./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.6_overflow.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcba17cc-4ddf-40e7-b040-8fb9a11ee4f7/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcba17cc-4ddf-40e7-b040-8fb9a11ee4f7/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcba17cc-4ddf-40e7-b040-8fb9a11ee4f7/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcba17cc-4ddf-40e7-b040-8fb9a11ee4f7/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.6_overflow.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcba17cc-4ddf-40e7-b040-8fb9a11ee4f7/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcba17cc-4ddf-40e7-b040-8fb9a11ee4f7/bin/uautomizer-vX5HgA9Q3a --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 2e89791a2e8bde62b11f5e3f45edc8f6b1d8831a0e105552a6da22a3ff44c454 --- 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-b5237d8 [2022-11-21 16:42:25,009 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:42:25,012 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:42:25,051 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:42:25,052 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:42:25,056 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:42:25,060 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:42:25,063 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:42:25,065 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:42:25,071 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:42:25,073 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:42:25,075 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:42:25,076 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:42:25,079 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:42:25,081 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:42:25,083 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:42:25,086 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:42:25,087 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:42:25,089 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:42:25,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:42:25,109 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:42:25,112 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:42:25,114 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:42:25,115 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:42:25,127 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:42:25,128 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:42:25,128 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:42:25,131 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:42:25,132 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:42:25,133 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:42:25,134 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:42:25,136 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:42:25,137 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:42:25,139 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:42:25,140 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:42:25,141 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:42:25,150 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:42:25,150 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:42:25,150 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:42:25,151 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:42:25,152 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:42:25,154 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcba17cc-4ddf-40e7-b040-8fb9a11ee4f7/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 16:42:25,206 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:42:25,209 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:42:25,210 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:42:25,210 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:42:25,211 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:42:25,211 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:42:25,212 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:42:25,212 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:42:25,212 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:42:25,213 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:42:25,214 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:42:25,214 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:42:25,215 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:42:25,215 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:42:25,215 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:42:25,215 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:42:25,216 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:42:25,216 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:42:25,216 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:42:25,216 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:42:25,216 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:42:25,217 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:42:25,217 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:42:25,217 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:42:25,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:42:25,218 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:42:25,218 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:42:25,218 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:42:25,221 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:42:25,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:42:25,221 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:42:25,221 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:42:25,222 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:42:25,222 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_fcba17cc-4ddf-40e7-b040-8fb9a11ee4f7/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcba17cc-4ddf-40e7-b040-8fb9a11ee4f7/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e89791a2e8bde62b11f5e3f45edc8f6b1d8831a0e105552a6da22a3ff44c454 [2022-11-21 16:42:25,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:42:25,608 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:42:25,611 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:42:25,613 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:42:25,614 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:42:25,615 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcba17cc-4ddf-40e7-b040-8fb9a11ee4f7/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/seq-mthreaded/pals_lcr.6_overflow.ufo.UNBOUNDED.pals.c [2022-11-21 16:42:28,971 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:42:29,361 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:42:29,362 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcba17cc-4ddf-40e7-b040-8fb9a11ee4f7/sv-benchmarks/c/seq-mthreaded/pals_lcr.6_overflow.ufo.UNBOUNDED.pals.c [2022-11-21 16:42:29,373 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcba17cc-4ddf-40e7-b040-8fb9a11ee4f7/bin/uautomizer-vX5HgA9Q3a/data/2cb3e298d/ac0abc5a2c634f0ba833d339357ae2bb/FLAGb5a109aaf [2022-11-21 16:42:29,390 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcba17cc-4ddf-40e7-b040-8fb9a11ee4f7/bin/uautomizer-vX5HgA9Q3a/data/2cb3e298d/ac0abc5a2c634f0ba833d339357ae2bb [2022-11-21 16:42:29,393 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:42:29,395 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:42:29,397 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:42:29,398 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:42:29,402 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:42:29,403 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:42:29" (1/1) ... [2022-11-21 16:42:29,404 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47af4af2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:42:29, skipping insertion in model container [2022-11-21 16:42:29,405 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:42:29" (1/1) ... [2022-11-21 16:42:29,414 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:42:29,451 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:42:29,757 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_fcba17cc-4ddf-40e7-b040-8fb9a11ee4f7/sv-benchmarks/c/seq-mthreaded/pals_lcr.6_overflow.ufo.UNBOUNDED.pals.c[15177,15190] [2022-11-21 16:42:29,763 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:42:29,778 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:42:29,880 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_fcba17cc-4ddf-40e7-b040-8fb9a11ee4f7/sv-benchmarks/c/seq-mthreaded/pals_lcr.6_overflow.ufo.UNBOUNDED.pals.c[15177,15190] [2022-11-21 16:42:29,881 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:42:29,903 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:42:29,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:42:29 WrapperNode [2022-11-21 16:42:29,903 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:42:29,905 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:42:29,905 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:42:29,905 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:42:29,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:42:29" (1/1) ... [2022-11-21 16:42:29,928 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:42:29" (1/1) ... [2022-11-21 16:42:29,987 INFO L138 Inliner]: procedures = 26, calls = 17, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 364 [2022-11-21 16:42:29,991 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:42:29,992 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:42:29,993 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:42:29,993 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:42:30,005 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:42:29" (1/1) ... [2022-11-21 16:42:30,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:42:29" (1/1) ... [2022-11-21 16:42:30,027 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:42:29" (1/1) ... [2022-11-21 16:42:30,027 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:42:29" (1/1) ... [2022-11-21 16:42:30,036 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:42:29" (1/1) ... [2022-11-21 16:42:30,059 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:42:29" (1/1) ... [2022-11-21 16:42:30,068 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:42:29" (1/1) ... [2022-11-21 16:42:30,070 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:42:29" (1/1) ... [2022-11-21 16:42:30,074 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:42:30,089 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:42:30,089 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:42:30,089 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:42:30,090 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:42:29" (1/1) ... [2022-11-21 16:42:30,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:42:30,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcba17cc-4ddf-40e7-b040-8fb9a11ee4f7/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:42:30,144 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcba17cc-4ddf-40e7-b040-8fb9a11ee4f7/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:42:30,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcba17cc-4ddf-40e7-b040-8fb9a11ee4f7/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:42:30,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:42:30,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:42:30,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:42:30,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:42:30,368 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:42:30,371 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:42:31,149 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:42:31,158 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:42:31,159 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-21 16:42:31,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:42:31 BoogieIcfgContainer [2022-11-21 16:42:31,162 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:42:31,165 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:42:31,165 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:42:31,169 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:42:31,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:42:29" (1/3) ... [2022-11-21 16:42:31,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dac5774 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:42:31, skipping insertion in model container [2022-11-21 16:42:31,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:42:29" (2/3) ... [2022-11-21 16:42:31,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dac5774 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:42:31, skipping insertion in model container [2022-11-21 16:42:31,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:42:31" (3/3) ... [2022-11-21 16:42:31,174 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6_overflow.ufo.UNBOUNDED.pals.c [2022-11-21 16:42:31,218 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:42:31,219 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 16:42:31,300 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:42:31,306 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;@24346b2a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:42:31,306 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 16:42:31,316 INFO L276 IsEmpty]: Start isEmpty. Operand has 98 states, 96 states have (on average 1.7708333333333333) internal successors, (170), 97 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:42:31,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-21 16:42:31,331 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:42:31,332 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] [2022-11-21 16:42:31,333 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:42:31,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:42:31,339 INFO L85 PathProgramCache]: Analyzing trace with hash 203642846, now seen corresponding path program 1 times [2022-11-21 16:42:31,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:42:31,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753690609] [2022-11-21 16:42:31,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:42:31,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:42:31,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:42:31,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:42:31,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:42:31,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753690609] [2022-11-21 16:42:31,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753690609] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:42:31,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:42:31,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:42:31,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948033394] [2022-11-21 16:42:31,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:42:31,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 16:42:31,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:42:31,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 16:42:31,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 16:42:31,760 INFO L87 Difference]: Start difference. First operand has 98 states, 96 states have (on average 1.7708333333333333) internal successors, (170), 97 states have internal predecessors, (170), 0 states have call successors, (0), 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 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:42:31,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:42:31,823 INFO L93 Difference]: Finished difference Result 147 states and 251 transitions. [2022-11-21 16:42:31,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 16:42:31,829 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2022-11-21 16:42:31,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:42:31,849 INFO L225 Difference]: With dead ends: 147 [2022-11-21 16:42:31,850 INFO L226 Difference]: Without dead ends: 94 [2022-11-21 16:42:31,855 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 [2022-11-21 16:42:31,861 INFO L413 NwaCegarLoop]: 163 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, 163 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 [2022-11-21 16:42:31,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:42:31,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-11-21 16:42:31,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2022-11-21 16:42:31,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.7526881720430108) internal successors, (163), 93 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:42:31,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 163 transitions. [2022-11-21 16:42:31,945 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 163 transitions. Word has length 25 [2022-11-21 16:42:31,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:42:31,946 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 163 transitions. [2022-11-21 16:42:31,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:42:31,947 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 163 transitions. [2022-11-21 16:42:31,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-21 16:42:31,953 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:42:31,953 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] [2022-11-21 16:42:31,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:42:31,954 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:42:31,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:42:31,957 INFO L85 PathProgramCache]: Analyzing trace with hash -614005604, now seen corresponding path program 1 times [2022-11-21 16:42:31,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:42:31,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440263686] [2022-11-21 16:42:31,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:42:31,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:42:32,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:42:32,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:42:32,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:42:32,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440263686] [2022-11-21 16:42:32,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440263686] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:42:32,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:42:32,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:42:32,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681458684] [2022-11-21 16:42:32,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:42:32,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:42:32,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:42:32,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:42:32,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:42:32,286 INFO L87 Difference]: Start difference. First operand 94 states and 163 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:42:32,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:42:32,406 INFO L93 Difference]: Finished difference Result 146 states and 244 transitions. [2022-11-21 16:42:32,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:42:32,407 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2022-11-21 16:42:32,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:42:32,408 INFO L225 Difference]: With dead ends: 146 [2022-11-21 16:42:32,409 INFO L226 Difference]: Without dead ends: 94 [2022-11-21 16:42:32,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:42:32,411 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 3 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:42:32,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 601 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:42:32,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-11-21 16:42:32,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2022-11-21 16:42:32,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.3225806451612903) internal successors, (123), 93 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:42:32,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 123 transitions. [2022-11-21 16:42:32,419 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 123 transitions. Word has length 25 [2022-11-21 16:42:32,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:42:32,420 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 123 transitions. [2022-11-21 16:42:32,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:42:32,420 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 123 transitions. [2022-11-21 16:42:32,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-21 16:42:32,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:42:32,422 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:42:32,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 16:42:32,423 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:42:32,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:42:32,424 INFO L85 PathProgramCache]: Analyzing trace with hash 877370829, now seen corresponding path program 1 times [2022-11-21 16:42:32,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:42:32,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699923901] [2022-11-21 16:42:32,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:42:32,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:42:32,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:42:32,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:42:32,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:42:32,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699923901] [2022-11-21 16:42:32,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699923901] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:42:32,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:42:32,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 16:42:32,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094412394] [2022-11-21 16:42:32,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:42:32,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 16:42:32,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:42:32,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 16:42:32,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:42:32,705 INFO L87 Difference]: Start difference. First operand 94 states and 123 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 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) [2022-11-21 16:42:33,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:42:33,105 INFO L93 Difference]: Finished difference Result 670 states and 1047 transitions. [2022-11-21 16:42:33,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 16:42:33,106 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-11-21 16:42:33,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:42:33,110 INFO L225 Difference]: With dead ends: 670 [2022-11-21 16:42:33,110 INFO L226 Difference]: Without dead ends: 622 [2022-11-21 16:42:33,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2022-11-21 16:42:33,112 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 1065 mSDsluCounter, 2134 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1065 SdHoareTripleChecker+Valid, 2253 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:42:33,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1065 Valid, 2253 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 16:42:33,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2022-11-21 16:42:33,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 140. [2022-11-21 16:42:33,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.4172661870503598) internal successors, (197), 139 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:42:33,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 197 transitions. [2022-11-21 16:42:33,136 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 197 transitions. Word has length 64 [2022-11-21 16:42:33,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:42:33,137 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 197 transitions. [2022-11-21 16:42:33,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 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) [2022-11-21 16:42:33,137 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 197 transitions. [2022-11-21 16:42:33,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-21 16:42:33,139 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:42:33,139 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:42:33,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 16:42:33,140 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:42:33,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:42:33,141 INFO L85 PathProgramCache]: Analyzing trace with hash -75917667, now seen corresponding path program 1 times [2022-11-21 16:42:33,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:42:33,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311339671] [2022-11-21 16:42:33,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:42:33,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:42:33,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:42:33,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:42:33,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:42:33,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311339671] [2022-11-21 16:42:33,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311339671] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:42:33,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:42:33,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:42:33,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671310815] [2022-11-21 16:42:33,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:42:33,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:42:33,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:42:33,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:42:33,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:42:33,384 INFO L87 Difference]: Start difference. First operand 140 states and 197 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) [2022-11-21 16:42:33,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:42:33,438 INFO L93 Difference]: Finished difference Result 317 states and 480 transitions. [2022-11-21 16:42:33,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:42:33,440 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 [2022-11-21 16:42:33,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:42:33,442 INFO L225 Difference]: With dead ends: 317 [2022-11-21 16:42:33,442 INFO L226 Difference]: Without dead ends: 223 [2022-11-21 16:42:33,444 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 [2022-11-21 16:42:33,456 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 51 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 193 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 [2022-11-21 16:42:33,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 193 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:42:33,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-11-21 16:42:33,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 221. [2022-11-21 16:42:33,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 1.4772727272727273) internal successors, (325), 220 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:42:33,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 325 transitions. [2022-11-21 16:42:33,502 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 325 transitions. Word has length 66 [2022-11-21 16:42:33,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:42:33,505 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 325 transitions. [2022-11-21 16:42:33,505 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) [2022-11-21 16:42:33,505 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 325 transitions. [2022-11-21 16:42:33,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-21 16:42:33,515 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:42:33,515 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:42:33,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 16:42:33,516 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:42:33,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:42:33,517 INFO L85 PathProgramCache]: Analyzing trace with hash -9424155, now seen corresponding path program 1 times [2022-11-21 16:42:33,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:42:33,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945934113] [2022-11-21 16:42:33,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:42:33,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:42:33,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:42:33,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:42:33,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:42:33,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945934113] [2022-11-21 16:42:33,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945934113] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:42:33,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:42:33,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 16:42:33,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908989972] [2022-11-21 16:42:33,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:42:33,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 16:42:33,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:42:33,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 16:42:33,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:42:33,993 INFO L87 Difference]: Start difference. First operand 221 states and 325 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 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) [2022-11-21 16:42:34,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:42:34,285 INFO L93 Difference]: Finished difference Result 398 states and 605 transitions. [2022-11-21 16:42:34,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 16:42:34,286 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 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 [2022-11-21 16:42:34,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:42:34,287 INFO L225 Difference]: With dead ends: 398 [2022-11-21 16:42:34,287 INFO L226 Difference]: Without dead ends: 223 [2022-11-21 16:42:34,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2022-11-21 16:42:34,289 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 490 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:42:34,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 483 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:42:34,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-11-21 16:42:34,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 221. [2022-11-21 16:42:34,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 1.4681818181818183) internal successors, (323), 220 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:42:34,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 323 transitions. [2022-11-21 16:42:34,310 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 323 transitions. Word has length 66 [2022-11-21 16:42:34,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:42:34,311 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 323 transitions. [2022-11-21 16:42:34,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 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) [2022-11-21 16:42:34,311 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 323 transitions. [2022-11-21 16:42:34,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-21 16:42:34,312 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:42:34,312 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:42:34,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 16:42:34,313 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:42:34,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:42:34,313 INFO L85 PathProgramCache]: Analyzing trace with hash -706871807, now seen corresponding path program 1 times [2022-11-21 16:42:34,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:42:34,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431858487] [2022-11-21 16:42:34,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:42:34,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:42:34,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:42:34,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:42:34,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:42:34,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431858487] [2022-11-21 16:42:34,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431858487] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:42:34,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:42:34,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:42:34,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886691917] [2022-11-21 16:42:34,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:42:34,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:42:34,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:42:34,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:42:34,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:42:34,539 INFO L87 Difference]: Start difference. First operand 221 states and 323 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:42:34,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:42:34,650 INFO L93 Difference]: Finished difference Result 393 states and 590 transitions. [2022-11-21 16:42:34,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:42:34,650 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-11-21 16:42:34,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:42:34,654 INFO L225 Difference]: With dead ends: 393 [2022-11-21 16:42:34,655 INFO L226 Difference]: Without dead ends: 391 [2022-11-21 16:42:34,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:42:34,659 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 202 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 562 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 [2022-11-21 16:42:34,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 562 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:42:34,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2022-11-21 16:42:34,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 227. [2022-11-21 16:42:34,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 226 states have (on average 1.4513274336283186) internal successors, (328), 226 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:42:34,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 328 transitions. [2022-11-21 16:42:34,692 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 328 transitions. Word has length 67 [2022-11-21 16:42:34,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:42:34,693 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 328 transitions. [2022-11-21 16:42:34,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:42:34,693 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 328 transitions. [2022-11-21 16:42:34,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-21 16:42:34,694 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:42:34,695 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:42:34,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 16:42:34,695 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:42:34,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:42:34,696 INFO L85 PathProgramCache]: Analyzing trace with hash -227657403, now seen corresponding path program 1 times [2022-11-21 16:42:34,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:42:34,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456434995] [2022-11-21 16:42:34,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:42:34,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:42:34,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:42:34,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:42:34,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:42:34,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456434995] [2022-11-21 16:42:34,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456434995] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:42:34,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:42:34,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:42:34,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563905772] [2022-11-21 16:42:34,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:42:34,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:42:34,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:42:34,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:42:34,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:42:34,807 INFO L87 Difference]: Start difference. First operand 227 states and 328 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) [2022-11-21 16:42:34,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:42:34,859 INFO L93 Difference]: Finished difference Result 421 states and 629 transitions. [2022-11-21 16:42:34,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:42:34,860 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 [2022-11-21 16:42:34,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:42:34,862 INFO L225 Difference]: With dead ends: 421 [2022-11-21 16:42:34,862 INFO L226 Difference]: Without dead ends: 321 [2022-11-21 16:42:34,863 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 [2022-11-21 16:42:34,864 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 67 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 263 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 [2022-11-21 16:42:34,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 263 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:42:34,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-11-21 16:42:34,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 319. [2022-11-21 16:42:34,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 318 states have (on average 1.4748427672955975) internal successors, (469), 318 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:42:34,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 469 transitions. [2022-11-21 16:42:34,902 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 469 transitions. Word has length 68 [2022-11-21 16:42:34,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:42:34,903 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 469 transitions. [2022-11-21 16:42:34,903 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) [2022-11-21 16:42:34,903 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 469 transitions. [2022-11-21 16:42:34,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-21 16:42:34,905 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:42:34,905 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:42:34,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 16:42:34,905 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:42:34,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:42:34,906 INFO L85 PathProgramCache]: Analyzing trace with hash -64742843, now seen corresponding path program 1 times [2022-11-21 16:42:34,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:42:34,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576448172] [2022-11-21 16:42:34,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:42:34,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:42:34,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:42:34,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:42:34,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:42:34,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576448172] [2022-11-21 16:42:34,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576448172] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:42:34,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:42:34,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:42:34,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222782225] [2022-11-21 16:42:35,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:42:35,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:42:35,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:42:35,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:42:35,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:42:35,002 INFO L87 Difference]: Start difference. First operand 319 states and 469 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) [2022-11-21 16:42:35,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:42:35,086 INFO L93 Difference]: Finished difference Result 837 states and 1269 transitions. [2022-11-21 16:42:35,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:42:35,087 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 [2022-11-21 16:42:35,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:42:35,091 INFO L225 Difference]: With dead ends: 837 [2022-11-21 16:42:35,091 INFO L226 Difference]: Without dead ends: 566 [2022-11-21 16:42:35,092 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 [2022-11-21 16:42:35,093 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 65 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 269 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 [2022-11-21 16:42:35,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 269 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:42:35,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2022-11-21 16:42:35,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 564. [2022-11-21 16:42:35,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 563 states have (on average 1.4937833037300177) internal successors, (841), 563 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:42:35,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 841 transitions. [2022-11-21 16:42:35,157 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 841 transitions. Word has length 68 [2022-11-21 16:42:35,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:42:35,158 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 841 transitions. [2022-11-21 16:42:35,158 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) [2022-11-21 16:42:35,158 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 841 transitions. [2022-11-21 16:42:35,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-21 16:42:35,162 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:42:35,162 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:42:35,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 16:42:35,167 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:42:35,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:42:35,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1437375557, now seen corresponding path program 1 times [2022-11-21 16:42:35,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:42:35,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972999909] [2022-11-21 16:42:35,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:42:35,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:42:35,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:42:35,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:42:35,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:42:35,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972999909] [2022-11-21 16:42:35,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972999909] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:42:35,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:42:35,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:42:35,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706306888] [2022-11-21 16:42:35,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:42:35,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:42:35,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:42:35,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:42:35,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:42:35,255 INFO L87 Difference]: Start difference. First operand 564 states and 841 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) [2022-11-21 16:42:35,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:42:35,386 INFO L93 Difference]: Finished difference Result 1548 states and 2343 transitions. [2022-11-21 16:42:35,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:42:35,386 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 [2022-11-21 16:42:35,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:42:35,390 INFO L225 Difference]: With dead ends: 1548 [2022-11-21 16:42:35,390 INFO L226 Difference]: Without dead ends: 1032 [2022-11-21 16:42:35,391 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 [2022-11-21 16:42:35,393 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 61 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 265 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 [2022-11-21 16:42:35,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 265 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:42:35,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2022-11-21 16:42:35,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 1030. [2022-11-21 16:42:35,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1030 states, 1029 states have (on average 1.4936831875607386) internal successors, (1537), 1029 states have internal predecessors, (1537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:42:35,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1030 states to 1030 states and 1537 transitions. [2022-11-21 16:42:35,538 INFO L78 Accepts]: Start accepts. Automaton has 1030 states and 1537 transitions. Word has length 68 [2022-11-21 16:42:35,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:42:35,538 INFO L495 AbstractCegarLoop]: Abstraction has 1030 states and 1537 transitions. [2022-11-21 16:42:35,539 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) [2022-11-21 16:42:35,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1030 states and 1537 transitions. [2022-11-21 16:42:35,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-21 16:42:35,539 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:42:35,540 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:42:35,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 16:42:35,540 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:42:35,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:42:35,541 INFO L85 PathProgramCache]: Analyzing trace with hash -778093243, now seen corresponding path program 1 times [2022-11-21 16:42:35,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:42:35,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319416528] [2022-11-21 16:42:35,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:42:35,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:42:35,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:42:35,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:42:35,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:42:35,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319416528] [2022-11-21 16:42:35,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319416528] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:42:35,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:42:35,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:42:35,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170272253] [2022-11-21 16:42:35,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:42:35,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:42:35,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:42:35,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:42:35,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:42:35,601 INFO L87 Difference]: Start difference. First operand 1030 states and 1537 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) [2022-11-21 16:42:35,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:42:35,884 INFO L93 Difference]: Finished difference Result 2898 states and 4347 transitions. [2022-11-21 16:42:35,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:42:35,885 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 [2022-11-21 16:42:35,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:42:35,891 INFO L225 Difference]: With dead ends: 2898 [2022-11-21 16:42:35,892 INFO L226 Difference]: Without dead ends: 1916 [2022-11-21 16:42:35,893 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 [2022-11-21 16:42:35,894 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 59 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 267 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 [2022-11-21 16:42:35,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 267 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:42:35,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1916 states. [2022-11-21 16:42:36,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1916 to 1914. [2022-11-21 16:42:36,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1914 states, 1913 states have (on average 1.480920020909566) internal successors, (2833), 1913 states have internal predecessors, (2833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:42:36,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 2833 transitions. [2022-11-21 16:42:36,180 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 2833 transitions. Word has length 68 [2022-11-21 16:42:36,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:42:36,180 INFO L495 AbstractCegarLoop]: Abstraction has 1914 states and 2833 transitions. [2022-11-21 16:42:36,180 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) [2022-11-21 16:42:36,180 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 2833 transitions. [2022-11-21 16:42:36,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-21 16:42:36,181 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:42:36,181 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:42:36,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 16:42:36,182 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:42:36,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:42:36,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1002839621, now seen corresponding path program 1 times [2022-11-21 16:42:36,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:42:36,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357436657] [2022-11-21 16:42:36,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:42:36,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:42:36,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:42:36,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:42:36,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:42:36,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357436657] [2022-11-21 16:42:36,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357436657] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:42:36,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:42:36,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:42:36,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384954599] [2022-11-21 16:42:36,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:42:36,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:42:36,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:42:36,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:42:36,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:42:36,246 INFO L87 Difference]: Start difference. First operand 1914 states and 2833 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) [2022-11-21 16:42:36,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:42:36,782 INFO L93 Difference]: Finished difference Result 5454 states and 8067 transitions. [2022-11-21 16:42:36,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:42:36,783 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 [2022-11-21 16:42:36,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:42:36,796 INFO L225 Difference]: With dead ends: 5454 [2022-11-21 16:42:36,796 INFO L226 Difference]: Without dead ends: 3588 [2022-11-21 16:42:36,801 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 [2022-11-21 16:42:36,801 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 57 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 269 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 [2022-11-21 16:42:36,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 269 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:42:36,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3588 states. [2022-11-21 16:42:37,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3588 to 3586. [2022-11-21 16:42:37,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3586 states, 3585 states have (on average 1.4596931659693166) internal successors, (5233), 3585 states have internal predecessors, (5233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:42:37,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3586 states to 3586 states and 5233 transitions. [2022-11-21 16:42:37,499 INFO L78 Accepts]: Start accepts. Automaton has 3586 states and 5233 transitions. Word has length 68 [2022-11-21 16:42:37,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:42:37,499 INFO L495 AbstractCegarLoop]: Abstraction has 3586 states and 5233 transitions. [2022-11-21 16:42:37,499 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) [2022-11-21 16:42:37,499 INFO L276 IsEmpty]: Start isEmpty. Operand 3586 states and 5233 transitions. [2022-11-21 16:42:37,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-21 16:42:37,500 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:42:37,500 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:42:37,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 16:42:37,500 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:42:37,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:42:37,501 INFO L85 PathProgramCache]: Analyzing trace with hash 199113541, now seen corresponding path program 1 times [2022-11-21 16:42:37,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:42:37,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051427891] [2022-11-21 16:42:37,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:42:37,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:42:37,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:42:37,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:42:37,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:42:37,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051427891] [2022-11-21 16:42:37,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051427891] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:42:37,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:42:37,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:42:37,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565044315] [2022-11-21 16:42:37,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:42:37,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:42:37,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:42:37,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:42:37,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:42:37,561 INFO L87 Difference]: Start difference. First operand 3586 states and 5233 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) [2022-11-21 16:42:38,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:42:38,651 INFO L93 Difference]: Finished difference Result 10278 states and 14931 transitions. [2022-11-21 16:42:38,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:42:38,652 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 [2022-11-21 16:42:38,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:42:38,677 INFO L225 Difference]: With dead ends: 10278 [2022-11-21 16:42:38,677 INFO L226 Difference]: Without dead ends: 6740 [2022-11-21 16:42:38,682 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 [2022-11-21 16:42:38,683 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 63 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 271 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 [2022-11-21 16:42:38,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 271 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:42:38,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6740 states. [2022-11-21 16:42:39,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6740 to 6738. [2022-11-21 16:42:39,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6738 states, 6737 states have (on average 1.4322398693780614) internal successors, (9649), 6737 states have internal predecessors, (9649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:42:39,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6738 states to 6738 states and 9649 transitions. [2022-11-21 16:42:39,709 INFO L78 Accepts]: Start accepts. Automaton has 6738 states and 9649 transitions. Word has length 68 [2022-11-21 16:42:39,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:42:39,709 INFO L495 AbstractCegarLoop]: Abstraction has 6738 states and 9649 transitions. [2022-11-21 16:42:39,709 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) [2022-11-21 16:42:39,710 INFO L276 IsEmpty]: Start isEmpty. Operand 6738 states and 9649 transitions. [2022-11-21 16:42:39,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-21 16:42:39,714 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:42:39,714 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 16:42:39,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 16:42:39,715 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:42:39,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:42:39,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1085081155, now seen corresponding path program 1 times [2022-11-21 16:42:39,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:42:39,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83238015] [2022-11-21 16:42:39,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:42:39,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:42:39,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:42:40,016 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:42:40,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:42:40,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83238015] [2022-11-21 16:42:40,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83238015] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:42:40,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:42:40,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 16:42:40,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753623493] [2022-11-21 16:42:40,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:42:40,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 16:42:40,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:42:40,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 16:42:40,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:42:40,019 INFO L87 Difference]: Start difference. First operand 6738 states and 9649 transitions. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:42:45,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:42:45,588 INFO L93 Difference]: Finished difference Result 46336 states and 66424 transitions. [2022-11-21 16:42:45,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 16:42:45,589 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 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 89 [2022-11-21 16:42:45,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:42:45,792 INFO L225 Difference]: With dead ends: 46336 [2022-11-21 16:42:45,792 INFO L226 Difference]: Without dead ends: 41598 [2022-11-21 16:42:45,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-11-21 16:42:45,814 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 886 mSDsluCounter, 926 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 1123 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:42:45,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [886 Valid, 1123 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:42:45,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41598 states. [2022-11-21 16:42:48,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41598 to 12466. [2022-11-21 16:42:48,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12466 states, 12465 states have (on average 1.4261532290413157) internal successors, (17777), 12465 states have internal predecessors, (17777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:42:48,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12466 states to 12466 states and 17777 transitions. [2022-11-21 16:42:48,589 INFO L78 Accepts]: Start accepts. Automaton has 12466 states and 17777 transitions. Word has length 89 [2022-11-21 16:42:48,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:42:48,590 INFO L495 AbstractCegarLoop]: Abstraction has 12466 states and 17777 transitions. [2022-11-21 16:42:48,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:42:48,591 INFO L276 IsEmpty]: Start isEmpty. Operand 12466 states and 17777 transitions. [2022-11-21 16:42:48,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-21 16:42:48,595 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:42:48,596 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 16:42:48,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 16:42:48,596 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:42:48,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:42:48,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1247995715, now seen corresponding path program 1 times [2022-11-21 16:42:48,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:42:48,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728969708] [2022-11-21 16:42:48,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:42:48,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:42:48,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:42:48,875 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 16:42:48,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:42:48,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728969708] [2022-11-21 16:42:48,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728969708] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:42:48,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:42:48,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 16:42:48,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486895307] [2022-11-21 16:42:48,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:42:48,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 16:42:48,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:42:48,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 16:42:48,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:42:48,879 INFO L87 Difference]: Start difference. First operand 12466 states and 17777 transitions. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:42:55,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:42:55,487 INFO L93 Difference]: Finished difference Result 53024 states and 75960 transitions. [2022-11-21 16:42:55,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 16:42:55,488 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2022-11-21 16:42:55,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:42:55,710 INFO L225 Difference]: With dead ends: 53024 [2022-11-21 16:42:55,710 INFO L226 Difference]: Without dead ends: 46334 [2022-11-21 16:42:55,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-11-21 16:42:55,728 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 888 mSDsluCounter, 890 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 1086 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:42:55,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 1086 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:42:55,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46334 states. [2022-11-21 16:42:58,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46334 to 21522. [2022-11-21 16:42:58,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21522 states, 21521 states have (on average 1.4222852097950838) internal successors, (30609), 21521 states have internal predecessors, (30609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:42:58,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21522 states to 21522 states and 30609 transitions. [2022-11-21 16:42:58,795 INFO L78 Accepts]: Start accepts. Automaton has 21522 states and 30609 transitions. Word has length 89 [2022-11-21 16:42:58,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:42:58,795 INFO L495 AbstractCegarLoop]: Abstraction has 21522 states and 30609 transitions. [2022-11-21 16:42:58,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:42:58,796 INFO L276 IsEmpty]: Start isEmpty. Operand 21522 states and 30609 transitions. [2022-11-21 16:42:58,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-21 16:42:58,801 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:42:58,802 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 16:42:58,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 16:42:58,802 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:42:58,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:42:58,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1544853181, now seen corresponding path program 1 times [2022-11-21 16:42:58,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:42:58,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618958855] [2022-11-21 16:42:58,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:42:58,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:42:58,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:42:59,054 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-21 16:42:59,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:42:59,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618958855] [2022-11-21 16:42:59,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618958855] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:42:59,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:42:59,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 16:42:59,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498888961] [2022-11-21 16:42:59,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:42:59,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 16:42:59,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:42:59,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 16:42:59,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:42:59,058 INFO L87 Difference]: Start difference. First operand 21522 states and 30609 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:43:06,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:43:06,561 INFO L93 Difference]: Finished difference Result 59712 states and 85464 transitions. [2022-11-21 16:43:06,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 16:43:06,563 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 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 89 [2022-11-21 16:43:06,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:43:06,694 INFO L225 Difference]: With dead ends: 59712 [2022-11-21 16:43:06,695 INFO L226 Difference]: Without dead ends: 53022 [2022-11-21 16:43:06,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-11-21 16:43:06,717 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 930 mSDsluCounter, 909 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 930 SdHoareTripleChecker+Valid, 1103 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:43:06,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [930 Valid, 1103 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 16:43:06,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53022 states. [2022-11-21 16:43:10,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53022 to 28210. [2022-11-21 16:43:10,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28210 states, 28209 states have (on average 1.4219929809635223) internal successors, (40113), 28209 states have internal predecessors, (40113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:43:10,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28210 states to 28210 states and 40113 transitions. [2022-11-21 16:43:10,955 INFO L78 Accepts]: Start accepts. Automaton has 28210 states and 40113 transitions. Word has length 89 [2022-11-21 16:43:10,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:43:10,955 INFO L495 AbstractCegarLoop]: Abstraction has 28210 states and 40113 transitions. [2022-11-21 16:43:10,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:43:10,956 INFO L276 IsEmpty]: Start isEmpty. Operand 28210 states and 40113 transitions. [2022-11-21 16:43:10,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-21 16:43:10,962 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:43:10,962 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 16:43:10,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-21 16:43:10,963 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:43:10,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:43:10,963 INFO L85 PathProgramCache]: Analyzing trace with hash 534645315, now seen corresponding path program 1 times [2022-11-21 16:43:10,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:43:10,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007778172] [2022-11-21 16:43:10,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:43:10,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:43:10,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:43:11,263 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-21 16:43:11,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:43:11,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007778172] [2022-11-21 16:43:11,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007778172] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:43:11,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:43:11,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 16:43:11,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706835829] [2022-11-21 16:43:11,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:43:11,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 16:43:11,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:43:11,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 16:43:11,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:43:11,269 INFO L87 Difference]: Start difference. First operand 28210 states and 40113 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:43:19,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:43:19,562 INFO L93 Difference]: Finished difference Result 66400 states and 94968 transitions. [2022-11-21 16:43:19,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 16:43:19,563 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 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 89 [2022-11-21 16:43:19,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:43:19,674 INFO L225 Difference]: With dead ends: 66400 [2022-11-21 16:43:19,674 INFO L226 Difference]: Without dead ends: 59710 [2022-11-21 16:43:19,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-11-21 16:43:19,692 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 983 mSDsluCounter, 895 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:43:19,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [983 Valid, 1087 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 16:43:19,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59710 states. [2022-11-21 16:43:24,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59710 to 34898. [2022-11-21 16:43:24,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34898 states, 34897 states have (on average 1.4218127632747801) internal successors, (49617), 34897 states have internal predecessors, (49617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:43:24,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34898 states to 34898 states and 49617 transitions. [2022-11-21 16:43:24,764 INFO L78 Accepts]: Start accepts. Automaton has 34898 states and 49617 transitions. Word has length 89 [2022-11-21 16:43:24,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:43:24,764 INFO L495 AbstractCegarLoop]: Abstraction has 34898 states and 49617 transitions. [2022-11-21 16:43:24,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:43:24,765 INFO L276 IsEmpty]: Start isEmpty. Operand 34898 states and 49617 transitions. [2022-11-21 16:43:24,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-21 16:43:24,771 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:43:24,771 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 16:43:24,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-21 16:43:24,772 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:43:24,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:43:24,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1979389117, now seen corresponding path program 1 times [2022-11-21 16:43:24,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:43:24,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857788735] [2022-11-21 16:43:24,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:43:24,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:43:24,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:43:25,023 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-21 16:43:25,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:43:25,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857788735] [2022-11-21 16:43:25,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857788735] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:43:25,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:43:25,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 16:43:25,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528130112] [2022-11-21 16:43:25,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:43:25,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 16:43:25,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:43:25,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 16:43:25,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:43:25,027 INFO L87 Difference]: Start difference. First operand 34898 states and 49617 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:43:35,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:43:35,381 INFO L93 Difference]: Finished difference Result 73088 states and 104472 transitions. [2022-11-21 16:43:35,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 16:43:35,382 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2022-11-21 16:43:35,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:43:35,487 INFO L225 Difference]: With dead ends: 73088 [2022-11-21 16:43:35,487 INFO L226 Difference]: Without dead ends: 66398 [2022-11-21 16:43:35,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-11-21 16:43:35,506 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 896 mSDsluCounter, 952 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 896 SdHoareTripleChecker+Valid, 1144 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:43:35,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [896 Valid, 1144 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:43:35,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66398 states. [2022-11-21 16:43:42,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66398 to 41586. [2022-11-21 16:43:42,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41586 states, 41585 states have (on average 1.4216905134062763) internal successors, (59121), 41585 states have internal predecessors, (59121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:43:43,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41586 states to 41586 states and 59121 transitions. [2022-11-21 16:43:43,045 INFO L78 Accepts]: Start accepts. Automaton has 41586 states and 59121 transitions. Word has length 89 [2022-11-21 16:43:43,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:43:43,046 INFO L495 AbstractCegarLoop]: Abstraction has 41586 states and 59121 transitions. [2022-11-21 16:43:43,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:43:43,046 INFO L276 IsEmpty]: Start isEmpty. Operand 41586 states and 59121 transitions. [2022-11-21 16:43:43,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-21 16:43:43,053 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:43:43,054 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-21 16:43:43,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-21 16:43:43,054 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:43:43,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:43:43,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1511852099, now seen corresponding path program 1 times [2022-11-21 16:43:43,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:43:43,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450528114] [2022-11-21 16:43:43,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:43:43,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:43:43,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:43:43,400 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-21 16:43:43,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:43:43,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450528114] [2022-11-21 16:43:43,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450528114] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:43:43,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:43:43,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 16:43:43,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769384489] [2022-11-21 16:43:43,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:43:43,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 16:43:43,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:43:43,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 16:43:43,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:43:43,403 INFO L87 Difference]: Start difference. First operand 41586 states and 59121 transitions. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)