./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.3.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_79758909-0206-4eea-9e4f-529a24de383c/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79758909-0206-4eea-9e4f-529a24de383c/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_79758909-0206-4eea-9e4f-529a24de383c/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79758909-0206-4eea-9e4f-529a24de383c/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.3.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79758909-0206-4eea-9e4f-529a24de383c/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_79758909-0206-4eea-9e4f-529a24de383c/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 b7eede2d26a445be0bc2850b4aae5c570af9ea0b845e235e7359967bb638a4a3 --- 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 16:19:17,465 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:19:17,468 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:19:17,514 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:19:17,514 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:19:17,517 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:19:17,521 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:19:17,524 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:19:17,526 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:19:17,531 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:19:17,532 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:19:17,533 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:19:17,533 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:19:17,534 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:19:17,535 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:19:17,536 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:19:17,536 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:19:17,537 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:19:17,539 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:19:17,540 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:19:17,542 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:19:17,546 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:19:17,548 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:19:17,549 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:19:17,563 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:19:17,563 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:19:17,564 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:19:17,565 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:19:17,565 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:19:17,566 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:19:17,566 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:19:17,567 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:19:17,568 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:19:17,568 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:19:17,569 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:19:17,570 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:19:17,570 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:19:17,570 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:19:17,571 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:19:17,571 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:19:17,572 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:19:17,573 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79758909-0206-4eea-9e4f-529a24de383c/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 16:19:17,591 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:19:17,592 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:19:17,592 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:19:17,592 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:19:17,593 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:19:17,593 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:19:17,594 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:19:17,594 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:19:17,594 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:19:17,595 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:19:17,595 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:19:17,595 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:19:17,595 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:19:17,596 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:19:17,596 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:19:17,596 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:19:17,596 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:19:17,597 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:19:17,597 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:19:17,597 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:19:17,597 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:19:17,598 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:19:17,598 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:19:17,598 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:19:17,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:19:17,599 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:19:17,599 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:19:17,599 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:19:17,599 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:19:17,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:19:17,600 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:19:17,600 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:19:17,600 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:19:17,600 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_79758909-0206-4eea-9e4f-529a24de383c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79758909-0206-4eea-9e4f-529a24de383c/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7eede2d26a445be0bc2850b4aae5c570af9ea0b845e235e7359967bb638a4a3 [2022-11-21 16:19:17,848 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:19:17,876 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:19:17,878 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:19:17,880 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:19:17,880 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:19:17,881 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79758909-0206-4eea-9e4f-529a24de383c/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.3.ufo.UNBOUNDED.pals.c [2022-11-21 16:19:20,819 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:19:21,182 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:19:21,186 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79758909-0206-4eea-9e4f-529a24de383c/sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.3.ufo.UNBOUNDED.pals.c [2022-11-21 16:19:21,209 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79758909-0206-4eea-9e4f-529a24de383c/bin/uautomizer-vX5HgA9Q3a/data/54c32e579/81ae7dc5b6c14288a3c210adf255a2fa/FLAG5128f6c3e [2022-11-21 16:19:21,227 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79758909-0206-4eea-9e4f-529a24de383c/bin/uautomizer-vX5HgA9Q3a/data/54c32e579/81ae7dc5b6c14288a3c210adf255a2fa [2022-11-21 16:19:21,231 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:19:21,234 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:19:21,236 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:19:21,237 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:19:21,240 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:19:21,241 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:19:21" (1/1) ... [2022-11-21 16:19:21,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@669e6f78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:19:21, skipping insertion in model container [2022-11-21 16:19:21,242 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:19:21" (1/1) ... [2022-11-21 16:19:21,249 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:19:21,355 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:19:21,868 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_79758909-0206-4eea-9e4f-529a24de383c/sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.3.ufo.UNBOUNDED.pals.c[61125,61138] [2022-11-21 16:19:21,873 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:19:21,898 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:19:22,034 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_79758909-0206-4eea-9e4f-529a24de383c/sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.3.ufo.UNBOUNDED.pals.c[61125,61138] [2022-11-21 16:19:22,051 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:19:22,076 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:19:22,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:19:22 WrapperNode [2022-11-21 16:19:22,076 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:19:22,077 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:19:22,078 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:19:22,078 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:19:22,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:19:22" (1/1) ... [2022-11-21 16:19:22,105 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:19:22" (1/1) ... [2022-11-21 16:19:22,171 INFO L138 Inliner]: procedures = 25, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 1973 [2022-11-21 16:19:22,172 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:19:22,172 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:19:22,172 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:19:22,173 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:19:22,182 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:19:22" (1/1) ... [2022-11-21 16:19:22,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:19:22" (1/1) ... [2022-11-21 16:19:22,202 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:19:22" (1/1) ... [2022-11-21 16:19:22,202 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:19:22" (1/1) ... [2022-11-21 16:19:22,244 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:19:22" (1/1) ... [2022-11-21 16:19:22,266 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:19:22" (1/1) ... [2022-11-21 16:19:22,273 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:19:22" (1/1) ... [2022-11-21 16:19:22,293 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:19:22" (1/1) ... [2022-11-21 16:19:22,317 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:19:22,318 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:19:22,318 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:19:22,318 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:19:22,319 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:19:22" (1/1) ... [2022-11-21 16:19:22,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:19:22,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79758909-0206-4eea-9e4f-529a24de383c/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:19:22,348 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79758909-0206-4eea-9e4f-529a24de383c/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:19:22,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79758909-0206-4eea-9e4f-529a24de383c/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:19:22,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:19:22,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:19:22,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:19:22,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:19:22,662 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:19:22,664 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:19:24,318 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:19:24,330 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:19:24,331 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-21 16:19:24,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:19:24 BoogieIcfgContainer [2022-11-21 16:19:24,333 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:19:24,336 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:19:24,336 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:19:24,339 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:19:24,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:19:21" (1/3) ... [2022-11-21 16:19:24,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a66ba7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:19:24, skipping insertion in model container [2022-11-21 16:19:24,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:19:22" (2/3) ... [2022-11-21 16:19:24,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a66ba7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:19:24, skipping insertion in model container [2022-11-21 16:19:24,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:19:24" (3/3) ... [2022-11-21 16:19:24,342 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.3.ufo.UNBOUNDED.pals.c [2022-11-21 16:19:24,359 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:19:24,359 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 16:19:24,420 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:19:24,426 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;@41cab2ef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:19:24,426 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 16:19:24,433 INFO L276 IsEmpty]: Start isEmpty. Operand has 676 states, 674 states have (on average 1.8664688427299703) internal successors, (1258), 675 states have internal predecessors, (1258), 0 states have call successors, (0), 0 states 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 16:19:24,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-11-21 16:19:24,465 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:19:24,466 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:19:24,467 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:19:24,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:19:24,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1688239117, now seen corresponding path program 1 times [2022-11-21 16:19:24,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:19:24,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015797844] [2022-11-21 16:19:24,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:19:24,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:19:24,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:25,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:19:25,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:19:25,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015797844] [2022-11-21 16:19:25,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015797844] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:19:25,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:19:25,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:19:25,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527897777] [2022-11-21 16:19:25,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:19:25,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 16:19:25,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:19:25,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 16:19:25,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 16:19:25,139 INFO L87 Difference]: Start difference. First operand has 676 states, 674 states have (on average 1.8664688427299703) internal successors, (1258), 675 states have internal predecessors, (1258), 0 states have call successors, (0), 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 76.5) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states 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 16:19:25,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:19:25,211 INFO L93 Difference]: Finished difference Result 803 states and 1487 transitions. [2022-11-21 16:19:25,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 16:19:25,222 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2022-11-21 16:19:25,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:19:25,244 INFO L225 Difference]: With dead ends: 803 [2022-11-21 16:19:25,244 INFO L226 Difference]: Without dead ends: 672 [2022-11-21 16:19:25,250 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 16:19:25,254 INFO L413 NwaCegarLoop]: 1251 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, 1251 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 16:19:25,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1251 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:19:25,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2022-11-21 16:19:25,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 672. [2022-11-21 16:19:25,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 671 states have (on average 1.864381520119225) internal successors, (1251), 671 states have internal predecessors, (1251), 0 states have call successors, (0), 0 states 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 16:19:25,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 1251 transitions. [2022-11-21 16:19:25,350 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 1251 transitions. Word has length 153 [2022-11-21 16:19:25,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:19:25,351 INFO L495 AbstractCegarLoop]: Abstraction has 672 states and 1251 transitions. [2022-11-21 16:19:25,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states 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 16:19:25,352 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 1251 transitions. [2022-11-21 16:19:25,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-11-21 16:19:25,358 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:19:25,358 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:19:25,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:19:25,359 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:19:25,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:19:25,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1178766027, now seen corresponding path program 1 times [2022-11-21 16:19:25,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:19:25,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736570059] [2022-11-21 16:19:25,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:19:25,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:19:25,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:25,802 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 16:19:25,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:19:25,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736570059] [2022-11-21 16:19:25,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736570059] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:19:25,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:19:25,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:19:25,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892796935] [2022-11-21 16:19:25,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:19:25,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:19:25,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:19:25,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:19:25,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:19:25,807 INFO L87 Difference]: Start difference. First operand 672 states and 1251 transitions. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states 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 16:19:25,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:19:25,942 INFO L93 Difference]: Finished difference Result 802 states and 1480 transitions. [2022-11-21 16:19:25,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:19:25,943 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2022-11-21 16:19:25,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:19:25,948 INFO L225 Difference]: With dead ends: 802 [2022-11-21 16:19:25,948 INFO L226 Difference]: Without dead ends: 672 [2022-11-21 16:19:25,949 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 16:19:25,951 INFO L413 NwaCegarLoop]: 1249 mSDtfsCounter, 3 mSDsluCounter, 3684 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 4933 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:19:25,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 4933 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:19:25,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2022-11-21 16:19:25,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 672. [2022-11-21 16:19:25,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 671 states have (on average 1.774962742175857) internal successors, (1191), 671 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states 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 16:19:25,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 1191 transitions. [2022-11-21 16:19:25,978 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 1191 transitions. Word has length 153 [2022-11-21 16:19:25,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:19:25,979 INFO L495 AbstractCegarLoop]: Abstraction has 672 states and 1191 transitions. [2022-11-21 16:19:25,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states 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 16:19:25,979 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 1191 transitions. [2022-11-21 16:19:25,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-11-21 16:19:25,983 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:19:25,983 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:19:25,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 16:19:25,984 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:19:25,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:19:25,985 INFO L85 PathProgramCache]: Analyzing trace with hash 758594002, now seen corresponding path program 1 times [2022-11-21 16:19:25,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:19:25,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958419143] [2022-11-21 16:19:25,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:19:25,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:19:26,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:26,236 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 16:19:26,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:19:26,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958419143] [2022-11-21 16:19:26,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958419143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:19:26,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:19:26,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:19:26,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868955905] [2022-11-21 16:19:26,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:19:26,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:19:26,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:19:26,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:19:26,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:19:26,240 INFO L87 Difference]: Start difference. First operand 672 states and 1191 transitions. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states 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 16:19:26,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:19:26,300 INFO L93 Difference]: Finished difference Result 911 states and 1616 transitions. [2022-11-21 16:19:26,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:19:26,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 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 212 [2022-11-21 16:19:26,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:19:26,305 INFO L225 Difference]: With dead ends: 911 [2022-11-21 16:19:26,306 INFO L226 Difference]: Without dead ends: 785 [2022-11-21 16:19:26,307 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 16:19:26,308 INFO L413 NwaCegarLoop]: 1185 mSDtfsCounter, 191 mSDsluCounter, 1125 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 2310 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:19:26,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 2310 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:19:26,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2022-11-21 16:19:26,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 782. [2022-11-21 16:19:26,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 782 states, 781 states have (on average 1.770806658130602) internal successors, (1383), 781 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states 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 16:19:26,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 1383 transitions. [2022-11-21 16:19:26,337 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 1383 transitions. Word has length 212 [2022-11-21 16:19:26,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:19:26,338 INFO L495 AbstractCegarLoop]: Abstraction has 782 states and 1383 transitions. [2022-11-21 16:19:26,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states 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 16:19:26,339 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 1383 transitions. [2022-11-21 16:19:26,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-11-21 16:19:26,342 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:19:26,342 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:19:26,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 16:19:26,343 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:19:26,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:19:26,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1780000224, now seen corresponding path program 1 times [2022-11-21 16:19:26,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:19:26,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220983556] [2022-11-21 16:19:26,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:19:26,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:19:26,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:26,584 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 16:19:26,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:19:26,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220983556] [2022-11-21 16:19:26,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220983556] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:19:26,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:19:26,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:19:26,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770272201] [2022-11-21 16:19:26,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:19:26,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:19:26,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:19:26,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:19:26,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:19:26,587 INFO L87 Difference]: Start difference. First operand 782 states and 1383 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states 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 16:19:26,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:19:26,647 INFO L93 Difference]: Finished difference Result 1232 states and 2175 transitions. [2022-11-21 16:19:26,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:19:26,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 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 216 [2022-11-21 16:19:26,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:19:26,655 INFO L225 Difference]: With dead ends: 1232 [2022-11-21 16:19:26,655 INFO L226 Difference]: Without dead ends: 996 [2022-11-21 16:19:26,660 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 16:19:26,669 INFO L413 NwaCegarLoop]: 1188 mSDtfsCounter, 191 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 2322 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:19:26,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 2322 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:19:26,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2022-11-21 16:19:26,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 992. [2022-11-21 16:19:26,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 992 states, 991 states have (on average 1.7669021190716447) internal successors, (1751), 991 states have internal predecessors, (1751), 0 states have call successors, (0), 0 states 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 16:19:26,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 992 states to 992 states and 1751 transitions. [2022-11-21 16:19:26,717 INFO L78 Accepts]: Start accepts. Automaton has 992 states and 1751 transitions. Word has length 216 [2022-11-21 16:19:26,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:19:26,719 INFO L495 AbstractCegarLoop]: Abstraction has 992 states and 1751 transitions. [2022-11-21 16:19:26,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states 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 16:19:26,720 INFO L276 IsEmpty]: Start isEmpty. Operand 992 states and 1751 transitions. [2022-11-21 16:19:26,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-11-21 16:19:26,724 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:19:26,725 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:19:26,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 16:19:26,725 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:19:26,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:19:26,727 INFO L85 PathProgramCache]: Analyzing trace with hash 557531696, now seen corresponding path program 1 times [2022-11-21 16:19:26,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:19:26,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86022072] [2022-11-21 16:19:26,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:19:26,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:19:26,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:27,025 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 16:19:27,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:19:27,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86022072] [2022-11-21 16:19:27,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86022072] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:19:27,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:19:27,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:19:27,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792098143] [2022-11-21 16:19:27,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:19:27,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:19:27,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:19:27,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:19:27,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:19:27,030 INFO L87 Difference]: Start difference. First operand 992 states and 1751 transitions. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states 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 16:19:27,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:19:27,097 INFO L93 Difference]: Finished difference Result 1840 states and 3237 transitions. [2022-11-21 16:19:27,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:19:27,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 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 220 [2022-11-21 16:19:27,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:19:27,103 INFO L225 Difference]: With dead ends: 1840 [2022-11-21 16:19:27,103 INFO L226 Difference]: Without dead ends: 1394 [2022-11-21 16:19:27,105 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 16:19:27,110 INFO L413 NwaCegarLoop]: 1188 mSDtfsCounter, 183 mSDsluCounter, 1135 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 2323 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:19:27,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 2323 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:19:27,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1394 states. [2022-11-21 16:19:27,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1394 to 1388. [2022-11-21 16:19:27,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1388 states, 1387 states have (on average 1.7584715212689257) internal successors, (2439), 1387 states have internal predecessors, (2439), 0 states have call successors, (0), 0 states 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 16:19:27,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 2439 transitions. [2022-11-21 16:19:27,161 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 2439 transitions. Word has length 220 [2022-11-21 16:19:27,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:19:27,163 INFO L495 AbstractCegarLoop]: Abstraction has 1388 states and 2439 transitions. [2022-11-21 16:19:27,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 0 states 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 16:19:27,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 2439 transitions. [2022-11-21 16:19:27,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-11-21 16:19:27,170 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:19:27,171 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:19:27,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 16:19:27,171 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:19:27,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:19:27,173 INFO L85 PathProgramCache]: Analyzing trace with hash -33620994, now seen corresponding path program 1 times [2022-11-21 16:19:27,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:19:27,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334364321] [2022-11-21 16:19:27,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:19:27,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:19:27,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:27,486 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 16:19:27,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:19:27,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334364321] [2022-11-21 16:19:27,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334364321] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:19:27,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:19:27,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:19:27,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104378749] [2022-11-21 16:19:27,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:19:27,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:19:27,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:19:27,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:19:27,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:19:27,489 INFO L87 Difference]: Start difference. First operand 1388 states and 2439 transitions. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states 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 16:19:27,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:19:27,571 INFO L93 Difference]: Finished difference Result 2984 states and 5217 transitions. [2022-11-21 16:19:27,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:19:27,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 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 224 [2022-11-21 16:19:27,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:19:27,579 INFO L225 Difference]: With dead ends: 2984 [2022-11-21 16:19:27,580 INFO L226 Difference]: Without dead ends: 2142 [2022-11-21 16:19:27,581 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 16:19:27,583 INFO L413 NwaCegarLoop]: 1188 mSDtfsCounter, 175 mSDsluCounter, 1136 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 2324 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:19:27,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 2324 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:19:27,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2022-11-21 16:19:27,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 2132. [2022-11-21 16:19:27,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2132 states, 2131 states have (on average 1.7451900516189582) internal successors, (3719), 2131 states have internal predecessors, (3719), 0 states have call successors, (0), 0 states 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 16:19:27,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2132 states to 2132 states and 3719 transitions. [2022-11-21 16:19:27,665 INFO L78 Accepts]: Start accepts. Automaton has 2132 states and 3719 transitions. Word has length 224 [2022-11-21 16:19:27,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:19:27,666 INFO L495 AbstractCegarLoop]: Abstraction has 2132 states and 3719 transitions. [2022-11-21 16:19:27,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states 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 16:19:27,666 INFO L276 IsEmpty]: Start isEmpty. Operand 2132 states and 3719 transitions. [2022-11-21 16:19:27,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-11-21 16:19:27,670 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:19:27,671 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:19:27,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 16:19:27,671 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:19:27,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:19:27,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1276458228, now seen corresponding path program 1 times [2022-11-21 16:19:27,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:19:27,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715551675] [2022-11-21 16:19:27,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:19:27,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:19:27,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:27,918 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 16:19:27,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:19:27,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715551675] [2022-11-21 16:19:27,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715551675] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:19:27,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:19:27,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:19:27,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610886056] [2022-11-21 16:19:27,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:19:27,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:19:27,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:19:27,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:19:27,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:19:27,921 INFO L87 Difference]: Start difference. First operand 2132 states and 3719 transitions. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states 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 16:19:28,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:19:28,097 INFO L93 Difference]: Finished difference Result 5128 states and 8889 transitions. [2022-11-21 16:19:28,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:19:28,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 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 228 [2022-11-21 16:19:28,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:19:28,111 INFO L225 Difference]: With dead ends: 5128 [2022-11-21 16:19:28,111 INFO L226 Difference]: Without dead ends: 3542 [2022-11-21 16:19:28,116 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 16:19:28,117 INFO L413 NwaCegarLoop]: 1188 mSDtfsCounter, 167 mSDsluCounter, 1137 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 2325 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:19:28,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 2325 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:19:28,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3542 states. [2022-11-21 16:19:28,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3542 to 3524. [2022-11-21 16:19:28,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3524 states, 3523 states have (on average 1.727788816349702) internal successors, (6087), 3523 states have internal predecessors, (6087), 0 states have call successors, (0), 0 states 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 16:19:28,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3524 states to 3524 states and 6087 transitions. [2022-11-21 16:19:28,267 INFO L78 Accepts]: Start accepts. Automaton has 3524 states and 6087 transitions. Word has length 228 [2022-11-21 16:19:28,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:19:28,268 INFO L495 AbstractCegarLoop]: Abstraction has 3524 states and 6087 transitions. [2022-11-21 16:19:28,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states 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 16:19:28,268 INFO L276 IsEmpty]: Start isEmpty. Operand 3524 states and 6087 transitions. [2022-11-21 16:19:28,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-11-21 16:19:28,273 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:19:28,273 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:19:28,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 16:19:28,274 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:19:28,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:19:28,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1364054182, now seen corresponding path program 1 times [2022-11-21 16:19:28,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:19:28,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249511402] [2022-11-21 16:19:28,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:19:28,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:19:28,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:28,747 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 16:19:28,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:19:28,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249511402] [2022-11-21 16:19:28,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249511402] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:19:28,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:19:28,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 16:19:28,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833554131] [2022-11-21 16:19:28,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:19:28,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 16:19:28,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:19:28,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 16:19:28,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:19:28,750 INFO L87 Difference]: Start difference. First operand 3524 states and 6087 transitions. Second operand has 7 states, 7 states have (on average 33.142857142857146) internal successors, (232), 7 states have internal predecessors, (232), 0 states have call successors, (0), 0 states 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 16:19:29,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:19:29,886 INFO L93 Difference]: Finished difference Result 20680 states and 35953 transitions. [2022-11-21 16:19:29,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 16:19:29,887 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 33.142857142857146) internal successors, (232), 7 states have internal predecessors, (232), 0 states have call successors, (0), 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 232 [2022-11-21 16:19:29,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:19:29,963 INFO L225 Difference]: With dead ends: 20680 [2022-11-21 16:19:29,963 INFO L226 Difference]: Without dead ends: 17702 [2022-11-21 16:19:29,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-11-21 16:19:29,971 INFO L413 NwaCegarLoop]: 1191 mSDtfsCounter, 2394 mSDsluCounter, 9184 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2394 SdHoareTripleChecker+Valid, 10375 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 16:19:29,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2394 Valid, 10375 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 16:19:29,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17702 states. [2022-11-21 16:19:30,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17702 to 6378. [2022-11-21 16:19:30,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6378 states, 6377 states have (on average 1.7230672730123884) internal successors, (10988), 6377 states have internal predecessors, (10988), 0 states have call successors, (0), 0 states 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 16:19:30,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6378 states to 6378 states and 10988 transitions. [2022-11-21 16:19:30,522 INFO L78 Accepts]: Start accepts. Automaton has 6378 states and 10988 transitions. Word has length 232 [2022-11-21 16:19:30,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:19:30,523 INFO L495 AbstractCegarLoop]: Abstraction has 6378 states and 10988 transitions. [2022-11-21 16:19:30,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.142857142857146) internal successors, (232), 7 states have internal predecessors, (232), 0 states have call successors, (0), 0 states 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 16:19:30,524 INFO L276 IsEmpty]: Start isEmpty. Operand 6378 states and 10988 transitions. [2022-11-21 16:19:30,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-11-21 16:19:30,529 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:19:30,529 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:19:30,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 16:19:30,531 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:19:30,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:19:30,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1602386216, now seen corresponding path program 1 times [2022-11-21 16:19:30,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:19:30,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674695712] [2022-11-21 16:19:30,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:19:30,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:19:30,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:30,903 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 16:19:30,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:19:30,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674695712] [2022-11-21 16:19:30,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674695712] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:19:30,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:19:30,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:19:30,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402774694] [2022-11-21 16:19:30,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:19:30,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:19:30,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:19:30,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:19:30,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:19:30,906 INFO L87 Difference]: Start difference. First operand 6378 states and 10988 transitions. Second operand has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 0 states have call successors, (0), 0 states 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 16:19:31,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:19:31,698 INFO L93 Difference]: Finished difference Result 18462 states and 31956 transitions. [2022-11-21 16:19:31,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:19:31,698 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 0 states have call successors, (0), 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 233 [2022-11-21 16:19:31,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:19:31,727 INFO L225 Difference]: With dead ends: 18462 [2022-11-21 16:19:31,727 INFO L226 Difference]: Without dead ends: 12630 [2022-11-21 16:19:31,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:19:31,739 INFO L413 NwaCegarLoop]: 1193 mSDtfsCounter, 639 mSDsluCounter, 2370 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 3563 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:19:31,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [639 Valid, 3563 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:19:31,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12630 states. [2022-11-21 16:19:32,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12630 to 9471. [2022-11-21 16:19:32,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9471 states, 9470 states have (on average 1.725026399155227) internal successors, (16336), 9470 states have internal predecessors, (16336), 0 states have call successors, (0), 0 states 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 16:19:32,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9471 states to 9471 states and 16336 transitions. [2022-11-21 16:19:32,370 INFO L78 Accepts]: Start accepts. Automaton has 9471 states and 16336 transitions. Word has length 233 [2022-11-21 16:19:32,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:19:32,370 INFO L495 AbstractCegarLoop]: Abstraction has 9471 states and 16336 transitions. [2022-11-21 16:19:32,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 0 states have call successors, (0), 0 states 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 16:19:32,371 INFO L276 IsEmpty]: Start isEmpty. Operand 9471 states and 16336 transitions. [2022-11-21 16:19:32,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-11-21 16:19:32,381 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:19:32,381 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:19:32,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 16:19:32,381 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:19:32,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:19:32,382 INFO L85 PathProgramCache]: Analyzing trace with hash -231740335, now seen corresponding path program 1 times [2022-11-21 16:19:32,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:19:32,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986552554] [2022-11-21 16:19:32,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:19:32,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:19:32,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:32,698 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 16:19:32,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:19:32,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986552554] [2022-11-21 16:19:32,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986552554] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:19:32,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:19:32,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:19:32,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013210097] [2022-11-21 16:19:32,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:19:32,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:19:32,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:19:32,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:19:32,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:19:32,705 INFO L87 Difference]: Start difference. First operand 9471 states and 16336 transitions. Second operand has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 0 states have call successors, (0), 0 states 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 16:19:33,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:19:33,550 INFO L93 Difference]: Finished difference Result 27718 states and 47918 transitions. [2022-11-21 16:19:33,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:19:33,551 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 0 states have call successors, (0), 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 234 [2022-11-21 16:19:33,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:19:33,586 INFO L225 Difference]: With dead ends: 27718 [2022-11-21 16:19:33,587 INFO L226 Difference]: Without dead ends: 18793 [2022-11-21 16:19:33,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:19:33,599 INFO L413 NwaCegarLoop]: 1180 mSDtfsCounter, 639 mSDsluCounter, 2534 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 3714 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:19:33,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [639 Valid, 3714 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 16:19:33,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18793 states. [2022-11-21 16:19:34,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18793 to 14084. [2022-11-21 16:19:34,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14084 states, 14083 states have (on average 1.722431300149116) internal successors, (24257), 14083 states have internal predecessors, (24257), 0 states have call successors, (0), 0 states 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 16:19:34,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14084 states to 14084 states and 24257 transitions. [2022-11-21 16:19:34,571 INFO L78 Accepts]: Start accepts. Automaton has 14084 states and 24257 transitions. Word has length 234 [2022-11-21 16:19:34,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:19:34,572 INFO L495 AbstractCegarLoop]: Abstraction has 14084 states and 24257 transitions. [2022-11-21 16:19:34,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 0 states have call successors, (0), 0 states 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 16:19:34,573 INFO L276 IsEmpty]: Start isEmpty. Operand 14084 states and 24257 transitions. [2022-11-21 16:19:34,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-11-21 16:19:34,583 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:19:34,584 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:19:34,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 16:19:34,584 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:19:34,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:19:34,585 INFO L85 PathProgramCache]: Analyzing trace with hash -577576815, now seen corresponding path program 1 times [2022-11-21 16:19:34,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:19:34,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511524399] [2022-11-21 16:19:34,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:19:34,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:19:34,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:34,810 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 16:19:34,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:19:34,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511524399] [2022-11-21 16:19:34,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511524399] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:19:34,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:19:34,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:19:34,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691432479] [2022-11-21 16:19:34,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:19:34,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:19:34,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:19:34,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:19:34,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:19:34,813 INFO L87 Difference]: Start difference. First operand 14084 states and 24257 transitions. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states 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 16:19:35,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:19:35,860 INFO L93 Difference]: Finished difference Result 31453 states and 54349 transitions. [2022-11-21 16:19:35,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:19:35,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 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 235 [2022-11-21 16:19:35,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:19:35,903 INFO L225 Difference]: With dead ends: 31453 [2022-11-21 16:19:35,903 INFO L226 Difference]: Without dead ends: 21899 [2022-11-21 16:19:35,918 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 16:19:35,918 INFO L413 NwaCegarLoop]: 1368 mSDtfsCounter, 198 mSDsluCounter, 1166 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 2534 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:19:35,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 2534 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:19:36,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21899 states. [2022-11-21 16:19:36,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21899 to 21897. [2022-11-21 16:19:36,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21897 states, 21896 states have (on average 1.7176196565582755) internal successors, (37609), 21896 states have internal predecessors, (37609), 0 states have call successors, (0), 0 states 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 16:19:37,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21897 states to 21897 states and 37609 transitions. [2022-11-21 16:19:37,024 INFO L78 Accepts]: Start accepts. Automaton has 21897 states and 37609 transitions. Word has length 235 [2022-11-21 16:19:37,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:19:37,025 INFO L495 AbstractCegarLoop]: Abstraction has 21897 states and 37609 transitions. [2022-11-21 16:19:37,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states 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 16:19:37,025 INFO L276 IsEmpty]: Start isEmpty. Operand 21897 states and 37609 transitions. [2022-11-21 16:19:37,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-11-21 16:19:37,031 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:19:37,031 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:19:37,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 16:19:37,031 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:19:37,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:19:37,032 INFO L85 PathProgramCache]: Analyzing trace with hash -2006185654, now seen corresponding path program 1 times [2022-11-21 16:19:37,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:19:37,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444993096] [2022-11-21 16:19:37,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:19:37,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:19:37,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:37,201 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 16:19:37,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:19:37,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444993096] [2022-11-21 16:19:37,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444993096] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:19:37,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:19:37,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:19:37,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289604414] [2022-11-21 16:19:37,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:19:37,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:19:37,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:19:37,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:19:37,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:19:37,204 INFO L87 Difference]: Start difference. First operand 21897 states and 37609 transitions. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states 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 16:19:39,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:19:39,061 INFO L93 Difference]: Finished difference Result 48798 states and 83802 transitions. [2022-11-21 16:19:39,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:19:39,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 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 235 [2022-11-21 16:19:39,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:19:39,141 INFO L225 Difference]: With dead ends: 48798 [2022-11-21 16:19:39,142 INFO L226 Difference]: Without dead ends: 33898 [2022-11-21 16:19:39,162 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 16:19:39,162 INFO L413 NwaCegarLoop]: 1364 mSDtfsCounter, 190 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 2531 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:19:39,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 2531 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:19:39,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33898 states. [2022-11-21 16:19:40,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33898 to 33896. [2022-11-21 16:19:40,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33896 states, 33895 states have (on average 1.7076854993361852) internal successors, (57882), 33895 states have internal predecessors, (57882), 0 states have call successors, (0), 0 states 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 16:19:40,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33896 states to 33896 states and 57882 transitions. [2022-11-21 16:19:40,839 INFO L78 Accepts]: Start accepts. Automaton has 33896 states and 57882 transitions. Word has length 235 [2022-11-21 16:19:40,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:19:40,839 INFO L495 AbstractCegarLoop]: Abstraction has 33896 states and 57882 transitions. [2022-11-21 16:19:40,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states 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 16:19:40,840 INFO L276 IsEmpty]: Start isEmpty. Operand 33896 states and 57882 transitions. [2022-11-21 16:19:40,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-11-21 16:19:40,845 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:19:40,845 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:19:40,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 16:19:40,846 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:19:40,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:19:40,846 INFO L85 PathProgramCache]: Analyzing trace with hash 438137210, now seen corresponding path program 1 times [2022-11-21 16:19:40,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:19:40,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862540659] [2022-11-21 16:19:40,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:19:40,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:19:40,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:41,204 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 16:19:41,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:19:41,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862540659] [2022-11-21 16:19:41,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862540659] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:19:41,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:19:41,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:19:41,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073209549] [2022-11-21 16:19:41,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:19:41,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:19:41,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:19:41,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:19:41,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:19:41,207 INFO L87 Difference]: Start difference. First operand 33896 states and 57882 transitions. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states 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 16:19:43,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:19:43,060 INFO L93 Difference]: Finished difference Result 66457 states and 113583 transitions. [2022-11-21 16:19:43,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:19:43,061 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 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 235 [2022-11-21 16:19:43,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:19:43,180 INFO L225 Difference]: With dead ends: 66457 [2022-11-21 16:19:43,181 INFO L226 Difference]: Without dead ends: 48292 [2022-11-21 16:19:43,203 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 16:19:43,204 INFO L413 NwaCegarLoop]: 1317 mSDtfsCounter, 174 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 2486 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:19:43,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 2486 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:19:43,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48292 states. [2022-11-21 16:19:45,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48292 to 48290. [2022-11-21 16:19:45,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48290 states, 48289 states have (on average 1.6992482760048873) internal successors, (82055), 48289 states have internal predecessors, (82055), 0 states have call successors, (0), 0 states 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 16:19:45,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48290 states to 48290 states and 82055 transitions. [2022-11-21 16:19:45,518 INFO L78 Accepts]: Start accepts. Automaton has 48290 states and 82055 transitions. Word has length 235 [2022-11-21 16:19:45,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:19:45,518 INFO L495 AbstractCegarLoop]: Abstraction has 48290 states and 82055 transitions. [2022-11-21 16:19:45,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states 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 16:19:45,519 INFO L276 IsEmpty]: Start isEmpty. Operand 48290 states and 82055 transitions. [2022-11-21 16:19:45,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-11-21 16:19:45,524 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:19:45,524 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:19:45,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 16:19:45,525 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:19:45,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:19:45,526 INFO L85 PathProgramCache]: Analyzing trace with hash -241887629, now seen corresponding path program 1 times [2022-11-21 16:19:45,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:19:45,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076990311] [2022-11-21 16:19:45,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:19:45,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:19:45,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:45,687 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 16:19:45,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:19:45,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076990311] [2022-11-21 16:19:45,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076990311] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:19:45,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:19:45,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:19:45,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070382759] [2022-11-21 16:19:45,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:19:45,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:19:45,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:19:45,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:19:45,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:19:45,690 INFO L87 Difference]: Start difference. First operand 48290 states and 82055 transitions. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states 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 16:19:48,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:19:48,240 INFO L93 Difference]: Finished difference Result 94501 states and 160759 transitions. [2022-11-21 16:19:48,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:19:48,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 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 235 [2022-11-21 16:19:48,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:19:48,372 INFO L225 Difference]: With dead ends: 94501 [2022-11-21 16:19:48,372 INFO L226 Difference]: Without dead ends: 68556 [2022-11-21 16:19:48,415 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 16:19:48,416 INFO L413 NwaCegarLoop]: 1305 mSDtfsCounter, 166 mSDsluCounter, 1170 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 2475 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:19:48,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 2475 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:19:48,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68556 states. [2022-11-21 16:19:51,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68556 to 68554. [2022-11-21 16:19:51,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68554 states, 68553 states have (on average 1.6902396685775969) internal successors, (115871), 68553 states have internal predecessors, (115871), 0 states have call successors, (0), 0 states 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 16:19:51,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68554 states to 68554 states and 115871 transitions. [2022-11-21 16:19:51,493 INFO L78 Accepts]: Start accepts. Automaton has 68554 states and 115871 transitions. Word has length 235 [2022-11-21 16:19:51,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:19:51,493 INFO L495 AbstractCegarLoop]: Abstraction has 68554 states and 115871 transitions. [2022-11-21 16:19:51,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states 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 16:19:51,493 INFO L276 IsEmpty]: Start isEmpty. Operand 68554 states and 115871 transitions. [2022-11-21 16:19:51,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-11-21 16:19:51,498 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:19:51,498 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:19:51,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 16:19:51,499 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:19:51,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:19:51,499 INFO L85 PathProgramCache]: Analyzing trace with hash -522386641, now seen corresponding path program 1 times [2022-11-21 16:19:51,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:19:51,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396334907] [2022-11-21 16:19:51,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:19:51,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:19:51,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:51,792 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 16:19:51,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:19:51,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396334907] [2022-11-21 16:19:51,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396334907] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:19:51,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:19:51,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 16:19:51,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629003500] [2022-11-21 16:19:51,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:19:51,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:19:51,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:19:51,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:19:51,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:19:51,795 INFO L87 Difference]: Start difference. First operand 68554 states and 115871 transitions. Second operand has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states 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 16:19:56,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:19:56,821 INFO L93 Difference]: Finished difference Result 209049 states and 354920 transitions. [2022-11-21 16:19:56,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:19:56,821 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 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 235 [2022-11-21 16:19:56,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:19:57,198 INFO L225 Difference]: With dead ends: 209049 [2022-11-21 16:19:57,198 INFO L226 Difference]: Without dead ends: 141109 [2022-11-21 16:19:57,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:19:57,254 INFO L413 NwaCegarLoop]: 1303 mSDtfsCounter, 637 mSDsluCounter, 2536 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 3839 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 16:19:57,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [637 Valid, 3839 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 16:19:57,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141109 states. [2022-11-21 16:20:02,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141109 to 104394. [2022-11-21 16:20:02,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104394 states, 104393 states have (on average 1.68820706369201) internal successors, (176237), 104393 states have internal predecessors, (176237), 0 states have call successors, (0), 0 states 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 16:20:02,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104394 states to 104394 states and 176237 transitions. [2022-11-21 16:20:02,375 INFO L78 Accepts]: Start accepts. Automaton has 104394 states and 176237 transitions. Word has length 235 [2022-11-21 16:20:02,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:20:02,376 INFO L495 AbstractCegarLoop]: Abstraction has 104394 states and 176237 transitions. [2022-11-21 16:20:02,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states 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 16:20:02,376 INFO L276 IsEmpty]: Start isEmpty. Operand 104394 states and 176237 transitions. [2022-11-21 16:20:02,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-11-21 16:20:02,382 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:20:02,382 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:20:02,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-21 16:20:02,383 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:20:02,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:20:02,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1678125695, now seen corresponding path program 1 times [2022-11-21 16:20:02,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:20:02,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732416519] [2022-11-21 16:20:02,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:20:02,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:20:02,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:02,535 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 16:20:02,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:20:02,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732416519] [2022-11-21 16:20:02,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732416519] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:20:02,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:20:02,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:20:02,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971526199] [2022-11-21 16:20:02,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:20:02,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:20:02,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:20:02,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:20:02,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:20:02,540 INFO L87 Difference]: Start difference. First operand 104394 states and 176237 transitions. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)