./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.10.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_43caf77d-8854-4b1c-baa4-bc2378e903cc/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43caf77d-8854-4b1c-baa4-bc2378e903cc/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43caf77d-8854-4b1c-baa4-bc2378e903cc/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43caf77d-8854-4b1c-baa4-bc2378e903cc/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.10.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43caf77d-8854-4b1c-baa4-bc2378e903cc/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43caf77d-8854-4b1c-baa4-bc2378e903cc/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ead4d47009bf2f1ade65f6eacfdab211d65347e20b879f4822b8ceaab9ef42cd --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 09:27:34,146 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 09:27:34,149 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 09:27:34,181 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 09:27:34,182 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 09:27:34,200 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 09:27:34,203 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 09:27:34,207 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 09:27:34,209 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 09:27:34,218 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 09:27:34,219 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 09:27:34,222 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 09:27:34,223 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 09:27:34,225 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 09:27:34,228 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 09:27:34,230 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 09:27:34,232 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 09:27:34,233 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 09:27:34,235 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 09:27:34,241 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 09:27:34,243 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 09:27:34,255 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 09:27:34,257 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 09:27:34,258 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 09:27:34,265 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 09:27:34,265 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 09:27:34,266 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 09:27:34,268 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 09:27:34,269 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 09:27:34,271 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 09:27:34,271 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 09:27:34,272 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 09:27:34,274 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 09:27:34,276 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 09:27:34,278 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 09:27:34,278 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 09:27:34,279 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 09:27:34,280 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 09:27:34,280 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 09:27:34,282 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 09:27:34,283 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 09:27:34,284 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43caf77d-8854-4b1c-baa4-bc2378e903cc/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 09:27:34,326 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 09:27:34,329 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 09:27:34,330 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 09:27:34,330 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 09:27:34,331 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 09:27:34,331 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 09:27:34,332 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 09:27:34,332 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 09:27:34,333 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 09:27:34,333 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 09:27:34,334 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 09:27:34,335 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 09:27:34,335 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 09:27:34,335 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 09:27:34,335 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 09:27:34,335 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 09:27:34,336 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 09:27:34,336 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 09:27:34,336 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 09:27:34,336 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 09:27:34,337 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 09:27:34,337 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 09:27:34,337 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 09:27:34,337 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 09:27:34,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:27:34,338 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 09:27:34,338 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 09:27:34,338 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 09:27:34,338 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 09:27:34,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 09:27:34,339 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 09:27:34,339 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 09:27:34,340 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 09:27:34,340 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_43caf77d-8854-4b1c-baa4-bc2378e903cc/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43caf77d-8854-4b1c-baa4-bc2378e903cc/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ead4d47009bf2f1ade65f6eacfdab211d65347e20b879f4822b8ceaab9ef42cd [2022-11-20 09:27:34,683 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 09:27:34,714 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 09:27:34,717 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 09:27:34,718 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 09:27:34,719 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 09:27:34,720 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43caf77d-8854-4b1c-baa4-bc2378e903cc/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.10.cil-2.c [2022-11-20 09:27:37,809 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 09:27:38,588 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 09:27:38,589 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43caf77d-8854-4b1c-baa4-bc2378e903cc/sv-benchmarks/c/combinations/Problem05_label49+token_ring.10.cil-2.c [2022-11-20 09:27:38,643 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43caf77d-8854-4b1c-baa4-bc2378e903cc/bin/uautomizer-ug76WZFUDN/data/c539b9ea3/b2b40a8e784a45928a4824581ced33ca/FLAGff82fd137 [2022-11-20 09:27:38,662 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43caf77d-8854-4b1c-baa4-bc2378e903cc/bin/uautomizer-ug76WZFUDN/data/c539b9ea3/b2b40a8e784a45928a4824581ced33ca [2022-11-20 09:27:38,667 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 09:27:38,670 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 09:27:38,671 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 09:27:38,672 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 09:27:38,676 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 09:27:38,677 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:27:38" (1/1) ... [2022-11-20 09:27:38,678 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31ecf8f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:38, skipping insertion in model container [2022-11-20 09:27:38,678 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:27:38" (1/1) ... [2022-11-20 09:27:38,685 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 09:27:38,903 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:27:41,181 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_43caf77d-8854-4b1c-baa4-bc2378e903cc/sv-benchmarks/c/combinations/Problem05_label49+token_ring.10.cil-2.c[380593,380606] [2022-11-20 09:27:41,213 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_43caf77d-8854-4b1c-baa4-bc2378e903cc/sv-benchmarks/c/combinations/Problem05_label49+token_ring.10.cil-2.c[383339,383352] [2022-11-20 09:27:41,516 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:27:41,531 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 09:27:42,810 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_43caf77d-8854-4b1c-baa4-bc2378e903cc/sv-benchmarks/c/combinations/Problem05_label49+token_ring.10.cil-2.c[380593,380606] [2022-11-20 09:27:42,816 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_43caf77d-8854-4b1c-baa4-bc2378e903cc/sv-benchmarks/c/combinations/Problem05_label49+token_ring.10.cil-2.c[383339,383352] [2022-11-20 09:27:42,836 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:27:42,894 INFO L208 MainTranslator]: Completed translation [2022-11-20 09:27:42,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:42 WrapperNode [2022-11-20 09:27:42,894 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 09:27:42,895 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 09:27:42,895 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 09:27:42,895 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 09:27:42,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:42" (1/1) ... [2022-11-20 09:27:42,996 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:42" (1/1) ... [2022-11-20 09:27:43,465 INFO L138 Inliner]: procedures = 64, calls = 71, calls flagged for inlining = 42, calls inlined = 42, statements flattened = 13083 [2022-11-20 09:27:43,466 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 09:27:43,467 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 09:27:43,467 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 09:27:43,468 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 09:27:43,477 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:42" (1/1) ... [2022-11-20 09:27:43,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:42" (1/1) ... [2022-11-20 09:27:43,544 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:42" (1/1) ... [2022-11-20 09:27:43,544 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:42" (1/1) ... [2022-11-20 09:27:43,837 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:42" (1/1) ... [2022-11-20 09:27:43,944 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:42" (1/1) ... [2022-11-20 09:27:44,052 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:42" (1/1) ... [2022-11-20 09:27:44,088 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:42" (1/1) ... [2022-11-20 09:27:44,222 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 09:27:44,223 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 09:27:44,223 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 09:27:44,223 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 09:27:44,226 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:42" (1/1) ... [2022-11-20 09:27:44,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:27:44,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43caf77d-8854-4b1c-baa4-bc2378e903cc/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:44,294 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43caf77d-8854-4b1c-baa4-bc2378e903cc/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:44,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43caf77d-8854-4b1c-baa4-bc2378e903cc/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 09:27:44,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 09:27:44,418 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-20 09:27:44,418 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-20 09:27:44,418 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-20 09:27:44,419 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-20 09:27:44,419 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-20 09:27:44,419 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-20 09:27:44,419 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-20 09:27:44,419 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-20 09:27:44,419 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-20 09:27:44,419 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-20 09:27:44,420 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-20 09:27:44,420 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-20 09:27:44,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 09:27:44,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 09:27:44,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 09:27:44,617 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 09:27:44,619 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 09:27:53,746 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 09:27:53,788 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 09:27:53,788 INFO L300 CfgBuilder]: Removed 14 assume(true) statements. [2022-11-20 09:27:53,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:27:53 BoogieIcfgContainer [2022-11-20 09:27:53,795 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 09:27:53,798 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 09:27:53,798 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 09:27:53,801 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 09:27:53,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:27:38" (1/3) ... [2022-11-20 09:27:53,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6918c0d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:27:53, skipping insertion in model container [2022-11-20 09:27:53,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:42" (2/3) ... [2022-11-20 09:27:53,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6918c0d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:27:53, skipping insertion in model container [2022-11-20 09:27:53,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:27:53" (3/3) ... [2022-11-20 09:27:53,812 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.10.cil-2.c [2022-11-20 09:27:53,834 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 09:27:53,835 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-20 09:27:53,940 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 09:27:53,947 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;@7700c17e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 09:27:53,947 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-20 09:27:53,966 INFO L276 IsEmpty]: Start isEmpty. Operand has 2515 states, 2482 states have (on average 1.8456889605157132) internal successors, (4581), 2485 states have internal predecessors, (4581), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-11-20 09:27:53,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-20 09:27:53,995 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:53,996 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:53,996 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:54,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:54,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1879597445, now seen corresponding path program 1 times [2022-11-20 09:27:54,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:54,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674019733] [2022-11-20 09:27:54,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:54,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:54,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:54,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 09:27:54,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:54,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 09:27:54,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:54,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 09:27:54,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:54,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-20 09:27:54,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:54,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-20 09:27:54,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:54,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:54,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:54,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674019733] [2022-11-20 09:27:54,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674019733] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:54,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:54,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 09:27:54,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944492687] [2022-11-20 09:27:54,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:54,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 09:27:54,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:54,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 09:27:54,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 09:27:54,652 INFO L87 Difference]: Start difference. First operand has 2515 states, 2482 states have (on average 1.8456889605157132) internal successors, (4581), 2485 states have internal predecessors, (4581), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 09:27:57,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:57,219 INFO L93 Difference]: Finished difference Result 5140 states and 9446 transitions. [2022-11-20 09:27:57,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 09:27:57,229 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2022-11-20 09:27:57,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:57,261 INFO L225 Difference]: With dead ends: 5140 [2022-11-20 09:27:57,261 INFO L226 Difference]: Without dead ends: 2568 [2022-11-20 09:27:57,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:27:57,281 INFO L413 NwaCegarLoop]: 4326 mSDtfsCounter, 888 mSDsluCounter, 12413 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 910 SdHoareTripleChecker+Valid, 16739 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:57,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [910 Valid, 16739 Invalid, 931 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [52 Valid, 879 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-20 09:27:57,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2568 states. [2022-11-20 09:27:57,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2568 to 2448. [2022-11-20 09:27:57,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2448 states, 2416 states have (on average 1.830298013245033) internal successors, (4422), 2418 states have internal predecessors, (4422), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-11-20 09:27:57,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2448 states to 2448 states and 4470 transitions. [2022-11-20 09:27:57,522 INFO L78 Accepts]: Start accepts. Automaton has 2448 states and 4470 transitions. Word has length 156 [2022-11-20 09:27:57,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:57,523 INFO L495 AbstractCegarLoop]: Abstraction has 2448 states and 4470 transitions. [2022-11-20 09:27:57,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 09:27:57,524 INFO L276 IsEmpty]: Start isEmpty. Operand 2448 states and 4470 transitions. [2022-11-20 09:27:57,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-20 09:27:57,528 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:57,528 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:57,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 09:27:57,529 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:57,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:57,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1988815353, now seen corresponding path program 1 times [2022-11-20 09:27:57,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:57,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586015240] [2022-11-20 09:27:57,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:57,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:57,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:57,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 09:27:57,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:57,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 09:27:57,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:57,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 09:27:57,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:58,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-20 09:27:58,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:58,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-20 09:27:58,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:58,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:58,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:58,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586015240] [2022-11-20 09:27:58,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586015240] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:58,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:58,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:27:58,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483948963] [2022-11-20 09:27:58,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:58,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:27:58,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:58,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:27:58,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:27:58,054 INFO L87 Difference]: Start difference. First operand 2448 states and 4470 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 09:28:03,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:03,153 INFO L93 Difference]: Finished difference Result 3341 states and 5922 transitions. [2022-11-20 09:28:03,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 09:28:03,154 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2022-11-20 09:28:03,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:03,169 INFO L225 Difference]: With dead ends: 3341 [2022-11-20 09:28:03,169 INFO L226 Difference]: Without dead ends: 3032 [2022-11-20 09:28:03,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 09:28:03,173 INFO L413 NwaCegarLoop]: 4443 mSDtfsCounter, 5233 mSDsluCounter, 17450 mSDsCounter, 0 mSdLazyCounter, 3189 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5250 SdHoareTripleChecker+Valid, 21893 SdHoareTripleChecker+Invalid, 3253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 3189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:03,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5250 Valid, 21893 Invalid, 3253 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [64 Valid, 3189 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-20 09:28:03,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3032 states. [2022-11-20 09:28:03,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3032 to 2775. [2022-11-20 09:28:03,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2775 states, 2714 states have (on average 1.8043478260869565) internal successors, (4897), 2718 states have internal predecessors, (4897), 45 states have call successors, (45), 12 states have call predecessors, (45), 14 states have return successors, (52), 46 states have call predecessors, (52), 45 states have call successors, (52) [2022-11-20 09:28:03,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2775 states to 2775 states and 4994 transitions. [2022-11-20 09:28:03,310 INFO L78 Accepts]: Start accepts. Automaton has 2775 states and 4994 transitions. Word has length 156 [2022-11-20 09:28:03,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:03,310 INFO L495 AbstractCegarLoop]: Abstraction has 2775 states and 4994 transitions. [2022-11-20 09:28:03,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 09:28:03,311 INFO L276 IsEmpty]: Start isEmpty. Operand 2775 states and 4994 transitions. [2022-11-20 09:28:03,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-20 09:28:03,314 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:03,314 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:03,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 09:28:03,315 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:03,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:03,315 INFO L85 PathProgramCache]: Analyzing trace with hash 371374903, now seen corresponding path program 1 times [2022-11-20 09:28:03,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:03,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697718265] [2022-11-20 09:28:03,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:03,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:03,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:03,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 09:28:03,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:03,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 09:28:03,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:03,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 09:28:03,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:03,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-20 09:28:03,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:03,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-20 09:28:03,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:03,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:03,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:03,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697718265] [2022-11-20 09:28:03,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697718265] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:03,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:03,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:28:03,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927569773] [2022-11-20 09:28:03,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:03,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:28:03,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:03,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:28:03,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:28:03,591 INFO L87 Difference]: Start difference. First operand 2775 states and 4994 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 09:28:08,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:08,178 INFO L93 Difference]: Finished difference Result 4476 states and 7734 transitions. [2022-11-20 09:28:08,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 09:28:08,179 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2022-11-20 09:28:08,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:08,198 INFO L225 Difference]: With dead ends: 4476 [2022-11-20 09:28:08,198 INFO L226 Difference]: Without dead ends: 3842 [2022-11-20 09:28:08,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 09:28:08,211 INFO L413 NwaCegarLoop]: 4414 mSDtfsCounter, 5274 mSDsluCounter, 17375 mSDsCounter, 0 mSdLazyCounter, 2997 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5291 SdHoareTripleChecker+Valid, 21789 SdHoareTripleChecker+Invalid, 3067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 2997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:08,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5291 Valid, 21789 Invalid, 3067 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [70 Valid, 2997 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-20 09:28:08,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3842 states. [2022-11-20 09:28:08,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3842 to 3377. [2022-11-20 09:28:08,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3377 states, 3264 states have (on average 1.7634803921568627) internal successors, (5756), 3270 states have internal predecessors, (5756), 83 states have call successors, (83), 24 states have call predecessors, (83), 28 states have return successors, (100), 86 states have call predecessors, (100), 83 states have call successors, (100) [2022-11-20 09:28:08,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3377 states to 3377 states and 5939 transitions. [2022-11-20 09:28:08,433 INFO L78 Accepts]: Start accepts. Automaton has 3377 states and 5939 transitions. Word has length 156 [2022-11-20 09:28:08,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:08,434 INFO L495 AbstractCegarLoop]: Abstraction has 3377 states and 5939 transitions. [2022-11-20 09:28:08,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 09:28:08,434 INFO L276 IsEmpty]: Start isEmpty. Operand 3377 states and 5939 transitions. [2022-11-20 09:28:08,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-20 09:28:08,438 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:08,438 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:08,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 09:28:08,439 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:08,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:08,440 INFO L85 PathProgramCache]: Analyzing trace with hash 734841401, now seen corresponding path program 1 times [2022-11-20 09:28:08,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:08,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605301002] [2022-11-20 09:28:08,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:08,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:08,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:08,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 09:28:08,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:08,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 09:28:08,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:08,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 09:28:08,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:08,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-20 09:28:08,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:08,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-20 09:28:08,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:08,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:08,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:08,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605301002] [2022-11-20 09:28:08,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605301002] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:08,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:08,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:28:08,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633000118] [2022-11-20 09:28:08,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:08,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:28:08,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:08,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:28:08,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:28:08,759 INFO L87 Difference]: Start difference. First operand 3377 states and 5939 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 09:28:13,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:13,433 INFO L93 Difference]: Finished difference Result 6696 states and 11267 transitions. [2022-11-20 09:28:13,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 09:28:13,439 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2022-11-20 09:28:13,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:13,463 INFO L225 Difference]: With dead ends: 6696 [2022-11-20 09:28:13,464 INFO L226 Difference]: Without dead ends: 5460 [2022-11-20 09:28:13,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 09:28:13,471 INFO L413 NwaCegarLoop]: 4440 mSDtfsCounter, 5233 mSDsluCounter, 17450 mSDsCounter, 0 mSdLazyCounter, 3179 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5250 SdHoareTripleChecker+Valid, 21890 SdHoareTripleChecker+Invalid, 3245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 3179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:13,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5250 Valid, 21890 Invalid, 3245 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [66 Valid, 3179 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-20 09:28:13,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5460 states. [2022-11-20 09:28:13,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5460 to 4583. [2022-11-20 09:28:13,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4583 states, 4366 states have (on average 1.712322491983509) internal successors, (7476), 4376 states have internal predecessors, (7476), 159 states have call successors, (159), 48 states have call predecessors, (159), 56 states have return successors, (202), 166 states have call predecessors, (202), 159 states have call successors, (202) [2022-11-20 09:28:13,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4583 states to 4583 states and 7837 transitions. [2022-11-20 09:28:13,843 INFO L78 Accepts]: Start accepts. Automaton has 4583 states and 7837 transitions. Word has length 156 [2022-11-20 09:28:13,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:13,844 INFO L495 AbstractCegarLoop]: Abstraction has 4583 states and 7837 transitions. [2022-11-20 09:28:13,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 09:28:13,851 INFO L276 IsEmpty]: Start isEmpty. Operand 4583 states and 7837 transitions. [2022-11-20 09:28:13,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-20 09:28:13,855 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:13,855 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:13,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 09:28:13,855 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:13,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:13,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1023660791, now seen corresponding path program 1 times [2022-11-20 09:28:13,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:13,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104343141] [2022-11-20 09:28:13,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:13,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:13,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:14,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 09:28:14,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:14,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 09:28:14,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:14,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 09:28:14,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:14,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-20 09:28:14,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:14,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-20 09:28:14,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:14,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:14,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:14,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104343141] [2022-11-20 09:28:14,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104343141] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:14,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:14,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:28:14,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757828562] [2022-11-20 09:28:14,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:14,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:28:14,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:14,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:28:14,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:28:14,168 INFO L87 Difference]: Start difference. First operand 4583 states and 7837 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 09:28:19,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:19,363 INFO L93 Difference]: Finished difference Result 11134 states and 18347 transitions. [2022-11-20 09:28:19,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 09:28:19,367 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2022-11-20 09:28:19,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:19,424 INFO L225 Difference]: With dead ends: 11134 [2022-11-20 09:28:19,424 INFO L226 Difference]: Without dead ends: 8692 [2022-11-20 09:28:19,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 09:28:19,435 INFO L413 NwaCegarLoop]: 4440 mSDtfsCounter, 5233 mSDsluCounter, 17450 mSDsCounter, 0 mSdLazyCounter, 3170 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5250 SdHoareTripleChecker+Valid, 21890 SdHoareTripleChecker+Invalid, 3236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 3170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:19,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5250 Valid, 21890 Invalid, 3236 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [66 Valid, 3170 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-20 09:28:19,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8692 states. [2022-11-20 09:28:20,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8692 to 7001. [2022-11-20 09:28:20,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7001 states, 6576 states have (on average 1.6611922141119222) internal successors, (10924), 6594 states have internal predecessors, (10924), 311 states have call successors, (311), 96 states have call predecessors, (311), 112 states have return successors, (424), 326 states have call predecessors, (424), 311 states have call successors, (424) [2022-11-20 09:28:20,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7001 states to 7001 states and 11659 transitions. [2022-11-20 09:28:20,089 INFO L78 Accepts]: Start accepts. Automaton has 7001 states and 11659 transitions. Word has length 156 [2022-11-20 09:28:20,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:20,089 INFO L495 AbstractCegarLoop]: Abstraction has 7001 states and 11659 transitions. [2022-11-20 09:28:20,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 09:28:20,090 INFO L276 IsEmpty]: Start isEmpty. Operand 7001 states and 11659 transitions. [2022-11-20 09:28:20,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-20 09:28:20,095 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:20,096 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:20,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 09:28:20,096 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:20,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:20,098 INFO L85 PathProgramCache]: Analyzing trace with hash 478788217, now seen corresponding path program 1 times [2022-11-20 09:28:20,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:20,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582235248] [2022-11-20 09:28:20,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:20,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:20,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:20,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 09:28:20,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:20,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 09:28:20,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:20,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 09:28:20,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:20,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-20 09:28:20,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:20,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-20 09:28:20,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:20,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:20,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:20,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582235248] [2022-11-20 09:28:20,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582235248] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:20,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:20,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:28:20,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124873081] [2022-11-20 09:28:20,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:20,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:28:20,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:20,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:28:20,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:28:20,384 INFO L87 Difference]: Start difference. First operand 7001 states and 11659 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 09:28:26,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:26,042 INFO L93 Difference]: Finished difference Result 20008 states and 32563 transitions. [2022-11-20 09:28:26,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 09:28:26,043 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2022-11-20 09:28:26,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:26,109 INFO L225 Difference]: With dead ends: 20008 [2022-11-20 09:28:26,109 INFO L226 Difference]: Without dead ends: 15148 [2022-11-20 09:28:26,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 09:28:26,130 INFO L413 NwaCegarLoop]: 4440 mSDtfsCounter, 5233 mSDsluCounter, 17450 mSDsCounter, 0 mSdLazyCounter, 3161 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5250 SdHoareTripleChecker+Valid, 21890 SdHoareTripleChecker+Invalid, 3227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 3161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:26,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5250 Valid, 21890 Invalid, 3227 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [66 Valid, 3161 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-20 09:28:26,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15148 states. [2022-11-20 09:28:27,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15148 to 11851. [2022-11-20 09:28:27,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11851 states, 11010 states have (on average 1.620345140781108) internal successors, (17840), 11044 states have internal predecessors, (17840), 615 states have call successors, (615), 192 states have call predecessors, (615), 224 states have return successors, (922), 646 states have call predecessors, (922), 615 states have call successors, (922) [2022-11-20 09:28:27,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11851 states to 11851 states and 19377 transitions. [2022-11-20 09:28:27,785 INFO L78 Accepts]: Start accepts. Automaton has 11851 states and 19377 transitions. Word has length 156 [2022-11-20 09:28:27,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:27,786 INFO L495 AbstractCegarLoop]: Abstraction has 11851 states and 19377 transitions. [2022-11-20 09:28:27,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 09:28:27,787 INFO L276 IsEmpty]: Start isEmpty. Operand 11851 states and 19377 transitions. [2022-11-20 09:28:27,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-20 09:28:27,795 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:27,795 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:27,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 09:28:27,796 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:27,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:27,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1153948343, now seen corresponding path program 1 times [2022-11-20 09:28:27,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:27,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238444520] [2022-11-20 09:28:27,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:27,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:27,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:27,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 09:28:27,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:27,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 09:28:27,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:28,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 09:28:28,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:28,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-20 09:28:28,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:28,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-20 09:28:28,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:28,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:28,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:28,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238444520] [2022-11-20 09:28:28,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238444520] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:28,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:28,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:28:28,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730551903] [2022-11-20 09:28:28,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:28,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:28:28,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:28,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:28:28,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:28:28,081 INFO L87 Difference]: Start difference. First operand 11851 states and 19377 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 09:28:35,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:35,439 INFO L93 Difference]: Finished difference Result 37754 states and 61183 transitions. [2022-11-20 09:28:35,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 09:28:35,440 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2022-11-20 09:28:35,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:35,541 INFO L225 Difference]: With dead ends: 37754 [2022-11-20 09:28:35,541 INFO L226 Difference]: Without dead ends: 28044 [2022-11-20 09:28:35,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 09:28:35,582 INFO L413 NwaCegarLoop]: 4440 mSDtfsCounter, 5233 mSDsluCounter, 17450 mSDsCounter, 0 mSdLazyCounter, 3152 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5250 SdHoareTripleChecker+Valid, 21890 SdHoareTripleChecker+Invalid, 3218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 3152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:35,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5250 Valid, 21890 Invalid, 3218 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [66 Valid, 3152 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-20 09:28:35,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28044 states. [2022-11-20 09:28:38,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28044 to 21581. [2022-11-20 09:28:38,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21581 states, 19908 states have (on average 1.593128390596745) internal successors, (31716), 19974 states have internal predecessors, (31716), 1223 states have call successors, (1223), 384 states have call predecessors, (1223), 448 states have return successors, (2080), 1286 states have call predecessors, (2080), 1223 states have call successors, (2080) [2022-11-20 09:28:38,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21581 states to 21581 states and 35019 transitions. [2022-11-20 09:28:38,293 INFO L78 Accepts]: Start accepts. Automaton has 21581 states and 35019 transitions. Word has length 156 [2022-11-20 09:28:38,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:38,294 INFO L495 AbstractCegarLoop]: Abstraction has 21581 states and 35019 transitions. [2022-11-20 09:28:38,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 09:28:38,294 INFO L276 IsEmpty]: Start isEmpty. Operand 21581 states and 35019 transitions. [2022-11-20 09:28:38,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-20 09:28:38,307 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:38,307 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:38,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 09:28:38,308 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:38,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:38,309 INFO L85 PathProgramCache]: Analyzing trace with hash 205896377, now seen corresponding path program 1 times [2022-11-20 09:28:38,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:38,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641141391] [2022-11-20 09:28:38,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:38,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:38,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:38,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 09:28:38,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:38,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 09:28:38,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:38,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 09:28:38,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:38,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-20 09:28:38,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:38,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-20 09:28:38,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:38,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:38,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:38,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641141391] [2022-11-20 09:28:38,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641141391] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:38,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:38,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:28:38,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953671429] [2022-11-20 09:28:38,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:38,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:28:38,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:38,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:28:38,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:28:38,573 INFO L87 Difference]: Start difference. First operand 21581 states and 35019 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 09:28:44,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:44,216 INFO L93 Difference]: Finished difference Result 47941 states and 78380 transitions. [2022-11-20 09:28:44,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:28:44,217 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2022-11-20 09:28:44,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:44,332 INFO L225 Difference]: With dead ends: 47941 [2022-11-20 09:28:44,332 INFO L226 Difference]: Without dead ends: 28499 [2022-11-20 09:28:44,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-20 09:28:44,384 INFO L413 NwaCegarLoop]: 4216 mSDtfsCounter, 4929 mSDsluCounter, 16635 mSDsCounter, 0 mSdLazyCounter, 1540 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4947 SdHoareTripleChecker+Valid, 20851 SdHoareTripleChecker+Invalid, 1602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:44,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4947 Valid, 20851 Invalid, 1602 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 1540 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-20 09:28:44,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28499 states. [2022-11-20 09:28:47,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28499 to 21581. [2022-11-20 09:28:47,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21581 states, 19908 states have (on average 1.5898633715089412) internal successors, (31651), 19974 states have internal predecessors, (31651), 1223 states have call successors, (1223), 384 states have call predecessors, (1223), 448 states have return successors, (2080), 1286 states have call predecessors, (2080), 1223 states have call successors, (2080) [2022-11-20 09:28:47,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21581 states to 21581 states and 34954 transitions. [2022-11-20 09:28:47,127 INFO L78 Accepts]: Start accepts. Automaton has 21581 states and 34954 transitions. Word has length 156 [2022-11-20 09:28:47,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:28:47,127 INFO L495 AbstractCegarLoop]: Abstraction has 21581 states and 34954 transitions. [2022-11-20 09:28:47,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 09:28:47,128 INFO L276 IsEmpty]: Start isEmpty. Operand 21581 states and 34954 transitions. [2022-11-20 09:28:47,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-20 09:28:47,145 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:28:47,146 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:28:47,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 09:28:47,146 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:28:47,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:47,147 INFO L85 PathProgramCache]: Analyzing trace with hash -378875273, now seen corresponding path program 1 times [2022-11-20 09:28:47,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:47,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748960185] [2022-11-20 09:28:47,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:47,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:47,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:47,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 09:28:47,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:47,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 09:28:47,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:47,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 09:28:47,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:47,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-20 09:28:47,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:47,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-20 09:28:47,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:47,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:47,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:47,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748960185] [2022-11-20 09:28:47,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748960185] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:47,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:47,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:28:47,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151299925] [2022-11-20 09:28:47,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:47,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:28:47,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:47,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:28:47,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:28:47,468 INFO L87 Difference]: Start difference. First operand 21581 states and 34954 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 09:28:58,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:28:58,422 INFO L93 Difference]: Finished difference Result 73117 states and 118447 transitions. [2022-11-20 09:28:58,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 09:28:58,423 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2022-11-20 09:28:58,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:28:58,655 INFO L225 Difference]: With dead ends: 73117 [2022-11-20 09:28:58,656 INFO L226 Difference]: Without dead ends: 53677 [2022-11-20 09:28:58,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 09:28:58,725 INFO L413 NwaCegarLoop]: 4440 mSDtfsCounter, 5265 mSDsluCounter, 17450 mSDsCounter, 0 mSdLazyCounter, 3032 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5282 SdHoareTripleChecker+Valid, 21890 SdHoareTripleChecker+Invalid, 3098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 3032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-20 09:28:58,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5282 Valid, 21890 Invalid, 3098 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [66 Valid, 3032 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-20 09:28:58,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53677 states. [2022-11-20 09:29:04,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53677 to 41230. [2022-11-20 09:29:04,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41230 states, 37893 states have (on average 1.5734304488955744) internal successors, (59622), 38023 states have internal predecessors, (59622), 2439 states have call successors, (2439), 768 states have call predecessors, (2439), 896 states have return successors, (4882), 2566 states have call predecessors, (4882), 2439 states have call successors, (4882) [2022-11-20 09:29:04,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41230 states to 41230 states and 66943 transitions. [2022-11-20 09:29:04,329 INFO L78 Accepts]: Start accepts. Automaton has 41230 states and 66943 transitions. Word has length 156 [2022-11-20 09:29:04,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:29:04,329 INFO L495 AbstractCegarLoop]: Abstraction has 41230 states and 66943 transitions. [2022-11-20 09:29:04,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 09:29:04,330 INFO L276 IsEmpty]: Start isEmpty. Operand 41230 states and 66943 transitions. [2022-11-20 09:29:04,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-20 09:29:04,354 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:29:04,354 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:29:04,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 09:29:04,355 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:29:04,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:04,355 INFO L85 PathProgramCache]: Analyzing trace with hash -808533579, now seen corresponding path program 1 times [2022-11-20 09:29:04,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:04,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825895542] [2022-11-20 09:29:04,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:04,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:04,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:04,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 09:29:04,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:04,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 09:29:04,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:04,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 09:29:04,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:04,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-20 09:29:04,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:04,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-20 09:29:04,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:04,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:04,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:04,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825895542] [2022-11-20 09:29:04,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825895542] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:04,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:29:04,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:29:04,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819443444] [2022-11-20 09:29:04,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:04,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:29:04,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:04,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:29:04,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:29:04,592 INFO L87 Difference]: Start difference. First operand 41230 states and 66943 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 09:29:22,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:29:22,179 INFO L93 Difference]: Finished difference Result 144096 states and 235584 transitions. [2022-11-20 09:29:22,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 09:29:22,180 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2022-11-20 09:29:22,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:29:22,659 INFO L225 Difference]: With dead ends: 144096 [2022-11-20 09:29:22,660 INFO L226 Difference]: Without dead ends: 105007 [2022-11-20 09:29:22,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 09:29:22,811 INFO L413 NwaCegarLoop]: 4414 mSDtfsCounter, 5291 mSDsluCounter, 17375 mSDsCounter, 0 mSdLazyCounter, 2892 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5308 SdHoareTripleChecker+Valid, 21789 SdHoareTripleChecker+Invalid, 2962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 2892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:29:22,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5308 Valid, 21789 Invalid, 2962 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [70 Valid, 2892 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-20 09:29:22,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105007 states.