./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem13_label44.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_3ee45b8a-afc2-4a77-b1c6-a407f43cd1ff/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee45b8a-afc2-4a77-b1c6-a407f43cd1ff/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_3ee45b8a-afc2-4a77-b1c6-a407f43cd1ff/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee45b8a-afc2-4a77-b1c6-a407f43cd1ff/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem13_label44.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee45b8a-afc2-4a77-b1c6-a407f43cd1ff/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_3ee45b8a-afc2-4a77-b1c6-a407f43cd1ff/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 4b7f120460c5e90aafe001aa1b39212c5555914a66c1599385ca623bf4c03471 --- 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 16:52:17,266 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:52:17,268 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:52:17,309 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:52:17,310 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:52:17,312 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:52:17,313 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:52:17,315 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:52:17,316 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:52:17,317 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:52:17,318 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:52:17,319 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:52:17,320 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:52:17,321 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:52:17,322 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:52:17,323 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:52:17,324 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:52:17,325 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:52:17,327 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:52:17,328 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:52:17,330 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:52:17,335 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:52:17,336 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:52:17,337 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:52:17,341 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:52:17,341 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:52:17,341 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:52:17,342 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:52:17,348 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:52:17,349 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:52:17,349 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:52:17,350 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:52:17,351 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:52:17,352 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:52:17,353 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:52:17,353 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:52:17,354 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:52:17,354 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:52:17,354 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:52:17,355 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:52:17,356 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:52:17,357 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee45b8a-afc2-4a77-b1c6-a407f43cd1ff/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 16:52:17,380 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:52:17,380 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:52:17,381 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:52:17,381 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:52:17,382 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:52:17,382 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:52:17,383 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:52:17,383 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:52:17,383 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:52:17,383 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:52:17,384 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:52:17,384 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:52:17,384 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:52:17,384 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:52:17,385 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:52:17,385 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:52:17,385 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:52:17,385 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:52:17,386 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:52:17,386 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:52:17,386 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:52:17,386 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:52:17,386 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:52:17,387 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:52:17,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:52:17,387 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:52:17,387 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:52:17,388 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:52:17,388 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:52:17,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:52:17,388 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:52:17,388 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:52:17,389 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:52:17,389 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_3ee45b8a-afc2-4a77-b1c6-a407f43cd1ff/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee45b8a-afc2-4a77-b1c6-a407f43cd1ff/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b7f120460c5e90aafe001aa1b39212c5555914a66c1599385ca623bf4c03471 [2022-11-21 16:52:17,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:52:17,662 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:52:17,665 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:52:17,666 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:52:17,667 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:52:17,668 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee45b8a-afc2-4a77-b1c6-a407f43cd1ff/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/eca-rers2012/Problem13_label44.c [2022-11-21 16:52:20,783 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:52:21,437 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:52:21,437 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee45b8a-afc2-4a77-b1c6-a407f43cd1ff/sv-benchmarks/c/eca-rers2012/Problem13_label44.c [2022-11-21 16:52:21,482 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee45b8a-afc2-4a77-b1c6-a407f43cd1ff/bin/uautomizer-vX5HgA9Q3a/data/64845fc92/efba3f598df949fcb9b7406f3028a866/FLAG9af9175bb [2022-11-21 16:52:21,501 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee45b8a-afc2-4a77-b1c6-a407f43cd1ff/bin/uautomizer-vX5HgA9Q3a/data/64845fc92/efba3f598df949fcb9b7406f3028a866 [2022-11-21 16:52:21,505 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:52:21,507 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:52:21,509 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:52:21,509 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:52:21,513 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:52:21,513 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:52:21" (1/1) ... [2022-11-21 16:52:21,514 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74c01d5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:52:21, skipping insertion in model container [2022-11-21 16:52:21,515 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:52:21" (1/1) ... [2022-11-21 16:52:21,522 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:52:21,708 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:52:21,984 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_3ee45b8a-afc2-4a77-b1c6-a407f43cd1ff/sv-benchmarks/c/eca-rers2012/Problem13_label44.c[4499,4512] [2022-11-21 16:52:23,184 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:52:23,196 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:52:23,216 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_3ee45b8a-afc2-4a77-b1c6-a407f43cd1ff/sv-benchmarks/c/eca-rers2012/Problem13_label44.c[4499,4512] [2022-11-21 16:52:24,014 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:52:24,044 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:52:24,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:52:24 WrapperNode [2022-11-21 16:52:24,045 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:52:24,047 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:52:24,047 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:52:24,048 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:52:24,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:52:24" (1/1) ... [2022-11-21 16:52:24,198 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:52:24" (1/1) ... [2022-11-21 16:52:24,732 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5583 [2022-11-21 16:52:24,733 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:52:24,734 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:52:24,734 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:52:24,734 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:52:24,751 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:52:24" (1/1) ... [2022-11-21 16:52:24,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:52:24" (1/1) ... [2022-11-21 16:52:24,876 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:52:24" (1/1) ... [2022-11-21 16:52:24,877 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:52:24" (1/1) ... [2022-11-21 16:52:25,481 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:52:24" (1/1) ... [2022-11-21 16:52:25,542 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:52:24" (1/1) ... [2022-11-21 16:52:25,692 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:52:24" (1/1) ... [2022-11-21 16:52:25,727 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:52:24" (1/1) ... [2022-11-21 16:52:25,945 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:52:25,963 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:52:25,964 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:52:25,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:52:25,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:52:24" (1/1) ... [2022-11-21 16:52:25,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:52:26,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee45b8a-afc2-4a77-b1c6-a407f43cd1ff/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:52:26,048 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee45b8a-afc2-4a77-b1c6-a407f43cd1ff/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:52:26,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee45b8a-afc2-4a77-b1c6-a407f43cd1ff/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:52:26,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:52:26,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:52:26,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:52:26,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:52:26,319 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:52:26,321 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:52:33,643 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:52:33,682 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:52:33,683 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-21 16:52:33,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:52:33 BoogieIcfgContainer [2022-11-21 16:52:33,687 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:52:33,691 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:52:33,691 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:52:33,695 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:52:33,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:52:21" (1/3) ... [2022-11-21 16:52:33,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@699dc9fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:52:33, skipping insertion in model container [2022-11-21 16:52:33,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:52:24" (2/3) ... [2022-11-21 16:52:33,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@699dc9fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:52:33, skipping insertion in model container [2022-11-21 16:52:33,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:52:33" (3/3) ... [2022-11-21 16:52:33,701 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label44.c [2022-11-21 16:52:33,724 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:52:33,724 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 16:52:33,848 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:52:33,857 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;@1c9c3616, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:52:33,858 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 16:52:33,875 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 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 16:52:33,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-21 16:52:33,885 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:52:33,886 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] [2022-11-21 16:52:33,887 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:52:33,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:52:33,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1722039382, now seen corresponding path program 1 times [2022-11-21 16:52:33,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:52:33,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263685077] [2022-11-21 16:52:33,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:52:33,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:52:34,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:52:34,533 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 16:52:34,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:52:34,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263685077] [2022-11-21 16:52:34,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263685077] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:52:34,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:52:34,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:52:34,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760436968] [2022-11-21 16:52:34,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:52:34,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:52:34,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:52:34,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:52:34,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:52:34,588 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 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 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 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 16:52:45,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:52:45,112 INFO L93 Difference]: Finished difference Result 3829 states and 7206 transitions. [2022-11-21 16:52:45,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:52:45,116 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2022-11-21 16:52:45,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:52:45,163 INFO L225 Difference]: With dead ends: 3829 [2022-11-21 16:52:45,163 INFO L226 Difference]: Without dead ends: 2664 [2022-11-21 16:52:45,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:52:45,184 INFO L413 NwaCegarLoop]: 761 mSDtfsCounter, 2733 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 4246 mSolverCounterSat, 1607 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2733 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 5853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1607 IncrementalHoareTripleChecker+Valid, 4246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:52:45,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2733 Valid, 1067 Invalid, 5853 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1607 Valid, 4246 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2022-11-21 16:52:45,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2664 states. [2022-11-21 16:52:45,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2664 to 2663. [2022-11-21 16:52:45,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2663 states, 2662 states have (on average 1.460931630353118) internal successors, (3889), 2662 states have internal predecessors, (3889), 0 states have call successors, (0), 0 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 16:52:45,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2663 states to 2663 states and 3889 transitions. [2022-11-21 16:52:45,400 INFO L78 Accepts]: Start accepts. Automaton has 2663 states and 3889 transitions. Word has length 30 [2022-11-21 16:52:45,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:52:45,401 INFO L495 AbstractCegarLoop]: Abstraction has 2663 states and 3889 transitions. [2022-11-21 16:52:45,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 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 16:52:45,402 INFO L276 IsEmpty]: Start isEmpty. Operand 2663 states and 3889 transitions. [2022-11-21 16:52:45,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-21 16:52:45,411 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:52:45,412 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:52:45,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:52:45,413 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:52:45,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:52:45,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1847697995, now seen corresponding path program 1 times [2022-11-21 16:52:45,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:52:45,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620955814] [2022-11-21 16:52:45,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:52:45,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:52:45,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:52:45,888 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:52:45,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:52:45,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620955814] [2022-11-21 16:52:45,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620955814] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:52:45,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:52:45,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:52:45,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409169136] [2022-11-21 16:52:45,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:52:45,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:52:45,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:52:45,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:52:45,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:52:45,896 INFO L87 Difference]: Start difference. First operand 2663 states and 3889 transitions. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 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 16:52:56,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:52:56,598 INFO L93 Difference]: Finished difference Result 7866 states and 12670 transitions. [2022-11-21 16:52:56,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:52:56,607 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 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 155 [2022-11-21 16:52:56,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:52:56,632 INFO L225 Difference]: With dead ends: 7866 [2022-11-21 16:52:56,632 INFO L226 Difference]: Without dead ends: 5992 [2022-11-21 16:52:56,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:52:56,637 INFO L413 NwaCegarLoop]: 895 mSDtfsCounter, 1651 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 6335 mSolverCounterSat, 830 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1651 SdHoareTripleChecker+Valid, 1193 SdHoareTripleChecker+Invalid, 7165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 830 IncrementalHoareTripleChecker+Valid, 6335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2022-11-21 16:52:56,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1651 Valid, 1193 Invalid, 7165 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [830 Valid, 6335 Invalid, 0 Unknown, 0 Unchecked, 10.4s Time] [2022-11-21 16:52:56,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5992 states. [2022-11-21 16:52:56,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5992 to 5859. [2022-11-21 16:52:56,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5859 states, 5858 states have (on average 1.4453738477296005) internal successors, (8467), 5858 states have internal predecessors, (8467), 0 states have call successors, (0), 0 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 16:52:56,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5859 states to 5859 states and 8467 transitions. [2022-11-21 16:52:56,780 INFO L78 Accepts]: Start accepts. Automaton has 5859 states and 8467 transitions. Word has length 155 [2022-11-21 16:52:56,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:52:56,781 INFO L495 AbstractCegarLoop]: Abstraction has 5859 states and 8467 transitions. [2022-11-21 16:52:56,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 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 16:52:56,782 INFO L276 IsEmpty]: Start isEmpty. Operand 5859 states and 8467 transitions. [2022-11-21 16:52:56,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-11-21 16:52:56,786 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:52:56,787 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:52:56,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 16:52:56,788 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:52:56,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:52:56,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1240150338, now seen corresponding path program 1 times [2022-11-21 16:52:56,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:52:56,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552191327] [2022-11-21 16:52:56,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:52:56,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:52:56,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:52:57,146 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-21 16:52:57,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:52:57,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552191327] [2022-11-21 16:52:57,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552191327] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:52:57,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:52:57,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:52:57,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151046721] [2022-11-21 16:52:57,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:52:57,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:52:57,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:52:57,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:52:57,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:52:57,153 INFO L87 Difference]: Start difference. First operand 5859 states and 8467 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 0 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 16:53:02,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:53:02,498 INFO L93 Difference]: Finished difference Result 15687 states and 23393 transitions. [2022-11-21 16:53:02,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:53:02,499 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 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 197 [2022-11-21 16:53:02,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:53:02,540 INFO L225 Difference]: With dead ends: 15687 [2022-11-21 16:53:02,540 INFO L226 Difference]: Without dead ends: 10617 [2022-11-21 16:53:02,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:53:02,549 INFO L413 NwaCegarLoop]: 785 mSDtfsCounter, 919 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2554 mSolverCounterSat, 756 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 3310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 756 IncrementalHoareTripleChecker+Valid, 2554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:53:02,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [919 Valid, 918 Invalid, 3310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [756 Valid, 2554 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-21 16:53:02,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10617 states. [2022-11-21 16:53:02,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10617 to 10608. [2022-11-21 16:53:02,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10608 states, 10607 states have (on average 1.3553313849344772) internal successors, (14376), 10607 states have internal predecessors, (14376), 0 states have call successors, (0), 0 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 16:53:02,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10608 states to 10608 states and 14376 transitions. [2022-11-21 16:53:02,788 INFO L78 Accepts]: Start accepts. Automaton has 10608 states and 14376 transitions. Word has length 197 [2022-11-21 16:53:02,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:53:02,790 INFO L495 AbstractCegarLoop]: Abstraction has 10608 states and 14376 transitions. [2022-11-21 16:53:02,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 0 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 16:53:02,791 INFO L276 IsEmpty]: Start isEmpty. Operand 10608 states and 14376 transitions. [2022-11-21 16:53:02,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-11-21 16:53:02,797 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:53:02,798 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:53:02,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 16:53:02,799 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:53:02,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:53:02,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1234602945, now seen corresponding path program 1 times [2022-11-21 16:53:02,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:53:02,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299872940] [2022-11-21 16:53:02,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:53:02,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:53:02,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:53:03,166 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-21 16:53:03,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:53:03,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299872940] [2022-11-21 16:53:03,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299872940] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:53:03,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:53:03,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:53:03,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972504543] [2022-11-21 16:53:03,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:53:03,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:53:03,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:53:03,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:53:03,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:53:03,170 INFO L87 Difference]: Start difference. First operand 10608 states and 14376 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 0 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 16:53:08,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:53:08,615 INFO L93 Difference]: Finished difference Result 28351 states and 39246 transitions. [2022-11-21 16:53:08,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:53:08,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 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 211 [2022-11-21 16:53:08,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:53:08,664 INFO L225 Difference]: With dead ends: 28351 [2022-11-21 16:53:08,665 INFO L226 Difference]: Without dead ends: 18532 [2022-11-21 16:53:08,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:53:08,677 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 909 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 2872 mSolverCounterSat, 544 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 3416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 544 IncrementalHoareTripleChecker+Valid, 2872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:53:08,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 613 Invalid, 3416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [544 Valid, 2872 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-21 16:53:08,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18532 states. [2022-11-21 16:53:08,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18532 to 18523. [2022-11-21 16:53:08,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18523 states, 18522 states have (on average 1.3253428355469172) internal successors, (24548), 18522 states have internal predecessors, (24548), 0 states have call successors, (0), 0 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 16:53:09,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18523 states to 18523 states and 24548 transitions. [2022-11-21 16:53:09,001 INFO L78 Accepts]: Start accepts. Automaton has 18523 states and 24548 transitions. Word has length 211 [2022-11-21 16:53:09,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:53:09,002 INFO L495 AbstractCegarLoop]: Abstraction has 18523 states and 24548 transitions. [2022-11-21 16:53:09,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 2 states have internal predecessors, (128), 0 states have call successors, (0), 0 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 16:53:09,003 INFO L276 IsEmpty]: Start isEmpty. Operand 18523 states and 24548 transitions. [2022-11-21 16:53:09,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2022-11-21 16:53:09,006 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:53:09,007 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:53:09,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 16:53:09,007 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:53:09,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:53:09,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1053087695, now seen corresponding path program 1 times [2022-11-21 16:53:09,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:53:09,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866277609] [2022-11-21 16:53:09,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:53:09,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:53:09,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:53:09,291 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-21 16:53:09,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:53:09,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866277609] [2022-11-21 16:53:09,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866277609] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:53:09,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:53:09,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:53:09,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715158176] [2022-11-21 16:53:09,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:53:09,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:53:09,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:53:09,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:53:09,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:53:09,296 INFO L87 Difference]: Start difference. First operand 18523 states and 24548 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:14,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:53:14,281 INFO L93 Difference]: Finished difference Result 51208 states and 68761 transitions. [2022-11-21 16:53:14,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:53:14,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 223 [2022-11-21 16:53:14,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:53:14,351 INFO L225 Difference]: With dead ends: 51208 [2022-11-21 16:53:14,352 INFO L226 Difference]: Without dead ends: 33474 [2022-11-21 16:53:14,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:53:14,368 INFO L413 NwaCegarLoop]: 839 mSDtfsCounter, 857 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 2308 mSolverCounterSat, 870 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 3178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 870 IncrementalHoareTripleChecker+Valid, 2308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-21 16:53:14,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 986 Invalid, 3178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [870 Valid, 2308 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-21 16:53:14,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33474 states. [2022-11-21 16:53:14,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33474 to 32684. [2022-11-21 16:53:14,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32684 states, 32683 states have (on average 1.2454181072728943) internal successors, (40704), 32683 states have internal predecessors, (40704), 0 states have call successors, (0), 0 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 16:53:14,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32684 states to 32684 states and 40704 transitions. [2022-11-21 16:53:14,870 INFO L78 Accepts]: Start accepts. Automaton has 32684 states and 40704 transitions. Word has length 223 [2022-11-21 16:53:14,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:53:14,872 INFO L495 AbstractCegarLoop]: Abstraction has 32684 states and 40704 transitions. [2022-11-21 16:53:14,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 2 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:53:14,876 INFO L276 IsEmpty]: Start isEmpty. Operand 32684 states and 40704 transitions. [2022-11-21 16:53:14,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2022-11-21 16:53:14,880 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:53:14,880 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:53:14,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 16:53:14,881 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:53:14,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:53:14,882 INFO L85 PathProgramCache]: Analyzing trace with hash -10527977, now seen corresponding path program 1 times [2022-11-21 16:53:14,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:53:14,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661731979] [2022-11-21 16:53:14,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:53:14,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:53:14,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:53:15,196 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:53:15,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:53:15,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661731979] [2022-11-21 16:53:15,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661731979] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:53:15,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:53:15,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:53:15,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418089323] [2022-11-21 16:53:15,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:53:15,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:53:15,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:53:15,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:53:15,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:53:15,200 INFO L87 Difference]: Start difference. First operand 32684 states and 40704 transitions. Second operand has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 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 16:53:25,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:53:25,576 INFO L93 Difference]: Finished difference Result 87628 states and 111186 transitions. [2022-11-21 16:53:25,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:53:25,577 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 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 227 [2022-11-21 16:53:25,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:53:25,694 INFO L225 Difference]: With dead ends: 87628 [2022-11-21 16:53:25,695 INFO L226 Difference]: Without dead ends: 55733 [2022-11-21 16:53:25,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:53:25,732 INFO L413 NwaCegarLoop]: 637 mSDtfsCounter, 1736 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 6142 mSolverCounterSat, 1129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1736 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 7271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1129 IncrementalHoareTripleChecker+Valid, 6142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-11-21 16:53:25,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1736 Valid, 838 Invalid, 7271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1129 Valid, 6142 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2022-11-21 16:53:25,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55733 states. [2022-11-21 16:53:26,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55733 to 54816. [2022-11-21 16:53:26,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54816 states, 54815 states have (on average 1.2438566085925384) internal successors, (68182), 54815 states have internal predecessors, (68182), 0 states have call successors, (0), 0 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 16:53:26,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54816 states to 54816 states and 68182 transitions. [2022-11-21 16:53:26,642 INFO L78 Accepts]: Start accepts. Automaton has 54816 states and 68182 transitions. Word has length 227 [2022-11-21 16:53:26,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:53:26,643 INFO L495 AbstractCegarLoop]: Abstraction has 54816 states and 68182 transitions. [2022-11-21 16:53:26,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 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 16:53:26,643 INFO L276 IsEmpty]: Start isEmpty. Operand 54816 states and 68182 transitions. [2022-11-21 16:53:26,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-11-21 16:53:26,646 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:53:26,647 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:53:26,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 16:53:26,647 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:53:26,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:53:26,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1712465374, now seen corresponding path program 1 times [2022-11-21 16:53:26,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:53:26,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106760536] [2022-11-21 16:53:26,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:53:26,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:53:26,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:53:27,051 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:53:27,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:53:27,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106760536] [2022-11-21 16:53:27,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106760536] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:53:27,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:53:27,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:53:27,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824623332] [2022-11-21 16:53:27,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:53:27,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:53:27,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:53:27,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:53:27,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:53:27,054 INFO L87 Difference]: Start difference. First operand 54816 states and 68182 transitions. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 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 16:53:32,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:53:32,718 INFO L93 Difference]: Finished difference Result 152927 states and 191818 transitions. [2022-11-21 16:53:32,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:53:32,720 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 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 237 [2022-11-21 16:53:32,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:53:32,907 INFO L225 Difference]: With dead ends: 152927 [2022-11-21 16:53:32,907 INFO L226 Difference]: Without dead ends: 98900 [2022-11-21 16:53:32,947 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 16:53:32,952 INFO L413 NwaCegarLoop]: 900 mSDtfsCounter, 818 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 2429 mSolverCounterSat, 896 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 818 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 3325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 896 IncrementalHoareTripleChecker+Valid, 2429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:53:32,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [818 Valid, 1016 Invalid, 3325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [896 Valid, 2429 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-21 16:53:33,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98900 states. [2022-11-21 16:53:34,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98900 to 98889. [2022-11-21 16:53:34,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98889 states, 98888 states have (on average 1.1900331688374728) internal successors, (117680), 98888 states have internal predecessors, (117680), 0 states have call successors, (0), 0 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 16:53:34,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98889 states to 98889 states and 117680 transitions. [2022-11-21 16:53:34,702 INFO L78 Accepts]: Start accepts. Automaton has 98889 states and 117680 transitions. Word has length 237 [2022-11-21 16:53:34,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:53:34,702 INFO L495 AbstractCegarLoop]: Abstraction has 98889 states and 117680 transitions. [2022-11-21 16:53:34,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 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 16:53:34,703 INFO L276 IsEmpty]: Start isEmpty. Operand 98889 states and 117680 transitions. [2022-11-21 16:53:34,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2022-11-21 16:53:34,710 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:53:34,711 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:53:34,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 16:53:34,712 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:53:34,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:53:34,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1363018496, now seen corresponding path program 1 times [2022-11-21 16:53:34,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:53:34,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86726780] [2022-11-21 16:53:34,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:53:34,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:53:34,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:53:35,354 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 196 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-11-21 16:53:35,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:53:35,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86726780] [2022-11-21 16:53:35,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86726780] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:53:35,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:53:35,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:53:35,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939495989] [2022-11-21 16:53:35,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:53:35,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:53:35,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:53:35,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:53:35,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:53:35,357 INFO L87 Difference]: Start difference. First operand 98889 states and 117680 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 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 16:53:40,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:53:40,703 INFO L93 Difference]: Finished difference Result 182823 states and 219258 transitions. [2022-11-21 16:53:40,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:53:40,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 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 313 [2022-11-21 16:53:40,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:53:40,877 INFO L225 Difference]: With dead ends: 182823 [2022-11-21 16:53:40,878 INFO L226 Difference]: Without dead ends: 98901 [2022-11-21 16:53:40,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:53:40,923 INFO L413 NwaCegarLoop]: 1021 mSDtfsCounter, 730 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 2706 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 1202 SdHoareTripleChecker+Invalid, 2710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-21 16:53:40,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 1202 Invalid, 2710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2706 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-21 16:53:41,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98901 states. [2022-11-21 16:53:42,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98901 to 98889. [2022-11-21 16:53:42,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98889 states, 98888 states have (on average 1.1891230482970634) internal successors, (117590), 98888 states have internal predecessors, (117590), 0 states have call successors, (0), 0 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 16:53:42,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98889 states to 98889 states and 117590 transitions. [2022-11-21 16:53:42,864 INFO L78 Accepts]: Start accepts. Automaton has 98889 states and 117590 transitions. Word has length 313 [2022-11-21 16:53:42,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:53:42,865 INFO L495 AbstractCegarLoop]: Abstraction has 98889 states and 117590 transitions. [2022-11-21 16:53:42,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 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 16:53:42,866 INFO L276 IsEmpty]: Start isEmpty. Operand 98889 states and 117590 transitions. [2022-11-21 16:53:42,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-11-21 16:53:42,875 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:53:42,876 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:53:42,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 16:53:42,876 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:53:42,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:53:42,877 INFO L85 PathProgramCache]: Analyzing trace with hash -753738387, now seen corresponding path program 1 times [2022-11-21 16:53:42,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:53:42,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086407926] [2022-11-21 16:53:42,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:53:42,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:53:42,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:53:43,451 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 267 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-21 16:53:43,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:53:43,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086407926] [2022-11-21 16:53:43,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086407926] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:53:43,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:53:43,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:53:43,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422467439] [2022-11-21 16:53:43,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:53:43,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:53:43,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:53:43,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:53:43,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:53:43,455 INFO L87 Difference]: Start difference. First operand 98889 states and 117590 transitions. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 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 16:53:49,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:53:49,205 INFO L93 Difference]: Finished difference Result 196994 states and 234399 transitions. [2022-11-21 16:53:49,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:53:49,206 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 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 316 [2022-11-21 16:53:49,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:53:49,356 INFO L225 Difference]: With dead ends: 196994 [2022-11-21 16:53:49,357 INFO L226 Difference]: Without dead ends: 98894 [2022-11-21 16:53:49,409 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 16:53:49,411 INFO L413 NwaCegarLoop]: 1441 mSDtfsCounter, 941 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 2510 mSolverCounterSat, 602 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 1534 SdHoareTripleChecker+Invalid, 3112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 602 IncrementalHoareTripleChecker+Valid, 2510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-21 16:53:49,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [941 Valid, 1534 Invalid, 3112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [602 Valid, 2510 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-21 16:53:49,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98894 states. [2022-11-21 16:53:50,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98894 to 96520. [2022-11-21 16:53:50,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96520 states, 96519 states have (on average 1.1504988655083455) internal successors, (111045), 96519 states have internal predecessors, (111045), 0 states have call successors, (0), 0 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 16:53:50,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96520 states to 96520 states and 111045 transitions. [2022-11-21 16:53:50,827 INFO L78 Accepts]: Start accepts. Automaton has 96520 states and 111045 transitions. Word has length 316 [2022-11-21 16:53:50,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:53:50,827 INFO L495 AbstractCegarLoop]: Abstraction has 96520 states and 111045 transitions. [2022-11-21 16:53:50,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 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 16:53:50,828 INFO L276 IsEmpty]: Start isEmpty. Operand 96520 states and 111045 transitions. [2022-11-21 16:53:50,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2022-11-21 16:53:50,835 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:53:50,835 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:53:50,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 16:53:50,837 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:53:50,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:53:50,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1650510668, now seen corresponding path program 1 times [2022-11-21 16:53:50,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:53:50,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360994593] [2022-11-21 16:53:50,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:53:50,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:53:50,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:53:51,579 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 267 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-21 16:53:51,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:53:51,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360994593] [2022-11-21 16:53:51,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360994593] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:53:51,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:53:51,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:53:51,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173893034] [2022-11-21 16:53:51,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:53:51,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:53:51,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:53:51,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:53:51,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:53:51,588 INFO L87 Difference]: Start difference. First operand 96520 states and 111045 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 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 16:53:58,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:53:58,079 INFO L93 Difference]: Finished difference Result 224527 states and 259960 transitions. [2022-11-21 16:53:58,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:53:58,095 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 326 [2022-11-21 16:53:58,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:53:58,265 INFO L225 Difference]: With dead ends: 224527 [2022-11-21 16:53:58,265 INFO L226 Difference]: Without dead ends: 128796 [2022-11-21 16:53:58,295 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 16:53:58,296 INFO L413 NwaCegarLoop]: 765 mSDtfsCounter, 912 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 2399 mSolverCounterSat, 798 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 3197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 798 IncrementalHoareTripleChecker+Valid, 2399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:53:58,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [912 Valid, 848 Invalid, 3197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [798 Valid, 2399 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-21 16:53:58,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128796 states. [2022-11-21 16:53:59,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128796 to 128775. [2022-11-21 16:53:59,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128775 states, 128774 states have (on average 1.1359591221830494) internal successors, (146282), 128774 states have internal predecessors, (146282), 0 states have call successors, (0), 0 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 16:54:00,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128775 states to 128775 states and 146282 transitions. [2022-11-21 16:54:00,377 INFO L78 Accepts]: Start accepts. Automaton has 128775 states and 146282 transitions. Word has length 326 [2022-11-21 16:54:00,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:54:00,378 INFO L495 AbstractCegarLoop]: Abstraction has 128775 states and 146282 transitions. [2022-11-21 16:54:00,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 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 16:54:00,379 INFO L276 IsEmpty]: Start isEmpty. Operand 128775 states and 146282 transitions. [2022-11-21 16:54:00,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2022-11-21 16:54:00,382 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:54:00,382 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:54:00,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 16:54:00,383 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:54:00,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:54:00,384 INFO L85 PathProgramCache]: Analyzing trace with hash 128523030, now seen corresponding path program 1 times [2022-11-21 16:54:00,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:54:00,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399707465] [2022-11-21 16:54:00,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:54:00,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:54:00,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:54:02,380 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 199 proven. 110 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-21 16:54:02,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:54:02,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399707465] [2022-11-21 16:54:02,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399707465] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:54:02,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568557587] [2022-11-21 16:54:02,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:54:02,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:54:02,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee45b8a-afc2-4a77-b1c6-a407f43cd1ff/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:54:02,390 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee45b8a-afc2-4a77-b1c6-a407f43cd1ff/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:54:02,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee45b8a-afc2-4a77-b1c6-a407f43cd1ff/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 16:54:02,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:54:02,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 16:54:02,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:54:02,920 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-11-21 16:54:02,920 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:54:02,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568557587] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:54:02,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:54:02,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-11-21 16:54:02,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432274301] [2022-11-21 16:54:02,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:54:02,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:54:02,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:54:02,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:54:02,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:54:02,924 INFO L87 Difference]: Start difference. First operand 128775 states and 146282 transitions. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 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 16:54:08,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:54:08,344 INFO L93 Difference]: Finished difference Result 255972 states and 290737 transitions. [2022-11-21 16:54:08,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:54:08,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 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 342 [2022-11-21 16:54:08,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:54:08,531 INFO L225 Difference]: With dead ends: 255972 [2022-11-21 16:54:08,531 INFO L226 Difference]: Without dead ends: 127986 [2022-11-21 16:54:08,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:54:08,590 INFO L413 NwaCegarLoop]: 1359 mSDtfsCounter, 1134 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2464 mSolverCounterSat, 448 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1134 SdHoareTripleChecker+Valid, 1441 SdHoareTripleChecker+Invalid, 2912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 448 IncrementalHoareTripleChecker+Valid, 2464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-21 16:54:08,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1134 Valid, 1441 Invalid, 2912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [448 Valid, 2464 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-21 16:54:08,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127986 states. [2022-11-21 16:54:10,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127986 to 127985. [2022-11-21 16:54:10,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127985 states, 127984 states have (on average 1.1008172896612076) internal successors, (140887), 127984 states have internal predecessors, (140887), 0 states have call successors, (0), 0 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 16:54:10,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127985 states to 127985 states and 140887 transitions. [2022-11-21 16:54:10,723 INFO L78 Accepts]: Start accepts. Automaton has 127985 states and 140887 transitions. Word has length 342 [2022-11-21 16:54:10,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:54:10,724 INFO L495 AbstractCegarLoop]: Abstraction has 127985 states and 140887 transitions. [2022-11-21 16:54:10,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 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 16:54:10,725 INFO L276 IsEmpty]: Start isEmpty. Operand 127985 states and 140887 transitions. [2022-11-21 16:54:10,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2022-11-21 16:54:10,730 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:54:10,730 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:54:10,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee45b8a-afc2-4a77-b1c6-a407f43cd1ff/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 16:54:10,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ee45b8a-afc2-4a77-b1c6-a407f43cd1ff/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-21 16:54:10,940 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:54:10,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:54:10,941 INFO L85 PathProgramCache]: Analyzing trace with hash 943803456, now seen corresponding path program 1 times [2022-11-21 16:54:10,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:54:10,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672100874] [2022-11-21 16:54:10,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:54:10,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:54:11,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:54:11,254 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-11-21 16:54:11,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:54:11,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672100874] [2022-11-21 16:54:11,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672100874] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:54:11,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:54:11,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:54:11,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597346024] [2022-11-21 16:54:11,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:54:11,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:54:11,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:54:11,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:54:11,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:54:11,257 INFO L87 Difference]: Start difference. First operand 127985 states and 140887 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 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 16:54:17,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:54:17,500 INFO L93 Difference]: Finished difference Result 288263 states and 317524 transitions. [2022-11-21 16:54:17,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:54:17,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 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 357 [2022-11-21 16:54:17,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:54:17,694 INFO L225 Difference]: With dead ends: 288263 [2022-11-21 16:54:17,694 INFO L226 Difference]: Without dead ends: 161067 [2022-11-21 16:54:17,744 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 16:54:17,744 INFO L413 NwaCegarLoop]: 954 mSDtfsCounter, 844 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 2452 mSolverCounterSat, 379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 2831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 2452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:54:17,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 1100 Invalid, 2831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [379 Valid, 2452 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-21 16:54:17,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161067 states. [2022-11-21 16:54:19,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161067 to 157105. [2022-11-21 16:54:20,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157105 states, 157104 states have (on average 1.0928174966900905) internal successors, (171686), 157104 states have internal predecessors, (171686), 0 states have call successors, (0), 0 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 16:54:20,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157105 states to 157105 states and 171686 transitions. [2022-11-21 16:54:20,292 INFO L78 Accepts]: Start accepts. Automaton has 157105 states and 171686 transitions. Word has length 357 [2022-11-21 16:54:20,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:54:20,293 INFO L495 AbstractCegarLoop]: Abstraction has 157105 states and 171686 transitions. [2022-11-21 16:54:20,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 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 16:54:20,293 INFO L276 IsEmpty]: Start isEmpty. Operand 157105 states and 171686 transitions. [2022-11-21 16:54:20,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2022-11-21 16:54:20,298 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:54:20,298 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:54:20,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 16:54:20,299 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:54:20,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:54:20,300 INFO L85 PathProgramCache]: Analyzing trace with hash -376200934, now seen corresponding path program 1 times [2022-11-21 16:54:20,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:54:20,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442386942] [2022-11-21 16:54:20,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:54:20,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:54:20,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:54:21,004 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 429 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-11-21 16:54:21,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:54:21,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442386942] [2022-11-21 16:54:21,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442386942] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:54:21,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:54:21,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:54:21,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017970161] [2022-11-21 16:54:21,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:54:21,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:54:21,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:54:21,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:54:21,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:54:21,008 INFO L87 Difference]: Start difference. First operand 157105 states and 171686 transitions. Second operand has 4 states, 4 states have (on average 65.5) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 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 16:54:31,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:54:31,970 INFO L93 Difference]: Finished difference Result 360842 states and 394845 transitions. [2022-11-21 16:54:31,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 16:54:31,971 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 65.5) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 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 359 [2022-11-21 16:54:31,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:54:32,214 INFO L225 Difference]: With dead ends: 360842 [2022-11-21 16:54:32,215 INFO L226 Difference]: Without dead ends: 204526 [2022-11-21 16:54:32,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:54:32,278 INFO L413 NwaCegarLoop]: 517 mSDtfsCounter, 1711 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 5920 mSolverCounterSat, 833 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1711 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 6753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 833 IncrementalHoareTripleChecker+Valid, 5920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-11-21 16:54:32,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1711 Valid, 708 Invalid, 6753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [833 Valid, 5920 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2022-11-21 16:54:32,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204526 states. [2022-11-21 16:54:35,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204526 to 203609. [2022-11-21 16:54:35,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203609 states, 203608 states have (on average 1.0939599622804606) internal successors, (222739), 203608 states have internal predecessors, (222739), 0 states have call successors, (0), 0 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 16:54:35,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203609 states to 203609 states and 222739 transitions. [2022-11-21 16:54:35,711 INFO L78 Accepts]: Start accepts. Automaton has 203609 states and 222739 transitions. Word has length 359 [2022-11-21 16:54:35,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:54:35,712 INFO L495 AbstractCegarLoop]: Abstraction has 203609 states and 222739 transitions. [2022-11-21 16:54:35,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 65.5) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 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 16:54:35,712 INFO L276 IsEmpty]: Start isEmpty. Operand 203609 states and 222739 transitions. [2022-11-21 16:54:35,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2022-11-21 16:54:35,720 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:54:35,720 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:54:35,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 16:54:35,721 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:54:35,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:54:35,722 INFO L85 PathProgramCache]: Analyzing trace with hash 792037552, now seen corresponding path program 1 times [2022-11-21 16:54:35,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:54:35,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879113951] [2022-11-21 16:54:35,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:54:35,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:54:35,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:54:36,023 INFO L134 CoverageAnalysis]: Checked inductivity of 556 backedges. 429 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-11-21 16:54:36,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:54:36,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879113951] [2022-11-21 16:54:36,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879113951] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:54:36,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:54:36,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:54:36,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468008729] [2022-11-21 16:54:36,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:54:36,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:54:36,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:54:36,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:54:36,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 16:54:36,027 INFO L87 Difference]: Start difference. First operand 203609 states and 222739 transitions. Second operand has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 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 16:54:41,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:54:41,965 INFO L93 Difference]: Finished difference Result 414266 states and 452542 transitions. [2022-11-21 16:54:41,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:54:41,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 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 388 [2022-11-21 16:54:41,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted.