./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.06.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e98c2b0-b244-4fe2-b661-ab6e2619a45b/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e98c2b0-b244-4fe2-b661-ab6e2619a45b/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_0e98c2b0-b244-4fe2-b661-ab6e2619a45b/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e98c2b0-b244-4fe2-b661-ab6e2619a45b/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.06.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e98c2b0-b244-4fe2-b661-ab6e2619a45b/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_0e98c2b0-b244-4fe2-b661-ab6e2619a45b/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 0a12aada2256a7483e8803a0f1fb8477c858b141679e1395c89cdfba20292c4b --- 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 11:47:40,119 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:47:40,122 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:47:40,155 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:47:40,155 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:47:40,157 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:47:40,158 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:47:40,160 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:47:40,162 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:47:40,163 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:47:40,164 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:47:40,165 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:47:40,165 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:47:40,167 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:47:40,168 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:47:40,169 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:47:40,170 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:47:40,171 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:47:40,173 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:47:40,175 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:47:40,176 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:47:40,179 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:47:40,180 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:47:40,181 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:47:40,185 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:47:40,185 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:47:40,185 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:47:40,187 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:47:40,187 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:47:40,188 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:47:40,189 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:47:40,190 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:47:40,191 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:47:40,191 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:47:40,193 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:47:40,193 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:47:40,203 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:47:40,204 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:47:40,204 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:47:40,207 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:47:40,209 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:47:40,210 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e98c2b0-b244-4fe2-b661-ab6e2619a45b/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:47:40,258 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:47:40,258 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:47:40,258 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:47:40,259 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:47:40,259 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:47:40,260 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:47:40,260 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:47:40,260 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:47:40,261 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:47:40,261 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:47:40,266 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:47:40,266 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:47:40,267 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:47:40,267 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:47:40,267 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:47:40,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:47:40,267 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:47:40,268 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:47:40,268 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:47:40,268 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:47:40,268 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:47:40,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:47:40,269 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:47:40,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:47:40,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:47:40,270 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:47:40,270 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:47:40,270 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:47:40,271 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:47:40,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:47:40,272 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:47:40,272 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:47:40,272 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:47:40,272 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_0e98c2b0-b244-4fe2-b661-ab6e2619a45b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e98c2b0-b244-4fe2-b661-ab6e2619a45b/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a12aada2256a7483e8803a0f1fb8477c858b141679e1395c89cdfba20292c4b [2022-11-20 11:47:40,553 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:47:40,577 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:47:40,580 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:47:40,582 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:47:40,583 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:47:40,584 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e98c2b0-b244-4fe2-b661-ab6e2619a45b/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.06.cil-1.c [2022-11-20 11:47:44,001 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:47:44,412 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:47:44,426 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e98c2b0-b244-4fe2-b661-ab6e2619a45b/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.06.cil-1.c [2022-11-20 11:47:44,453 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e98c2b0-b244-4fe2-b661-ab6e2619a45b/bin/uautomizer-ug76WZFUDN/data/9f6368b85/6aef355bdad24b4497727e974a082a96/FLAG85e64cc0d [2022-11-20 11:47:44,475 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e98c2b0-b244-4fe2-b661-ab6e2619a45b/bin/uautomizer-ug76WZFUDN/data/9f6368b85/6aef355bdad24b4497727e974a082a96 [2022-11-20 11:47:44,478 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:47:44,480 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:47:44,482 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:47:44,482 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:47:44,496 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:47:44,497 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:47:44" (1/1) ... [2022-11-20 11:47:44,499 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@341f1070 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:44, skipping insertion in model container [2022-11-20 11:47:44,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:47:44" (1/1) ... [2022-11-20 11:47:44,509 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:47:44,568 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:47:44,737 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_0e98c2b0-b244-4fe2-b661-ab6e2619a45b/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.06.cil-1.c[911,924] [2022-11-20 11:47:44,811 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_0e98c2b0-b244-4fe2-b661-ab6e2619a45b/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.06.cil-1.c[8416,8429] [2022-11-20 11:47:44,890 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:47:44,905 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:47:44,919 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_0e98c2b0-b244-4fe2-b661-ab6e2619a45b/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.06.cil-1.c[911,924] [2022-11-20 11:47:44,946 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_0e98c2b0-b244-4fe2-b661-ab6e2619a45b/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.06.cil-1.c[8416,8429] [2022-11-20 11:47:45,006 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:47:45,045 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:47:45,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:45 WrapperNode [2022-11-20 11:47:45,046 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:47:45,047 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:47:45,048 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:47:45,048 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:47:45,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:45" (1/1) ... [2022-11-20 11:47:45,070 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:45" (1/1) ... [2022-11-20 11:47:45,123 INFO L138 Inliner]: procedures = 67, calls = 80, calls flagged for inlining = 35, calls inlined = 35, statements flattened = 735 [2022-11-20 11:47:45,123 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:47:45,124 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:47:45,124 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:47:45,125 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:47:45,136 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:45" (1/1) ... [2022-11-20 11:47:45,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:45" (1/1) ... [2022-11-20 11:47:45,141 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:45" (1/1) ... [2022-11-20 11:47:45,141 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:45" (1/1) ... [2022-11-20 11:47:45,157 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:45" (1/1) ... [2022-11-20 11:47:45,173 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:45" (1/1) ... [2022-11-20 11:47:45,176 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:45" (1/1) ... [2022-11-20 11:47:45,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:45" (1/1) ... [2022-11-20 11:47:45,185 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:47:45,187 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:47:45,187 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:47:45,187 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:47:45,188 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:45" (1/1) ... [2022-11-20 11:47:45,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:47:45,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e98c2b0-b244-4fe2-b661-ab6e2619a45b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:47:45,222 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e98c2b0-b244-4fe2-b661-ab6e2619a45b/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:47:45,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e98c2b0-b244-4fe2-b661-ab6e2619a45b/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:47:45,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:47:45,268 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-20 11:47:45,268 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-20 11:47:45,268 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-11-20 11:47:45,268 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-11-20 11:47:45,268 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-11-20 11:47:45,269 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-11-20 11:47:45,269 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-11-20 11:47:45,269 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-11-20 11:47:45,269 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-11-20 11:47:45,269 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-11-20 11:47:45,270 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-11-20 11:47:45,270 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-11-20 11:47:45,270 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-11-20 11:47:45,270 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-11-20 11:47:45,270 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-11-20 11:47:45,271 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-11-20 11:47:45,271 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-11-20 11:47:45,271 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-11-20 11:47:45,271 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-11-20 11:47:45,271 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-11-20 11:47:45,272 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-11-20 11:47:45,272 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-11-20 11:47:45,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:47:45,272 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-11-20 11:47:45,272 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-11-20 11:47:45,272 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-11-20 11:47:45,273 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-11-20 11:47:45,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:47:45,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:47:45,273 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-11-20 11:47:45,273 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-11-20 11:47:45,274 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2022-11-20 11:47:45,274 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2022-11-20 11:47:45,456 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:47:45,459 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:47:46,600 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2022-11-20 11:47:46,601 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2022-11-20 11:47:46,741 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:47:46,754 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:47:46,754 INFO L300 CfgBuilder]: Removed 13 assume(true) statements. [2022-11-20 11:47:46,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:47:46 BoogieIcfgContainer [2022-11-20 11:47:46,758 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:47:46,760 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:47:46,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:47:46,764 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:47:46,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:47:44" (1/3) ... [2022-11-20 11:47:46,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@183aa775 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:47:46, skipping insertion in model container [2022-11-20 11:47:46,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:47:45" (2/3) ... [2022-11-20 11:47:46,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@183aa775 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:47:46, skipping insertion in model container [2022-11-20 11:47:46,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:47:46" (3/3) ... [2022-11-20 11:47:46,767 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.06.cil-1.c [2022-11-20 11:47:46,788 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:47:46,789 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-20 11:47:46,860 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:47:46,868 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;@4f609a85, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:47:46,868 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-20 11:47:46,877 INFO L276 IsEmpty]: Start isEmpty. Operand has 357 states, 301 states have (on average 1.611295681063123) internal successors, (485), 309 states have internal predecessors, (485), 38 states have call successors, (38), 15 states have call predecessors, (38), 15 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) [2022-11-20 11:47:46,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-20 11:47:46,891 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:47:46,892 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] [2022-11-20 11:47:46,893 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:47:46,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:46,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1638147849, now seen corresponding path program 1 times [2022-11-20 11:47:46,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:46,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591463917] [2022-11-20 11:47:46,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:46,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:47,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:47,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:47:47,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:47,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:47:47,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:47,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:47:47,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:47,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:47:47,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:47,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 11:47:47,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:47,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:47:47,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:47,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-20 11:47:47,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:47,794 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 11:47:47,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:47,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591463917] [2022-11-20 11:47:47,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591463917] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:47,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:47:47,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 11:47:47,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601093825] [2022-11-20 11:47:47,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:47,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:47:47,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:47,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:47:47,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:47:47,871 INFO L87 Difference]: Start difference. First operand has 357 states, 301 states have (on average 1.611295681063123) internal successors, (485), 309 states have internal predecessors, (485), 38 states have call successors, (38), 15 states have call predecessors, (38), 15 states have return successors, (38), 36 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-20 11:47:49,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:47:49,902 INFO L93 Difference]: Finished difference Result 842 states and 1321 transitions. [2022-11-20 11:47:49,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:47:49,906 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-11-20 11:47:49,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:47:49,924 INFO L225 Difference]: With dead ends: 842 [2022-11-20 11:47:49,924 INFO L226 Difference]: Without dead ends: 497 [2022-11-20 11:47:49,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-11-20 11:47:49,935 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 678 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 1177 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 1823 SdHoareTripleChecker+Invalid, 1309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:47:49,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [685 Valid, 1823 Invalid, 1309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1177 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-20 11:47:49,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2022-11-20 11:47:50,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 458. [2022-11-20 11:47:50,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 383 states have (on average 1.4986945169712793) internal successors, (574), 390 states have internal predecessors, (574), 51 states have call successors, (51), 22 states have call predecessors, (51), 22 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2022-11-20 11:47:50,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 677 transitions. [2022-11-20 11:47:50,057 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 677 transitions. Word has length 65 [2022-11-20 11:47:50,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:47:50,058 INFO L495 AbstractCegarLoop]: Abstraction has 458 states and 677 transitions. [2022-11-20 11:47:50,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-20 11:47:50,059 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 677 transitions. [2022-11-20 11:47:50,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-20 11:47:50,063 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:47:50,063 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] [2022-11-20 11:47:50,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:47:50,064 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:47:50,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:50,065 INFO L85 PathProgramCache]: Analyzing trace with hash -977930807, now seen corresponding path program 1 times [2022-11-20 11:47:50,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:50,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061005346] [2022-11-20 11:47:50,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:50,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:50,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:50,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:47:50,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:50,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:47:50,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:50,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:47:50,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:50,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:47:50,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:50,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 11:47:50,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:50,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:47:50,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:50,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-20 11:47:50,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:50,352 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 11:47:50,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:50,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061005346] [2022-11-20 11:47:50,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061005346] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:50,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:47:50,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 11:47:50,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828799581] [2022-11-20 11:47:50,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:50,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:47:50,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:50,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:47:50,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:47:50,357 INFO L87 Difference]: Start difference. First operand 458 states and 677 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-20 11:47:52,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:47:52,121 INFO L93 Difference]: Finished difference Result 855 states and 1243 transitions. [2022-11-20 11:47:52,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 11:47:52,122 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-11-20 11:47:52,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:47:52,128 INFO L225 Difference]: With dead ends: 855 [2022-11-20 11:47:52,128 INFO L226 Difference]: Without dead ends: 646 [2022-11-20 11:47:52,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:47:52,132 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 1006 mSDsluCounter, 1541 mSDsCounter, 0 mSdLazyCounter, 1452 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1033 SdHoareTripleChecker+Valid, 1914 SdHoareTripleChecker+Invalid, 1581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:47:52,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1033 Valid, 1914 Invalid, 1581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1452 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-20 11:47:52,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2022-11-20 11:47:52,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 570. [2022-11-20 11:47:52,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 473 states have (on average 1.4799154334038056) internal successors, (700), 482 states have internal predecessors, (700), 64 states have call successors, (64), 29 states have call predecessors, (64), 31 states have return successors, (73), 62 states have call predecessors, (73), 60 states have call successors, (73) [2022-11-20 11:47:52,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 837 transitions. [2022-11-20 11:47:52,236 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 837 transitions. Word has length 65 [2022-11-20 11:47:52,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:47:52,236 INFO L495 AbstractCegarLoop]: Abstraction has 570 states and 837 transitions. [2022-11-20 11:47:52,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-20 11:47:52,237 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 837 transitions. [2022-11-20 11:47:52,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-20 11:47:52,248 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:47:52,248 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] [2022-11-20 11:47:52,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:47:52,248 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:47:52,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:52,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1288450379, now seen corresponding path program 1 times [2022-11-20 11:47:52,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:52,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791340197] [2022-11-20 11:47:52,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:52,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:52,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:52,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:47:52,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:52,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:47:52,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:52,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:47:52,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:52,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:47:52,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:52,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 11:47:52,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:52,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:47:52,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:52,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-20 11:47:52,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:52,542 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 11:47:52,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:52,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791340197] [2022-11-20 11:47:52,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791340197] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:52,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:47:52,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 11:47:52,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5701610] [2022-11-20 11:47:52,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:52,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:47:52,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:52,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:47:52,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:47:52,547 INFO L87 Difference]: Start difference. First operand 570 states and 837 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-20 11:47:55,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:47:55,559 INFO L93 Difference]: Finished difference Result 2116 states and 3035 transitions. [2022-11-20 11:47:55,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-20 11:47:55,561 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 65 [2022-11-20 11:47:55,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:47:55,578 INFO L225 Difference]: With dead ends: 2116 [2022-11-20 11:47:55,578 INFO L226 Difference]: Without dead ends: 1783 [2022-11-20 11:47:55,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-11-20 11:47:55,591 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 2860 mSDsluCounter, 1834 mSDsCounter, 0 mSdLazyCounter, 2014 mSolverCounterSat, 596 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2878 SdHoareTripleChecker+Valid, 2242 SdHoareTripleChecker+Invalid, 2610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 596 IncrementalHoareTripleChecker+Valid, 2014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:47:55,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2878 Valid, 2242 Invalid, 2610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [596 Valid, 2014 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-20 11:47:55,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1783 states. [2022-11-20 11:47:55,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1783 to 1623. [2022-11-20 11:47:55,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1623 states, 1321 states have (on average 1.3959121877365632) internal successors, (1844), 1345 states have internal predecessors, (1844), 174 states have call successors, (174), 112 states have call predecessors, (174), 126 states have return successors, (206), 168 states have call predecessors, (206), 170 states have call successors, (206) [2022-11-20 11:47:55,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1623 states to 1623 states and 2224 transitions. [2022-11-20 11:47:55,877 INFO L78 Accepts]: Start accepts. Automaton has 1623 states and 2224 transitions. Word has length 65 [2022-11-20 11:47:55,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:47:55,878 INFO L495 AbstractCegarLoop]: Abstraction has 1623 states and 2224 transitions. [2022-11-20 11:47:55,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-20 11:47:55,878 INFO L276 IsEmpty]: Start isEmpty. Operand 1623 states and 2224 transitions. [2022-11-20 11:47:55,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-20 11:47:55,881 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:47:55,881 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:55,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:47:55,882 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:47:55,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:55,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1688769959, now seen corresponding path program 1 times [2022-11-20 11:47:55,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:55,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481603729] [2022-11-20 11:47:55,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:55,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:55,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:56,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:47:56,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:56,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:47:56,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:56,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:47:56,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:56,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:47:56,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:56,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-20 11:47:56,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:56,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-20 11:47:56,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:56,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 11:47:56,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:56,123 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 11:47:56,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:56,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481603729] [2022-11-20 11:47:56,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481603729] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:56,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:47:56,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 11:47:56,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180377957] [2022-11-20 11:47:56,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:56,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:47:56,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:56,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:47:56,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:47:56,127 INFO L87 Difference]: Start difference. First operand 1623 states and 2224 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-20 11:47:59,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:47:59,151 INFO L93 Difference]: Finished difference Result 5147 states and 7106 transitions. [2022-11-20 11:47:59,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-20 11:47:59,151 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 66 [2022-11-20 11:47:59,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:47:59,165 INFO L225 Difference]: With dead ends: 5147 [2022-11-20 11:47:59,166 INFO L226 Difference]: Without dead ends: 2028 [2022-11-20 11:47:59,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-11-20 11:47:59,187 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 3301 mSDsluCounter, 1557 mSDsCounter, 0 mSdLazyCounter, 1797 mSolverCounterSat, 690 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3319 SdHoareTripleChecker+Valid, 1965 SdHoareTripleChecker+Invalid, 2487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 690 IncrementalHoareTripleChecker+Valid, 1797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:47:59,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3319 Valid, 1965 Invalid, 2487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [690 Valid, 1797 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-20 11:47:59,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2028 states. [2022-11-20 11:47:59,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2028 to 1824. [2022-11-20 11:47:59,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1824 states, 1452 states have (on average 1.3526170798898072) internal successors, (1964), 1478 states have internal predecessors, (1964), 214 states have call successors, (214), 140 states have call predecessors, (214), 156 states have return successors, (250), 208 states have call predecessors, (250), 210 states have call successors, (250) [2022-11-20 11:47:59,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1824 states to 1824 states and 2428 transitions. [2022-11-20 11:47:59,413 INFO L78 Accepts]: Start accepts. Automaton has 1824 states and 2428 transitions. Word has length 66 [2022-11-20 11:47:59,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:47:59,414 INFO L495 AbstractCegarLoop]: Abstraction has 1824 states and 2428 transitions. [2022-11-20 11:47:59,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-20 11:47:59,414 INFO L276 IsEmpty]: Start isEmpty. Operand 1824 states and 2428 transitions. [2022-11-20 11:47:59,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-20 11:47:59,417 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:47:59,417 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:59,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:47:59,417 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:47:59,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:59,418 INFO L85 PathProgramCache]: Analyzing trace with hash -425793394, now seen corresponding path program 1 times [2022-11-20 11:47:59,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:59,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691993323] [2022-11-20 11:47:59,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:59,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:59,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:59,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:47:59,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:59,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:47:59,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:59,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:47:59,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:59,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:47:59,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:59,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-20 11:47:59,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:59,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 11:47:59,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:59,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 11:47:59,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:59,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 11:47:59,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:59,745 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 11:47:59,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:59,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691993323] [2022-11-20 11:47:59,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691993323] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:59,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:47:59,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 11:47:59,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466023393] [2022-11-20 11:47:59,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:59,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 11:47:59,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:59,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 11:47:59,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:47:59,753 INFO L87 Difference]: Start difference. First operand 1824 states and 2428 transitions. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 11:48:01,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:48:01,368 INFO L93 Difference]: Finished difference Result 3647 states and 4869 transitions. [2022-11-20 11:48:01,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 11:48:01,369 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 91 [2022-11-20 11:48:01,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:48:01,381 INFO L225 Difference]: With dead ends: 3647 [2022-11-20 11:48:01,381 INFO L226 Difference]: Without dead ends: 2066 [2022-11-20 11:48:01,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-11-20 11:48:01,388 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 625 mSDsluCounter, 1523 mSDsCounter, 0 mSdLazyCounter, 1351 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 1826 SdHoareTripleChecker+Invalid, 1479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:48:01,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 1826 Invalid, 1479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1351 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-20 11:48:01,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2066 states. [2022-11-20 11:48:01,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2066 to 1884. [2022-11-20 11:48:01,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1884 states, 1500 states have (on average 1.3373333333333333) internal successors, (2006), 1526 states have internal predecessors, (2006), 214 states have call successors, (214), 140 states have call predecessors, (214), 168 states have return successors, (262), 220 states have call predecessors, (262), 210 states have call successors, (262) [2022-11-20 11:48:01,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1884 states to 1884 states and 2482 transitions. [2022-11-20 11:48:01,601 INFO L78 Accepts]: Start accepts. Automaton has 1884 states and 2482 transitions. Word has length 91 [2022-11-20 11:48:01,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:48:01,602 INFO L495 AbstractCegarLoop]: Abstraction has 1884 states and 2482 transitions. [2022-11-20 11:48:01,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 11:48:01,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1884 states and 2482 transitions. [2022-11-20 11:48:01,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-20 11:48:01,611 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:48:01,613 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:48:01,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:48:01,614 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:48:01,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:01,615 INFO L85 PathProgramCache]: Analyzing trace with hash 18107280, now seen corresponding path program 1 times [2022-11-20 11:48:01,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:48:01,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721836225] [2022-11-20 11:48:01,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:01,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:48:01,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:01,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:48:01,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:01,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:48:01,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:01,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:48:01,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:01,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:48:01,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:01,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-20 11:48:01,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:01,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 11:48:01,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:01,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 11:48:01,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:01,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 11:48:01,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:01,900 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 11:48:01,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:48:01,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721836225] [2022-11-20 11:48:01,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721836225] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:48:01,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:48:01,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 11:48:01,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203805563] [2022-11-20 11:48:01,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:48:01,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:48:01,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:48:01,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:48:01,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:48:01,907 INFO L87 Difference]: Start difference. First operand 1884 states and 2482 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-20 11:48:03,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:48:03,606 INFO L93 Difference]: Finished difference Result 3444 states and 4533 transitions. [2022-11-20 11:48:03,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 11:48:03,606 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 91 [2022-11-20 11:48:03,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:48:03,617 INFO L225 Difference]: With dead ends: 3444 [2022-11-20 11:48:03,617 INFO L226 Difference]: Without dead ends: 2036 [2022-11-20 11:48:03,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:48:03,623 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 1239 mSDsluCounter, 1055 mSDsCounter, 0 mSdLazyCounter, 1286 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1264 SdHoareTripleChecker+Valid, 1365 SdHoareTripleChecker+Invalid, 1496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 1286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:48:03,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1264 Valid, 1365 Invalid, 1496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 1286 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-20 11:48:03,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2036 states. [2022-11-20 11:48:03,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2036 to 1668. [2022-11-20 11:48:03,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1668 states, 1336 states have (on average 1.341317365269461) internal successors, (1792), 1357 states have internal predecessors, (1792), 186 states have call successors, (186), 121 states have call predecessors, (186), 144 states have return successors, (223), 191 states have call predecessors, (223), 182 states have call successors, (223) [2022-11-20 11:48:03,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1668 states to 1668 states and 2201 transitions. [2022-11-20 11:48:03,796 INFO L78 Accepts]: Start accepts. Automaton has 1668 states and 2201 transitions. Word has length 91 [2022-11-20 11:48:03,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:48:03,797 INFO L495 AbstractCegarLoop]: Abstraction has 1668 states and 2201 transitions. [2022-11-20 11:48:03,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-20 11:48:03,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1668 states and 2201 transitions. [2022-11-20 11:48:03,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-20 11:48:03,799 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:48:03,799 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:48:03,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:48:03,800 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:48:03,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:03,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1957269326, now seen corresponding path program 1 times [2022-11-20 11:48:03,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:48:03,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428660545] [2022-11-20 11:48:03,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:03,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:48:03,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:03,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:48:03,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:03,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:48:03,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:03,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:48:03,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:03,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:48:03,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:03,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-20 11:48:03,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:03,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 11:48:03,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:03,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 11:48:03,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:03,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 11:48:03,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:03,990 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:48:03,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:48:03,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428660545] [2022-11-20 11:48:03,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428660545] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:48:03,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:48:03,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:48:03,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108226977] [2022-11-20 11:48:03,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:48:03,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:48:03,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:48:03,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:48:03,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:48:03,994 INFO L87 Difference]: Start difference. First operand 1668 states and 2201 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-20 11:48:05,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:48:05,191 INFO L93 Difference]: Finished difference Result 4810 states and 6369 transitions. [2022-11-20 11:48:05,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 11:48:05,192 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 91 [2022-11-20 11:48:05,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:48:05,210 INFO L225 Difference]: With dead ends: 4810 [2022-11-20 11:48:05,210 INFO L226 Difference]: Without dead ends: 3386 [2022-11-20 11:48:05,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:48:05,217 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 1402 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1430 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:48:05,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1430 Valid, 894 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 11:48:05,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3386 states. [2022-11-20 11:48:05,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3386 to 3092. [2022-11-20 11:48:05,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3092 states, 2449 states have (on average 1.3033891384238465) internal successors, (3192), 2499 states have internal predecessors, (3192), 347 states have call successors, (347), 234 states have call predecessors, (347), 294 states have return successors, (497), 361 states have call predecessors, (497), 343 states have call successors, (497) [2022-11-20 11:48:05,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 4036 transitions. [2022-11-20 11:48:05,546 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 4036 transitions. Word has length 91 [2022-11-20 11:48:05,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:48:05,546 INFO L495 AbstractCegarLoop]: Abstraction has 3092 states and 4036 transitions. [2022-11-20 11:48:05,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-20 11:48:05,547 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 4036 transitions. [2022-11-20 11:48:05,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-20 11:48:05,549 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:48:05,550 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:48:05,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:48:05,550 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:48:05,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:05,551 INFO L85 PathProgramCache]: Analyzing trace with hash 899431248, now seen corresponding path program 1 times [2022-11-20 11:48:05,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:48:05,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943773035] [2022-11-20 11:48:05,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:05,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:48:05,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:05,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:48:05,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:05,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:48:05,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:05,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:48:05,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:05,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:48:05,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:05,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-20 11:48:05,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:05,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 11:48:05,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:05,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 11:48:05,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:05,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 11:48:05,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:05,670 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 11:48:05,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:48:05,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943773035] [2022-11-20 11:48:05,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943773035] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:48:05,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:48:05,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:48:05,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565925956] [2022-11-20 11:48:05,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:48:05,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:48:05,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:48:05,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:48:05,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:48:05,675 INFO L87 Difference]: Start difference. First operand 3092 states and 4036 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-20 11:48:06,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:48:06,591 INFO L93 Difference]: Finished difference Result 4663 states and 6036 transitions. [2022-11-20 11:48:06,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:48:06,592 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 91 [2022-11-20 11:48:06,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:48:06,606 INFO L225 Difference]: With dead ends: 4663 [2022-11-20 11:48:06,606 INFO L226 Difference]: Without dead ends: 1815 [2022-11-20 11:48:06,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:48:06,616 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 538 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 1162 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:48:06,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [554 Valid, 1162 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 11:48:06,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1815 states. [2022-11-20 11:48:06,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1815 to 1668. [2022-11-20 11:48:06,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1668 states, 1336 states have (on average 1.313622754491018) internal successors, (1755), 1357 states have internal predecessors, (1755), 186 states have call successors, (186), 121 states have call predecessors, (186), 144 states have return successors, (223), 191 states have call predecessors, (223), 182 states have call successors, (223) [2022-11-20 11:48:06,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1668 states to 1668 states and 2164 transitions. [2022-11-20 11:48:06,830 INFO L78 Accepts]: Start accepts. Automaton has 1668 states and 2164 transitions. Word has length 91 [2022-11-20 11:48:06,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:48:06,831 INFO L495 AbstractCegarLoop]: Abstraction has 1668 states and 2164 transitions. [2022-11-20 11:48:06,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-20 11:48:06,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1668 states and 2164 transitions. [2022-11-20 11:48:06,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-20 11:48:06,834 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:48:06,834 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:48:06,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:48:06,835 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:48:06,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:06,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1793087749, now seen corresponding path program 1 times [2022-11-20 11:48:06,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:48:06,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688118472] [2022-11-20 11:48:06,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:06,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:48:06,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:07,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:48:07,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:07,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:48:07,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:07,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:48:07,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:07,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:48:07,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:07,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-20 11:48:07,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:07,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 11:48:07,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:07,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 11:48:07,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:07,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-20 11:48:07,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:07,123 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 11:48:07,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:48:07,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688118472] [2022-11-20 11:48:07,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688118472] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:48:07,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:48:07,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 11:48:07,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482786157] [2022-11-20 11:48:07,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:48:07,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 11:48:07,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:48:07,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 11:48:07,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:48:07,128 INFO L87 Difference]: Start difference. First operand 1668 states and 2164 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 11:48:09,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:48:09,339 INFO L93 Difference]: Finished difference Result 4604 states and 5968 transitions. [2022-11-20 11:48:09,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-20 11:48:09,339 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 92 [2022-11-20 11:48:09,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:48:09,360 INFO L225 Difference]: With dead ends: 4604 [2022-11-20 11:48:09,360 INFO L226 Difference]: Without dead ends: 3180 [2022-11-20 11:48:09,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2022-11-20 11:48:09,368 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 1628 mSDsluCounter, 1346 mSDsCounter, 0 mSdLazyCounter, 1508 mSolverCounterSat, 364 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1665 SdHoareTripleChecker+Valid, 1666 SdHoareTripleChecker+Invalid, 1872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 364 IncrementalHoareTripleChecker+Valid, 1508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:48:09,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1665 Valid, 1666 Invalid, 1872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [364 Valid, 1508 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-20 11:48:09,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3180 states. [2022-11-20 11:48:09,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3180 to 3018. [2022-11-20 11:48:09,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3018 states, 2364 states have (on average 1.259306260575296) internal successors, (2977), 2407 states have internal predecessors, (2977), 358 states have call successors, (358), 228 states have call predecessors, (358), 294 states have return successors, (500), 385 states have call predecessors, (500), 354 states have call successors, (500) [2022-11-20 11:48:09,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3018 states to 3018 states and 3835 transitions. [2022-11-20 11:48:09,755 INFO L78 Accepts]: Start accepts. Automaton has 3018 states and 3835 transitions. Word has length 92 [2022-11-20 11:48:09,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:48:09,756 INFO L495 AbstractCegarLoop]: Abstraction has 3018 states and 3835 transitions. [2022-11-20 11:48:09,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 11:48:09,756 INFO L276 IsEmpty]: Start isEmpty. Operand 3018 states and 3835 transitions. [2022-11-20 11:48:09,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-20 11:48:09,760 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:48:09,760 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] [2022-11-20 11:48:09,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:48:09,761 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:48:09,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:09,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1409205542, now seen corresponding path program 1 times [2022-11-20 11:48:09,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:48:09,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875917479] [2022-11-20 11:48:09,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:09,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:48:09,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:09,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:48:09,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:09,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 11:48:09,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:09,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 11:48:09,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:09,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 11:48:09,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:09,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-20 11:48:09,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:09,891 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 11:48:09,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:48:09,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875917479] [2022-11-20 11:48:09,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875917479] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:48:09,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:48:09,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:48:09,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282689582] [2022-11-20 11:48:09,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:48:09,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:48:09,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:48:09,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:48:09,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:48:09,895 INFO L87 Difference]: Start difference. First operand 3018 states and 3835 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:48:11,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:48:11,923 INFO L93 Difference]: Finished difference Result 3319 states and 4313 transitions. [2022-11-20 11:48:11,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:48:11,924 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2022-11-20 11:48:11,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:48:11,943 INFO L225 Difference]: With dead ends: 3319 [2022-11-20 11:48:11,944 INFO L226 Difference]: Without dead ends: 3094 [2022-11-20 11:48:11,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:48:11,948 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 709 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:48:11,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [727 Valid, 757 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-20 11:48:11,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3094 states. [2022-11-20 11:48:12,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3094 to 3018. [2022-11-20 11:48:12,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3018 states, 2364 states have (on average 1.2588832487309645) internal successors, (2976), 2407 states have internal predecessors, (2976), 358 states have call successors, (358), 228 states have call predecessors, (358), 294 states have return successors, (500), 385 states have call predecessors, (500), 354 states have call successors, (500) [2022-11-20 11:48:12,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3018 states to 3018 states and 3834 transitions. [2022-11-20 11:48:12,544 INFO L78 Accepts]: Start accepts. Automaton has 3018 states and 3834 transitions. Word has length 113 [2022-11-20 11:48:12,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:48:12,545 INFO L495 AbstractCegarLoop]: Abstraction has 3018 states and 3834 transitions. [2022-11-20 11:48:12,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:48:12,545 INFO L276 IsEmpty]: Start isEmpty. Operand 3018 states and 3834 transitions. [2022-11-20 11:48:12,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-20 11:48:12,549 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:48:12,549 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] [2022-11-20 11:48:12,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 11:48:12,549 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:48:12,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:12,552 INFO L85 PathProgramCache]: Analyzing trace with hash 457503132, now seen corresponding path program 1 times [2022-11-20 11:48:12,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:48:12,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945368648] [2022-11-20 11:48:12,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:12,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:48:12,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:12,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:48:12,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:12,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 11:48:12,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:12,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 11:48:12,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:12,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 11:48:12,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:12,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-20 11:48:12,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:12,791 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 11:48:12,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:48:12,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945368648] [2022-11-20 11:48:12,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945368648] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:48:12,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:48:12,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:48:12,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500816634] [2022-11-20 11:48:12,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:48:12,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:48:12,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:48:12,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:48:12,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:48:12,794 INFO L87 Difference]: Start difference. First operand 3018 states and 3834 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:48:16,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:48:16,538 INFO L93 Difference]: Finished difference Result 3629 states and 4814 transitions. [2022-11-20 11:48:16,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:48:16,539 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2022-11-20 11:48:16,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:48:16,556 INFO L225 Difference]: With dead ends: 3629 [2022-11-20 11:48:16,557 INFO L226 Difference]: Without dead ends: 3409 [2022-11-20 11:48:16,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:48:16,560 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 1108 mSDsluCounter, 1433 mSDsCounter, 0 mSdLazyCounter, 2272 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1133 SdHoareTripleChecker+Valid, 1867 SdHoareTripleChecker+Invalid, 2372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 2272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:48:16,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1133 Valid, 1867 Invalid, 2372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 2272 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-20 11:48:16,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3409 states. [2022-11-20 11:48:17,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3409 to 3246. [2022-11-20 11:48:17,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3246 states, 2567 states have (on average 1.2843786521231009) internal successors, (3297), 2612 states have internal predecessors, (3297), 375 states have call successors, (375), 234 states have call predecessors, (375), 302 states have return successors, (524), 403 states have call predecessors, (524), 371 states have call successors, (524) [2022-11-20 11:48:17,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3246 states to 3246 states and 4196 transitions. [2022-11-20 11:48:17,174 INFO L78 Accepts]: Start accepts. Automaton has 3246 states and 4196 transitions. Word has length 113 [2022-11-20 11:48:17,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:48:17,175 INFO L495 AbstractCegarLoop]: Abstraction has 3246 states and 4196 transitions. [2022-11-20 11:48:17,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:48:17,176 INFO L276 IsEmpty]: Start isEmpty. Operand 3246 states and 4196 transitions. [2022-11-20 11:48:17,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-20 11:48:17,179 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:48:17,180 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] [2022-11-20 11:48:17,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 11:48:17,180 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:48:17,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:17,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1808888350, now seen corresponding path program 1 times [2022-11-20 11:48:17,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:48:17,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180041205] [2022-11-20 11:48:17,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:17,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:48:17,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:17,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:48:17,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:17,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 11:48:17,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:17,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 11:48:17,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:17,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 11:48:17,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:17,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-20 11:48:17,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:17,469 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 11:48:17,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:48:17,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180041205] [2022-11-20 11:48:17,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180041205] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:48:17,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:48:17,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:48:17,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743301155] [2022-11-20 11:48:17,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:48:17,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:48:17,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:48:17,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:48:17,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:48:17,483 INFO L87 Difference]: Start difference. First operand 3246 states and 4196 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:48:21,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:48:21,134 INFO L93 Difference]: Finished difference Result 4403 states and 6036 transitions. [2022-11-20 11:48:21,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:48:21,136 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2022-11-20 11:48:21,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:48:21,156 INFO L225 Difference]: With dead ends: 4403 [2022-11-20 11:48:21,157 INFO L226 Difference]: Without dead ends: 3957 [2022-11-20 11:48:21,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:48:21,161 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 1092 mSDsluCounter, 1433 mSDsCounter, 0 mSdLazyCounter, 2369 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1117 SdHoareTripleChecker+Valid, 1868 SdHoareTripleChecker+Invalid, 2471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 2369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:48:21,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1117 Valid, 1868 Invalid, 2471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 2369 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-20 11:48:21,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3957 states. [2022-11-20 11:48:21,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3957 to 3666. [2022-11-20 11:48:21,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3666 states, 2943 states have (on average 1.3183826027862726) internal successors, (3880), 2990 states have internal predecessors, (3880), 405 states have call successors, (405), 246 states have call predecessors, (405), 316 states have return successors, (564), 435 states have call predecessors, (564), 401 states have call successors, (564) [2022-11-20 11:48:21,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3666 states to 3666 states and 4849 transitions. [2022-11-20 11:48:21,807 INFO L78 Accepts]: Start accepts. Automaton has 3666 states and 4849 transitions. Word has length 113 [2022-11-20 11:48:21,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:48:21,807 INFO L495 AbstractCegarLoop]: Abstraction has 3666 states and 4849 transitions. [2022-11-20 11:48:21,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:48:21,808 INFO L276 IsEmpty]: Start isEmpty. Operand 3666 states and 4849 transitions. [2022-11-20 11:48:21,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-20 11:48:21,811 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:48:21,811 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] [2022-11-20 11:48:21,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 11:48:21,812 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:48:21,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:21,813 INFO L85 PathProgramCache]: Analyzing trace with hash 189913436, now seen corresponding path program 1 times [2022-11-20 11:48:21,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:48:21,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851189549] [2022-11-20 11:48:21,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:21,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:48:21,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:21,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:48:21,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:21,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 11:48:21,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:22,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 11:48:22,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:22,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 11:48:22,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:22,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-20 11:48:22,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:22,035 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 11:48:22,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:48:22,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851189549] [2022-11-20 11:48:22,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851189549] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:48:22,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:48:22,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:48:22,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524348959] [2022-11-20 11:48:22,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:48:22,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:48:22,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:48:22,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:48:22,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:48:22,038 INFO L87 Difference]: Start difference. First operand 3666 states and 4849 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:48:25,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:48:25,740 INFO L93 Difference]: Finished difference Result 5917 states and 8421 transitions. [2022-11-20 11:48:25,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:48:25,740 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2022-11-20 11:48:25,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:48:25,763 INFO L225 Difference]: With dead ends: 5917 [2022-11-20 11:48:25,763 INFO L226 Difference]: Without dead ends: 5051 [2022-11-20 11:48:25,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:48:25,768 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 1092 mSDsluCounter, 1433 mSDsCounter, 0 mSdLazyCounter, 2365 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1117 SdHoareTripleChecker+Valid, 1868 SdHoareTripleChecker+Invalid, 2467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 2365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:48:25,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1117 Valid, 1868 Invalid, 2467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 2365 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-20 11:48:25,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5051 states. [2022-11-20 11:48:26,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5051 to 4508. [2022-11-20 11:48:26,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4508 states, 3697 states have (on average 1.3654314308899107) internal successors, (5048), 3748 states have internal predecessors, (5048), 465 states have call successors, (465), 270 states have call predecessors, (465), 344 states have return successors, (650), 499 states have call predecessors, (650), 461 states have call successors, (650) [2022-11-20 11:48:26,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4508 states to 4508 states and 6163 transitions. [2022-11-20 11:48:26,527 INFO L78 Accepts]: Start accepts. Automaton has 4508 states and 6163 transitions. Word has length 113 [2022-11-20 11:48:26,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:48:26,528 INFO L495 AbstractCegarLoop]: Abstraction has 4508 states and 6163 transitions. [2022-11-20 11:48:26,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:48:26,528 INFO L276 IsEmpty]: Start isEmpty. Operand 4508 states and 6163 transitions. [2022-11-20 11:48:26,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-20 11:48:26,532 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:48:26,532 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] [2022-11-20 11:48:26,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 11:48:26,533 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:48:26,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:26,534 INFO L85 PathProgramCache]: Analyzing trace with hash -693595554, now seen corresponding path program 1 times [2022-11-20 11:48:26,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:48:26,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998475770] [2022-11-20 11:48:26,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:26,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:48:26,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:26,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:48:26,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:26,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 11:48:26,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:26,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 11:48:26,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:26,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 11:48:26,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:26,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-20 11:48:26,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:26,756 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 11:48:26,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:48:26,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998475770] [2022-11-20 11:48:26,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998475770] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:48:26,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:48:26,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:48:26,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201802553] [2022-11-20 11:48:26,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:48:26,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:48:26,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:48:26,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:48:26,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:48:26,759 INFO L87 Difference]: Start difference. First operand 4508 states and 6163 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:48:30,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:48:30,658 INFO L93 Difference]: Finished difference Result 8943 states and 13205 transitions. [2022-11-20 11:48:30,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:48:30,659 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2022-11-20 11:48:30,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:48:30,693 INFO L225 Difference]: With dead ends: 8943 [2022-11-20 11:48:30,694 INFO L226 Difference]: Without dead ends: 7235 [2022-11-20 11:48:30,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:48:30,702 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 1092 mSDsluCounter, 1433 mSDsCounter, 0 mSdLazyCounter, 2356 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1117 SdHoareTripleChecker+Valid, 1868 SdHoareTripleChecker+Invalid, 2458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 2356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:48:30,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1117 Valid, 1868 Invalid, 2458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 2356 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-20 11:48:30,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7235 states. [2022-11-20 11:48:31,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7235 to 6198. [2022-11-20 11:48:31,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6198 states, 5211 states have (on average 1.4185377086931492) internal successors, (7392), 5270 states have internal predecessors, (7392), 585 states have call successors, (585), 318 states have call predecessors, (585), 400 states have return successors, (840), 627 states have call predecessors, (840), 581 states have call successors, (840) [2022-11-20 11:48:31,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6198 states to 6198 states and 8817 transitions. [2022-11-20 11:48:31,647 INFO L78 Accepts]: Start accepts. Automaton has 6198 states and 8817 transitions. Word has length 113 [2022-11-20 11:48:31,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:48:31,647 INFO L495 AbstractCegarLoop]: Abstraction has 6198 states and 8817 transitions. [2022-11-20 11:48:31,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:48:31,648 INFO L276 IsEmpty]: Start isEmpty. Operand 6198 states and 8817 transitions. [2022-11-20 11:48:31,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-20 11:48:31,654 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:48:31,654 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] [2022-11-20 11:48:31,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 11:48:31,655 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:48:31,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:31,655 INFO L85 PathProgramCache]: Analyzing trace with hash -722095844, now seen corresponding path program 1 times [2022-11-20 11:48:31,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:48:31,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665278982] [2022-11-20 11:48:31,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:31,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:48:31,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:31,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:48:31,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:31,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 11:48:31,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:31,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 11:48:31,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:31,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 11:48:31,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:31,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-20 11:48:31,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:31,879 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 11:48:31,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:48:31,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665278982] [2022-11-20 11:48:31,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665278982] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:48:31,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:48:31,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:48:31,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556667313] [2022-11-20 11:48:31,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:48:31,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:48:31,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:48:31,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:48:31,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:48:31,883 INFO L87 Difference]: Start difference. First operand 6198 states and 8817 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:48:36,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:48:36,226 INFO L93 Difference]: Finished difference Result 14993 states and 22829 transitions. [2022-11-20 11:48:36,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:48:36,227 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2022-11-20 11:48:36,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:48:36,287 INFO L225 Difference]: With dead ends: 14993 [2022-11-20 11:48:36,288 INFO L226 Difference]: Without dead ends: 11595 [2022-11-20 11:48:36,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:48:36,306 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 1092 mSDsluCounter, 1433 mSDsCounter, 0 mSdLazyCounter, 2347 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1117 SdHoareTripleChecker+Valid, 1868 SdHoareTripleChecker+Invalid, 2449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 2347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:48:36,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1117 Valid, 1868 Invalid, 2449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 2347 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-20 11:48:36,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11595 states. [2022-11-20 11:48:37,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11595 to 9592. [2022-11-20 11:48:37,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9592 states, 8253 states have (on average 1.4661335272022296) internal successors, (12100), 8328 states have internal predecessors, (12100), 825 states have call successors, (825), 414 states have call predecessors, (825), 512 states have return successors, (1274), 883 states have call predecessors, (1274), 821 states have call successors, (1274) [2022-11-20 11:48:37,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9592 states to 9592 states and 14199 transitions. [2022-11-20 11:48:37,886 INFO L78 Accepts]: Start accepts. Automaton has 9592 states and 14199 transitions. Word has length 113 [2022-11-20 11:48:37,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:48:37,887 INFO L495 AbstractCegarLoop]: Abstraction has 9592 states and 14199 transitions. [2022-11-20 11:48:37,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:48:37,888 INFO L276 IsEmpty]: Start isEmpty. Operand 9592 states and 14199 transitions. [2022-11-20 11:48:37,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-20 11:48:37,896 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:48:37,896 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] [2022-11-20 11:48:37,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 11:48:37,896 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:48:37,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:37,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1632289438, now seen corresponding path program 1 times [2022-11-20 11:48:37,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:48:37,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154669931] [2022-11-20 11:48:37,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:37,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:48:37,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:37,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:48:37,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:38,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 11:48:38,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:38,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 11:48:38,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:38,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 11:48:38,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:38,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-20 11:48:38,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:38,097 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 11:48:38,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:48:38,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154669931] [2022-11-20 11:48:38,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154669931] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:48:38,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:48:38,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:48:38,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100517620] [2022-11-20 11:48:38,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:48:38,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:48:38,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:48:38,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:48:38,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:48:38,100 INFO L87 Difference]: Start difference. First operand 9592 states and 14199 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:48:41,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:48:41,223 INFO L93 Difference]: Finished difference Result 18498 states and 28638 transitions. [2022-11-20 11:48:41,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:48:41,224 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2022-11-20 11:48:41,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:48:41,280 INFO L225 Difference]: With dead ends: 18498 [2022-11-20 11:48:41,281 INFO L226 Difference]: Without dead ends: 11704 [2022-11-20 11:48:41,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:48:41,312 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 891 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 1199 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 1297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:48:41,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [917 Valid, 1091 Invalid, 1297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1199 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-20 11:48:41,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11704 states. [2022-11-20 11:48:43,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11704 to 9592. [2022-11-20 11:48:43,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9592 states, 8253 states have (on average 1.4621349812189506) internal successors, (12067), 8328 states have internal predecessors, (12067), 825 states have call successors, (825), 414 states have call predecessors, (825), 512 states have return successors, (1274), 883 states have call predecessors, (1274), 821 states have call successors, (1274) [2022-11-20 11:48:43,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9592 states to 9592 states and 14166 transitions. [2022-11-20 11:48:43,202 INFO L78 Accepts]: Start accepts. Automaton has 9592 states and 14166 transitions. Word has length 113 [2022-11-20 11:48:43,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:48:43,202 INFO L495 AbstractCegarLoop]: Abstraction has 9592 states and 14166 transitions. [2022-11-20 11:48:43,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:48:43,203 INFO L276 IsEmpty]: Start isEmpty. Operand 9592 states and 14166 transitions. [2022-11-20 11:48:43,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-20 11:48:43,212 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:48:43,212 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] [2022-11-20 11:48:43,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 11:48:43,213 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:48:43,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:43,213 INFO L85 PathProgramCache]: Analyzing trace with hash -785614628, now seen corresponding path program 1 times [2022-11-20 11:48:43,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:48:43,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477062926] [2022-11-20 11:48:43,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:43,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:48:43,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:43,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:48:43,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:43,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 11:48:43,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:43,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 11:48:43,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:43,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 11:48:43,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:43,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-20 11:48:43,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:43,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:48:43,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:48:43,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477062926] [2022-11-20 11:48:43,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477062926] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:48:43,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:48:43,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:48:43,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308015275] [2022-11-20 11:48:43,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:48:43,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:48:43,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:48:43,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:48:43,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:48:43,388 INFO L87 Difference]: Start difference. First operand 9592 states and 14166 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:48:46,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:48:46,611 INFO L93 Difference]: Finished difference Result 18466 states and 28477 transitions. [2022-11-20 11:48:46,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:48:46,612 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2022-11-20 11:48:46,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:48:46,660 INFO L225 Difference]: With dead ends: 18466 [2022-11-20 11:48:46,660 INFO L226 Difference]: Without dead ends: 11672 [2022-11-20 11:48:46,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:48:46,681 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 892 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 1180 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 1089 SdHoareTripleChecker+Invalid, 1280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:48:46,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 1089 Invalid, 1280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1180 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-20 11:48:46,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11672 states. [2022-11-20 11:48:48,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11672 to 9592. [2022-11-20 11:48:48,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9592 states, 8253 states have (on average 1.4581364352356718) internal successors, (12034), 8328 states have internal predecessors, (12034), 825 states have call successors, (825), 414 states have call predecessors, (825), 512 states have return successors, (1274), 883 states have call predecessors, (1274), 821 states have call successors, (1274) [2022-11-20 11:48:48,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9592 states to 9592 states and 14133 transitions. [2022-11-20 11:48:48,374 INFO L78 Accepts]: Start accepts. Automaton has 9592 states and 14133 transitions. Word has length 113 [2022-11-20 11:48:48,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:48:48,375 INFO L495 AbstractCegarLoop]: Abstraction has 9592 states and 14133 transitions. [2022-11-20 11:48:48,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:48:48,375 INFO L276 IsEmpty]: Start isEmpty. Operand 9592 states and 14133 transitions. [2022-11-20 11:48:48,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-20 11:48:48,386 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:48:48,386 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] [2022-11-20 11:48:48,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 11:48:48,387 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:48:48,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:48,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1556348194, now seen corresponding path program 1 times [2022-11-20 11:48:48,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:48:48,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099405145] [2022-11-20 11:48:48,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:48,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:48:48,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:48,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:48:48,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:48,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 11:48:48,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:48,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 11:48:48,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:48,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 11:48:48,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:48,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-20 11:48:48,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:48,625 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 11:48:48,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:48:48,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099405145] [2022-11-20 11:48:48,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099405145] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:48:48,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:48:48,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:48:48,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382894086] [2022-11-20 11:48:48,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:48:48,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:48:48,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:48:48,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:48:48,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:48:48,629 INFO L87 Difference]: Start difference. First operand 9592 states and 14133 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:48:55,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:48:55,343 INFO L93 Difference]: Finished difference Result 29170 states and 45083 transitions. [2022-11-20 11:48:55,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 11:48:55,345 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2022-11-20 11:48:55,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:48:55,431 INFO L225 Difference]: With dead ends: 29170 [2022-11-20 11:48:55,431 INFO L226 Difference]: Without dead ends: 22378 [2022-11-20 11:48:55,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-20 11:48:55,452 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 1159 mSDsluCounter, 1404 mSDsCounter, 0 mSdLazyCounter, 2484 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1183 SdHoareTripleChecker+Valid, 1828 SdHoareTripleChecker+Invalid, 2588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 2484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:48:55,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1183 Valid, 1828 Invalid, 2588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 2484 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-20 11:48:55,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22378 states. [2022-11-20 11:48:57,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22378 to 16408. [2022-11-20 11:48:57,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16408 states, 14397 states have (on average 1.4928110022921441) internal successors, (21492), 14504 states have internal predecessors, (21492), 1273 states have call successors, (1273), 606 states have call predecessors, (1273), 736 states have return successors, (2272), 1363 states have call predecessors, (2272), 1269 states have call successors, (2272) [2022-11-20 11:48:58,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16408 states to 16408 states and 25037 transitions. [2022-11-20 11:48:58,049 INFO L78 Accepts]: Start accepts. Automaton has 16408 states and 25037 transitions. Word has length 113 [2022-11-20 11:48:58,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:48:58,050 INFO L495 AbstractCegarLoop]: Abstraction has 16408 states and 25037 transitions. [2022-11-20 11:48:58,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:48:58,050 INFO L276 IsEmpty]: Start isEmpty. Operand 16408 states and 25037 transitions. [2022-11-20 11:48:58,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-20 11:48:58,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:48:58,069 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] [2022-11-20 11:48:58,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 11:48:58,070 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:48:58,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:58,071 INFO L85 PathProgramCache]: Analyzing trace with hash -2142624416, now seen corresponding path program 1 times [2022-11-20 11:48:58,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:48:58,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833368762] [2022-11-20 11:48:58,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:58,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:48:58,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:58,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:48:58,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:58,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 11:48:58,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:58,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 11:48:58,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:58,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 11:48:58,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:58,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-20 11:48:58,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:58,296 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 11:48:58,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:48:58,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833368762] [2022-11-20 11:48:58,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833368762] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:48:58,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:48:58,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:48:58,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867612236] [2022-11-20 11:48:58,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:48:58,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:48:58,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:48:58,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:48:58,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:48:58,302 INFO L87 Difference]: Start difference. First operand 16408 states and 25037 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:49:02,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:49:02,711 INFO L93 Difference]: Finished difference Result 33826 states and 53362 transitions. [2022-11-20 11:49:02,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:49:02,712 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2022-11-20 11:49:02,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:49:02,794 INFO L225 Difference]: With dead ends: 33826 [2022-11-20 11:49:02,794 INFO L226 Difference]: Without dead ends: 20216 [2022-11-20 11:49:02,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:49:02,827 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 890 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 1089 SdHoareTripleChecker+Invalid, 1246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:49:02,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [916 Valid, 1089 Invalid, 1246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1146 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-20 11:49:02,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20216 states. [2022-11-20 11:49:05,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20216 to 16408. [2022-11-20 11:49:05,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16408 states, 14397 states have (on average 1.4882961728137807) internal successors, (21427), 14504 states have internal predecessors, (21427), 1273 states have call successors, (1273), 606 states have call predecessors, (1273), 736 states have return successors, (2272), 1363 states have call predecessors, (2272), 1269 states have call successors, (2272) [2022-11-20 11:49:05,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16408 states to 16408 states and 24972 transitions. [2022-11-20 11:49:05,096 INFO L78 Accepts]: Start accepts. Automaton has 16408 states and 24972 transitions. Word has length 113 [2022-11-20 11:49:05,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:49:05,096 INFO L495 AbstractCegarLoop]: Abstraction has 16408 states and 24972 transitions. [2022-11-20 11:49:05,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:49:05,096 INFO L276 IsEmpty]: Start isEmpty. Operand 16408 states and 24972 transitions. [2022-11-20 11:49:05,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-20 11:49:05,111 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:49:05,111 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] [2022-11-20 11:49:05,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 11:49:05,112 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:49:05,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:49:05,113 INFO L85 PathProgramCache]: Analyzing trace with hash 193768094, now seen corresponding path program 1 times [2022-11-20 11:49:05,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:49:05,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755285751] [2022-11-20 11:49:05,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:49:05,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:49:05,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:05,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:49:05,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:05,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 11:49:05,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:05,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 11:49:05,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:05,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 11:49:05,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:05,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-20 11:49:05,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:05,307 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 11:49:05,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:49:05,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755285751] [2022-11-20 11:49:05,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755285751] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:49:05,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:49:05,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:49:05,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283930646] [2022-11-20 11:49:05,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:49:05,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:49:05,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:49:05,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:49:05,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:49:05,311 INFO L87 Difference]: Start difference. First operand 16408 states and 24972 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:49:15,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:49:15,049 INFO L93 Difference]: Finished difference Result 53394 states and 83975 transitions. [2022-11-20 11:49:15,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 11:49:15,050 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2022-11-20 11:49:15,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:49:15,233 INFO L225 Difference]: With dead ends: 53394 [2022-11-20 11:49:15,233 INFO L226 Difference]: Without dead ends: 39786 [2022-11-20 11:49:15,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-20 11:49:15,279 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 1198 mSDsluCounter, 1425 mSDsCounter, 0 mSdLazyCounter, 2185 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1230 SdHoareTripleChecker+Valid, 1858 SdHoareTripleChecker+Invalid, 2292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 2185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:49:15,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1230 Valid, 1858 Invalid, 2292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 2185 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-20 11:49:15,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39786 states. [2022-11-20 11:49:19,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39786 to 30072. [2022-11-20 11:49:19,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30072 states, 26749 states have (on average 1.5094022206437623) internal successors, (40375), 26920 states have internal predecessors, (40375), 2137 states have call successors, (2137), 990 states have call predecessors, (2137), 1184 states have return successors, (4722), 2291 states have call predecessors, (4722), 2133 states have call successors, (4722) [2022-11-20 11:49:20,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30072 states to 30072 states and 47234 transitions. [2022-11-20 11:49:20,328 INFO L78 Accepts]: Start accepts. Automaton has 30072 states and 47234 transitions. Word has length 113 [2022-11-20 11:49:20,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:49:20,328 INFO L495 AbstractCegarLoop]: Abstraction has 30072 states and 47234 transitions. [2022-11-20 11:49:20,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:49:20,329 INFO L276 IsEmpty]: Start isEmpty. Operand 30072 states and 47234 transitions. [2022-11-20 11:49:20,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-20 11:49:20,351 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:49:20,351 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] [2022-11-20 11:49:20,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 11:49:20,352 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:49:20,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:49:20,353 INFO L85 PathProgramCache]: Analyzing trace with hash 2070250912, now seen corresponding path program 1 times [2022-11-20 11:49:20,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:49:20,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853958091] [2022-11-20 11:49:20,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:49:20,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:49:20,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:20,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:49:20,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:20,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 11:49:20,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:20,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 11:49:20,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:20,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 11:49:20,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:20,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-20 11:49:20,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:20,548 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 11:49:20,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:49:20,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853958091] [2022-11-20 11:49:20,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853958091] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:49:20,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:49:20,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:49:20,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984007129] [2022-11-20 11:49:20,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:49:20,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:49:20,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:49:20,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:49:20,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:49:20,552 INFO L87 Difference]: Start difference. First operand 30072 states and 47234 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)