successors, (178), 29 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:40:53,269 INFO L276 IsEmpty]: Start isEmpty. Operand 11502 states and 14658 transitions. [2022-11-20 12:40:53,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-20 12:40:53,271 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:40:53,271 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:40:53,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 12:40:53,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-20 12:40:53,477 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:40:53,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:40:53,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1471207559, now seen corresponding path program 1 times [2022-11-20 12:40:53,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:40:53,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203811457] [2022-11-20 12:40:53,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:40:53,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:40:53,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:40:53,559 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 12:40:53,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:40:53,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203811457] [2022-11-20 12:40:53,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203811457] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:40:53,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:40:53,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:40:53,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120799718] [2022-11-20 12:40:53,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:40:53,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:40:53,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:40:53,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:40:53,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:40:53,561 INFO L87 Difference]: Start difference. First operand 11502 states and 14658 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:04,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:41:04,373 INFO L93 Difference]: Finished difference Result 14508 states and 19585 transitions. [2022-11-20 12:41:04,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:41:04,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 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 95 [2022-11-20 12:41:04,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:41:04,386 INFO L225 Difference]: With dead ends: 14508 [2022-11-20 12:41:04,386 INFO L226 Difference]: Without dead ends: 13004 [2022-11-20 12:41:04,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:41:04,390 INFO L413 NwaCegarLoop]: 554 mSDtfsCounter, 811 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:41:04,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [811 Valid, 561 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-20 12:41:04,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13004 states. [2022-11-20 12:41:10,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13004 to 13004. [2022-11-20 12:41:10,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13004 states, 13002 states have (on average 1.2673434856175974) internal successors, (16478), 13003 states have internal predecessors, (16478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:10,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13004 states to 13004 states and 16478 transitions. [2022-11-20 12:41:10,885 INFO L78 Accepts]: Start accepts. Automaton has 13004 states and 16478 transitions. Word has length 95 [2022-11-20 12:41:10,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:41:10,885 INFO L495 AbstractCegarLoop]: Abstraction has 13004 states and 16478 transitions. [2022-11-20 12:41:10,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:10,885 INFO L276 IsEmpty]: Start isEmpty. Operand 13004 states and 16478 transitions. [2022-11-20 12:41:10,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-20 12:41:10,887 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:41:10,888 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:41:10,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-20 12:41:10,888 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:41:10,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:41:10,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1090222909, now seen corresponding path program 1 times [2022-11-20 12:41:10,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:41:10,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130656688] [2022-11-20 12:41:10,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:41:10,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:41:10,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:41:11,095 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:41:11,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:41:11,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130656688] [2022-11-20 12:41:11,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130656688] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:41:11,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:41:11,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:41:11,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834592355] [2022-11-20 12:41:11,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:41:11,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:41:11,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:41:11,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:41:11,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:41:11,097 INFO L87 Difference]: Start difference. First operand 13004 states and 16478 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:21,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:41:21,744 INFO L93 Difference]: Finished difference Result 16777 states and 21619 transitions. [2022-11-20 12:41:21,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:41:21,745 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2022-11-20 12:41:21,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:41:21,757 INFO L225 Difference]: With dead ends: 16777 [2022-11-20 12:41:21,757 INFO L226 Difference]: Without dead ends: 13771 [2022-11-20 12:41:21,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:41:21,761 INFO L413 NwaCegarLoop]: 783 mSDtfsCounter, 1451 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 2500 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1451 SdHoareTripleChecker+Valid, 1817 SdHoareTripleChecker+Invalid, 2768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 2500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:41:21,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1451 Valid, 1817 Invalid, 2768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 2500 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-20 12:41:21,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13771 states. [2022-11-20 12:41:28,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13771 to 13755. [2022-11-20 12:41:28,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13755 states, 13753 states have (on average 1.2531811241183741) internal successors, (17235), 13754 states have internal predecessors, (17235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:28,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13755 states to 13755 states and 17235 transitions. [2022-11-20 12:41:28,297 INFO L78 Accepts]: Start accepts. Automaton has 13755 states and 17235 transitions. Word has length 99 [2022-11-20 12:41:28,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:41:28,297 INFO L495 AbstractCegarLoop]: Abstraction has 13755 states and 17235 transitions. [2022-11-20 12:41:28,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:28,297 INFO L276 IsEmpty]: Start isEmpty. Operand 13755 states and 17235 transitions. [2022-11-20 12:41:28,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-20 12:41:28,300 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:41:28,300 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:41:28,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-20 12:41:28,301 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:41:28,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:41:28,301 INFO L85 PathProgramCache]: Analyzing trace with hash -987114242, now seen corresponding path program 1 times [2022-11-20 12:41:28,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:41:28,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918736971] [2022-11-20 12:41:28,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:41:28,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:41:28,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:41:29,213 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 22 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:41:29,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:41:29,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918736971] [2022-11-20 12:41:29,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918736971] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:41:29,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401254239] [2022-11-20 12:41:29,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:41:29,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:41:29,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:41:29,214 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:41:29,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 12:41:29,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:41:29,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-20 12:41:29,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:41:43,458 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 26 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:41:43,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:41:46,100 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 22 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:41:46,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401254239] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:41:46,100 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:41:46,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 29 [2022-11-20 12:41:46,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121647226] [2022-11-20 12:41:46,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:41:46,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-20 12:41:46,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:41:46,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-20 12:41:46,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=751, Unknown=5, NotChecked=0, Total=870 [2022-11-20 12:41:46,102 INFO L87 Difference]: Start difference. First operand 13755 states and 17235 transitions. Second operand has 30 states, 30 states have (on average 9.833333333333334) internal successors, (295), 29 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:45:49,553 WARN L233 SmtUtils]: Spent 8.47s on a formula simplification. DAG size of input: 116 DAG size of output: 103 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:46:45,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:46:45,949 INFO L93 Difference]: Finished difference Result 52096 states and 63711 transitions. [2022-11-20 12:46:45,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-11-20 12:46:45,949 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 9.833333333333334) internal successors, (295), 29 states have internal predecessors, (295), 0 states have call successors, (0), 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 119 [2022-11-20 12:46:45,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:46:46,001 INFO L225 Difference]: With dead ends: 52096 [2022-11-20 12:46:46,001 INFO L226 Difference]: Without dead ends: 47134 [2022-11-20 12:46:46,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 226 SyntacticMatches, 2 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5173 ImplicationChecksByTransitivity, 265.9s TimeCoverageRelationStatistics Valid=2889, Invalid=12538, Unknown=73, NotChecked=0, Total=15500 [2022-11-20 12:46:46,015 INFO L413 NwaCegarLoop]: 1892 mSDtfsCounter, 37425 mSDsluCounter, 19249 mSDsCounter, 0 mSdLazyCounter, 1167 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37425 SdHoareTripleChecker+Valid, 21141 SdHoareTripleChecker+Invalid, 2719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1492 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:46:46,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37425 Valid, 21141 Invalid, 2719 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [60 Valid, 1167 Invalid, 0 Unknown, 1492 Unchecked, 2.4s Time] [2022-11-20 12:46:46,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47134 states. [2022-11-20 12:47:05,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47134 to 25061. [2022-11-20 12:47:05,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25061 states, 25059 states have (on average 1.244902031206353) internal successors, (31196), 25060 states have internal predecessors, (31196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:47:05,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25061 states to 25061 states and 31196 transitions. [2022-11-20 12:47:05,801 INFO L78 Accepts]: Start accepts. Automaton has 25061 states and 31196 transitions. Word has length 119 [2022-11-20 12:47:05,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:47:05,801 INFO L495 AbstractCegarLoop]: Abstraction has 25061 states and 31196 transitions. [2022-11-20 12:47:05,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 9.833333333333334) internal successors, (295), 29 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:47:05,801 INFO L276 IsEmpty]: Start isEmpty. Operand 25061 states and 31196 transitions. [2022-11-20 12:47:05,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-20 12:47:05,807 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:47:05,807 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:47:05,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 12:47:06,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-11-20 12:47:06,014 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:47:06,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:06,015 INFO L85 PathProgramCache]: Analyzing trace with hash -7975568, now seen corresponding path program 1 times [2022-11-20 12:47:06,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:47:06,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255784698] [2022-11-20 12:47:06,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:06,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:47:06,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:06,962 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 25 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:47:06,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:47:06,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255784698] [2022-11-20 12:47:06,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255784698] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:47:06,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804235705] [2022-11-20 12:47:06,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:06,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:47:06,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:06,964 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:47:06,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79e8dacb-0c27-4854-b27d-35b9f7e37c2a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 12:47:07,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:07,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-20 12:47:07,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:47:18,289 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 48 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:47:18,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:47:22,054 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 42 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:47:22,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804235705] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:47:22,055 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:47:22,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 32 [2022-11-20 12:47:22,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689309953] [2022-11-20 12:47:22,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:47:22,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-20 12:47:22,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:47:22,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-20 12:47:22,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=929, Unknown=3, NotChecked=0, Total=1056 [2022-11-20 12:47:22,058 INFO L87 Difference]: Start difference. First operand 25061 states and 31196 transitions. Second operand has 33 states, 33 states have (on average 9.727272727272727) internal successors, (321), 32 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)