./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.09.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43510f59-5c5a-4b4e-b716-b321063567a6/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43510f59-5c5a-4b4e-b716-b321063567a6/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43510f59-5c5a-4b4e-b716-b321063567a6/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43510f59-5c5a-4b4e-b716-b321063567a6/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.09.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43510f59-5c5a-4b4e-b716-b321063567a6/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43510f59-5c5a-4b4e-b716-b321063567a6/bin/uautomizer-vX5HgA9Q3a --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 93c2f95927688290d9634a76e5cb5c078ca9f28d9ebb5a85520405b4d17220b1 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 13:56:24,534 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 13:56:24,537 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 13:56:24,573 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 13:56:24,574 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 13:56:24,575 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 13:56:24,576 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 13:56:24,583 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 13:56:24,585 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 13:56:24,593 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 13:56:24,594 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 13:56:24,596 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 13:56:24,597 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 13:56:24,602 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 13:56:24,603 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 13:56:24,604 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 13:56:24,605 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 13:56:24,605 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 13:56:24,607 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 13:56:24,608 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 13:56:24,609 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 13:56:24,614 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 13:56:24,617 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 13:56:24,617 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 13:56:24,627 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 13:56:24,628 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 13:56:24,628 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 13:56:24,630 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 13:56:24,630 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 13:56:24,631 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 13:56:24,631 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 13:56:24,632 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 13:56:24,634 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 13:56:24,635 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 13:56:24,636 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 13:56:24,636 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 13:56:24,637 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 13:56:24,637 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 13:56:24,637 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 13:56:24,638 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 13:56:24,638 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 13:56:24,639 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43510f59-5c5a-4b4e-b716-b321063567a6/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 13:56:24,689 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 13:56:24,689 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 13:56:24,690 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 13:56:24,690 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 13:56:24,691 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 13:56:24,691 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 13:56:24,692 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 13:56:24,692 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 13:56:24,692 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 13:56:24,693 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 13:56:24,693 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 13:56:24,693 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 13:56:24,693 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 13:56:24,694 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 13:56:24,694 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 13:56:24,694 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 13:56:24,694 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 13:56:24,695 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 13:56:24,695 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 13:56:24,695 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 13:56:24,695 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 13:56:24,696 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 13:56:24,696 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 13:56:24,696 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 13:56:24,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:56:24,697 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 13:56:24,697 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 13:56:24,697 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 13:56:24,697 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 13:56:24,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 13:56:24,698 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 13:56:24,698 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 13:56:24,698 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 13:56:24,699 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_43510f59-5c5a-4b4e-b716-b321063567a6/bin/uautomizer-vX5HgA9Q3a/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43510f59-5c5a-4b4e-b716-b321063567a6/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93c2f95927688290d9634a76e5cb5c078ca9f28d9ebb5a85520405b4d17220b1 [2022-11-21 13:56:24,985 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 13:56:25,017 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 13:56:25,020 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 13:56:25,021 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 13:56:25,022 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 13:56:25,023 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43510f59-5c5a-4b4e-b716-b321063567a6/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.09.cil-1.c [2022-11-21 13:56:27,972 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 13:56:28,245 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 13:56:28,246 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43510f59-5c5a-4b4e-b716-b321063567a6/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.09.cil-1.c [2022-11-21 13:56:28,258 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43510f59-5c5a-4b4e-b716-b321063567a6/bin/uautomizer-vX5HgA9Q3a/data/91b897c37/4777b66b93ca49fb82f3691bd19ff45d/FLAG521ae9dd6 [2022-11-21 13:56:28,568 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43510f59-5c5a-4b4e-b716-b321063567a6/bin/uautomizer-vX5HgA9Q3a/data/91b897c37/4777b66b93ca49fb82f3691bd19ff45d [2022-11-21 13:56:28,571 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 13:56:28,572 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 13:56:28,573 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 13:56:28,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 13:56:28,577 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 13:56:28,577 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:56:28" (1/1) ... [2022-11-21 13:56:28,578 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d93ab1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:28, skipping insertion in model container [2022-11-21 13:56:28,579 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:56:28" (1/1) ... [2022-11-21 13:56:28,586 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 13:56:28,640 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 13:56:28,808 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_43510f59-5c5a-4b4e-b716-b321063567a6/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.09.cil-1.c[911,924] [2022-11-21 13:56:28,863 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_43510f59-5c5a-4b4e-b716-b321063567a6/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.09.cil-1.c[8416,8429] [2022-11-21 13:56:28,942 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:56:28,962 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 13:56:28,982 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_43510f59-5c5a-4b4e-b716-b321063567a6/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.09.cil-1.c[911,924] [2022-11-21 13:56:29,026 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_43510f59-5c5a-4b4e-b716-b321063567a6/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.09.cil-1.c[8416,8429] [2022-11-21 13:56:29,086 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:56:29,114 INFO L208 MainTranslator]: Completed translation [2022-11-21 13:56:29,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:29 WrapperNode [2022-11-21 13:56:29,115 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 13:56:29,115 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 13:56:29,115 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 13:56:29,116 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 13:56:29,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:29" (1/1) ... [2022-11-21 13:56:29,147 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:29" (1/1) ... [2022-11-21 13:56:29,205 INFO L138 Inliner]: procedures = 73, calls = 88, calls flagged for inlining = 42, calls inlined = 42, statements flattened = 904 [2022-11-21 13:56:29,206 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 13:56:29,210 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 13:56:29,210 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 13:56:29,210 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 13:56:29,227 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:29" (1/1) ... [2022-11-21 13:56:29,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:29" (1/1) ... [2022-11-21 13:56:29,236 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:29" (1/1) ... [2022-11-21 13:56:29,244 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:29" (1/1) ... [2022-11-21 13:56:29,258 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:29" (1/1) ... [2022-11-21 13:56:29,283 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:29" (1/1) ... [2022-11-21 13:56:29,299 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:29" (1/1) ... [2022-11-21 13:56:29,302 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:29" (1/1) ... [2022-11-21 13:56:29,320 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 13:56:29,321 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 13:56:29,322 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 13:56:29,322 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 13:56:29,324 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:29" (1/1) ... [2022-11-21 13:56:29,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:56:29,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43510f59-5c5a-4b4e-b716-b321063567a6/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:56:29,355 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43510f59-5c5a-4b4e-b716-b321063567a6/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 13:56:29,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_43510f59-5c5a-4b4e-b716-b321063567a6/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 13:56:29,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 13:56:29,398 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-21 13:56:29,398 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-21 13:56:29,398 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-11-21 13:56:29,399 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-11-21 13:56:29,399 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-11-21 13:56:29,399 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-11-21 13:56:29,400 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-11-21 13:56:29,400 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-11-21 13:56:29,400 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-11-21 13:56:29,400 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-11-21 13:56:29,400 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-11-21 13:56:29,401 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-11-21 13:56:29,401 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-11-21 13:56:29,401 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-11-21 13:56:29,401 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-11-21 13:56:29,401 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-11-21 13:56:29,402 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-11-21 13:56:29,402 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-11-21 13:56:29,402 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-11-21 13:56:29,402 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-11-21 13:56:29,402 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-11-21 13:56:29,403 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-11-21 13:56:29,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 13:56:29,403 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-11-21 13:56:29,403 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-11-21 13:56:29,404 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-11-21 13:56:29,404 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-11-21 13:56:29,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 13:56:29,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 13:56:29,405 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-11-21 13:56:29,405 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-11-21 13:56:29,537 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 13:56:29,540 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 13:56:30,519 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2022-11-21 13:56:30,519 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; [2022-11-21 13:56:30,601 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 13:56:30,625 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 13:56:30,626 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-21 13:56:30,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:56:30 BoogieIcfgContainer [2022-11-21 13:56:30,631 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 13:56:30,636 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 13:56:30,636 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 13:56:30,639 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 13:56:30,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:56:28" (1/3) ... [2022-11-21 13:56:30,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@489554e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:56:30, skipping insertion in model container [2022-11-21 13:56:30,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:56:29" (2/3) ... [2022-11-21 13:56:30,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@489554e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:56:30, skipping insertion in model container [2022-11-21 13:56:30,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:56:30" (3/3) ... [2022-11-21 13:56:30,645 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.09.cil-1.c [2022-11-21 13:56:30,662 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 13:56:30,662 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-21 13:56:30,733 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 13:56:30,741 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;@29278809, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 13:56:30,742 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-21 13:56:30,749 INFO L276 IsEmpty]: Start isEmpty. Operand has 424 states, 368 states have (on average 1.625) internal successors, (598), 374 states have internal predecessors, (598), 39 states have call successors, (39), 14 states have call predecessors, (39), 14 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2022-11-21 13:56:30,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-21 13:56:30,760 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:30,761 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] [2022-11-21 13:56:30,762 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:56:30,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:30,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1177923463, now seen corresponding path program 1 times [2022-11-21 13:56:30,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:56:30,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733549087] [2022-11-21 13:56:30,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:30,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:56:30,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:31,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:56:31,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:31,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:56:31,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:31,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 13:56:31,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:31,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:56:31,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:31,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 13:56:31,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:31,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 13:56:31,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:31,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-21 13:56:31,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:31,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:31,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:56:31,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733549087] [2022-11-21 13:56:31,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733549087] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:31,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:56:31,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 13:56:31,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270530325] [2022-11-21 13:56:31,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:31,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 13:56:31,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:56:31,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 13:56:31,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 13:56:31,298 INFO L87 Difference]: Start difference. First operand has 424 states, 368 states have (on average 1.625) internal successors, (598), 374 states have internal predecessors, (598), 39 states have call successors, (39), 14 states have call predecessors, (39), 14 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 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) [2022-11-21 13:56:32,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:32,421 INFO L93 Difference]: Finished difference Result 842 states and 1340 transitions. [2022-11-21 13:56:32,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 13:56:32,424 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 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 65 [2022-11-21 13:56:32,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:32,450 INFO L225 Difference]: With dead ends: 842 [2022-11-21 13:56:32,450 INFO L226 Difference]: Without dead ends: 432 [2022-11-21 13:56:32,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-21 13:56:32,467 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 675 mSDsluCounter, 1106 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-21 13:56:32,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [687 Valid, 1476 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-21 13:56:32,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2022-11-21 13:56:32,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 414. [2022-11-21 13:56:32,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 360 states have (on average 1.5361111111111112) internal successors, (553), 364 states have internal predecessors, (553), 39 states have call successors, (39), 14 states have call predecessors, (39), 13 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-11-21 13:56:32,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 629 transitions. [2022-11-21 13:56:32,586 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 629 transitions. Word has length 65 [2022-11-21 13:56:32,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:32,586 INFO L495 AbstractCegarLoop]: Abstraction has 414 states and 629 transitions. [2022-11-21 13:56:32,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 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) [2022-11-21 13:56:32,587 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 629 transitions. [2022-11-21 13:56:32,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-21 13:56:32,590 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:32,590 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] [2022-11-21 13:56:32,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 13:56:32,591 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:56:32,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:32,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1137248713, now seen corresponding path program 1 times [2022-11-21 13:56:32,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:56:32,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607121418] [2022-11-21 13:56:32,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:32,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:56:32,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:32,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:56:32,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:32,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:56:32,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:32,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 13:56:32,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:32,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:56:32,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:32,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 13:56:32,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:32,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 13:56:32,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:32,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-21 13:56:32,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:32,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:32,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:56:32,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607121418] [2022-11-21 13:56:32,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607121418] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:32,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:56:32,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 13:56:32,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280855422] [2022-11-21 13:56:32,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:32,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 13:56:32,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:56:32,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 13:56:32,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-21 13:56:32,790 INFO L87 Difference]: Start difference. First operand 414 states and 629 transitions. 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) [2022-11-21 13:56:34,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:34,050 INFO L93 Difference]: Finished difference Result 669 states and 998 transitions. [2022-11-21 13:56:34,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 13:56:34,050 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 [2022-11-21 13:56:34,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:34,054 INFO L225 Difference]: With dead ends: 669 [2022-11-21 13:56:34,054 INFO L226 Difference]: Without dead ends: 565 [2022-11-21 13:56:34,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-11-21 13:56:34,057 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 1407 mSDsluCounter, 1221 mSDsCounter, 0 mSdLazyCounter, 1212 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1414 SdHoareTripleChecker+Valid, 1613 SdHoareTripleChecker+Invalid, 1443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 1212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:56:34,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1414 Valid, 1613 Invalid, 1443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 1212 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-21 13:56:34,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2022-11-21 13:56:34,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 526. [2022-11-21 13:56:34,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 450 states have (on average 1.508888888888889) internal successors, (679), 456 states have internal predecessors, (679), 52 states have call successors, (52), 21 states have call predecessors, (52), 22 states have return successors, (55), 51 states have call predecessors, (55), 50 states have call successors, (55) [2022-11-21 13:56:34,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 786 transitions. [2022-11-21 13:56:34,110 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 786 transitions. Word has length 65 [2022-11-21 13:56:34,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:34,110 INFO L495 AbstractCegarLoop]: Abstraction has 526 states and 786 transitions. [2022-11-21 13:56:34,110 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) [2022-11-21 13:56:34,111 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 786 transitions. [2022-11-21 13:56:34,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-21 13:56:34,113 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:34,113 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] [2022-11-21 13:56:34,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 13:56:34,114 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:56:34,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:34,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1619378553, now seen corresponding path program 1 times [2022-11-21 13:56:34,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:56:34,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472707381] [2022-11-21 13:56:34,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:34,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:56:34,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:34,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:56:34,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:34,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:56:34,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:34,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 13:56:34,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:34,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:56:34,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:34,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 13:56:34,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:34,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 13:56:34,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:34,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-21 13:56:34,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:34,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:34,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:56:34,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472707381] [2022-11-21 13:56:34,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472707381] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:34,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:56:34,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 13:56:34,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867701968] [2022-11-21 13:56:34,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:34,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 13:56:34,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:56:34,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 13:56:34,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-21 13:56:34,310 INFO L87 Difference]: Start difference. First operand 526 states and 786 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) [2022-11-21 13:56:35,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:35,892 INFO L93 Difference]: Finished difference Result 923 states and 1351 transitions. [2022-11-21 13:56:35,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-21 13:56:35,894 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 [2022-11-21 13:56:35,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:35,898 INFO L225 Difference]: With dead ends: 923 [2022-11-21 13:56:35,898 INFO L226 Difference]: Without dead ends: 714 [2022-11-21 13:56:35,899 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 [2022-11-21 13:56:35,900 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 1222 mSDsluCounter, 1776 mSDsCounter, 0 mSdLazyCounter, 1672 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1251 SdHoareTripleChecker+Valid, 2197 SdHoareTripleChecker+Invalid, 1797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-21 13:56:35,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1251 Valid, 2197 Invalid, 1797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1672 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-21 13:56:35,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2022-11-21 13:56:35,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 638. [2022-11-21 13:56:35,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 540 states have (on average 1.488888888888889) internal successors, (804), 548 states have internal predecessors, (804), 65 states have call successors, (65), 28 states have call predecessors, (65), 31 states have return successors, (76), 65 states have call predecessors, (76), 63 states have call successors, (76) [2022-11-21 13:56:35,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 945 transitions. [2022-11-21 13:56:35,959 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 945 transitions. Word has length 65 [2022-11-21 13:56:35,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:35,959 INFO L495 AbstractCegarLoop]: Abstraction has 638 states and 945 transitions. [2022-11-21 13:56:35,959 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) [2022-11-21 13:56:35,960 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 945 transitions. [2022-11-21 13:56:35,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-21 13:56:35,962 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:35,962 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] [2022-11-21 13:56:35,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 13:56:35,962 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:56:35,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:35,963 INFO L85 PathProgramCache]: Analyzing trace with hash 647002633, now seen corresponding path program 1 times [2022-11-21 13:56:35,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:56:35,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911236591] [2022-11-21 13:56:35,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:35,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:56:35,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:36,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:56:36,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:36,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:56:36,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:36,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 13:56:36,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:36,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:56:36,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:36,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 13:56:36,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:36,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 13:56:36,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:36,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-21 13:56:36,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:36,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:36,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:56:36,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911236591] [2022-11-21 13:56:36,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911236591] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:36,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:56:36,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 13:56:36,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116946540] [2022-11-21 13:56:36,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:36,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 13:56:36,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:56:36,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 13:56:36,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-21 13:56:36,126 INFO L87 Difference]: Start difference. First operand 638 states and 945 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) [2022-11-21 13:56:38,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:38,645 INFO L93 Difference]: Finished difference Result 2184 states and 3142 transitions. [2022-11-21 13:56:38,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-21 13:56:38,646 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 [2022-11-21 13:56:38,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:38,663 INFO L225 Difference]: With dead ends: 2184 [2022-11-21 13:56:38,664 INFO L226 Difference]: Without dead ends: 1851 [2022-11-21 13:56:38,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-11-21 13:56:38,674 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 3365 mSDsluCounter, 2070 mSDsCounter, 0 mSdLazyCounter, 2156 mSolverCounterSat, 592 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3383 SdHoareTripleChecker+Valid, 2526 SdHoareTripleChecker+Invalid, 2748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 592 IncrementalHoareTripleChecker+Valid, 2156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-21 13:56:38,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3383 Valid, 2526 Invalid, 2748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [592 Valid, 2156 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-21 13:56:38,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1851 states. [2022-11-21 13:56:38,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1851 to 1691. [2022-11-21 13:56:38,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1691 states, 1388 states have (on average 1.404899135446686) internal successors, (1950), 1411 states have internal predecessors, (1950), 175 states have call successors, (175), 111 states have call predecessors, (175), 126 states have return successors, (209), 171 states have call predecessors, (209), 173 states have call successors, (209) [2022-11-21 13:56:38,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1691 states to 1691 states and 2334 transitions. [2022-11-21 13:56:38,858 INFO L78 Accepts]: Start accepts. Automaton has 1691 states and 2334 transitions. Word has length 65 [2022-11-21 13:56:38,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:38,858 INFO L495 AbstractCegarLoop]: Abstraction has 1691 states and 2334 transitions. [2022-11-21 13:56:38,859 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) [2022-11-21 13:56:38,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1691 states and 2334 transitions. [2022-11-21 13:56:38,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-21 13:56:38,860 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:38,860 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:56:38,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 13:56:38,861 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:56:38,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:38,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1861088182, now seen corresponding path program 1 times [2022-11-21 13:56:38,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:56:38,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514385286] [2022-11-21 13:56:38,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:38,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:56:38,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:38,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:56:38,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:38,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:56:38,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:38,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 13:56:38,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:38,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:56:38,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:39,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-21 13:56:39,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:39,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 13:56:39,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:39,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-21 13:56:39,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:39,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:39,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:56:39,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514385286] [2022-11-21 13:56:39,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514385286] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:39,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:56:39,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 13:56:39,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322423445] [2022-11-21 13:56:39,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:39,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 13:56:39,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:56:39,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 13:56:39,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-21 13:56:39,035 INFO L87 Difference]: Start difference. First operand 1691 states and 2334 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 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) [2022-11-21 13:56:40,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:40,554 INFO L93 Difference]: Finished difference Result 3219 states and 4413 transitions. [2022-11-21 13:56:40,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 13:56:40,555 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 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 66 [2022-11-21 13:56:40,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:40,564 INFO L225 Difference]: With dead ends: 3219 [2022-11-21 13:56:40,564 INFO L226 Difference]: Without dead ends: 1839 [2022-11-21 13:56:40,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-21 13:56:40,571 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 553 mSDsluCounter, 2127 mSDsCounter, 0 mSdLazyCounter, 1727 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 2488 SdHoareTripleChecker+Invalid, 1815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-21 13:56:40,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [554 Valid, 2488 Invalid, 1815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1727 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-21 13:56:40,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1839 states. [2022-11-21 13:56:40,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1839 to 1731. [2022-11-21 13:56:40,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1731 states, 1420 states have (on average 1.3915492957746478) internal successors, (1976), 1443 states have internal predecessors, (1976), 175 states have call successors, (175), 111 states have call predecessors, (175), 134 states have return successors, (217), 179 states have call predecessors, (217), 173 states have call successors, (217) [2022-11-21 13:56:40,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2368 transitions. [2022-11-21 13:56:40,745 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2368 transitions. Word has length 66 [2022-11-21 13:56:40,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:40,746 INFO L495 AbstractCegarLoop]: Abstraction has 1731 states and 2368 transitions. [2022-11-21 13:56:40,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 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) [2022-11-21 13:56:40,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2368 transitions. [2022-11-21 13:56:40,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-21 13:56:40,749 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:40,749 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:56:40,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 13:56:40,749 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:56:40,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:40,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1404519816, now seen corresponding path program 1 times [2022-11-21 13:56:40,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:56:40,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689227979] [2022-11-21 13:56:40,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:40,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:56:40,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:40,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:56:40,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:40,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:56:40,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:40,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 13:56:40,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:40,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:56:40,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:40,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-21 13:56:40,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:40,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 13:56:40,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:40,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-21 13:56:40,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:40,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:40,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:56:40,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689227979] [2022-11-21 13:56:40,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689227979] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:40,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:56:40,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 13:56:40,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125286820] [2022-11-21 13:56:40,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:40,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 13:56:40,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:56:40,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 13:56:40,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-21 13:56:40,961 INFO L87 Difference]: Start difference. First operand 1731 states and 2368 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) [2022-11-21 13:56:43,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:43,538 INFO L93 Difference]: Finished difference Result 5303 states and 7242 transitions. [2022-11-21 13:56:43,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-21 13:56:43,539 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 [2022-11-21 13:56:43,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:43,549 INFO L225 Difference]: With dead ends: 5303 [2022-11-21 13:56:43,549 INFO L226 Difference]: Without dead ends: 2122 [2022-11-21 13:56:43,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-11-21 13:56:43,560 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 3479 mSDsluCounter, 2100 mSDsCounter, 0 mSdLazyCounter, 2064 mSolverCounterSat, 608 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3497 SdHoareTripleChecker+Valid, 2556 SdHoareTripleChecker+Invalid, 2672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 608 IncrementalHoareTripleChecker+Valid, 2064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-21 13:56:43,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3497 Valid, 2556 Invalid, 2672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [608 Valid, 2064 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-21 13:56:43,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2122 states. [2022-11-21 13:56:43,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2122 to 1942. [2022-11-21 13:56:43,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1942 states, 1559 states have (on average 1.3483001924310456) internal successors, (2102), 1584 states have internal predecessors, (2102), 215 states have call successors, (215), 139 states have call predecessors, (215), 166 states have return successors, (263), 221 states have call predecessors, (263), 213 states have call successors, (263) [2022-11-21 13:56:43,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1942 states to 1942 states and 2580 transitions. [2022-11-21 13:56:43,739 INFO L78 Accepts]: Start accepts. Automaton has 1942 states and 2580 transitions. Word has length 66 [2022-11-21 13:56:43,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:43,739 INFO L495 AbstractCegarLoop]: Abstraction has 1942 states and 2580 transitions. [2022-11-21 13:56:43,739 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) [2022-11-21 13:56:43,740 INFO L276 IsEmpty]: Start isEmpty. Operand 1942 states and 2580 transitions. [2022-11-21 13:56:43,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-21 13:56:43,743 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:43,743 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] [2022-11-21 13:56:43,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 13:56:43,744 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:56:43,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:43,744 INFO L85 PathProgramCache]: Analyzing trace with hash -934912176, now seen corresponding path program 1 times [2022-11-21 13:56:43,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:56:43,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058946563] [2022-11-21 13:56:43,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:43,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:56:43,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:43,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:56:43,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:43,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:56:43,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:43,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 13:56:43,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:43,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:56:43,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:43,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-21 13:56:43,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:43,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-21 13:56:43,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:43,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 13:56:43,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:43,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-21 13:56:43,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:43,944 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-21 13:56:43,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:56:43,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058946563] [2022-11-21 13:56:43,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058946563] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:43,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:56:43,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 13:56:43,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135827] [2022-11-21 13:56:43,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:43,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 13:56:43,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:56:43,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 13:56:43,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-21 13:56:43,947 INFO L87 Difference]: Start difference. First operand 1942 states and 2580 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) [2022-11-21 13:56:45,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:45,372 INFO L93 Difference]: Finished difference Result 3767 states and 4982 transitions. [2022-11-21 13:56:45,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 13:56:45,373 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 [2022-11-21 13:56:45,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:45,383 INFO L225 Difference]: With dead ends: 3767 [2022-11-21 13:56:45,383 INFO L226 Difference]: Without dead ends: 2136 [2022-11-21 13:56:45,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-11-21 13:56:45,388 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 810 mSDsluCounter, 1810 mSDsCounter, 0 mSdLazyCounter, 1639 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 2162 SdHoareTripleChecker+Invalid, 1770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:56:45,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [812 Valid, 2162 Invalid, 1770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1639 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-21 13:56:45,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2136 states. [2022-11-21 13:56:45,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2136 to 2002. [2022-11-21 13:56:45,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2002 states, 1607 states have (on average 1.3341630367143746) internal successors, (2144), 1632 states have internal predecessors, (2144), 215 states have call successors, (215), 139 states have call predecessors, (215), 178 states have return successors, (275), 233 states have call predecessors, (275), 213 states have call successors, (275) [2022-11-21 13:56:45,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2002 states to 2002 states and 2634 transitions. [2022-11-21 13:56:45,594 INFO L78 Accepts]: Start accepts. Automaton has 2002 states and 2634 transitions. Word has length 91 [2022-11-21 13:56:45,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:45,594 INFO L495 AbstractCegarLoop]: Abstraction has 2002 states and 2634 transitions. [2022-11-21 13:56:45,594 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) [2022-11-21 13:56:45,594 INFO L276 IsEmpty]: Start isEmpty. Operand 2002 states and 2634 transitions. [2022-11-21 13:56:45,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-21 13:56:45,596 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:45,596 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:56:45,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 13:56:45,597 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:56:45,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:45,597 INFO L85 PathProgramCache]: Analyzing trace with hash -491011502, now seen corresponding path program 1 times [2022-11-21 13:56:45,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:56:45,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80583892] [2022-11-21 13:56:45,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:45,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:56:45,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:45,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:56:45,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:45,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:56:45,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:45,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 13:56:45,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:45,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:56:45,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:45,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-21 13:56:45,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:45,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-21 13:56:45,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:45,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 13:56:45,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:45,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-21 13:56:45,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:45,780 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-21 13:56:45,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:56:45,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80583892] [2022-11-21 13:56:45,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80583892] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:45,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:56:45,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 13:56:45,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992102797] [2022-11-21 13:56:45,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:45,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 13:56:45,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:56:45,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 13:56:45,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-21 13:56:45,783 INFO L87 Difference]: Start difference. First operand 2002 states and 2634 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) [2022-11-21 13:56:47,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:47,275 INFO L93 Difference]: Finished difference Result 3529 states and 4598 transitions. [2022-11-21 13:56:47,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-21 13:56:47,275 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 [2022-11-21 13:56:47,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:47,286 INFO L225 Difference]: With dead ends: 3529 [2022-11-21 13:56:47,286 INFO L226 Difference]: Without dead ends: 2076 [2022-11-21 13:56:47,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2022-11-21 13:56:47,291 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 1243 mSDsluCounter, 1539 mSDsCounter, 0 mSdLazyCounter, 1475 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1273 SdHoareTripleChecker+Valid, 1894 SdHoareTripleChecker+Invalid, 1622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 1475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-21 13:56:47,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1273 Valid, 1894 Invalid, 1622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 1475 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-21 13:56:47,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2076 states. [2022-11-21 13:56:47,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2076 to 1781. [2022-11-21 13:56:47,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1781 states, 1439 states have (on average 1.3384294649061848) internal successors, (1926), 1459 states have internal predecessors, (1926), 187 states have call successors, (187), 120 states have call predecessors, (187), 153 states have return successors, (235), 203 states have call predecessors, (235), 185 states have call successors, (235) [2022-11-21 13:56:47,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1781 states to 1781 states and 2348 transitions. [2022-11-21 13:56:47,442 INFO L78 Accepts]: Start accepts. Automaton has 1781 states and 2348 transitions. Word has length 91 [2022-11-21 13:56:47,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:47,442 INFO L495 AbstractCegarLoop]: Abstraction has 1781 states and 2348 transitions. [2022-11-21 13:56:47,442 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) [2022-11-21 13:56:47,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states and 2348 transitions. [2022-11-21 13:56:47,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-21 13:56:47,444 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:47,444 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] [2022-11-21 13:56:47,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 13:56:47,444 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:56:47,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:47,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1448150544, now seen corresponding path program 1 times [2022-11-21 13:56:47,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:56:47,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362559560] [2022-11-21 13:56:47,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:47,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:56:47,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:47,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:56:47,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:47,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:56:47,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:47,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 13:56:47,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:47,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:56:47,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:47,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-21 13:56:47,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:47,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-21 13:56:47,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:47,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 13:56:47,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:47,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-21 13:56:47,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:47,576 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-21 13:56:47,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:56:47,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362559560] [2022-11-21 13:56:47,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362559560] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:47,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:56:47,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:56:47,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883120998] [2022-11-21 13:56:47,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:47,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:56:47,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:56:47,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:56:47,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:56:47,579 INFO L87 Difference]: Start difference. First operand 1781 states and 2348 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) [2022-11-21 13:56:48,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:48,634 INFO L93 Difference]: Finished difference Result 4933 states and 6460 transitions. [2022-11-21 13:56:48,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 13:56:48,635 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 [2022-11-21 13:56:48,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:48,651 INFO L225 Difference]: With dead ends: 4933 [2022-11-21 13:56:48,651 INFO L226 Difference]: Without dead ends: 3464 [2022-11-21 13:56:48,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-11-21 13:56:48,657 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 1163 mSDsluCounter, 1192 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1194 SdHoareTripleChecker+Valid, 1536 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-21 13:56:48,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1194 Valid, 1536 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-21 13:56:48,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3464 states. [2022-11-21 13:56:48,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3464 to 3250. [2022-11-21 13:56:48,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3250 states, 2588 states have (on average 1.295981452859351) internal successors, (3354), 2637 states have internal predecessors, (3354), 348 states have call successors, (348), 233 states have call predecessors, (348), 312 states have return successors, (518), 382 states have call predecessors, (518), 346 states have call successors, (518) [2022-11-21 13:56:48,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3250 states to 3250 states and 4220 transitions. [2022-11-21 13:56:48,971 INFO L78 Accepts]: Start accepts. Automaton has 3250 states and 4220 transitions. Word has length 91 [2022-11-21 13:56:48,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:48,972 INFO L495 AbstractCegarLoop]: Abstraction has 3250 states and 4220 transitions. [2022-11-21 13:56:48,973 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) [2022-11-21 13:56:48,973 INFO L276 IsEmpty]: Start isEmpty. Operand 3250 states and 4220 transitions. [2022-11-21 13:56:48,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-21 13:56:48,974 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:48,975 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] [2022-11-21 13:56:48,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 13:56:48,975 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:56:48,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:48,976 INFO L85 PathProgramCache]: Analyzing trace with hash 390312466, now seen corresponding path program 1 times [2022-11-21 13:56:48,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:56:48,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937967599] [2022-11-21 13:56:48,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:48,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:56:48,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:49,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:56:49,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:49,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:56:49,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:49,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 13:56:49,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:49,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:56:49,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:49,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-21 13:56:49,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:49,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-21 13:56:49,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:49,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 13:56:49,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:49,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-21 13:56:49,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:49,067 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-21 13:56:49,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:56:49,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937967599] [2022-11-21 13:56:49,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937967599] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:49,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:56:49,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 13:56:49,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073885960] [2022-11-21 13:56:49,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:49,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 13:56:49,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:56:49,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 13:56:49,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 13:56:49,069 INFO L87 Difference]: Start difference. First operand 3250 states and 4220 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) [2022-11-21 13:56:49,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:49,908 INFO L93 Difference]: Finished difference Result 4834 states and 6204 transitions. [2022-11-21 13:56:49,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 13:56:49,909 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 [2022-11-21 13:56:49,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:49,920 INFO L225 Difference]: With dead ends: 4834 [2022-11-21 13:56:49,920 INFO L226 Difference]: Without dead ends: 1896 [2022-11-21 13:56:49,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-21 13:56:49,927 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 922 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 937 SdHoareTripleChecker+Valid, 1131 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-21 13:56:49,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [937 Valid, 1131 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-21 13:56:49,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1896 states. [2022-11-21 13:56:50,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1896 to 1781. [2022-11-21 13:56:50,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1781 states, 1439 states have (on average 1.3127171646977067) internal successors, (1889), 1459 states have internal predecessors, (1889), 187 states have call successors, (187), 120 states have call predecessors, (187), 153 states have return successors, (235), 203 states have call predecessors, (235), 185 states have call successors, (235) [2022-11-21 13:56:50,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1781 states to 1781 states and 2311 transitions. [2022-11-21 13:56:50,075 INFO L78 Accepts]: Start accepts. Automaton has 1781 states and 2311 transitions. Word has length 91 [2022-11-21 13:56:50,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:50,075 INFO L495 AbstractCegarLoop]: Abstraction has 1781 states and 2311 transitions. [2022-11-21 13:56:50,075 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) [2022-11-21 13:56:50,075 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states and 2311 transitions. [2022-11-21 13:56:50,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-21 13:56:50,080 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:50,081 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] [2022-11-21 13:56:50,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 13:56:50,081 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:56:50,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:50,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1802771828, now seen corresponding path program 1 times [2022-11-21 13:56:50,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:56:50,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349609260] [2022-11-21 13:56:50,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:50,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:56:50,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:50,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:56:50,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:50,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 13:56:50,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:50,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 13:56:50,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:50,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 13:56:50,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:50,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-21 13:56:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:50,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-21 13:56:50,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:50,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 13:56:50,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:50,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-21 13:56:50,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:50,236 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 13:56:50,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:56:50,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349609260] [2022-11-21 13:56:50,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349609260] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:50,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:56:50,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 13:56:50,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101631048] [2022-11-21 13:56:50,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:50,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 13:56:50,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:56:50,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 13:56:50,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-21 13:56:50,239 INFO L87 Difference]: Start difference. First operand 1781 states and 2311 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) [2022-11-21 13:56:52,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:52,174 INFO L93 Difference]: Finished difference Result 4122 states and 5300 transitions. [2022-11-21 13:56:52,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-21 13:56:52,175 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 [2022-11-21 13:56:52,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:52,185 INFO L225 Difference]: With dead ends: 4122 [2022-11-21 13:56:52,186 INFO L226 Difference]: Without dead ends: 2579 [2022-11-21 13:56:52,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2022-11-21 13:56:52,189 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 2174 mSDsluCounter, 1302 mSDsCounter, 0 mSdLazyCounter, 1629 mSolverCounterSat, 425 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2213 SdHoareTripleChecker+Valid, 1678 SdHoareTripleChecker+Invalid, 2054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 1629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-21 13:56:52,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2213 Valid, 1678 Invalid, 2054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [425 Valid, 1629 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-21 13:56:52,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2579 states. [2022-11-21 13:56:52,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2579 to 2402. [2022-11-21 13:56:52,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2402 states, 1906 states have (on average 1.2759706190975866) internal successors, (2432), 1934 states have internal predecessors, (2432), 264 states have call successors, (264), 168 states have call predecessors, (264), 230 states have return successors, (366), 301 states have call predecessors, (366), 262 states have call successors, (366) [2022-11-21 13:56:52,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2402 states to 2402 states and 3062 transitions. [2022-11-21 13:56:52,390 INFO L78 Accepts]: Start accepts. Automaton has 2402 states and 3062 transitions. Word has length 92 [2022-11-21 13:56:52,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:52,392 INFO L495 AbstractCegarLoop]: Abstraction has 2402 states and 3062 transitions. [2022-11-21 13:56:52,392 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) [2022-11-21 13:56:52,392 INFO L276 IsEmpty]: Start isEmpty. Operand 2402 states and 3062 transitions. [2022-11-21 13:56:52,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-21 13:56:52,395 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:52,395 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:56:52,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 13:56:52,396 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:56:52,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:52,396 INFO L85 PathProgramCache]: Analyzing trace with hash -971775259, now seen corresponding path program 1 times [2022-11-21 13:56:52,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:56:52,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704013832] [2022-11-21 13:56:52,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:52,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:56:52,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:52,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:56:52,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:52,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-21 13:56:52,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:52,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-21 13:56:52,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:52,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-21 13:56:52,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:52,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-21 13:56:52,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:52,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:52,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:56:52,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704013832] [2022-11-21 13:56:52,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704013832] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:52,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:56:52,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 13:56:52,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716389156] [2022-11-21 13:56:52,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:52,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 13:56:52,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:56:52,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 13:56:52,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 13:56:52,534 INFO L87 Difference]: Start difference. First operand 2402 states and 3062 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:56:54,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:54,649 INFO L93 Difference]: Finished difference Result 2800 states and 3700 transitions. [2022-11-21 13:56:54,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 13:56:54,650 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-11-21 13:56:54,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:54,661 INFO L225 Difference]: With dead ends: 2800 [2022-11-21 13:56:54,661 INFO L226 Difference]: Without dead ends: 2511 [2022-11-21 13:56:54,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-21 13:56:54,664 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 912 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 933 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 1045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-21 13:56:54,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [933 Valid, 868 Invalid, 1045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-21 13:56:54,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2511 states. [2022-11-21 13:56:55,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2511 to 2402. [2022-11-21 13:56:55,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2402 states, 1906 states have (on average 1.275445960125918) internal successors, (2431), 1934 states have internal predecessors, (2431), 264 states have call successors, (264), 168 states have call predecessors, (264), 230 states have return successors, (366), 301 states have call predecessors, (366), 262 states have call successors, (366) [2022-11-21 13:56:55,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2402 states to 2402 states and 3061 transitions. [2022-11-21 13:56:55,060 INFO L78 Accepts]: Start accepts. Automaton has 2402 states and 3061 transitions. Word has length 145 [2022-11-21 13:56:55,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:55,061 INFO L495 AbstractCegarLoop]: Abstraction has 2402 states and 3061 transitions. [2022-11-21 13:56:55,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:56:55,061 INFO L276 IsEmpty]: Start isEmpty. Operand 2402 states and 3061 transitions. [2022-11-21 13:56:55,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-21 13:56:55,063 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:55,064 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:56:55,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 13:56:55,064 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:56:55,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:55,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1646935385, now seen corresponding path program 1 times [2022-11-21 13:56:55,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:56:55,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707212456] [2022-11-21 13:56:55,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:55,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:56:55,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:55,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:56:55,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:55,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-21 13:56:55,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:55,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-21 13:56:55,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:55,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-21 13:56:55,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:55,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-21 13:56:55,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:55,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:55,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:56:55,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707212456] [2022-11-21 13:56:55,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707212456] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:55,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:56:55,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 13:56:55,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403199964] [2022-11-21 13:56:55,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:55,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 13:56:55,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:56:55,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 13:56:55,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 13:56:55,244 INFO L87 Difference]: Start difference. First operand 2402 states and 3061 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:56:58,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:56:58,603 INFO L93 Difference]: Finished difference Result 3202 states and 4348 transitions. [2022-11-21 13:56:58,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 13:56:58,603 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-11-21 13:56:58,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:56:58,614 INFO L225 Difference]: With dead ends: 3202 [2022-11-21 13:56:58,615 INFO L226 Difference]: Without dead ends: 2917 [2022-11-21 13:56:58,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-21 13:56:58,617 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 1454 mSDsluCounter, 935 mSDsCounter, 0 mSdLazyCounter, 2033 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 2169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 2033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-21 13:56:58,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1291 Invalid, 2169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 2033 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-21 13:56:58,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2917 states. [2022-11-21 13:56:59,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2917 to 2700. [2022-11-21 13:56:59,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2700 states, 2179 states have (on average 1.3143643873336393) internal successors, (2864), 2208 states have internal predecessors, (2864), 282 states have call successors, (282), 174 states have call predecessors, (282), 237 states have return successors, (387), 319 states have call predecessors, (387), 280 states have call successors, (387) [2022-11-21 13:56:59,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2700 states to 2700 states and 3533 transitions. [2022-11-21 13:56:59,071 INFO L78 Accepts]: Start accepts. Automaton has 2700 states and 3533 transitions. Word has length 145 [2022-11-21 13:56:59,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:56:59,071 INFO L495 AbstractCegarLoop]: Abstraction has 2700 states and 3533 transitions. [2022-11-21 13:56:59,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:56:59,072 INFO L276 IsEmpty]: Start isEmpty. Operand 2700 states and 3533 transitions. [2022-11-21 13:56:59,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-21 13:56:59,073 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:56:59,074 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:56:59,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 13:56:59,074 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:56:59,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:56:59,074 INFO L85 PathProgramCache]: Analyzing trace with hash 96068139, now seen corresponding path program 1 times [2022-11-21 13:56:59,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:56:59,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529971039] [2022-11-21 13:56:59,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:56:59,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:56:59,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:59,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:56:59,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:59,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-21 13:56:59,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:59,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-21 13:56:59,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:59,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-21 13:56:59,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:59,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-21 13:56:59,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:56:59,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:56:59,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:56:59,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529971039] [2022-11-21 13:56:59,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529971039] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:56:59,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:56:59,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:56:59,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708901172] [2022-11-21 13:56:59,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:56:59,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:56:59,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:56:59,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:56:59,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:56:59,353 INFO L87 Difference]: Start difference. First operand 2700 states and 3533 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:57:03,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:57:03,339 INFO L93 Difference]: Finished difference Result 3920 states and 5495 transitions. [2022-11-21 13:57:03,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 13:57:03,340 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-11-21 13:57:03,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:57:03,354 INFO L225 Difference]: With dead ends: 3920 [2022-11-21 13:57:03,354 INFO L226 Difference]: Without dead ends: 3337 [2022-11-21 13:57:03,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-21 13:57:03,358 INFO L413 NwaCegarLoop]: 517 mSDtfsCounter, 1475 mSDsluCounter, 1728 mSDsCounter, 0 mSdLazyCounter, 3066 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1503 SdHoareTripleChecker+Valid, 2245 SdHoareTripleChecker+Invalid, 3163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 3066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:57:03,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1503 Valid, 2245 Invalid, 3163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 3066 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-21 13:57:03,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3337 states. [2022-11-21 13:57:03,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3337 to 2977. [2022-11-21 13:57:03,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2977 states, 2431 states have (on average 1.3389551624845744) internal successors, (3255), 2461 states have internal predecessors, (3255), 300 states have call successors, (300), 180 states have call predecessors, (300), 244 states have return successors, (407), 338 states have call predecessors, (407), 298 states have call successors, (407) [2022-11-21 13:57:03,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2977 states to 2977 states and 3962 transitions. [2022-11-21 13:57:03,832 INFO L78 Accepts]: Start accepts. Automaton has 2977 states and 3962 transitions. Word has length 145 [2022-11-21 13:57:03,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:57:03,832 INFO L495 AbstractCegarLoop]: Abstraction has 2977 states and 3962 transitions. [2022-11-21 13:57:03,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:57:03,832 INFO L276 IsEmpty]: Start isEmpty. Operand 2977 states and 3962 transitions. [2022-11-21 13:57:03,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-21 13:57:03,835 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:57:03,835 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:57:03,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 13:57:03,836 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:57:03,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:57:03,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1043106025, now seen corresponding path program 1 times [2022-11-21 13:57:03,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:57:03,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152935322] [2022-11-21 13:57:03,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:57:03,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:57:03,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:03,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:57:03,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:03,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-21 13:57:03,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:04,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-21 13:57:04,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:04,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-21 13:57:04,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:04,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-21 13:57:04,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:04,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:57:04,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:57:04,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152935322] [2022-11-21 13:57:04,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152935322] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:57:04,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:57:04,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:57:04,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041973000] [2022-11-21 13:57:04,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:57:04,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:57:04,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:57:04,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:57:04,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:57:04,071 INFO L87 Difference]: Start difference. First operand 2977 states and 3962 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:57:08,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:57:08,087 INFO L93 Difference]: Finished difference Result 4978 states and 7172 transitions. [2022-11-21 13:57:08,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 13:57:08,088 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-11-21 13:57:08,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:57:08,104 INFO L225 Difference]: With dead ends: 4978 [2022-11-21 13:57:08,104 INFO L226 Difference]: Without dead ends: 4118 [2022-11-21 13:57:08,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-21 13:57:08,109 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 1473 mSDsluCounter, 1728 mSDsCounter, 0 mSdLazyCounter, 3062 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1501 SdHoareTripleChecker+Valid, 2243 SdHoareTripleChecker+Invalid, 3161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 3062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:57:08,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1501 Valid, 2243 Invalid, 3161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 3062 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-21 13:57:08,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4118 states. [2022-11-21 13:57:08,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4118 to 3532. [2022-11-21 13:57:08,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3532 states, 2936 states have (on average 1.375340599455041) internal successors, (4038), 2968 states have internal predecessors, (4038), 336 states have call successors, (336), 192 states have call predecessors, (336), 258 states have return successors, (451), 376 states have call predecessors, (451), 334 states have call successors, (451) [2022-11-21 13:57:08,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3532 states to 3532 states and 4825 transitions. [2022-11-21 13:57:08,779 INFO L78 Accepts]: Start accepts. Automaton has 3532 states and 4825 transitions. Word has length 145 [2022-11-21 13:57:08,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:57:08,779 INFO L495 AbstractCegarLoop]: Abstraction has 3532 states and 4825 transitions. [2022-11-21 13:57:08,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:57:08,779 INFO L276 IsEmpty]: Start isEmpty. Operand 3532 states and 4825 transitions. [2022-11-21 13:57:08,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-21 13:57:08,782 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:57:08,782 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:57:08,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-21 13:57:08,783 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:57:08,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:57:08,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1904939627, now seen corresponding path program 1 times [2022-11-21 13:57:08,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:57:08,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314416875] [2022-11-21 13:57:08,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:57:08,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:57:08,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:08,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:57:08,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:08,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-21 13:57:08,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:08,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-21 13:57:08,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:08,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-21 13:57:08,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:09,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-21 13:57:09,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:09,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:57:09,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:57:09,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314416875] [2022-11-21 13:57:09,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314416875] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:57:09,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:57:09,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:57:09,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368456079] [2022-11-21 13:57:09,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:57:09,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:57:09,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:57:09,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:57:09,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:57:09,008 INFO L87 Difference]: Start difference. First operand 3532 states and 4825 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:57:13,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:57:13,347 INFO L93 Difference]: Finished difference Result 7013 states and 10379 transitions. [2022-11-21 13:57:13,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 13:57:13,347 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-11-21 13:57:13,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:57:13,367 INFO L225 Difference]: With dead ends: 7013 [2022-11-21 13:57:13,367 INFO L226 Difference]: Without dead ends: 5598 [2022-11-21 13:57:13,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-21 13:57:13,374 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 1469 mSDsluCounter, 1728 mSDsCounter, 0 mSdLazyCounter, 3053 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1497 SdHoareTripleChecker+Valid, 2243 SdHoareTripleChecker+Invalid, 3152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 3053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:57:13,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1497 Valid, 2243 Invalid, 3152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 3053 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-21 13:57:13,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5598 states. [2022-11-21 13:57:14,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5598 to 4643. [2022-11-21 13:57:14,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4643 states, 3947 states have (on average 1.4198125158348112) internal successors, (5604), 3983 states have internal predecessors, (5604), 408 states have call successors, (408), 216 states have call predecessors, (408), 286 states have return successors, (545), 452 states have call predecessors, (545), 406 states have call successors, (545) [2022-11-21 13:57:14,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4643 states to 4643 states and 6557 transitions. [2022-11-21 13:57:14,055 INFO L78 Accepts]: Start accepts. Automaton has 4643 states and 6557 transitions. Word has length 145 [2022-11-21 13:57:14,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:57:14,056 INFO L495 AbstractCegarLoop]: Abstraction has 4643 states and 6557 transitions. [2022-11-21 13:57:14,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:57:14,056 INFO L276 IsEmpty]: Start isEmpty. Operand 4643 states and 6557 transitions. [2022-11-21 13:57:14,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-21 13:57:14,060 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:57:14,061 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:57:14,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-21 13:57:14,061 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:57:14,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:57:14,062 INFO L85 PathProgramCache]: Analyzing trace with hash -145469271, now seen corresponding path program 1 times [2022-11-21 13:57:14,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:57:14,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206258395] [2022-11-21 13:57:14,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:57:14,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:57:14,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:14,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:57:14,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:14,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-21 13:57:14,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:14,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-21 13:57:14,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:14,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-21 13:57:14,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:14,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-21 13:57:14,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:14,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:57:14,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:57:14,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206258395] [2022-11-21 13:57:14,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206258395] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:57:14,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:57:14,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:57:14,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338173189] [2022-11-21 13:57:14,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:57:14,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:57:14,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:57:14,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:57:14,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:57:14,336 INFO L87 Difference]: Start difference. First operand 4643 states and 6557 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:57:18,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:57:18,972 INFO L93 Difference]: Finished difference Result 11082 states and 16809 transitions. [2022-11-21 13:57:18,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 13:57:18,973 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-11-21 13:57:18,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:57:19,002 INFO L225 Difference]: With dead ends: 11082 [2022-11-21 13:57:19,002 INFO L226 Difference]: Without dead ends: 8556 [2022-11-21 13:57:19,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-21 13:57:19,013 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 1465 mSDsluCounter, 1728 mSDsCounter, 0 mSdLazyCounter, 3044 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 2243 SdHoareTripleChecker+Invalid, 3143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 3044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-21 13:57:19,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1493 Valid, 2243 Invalid, 3143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 3044 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-21 13:57:19,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8556 states. [2022-11-21 13:57:19,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8556 to 6870. [2022-11-21 13:57:19,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6870 states, 5974 states have (on average 1.4633411449615) internal successors, (8742), 6018 states have internal predecessors, (8742), 552 states have call successors, (552), 264 states have call predecessors, (552), 342 states have return successors, (751), 604 states have call predecessors, (751), 550 states have call successors, (751) [2022-11-21 13:57:19,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6870 states to 6870 states and 10045 transitions. [2022-11-21 13:57:19,850 INFO L78 Accepts]: Start accepts. Automaton has 6870 states and 10045 transitions. Word has length 145 [2022-11-21 13:57:19,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:57:19,850 INFO L495 AbstractCegarLoop]: Abstraction has 6870 states and 10045 transitions. [2022-11-21 13:57:19,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:57:19,851 INFO L276 IsEmpty]: Start isEmpty. Operand 6870 states and 10045 transitions. [2022-11-21 13:57:19,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-21 13:57:19,857 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:57:19,857 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:57:19,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-21 13:57:19,857 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:57:19,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:57:19,858 INFO L85 PathProgramCache]: Analyzing trace with hash 342577835, now seen corresponding path program 1 times [2022-11-21 13:57:19,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:57:19,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389327165] [2022-11-21 13:57:19,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:57:19,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:57:19,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:19,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:57:19,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:20,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-21 13:57:20,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:20,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-21 13:57:20,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:20,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-21 13:57:20,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:20,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-21 13:57:20,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:20,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:57:20,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:57:20,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389327165] [2022-11-21 13:57:20,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389327165] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:57:20,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:57:20,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:57:20,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979696896] [2022-11-21 13:57:20,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:57:20,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:57:20,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:57:20,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:57:20,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:57:20,094 INFO L87 Difference]: Start difference. First operand 6870 states and 10045 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:57:22,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:57:22,977 INFO L93 Difference]: Finished difference Result 13387 states and 20520 transitions. [2022-11-21 13:57:22,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 13:57:22,977 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-11-21 13:57:22,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:57:23,003 INFO L225 Difference]: With dead ends: 13387 [2022-11-21 13:57:23,004 INFO L226 Difference]: Without dead ends: 8634 [2022-11-21 13:57:23,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-21 13:57:23,017 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 1314 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 1467 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1343 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 1608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 1467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-21 13:57:23,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1343 Valid, 1076 Invalid, 1608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 1467 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-21 13:57:23,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8634 states. [2022-11-21 13:57:23,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8634 to 6870. [2022-11-21 13:57:23,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6870 states, 5974 states have (on average 1.4604954804151322) internal successors, (8725), 6018 states have internal predecessors, (8725), 552 states have call successors, (552), 264 states have call predecessors, (552), 342 states have return successors, (751), 604 states have call predecessors, (751), 550 states have call successors, (751) [2022-11-21 13:57:23,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6870 states to 6870 states and 10028 transitions. [2022-11-21 13:57:23,806 INFO L78 Accepts]: Start accepts. Automaton has 6870 states and 10028 transitions. Word has length 145 [2022-11-21 13:57:23,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:57:23,806 INFO L495 AbstractCegarLoop]: Abstraction has 6870 states and 10028 transitions. [2022-11-21 13:57:23,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:57:23,807 INFO L276 IsEmpty]: Start isEmpty. Operand 6870 states and 10028 transitions. [2022-11-21 13:57:23,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-21 13:57:23,812 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:57:23,812 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:57:23,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-21 13:57:23,812 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:57:23,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:57:23,813 INFO L85 PathProgramCache]: Analyzing trace with hash -750057367, now seen corresponding path program 1 times [2022-11-21 13:57:23,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:57:23,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891048604] [2022-11-21 13:57:23,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:57:23,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:57:23,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:23,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:57:23,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:23,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-21 13:57:23,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:23,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-21 13:57:23,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:23,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-21 13:57:23,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:24,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-21 13:57:24,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:24,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:57:24,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:57:24,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891048604] [2022-11-21 13:57:24,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891048604] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:57:24,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:57:24,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:57:24,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455222920] [2022-11-21 13:57:24,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:57:24,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:57:24,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:57:24,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:57:24,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:57:24,007 INFO L87 Difference]: Start difference. First operand 6870 states and 10028 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:57:27,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:57:27,153 INFO L93 Difference]: Finished difference Result 13369 states and 20434 transitions. [2022-11-21 13:57:27,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 13:57:27,153 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-11-21 13:57:27,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:57:27,178 INFO L225 Difference]: With dead ends: 13369 [2022-11-21 13:57:27,178 INFO L226 Difference]: Without dead ends: 8616 [2022-11-21 13:57:27,189 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 [2022-11-21 13:57:27,189 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 1186 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 1505 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1215 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 1606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-21 13:57:27,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1215 Valid, 1290 Invalid, 1606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1505 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-21 13:57:27,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8616 states. [2022-11-21 13:57:28,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8616 to 6870. [2022-11-21 13:57:28,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6870 states, 5974 states have (on average 1.4576498158687647) internal successors, (8708), 6018 states have internal predecessors, (8708), 552 states have call successors, (552), 264 states have call predecessors, (552), 342 states have return successors, (751), 604 states have call predecessors, (751), 550 states have call successors, (751) [2022-11-21 13:57:28,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6870 states to 6870 states and 10011 transitions. [2022-11-21 13:57:28,138 INFO L78 Accepts]: Start accepts. Automaton has 6870 states and 10011 transitions. Word has length 145 [2022-11-21 13:57:28,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:57:28,138 INFO L495 AbstractCegarLoop]: Abstraction has 6870 states and 10011 transitions. [2022-11-21 13:57:28,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:57:28,138 INFO L276 IsEmpty]: Start isEmpty. Operand 6870 states and 10011 transitions. [2022-11-21 13:57:28,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-21 13:57:28,142 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:57:28,143 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:57:28,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-21 13:57:28,143 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:57:28,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:57:28,144 INFO L85 PathProgramCache]: Analyzing trace with hash -2032229653, now seen corresponding path program 1 times [2022-11-21 13:57:28,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:57:28,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941810916] [2022-11-21 13:57:28,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:57:28,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:57:28,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:28,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:57:28,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:28,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-21 13:57:28,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:28,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-21 13:57:28,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:28,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-21 13:57:28,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:28,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-21 13:57:28,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:28,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:57:28,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:57:28,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941810916] [2022-11-21 13:57:28,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941810916] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:57:28,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:57:28,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:57:28,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684371327] [2022-11-21 13:57:28,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:57:28,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:57:28,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:57:28,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:57:28,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:57:28,354 INFO L87 Difference]: Start difference. First operand 6870 states and 10011 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:57:34,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:57:34,011 INFO L93 Difference]: Finished difference Result 19164 states and 29455 transitions. [2022-11-21 13:57:34,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 13:57:34,012 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-11-21 13:57:34,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:57:34,054 INFO L225 Difference]: With dead ends: 19164 [2022-11-21 13:57:34,055 INFO L226 Difference]: Without dead ends: 14411 [2022-11-21 13:57:34,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-21 13:57:34,073 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 1451 mSDsluCounter, 1728 mSDsCounter, 0 mSdLazyCounter, 2963 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1479 SdHoareTripleChecker+Valid, 2243 SdHoareTripleChecker+Invalid, 3062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 2963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:57:34,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1479 Valid, 2243 Invalid, 3062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 2963 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-21 13:57:34,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14411 states. [2022-11-21 13:57:35,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14411 to 11386. [2022-11-21 13:57:35,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11386 states, 10090 states have (on average 1.490386521308226) internal successors, (15038), 10150 states have internal predecessors, (15038), 840 states have call successors, (840), 360 states have call predecessors, (840), 454 states have return successors, (1217), 908 states have call predecessors, (1217), 838 states have call successors, (1217) [2022-11-21 13:57:35,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11386 states to 11386 states and 17095 transitions. [2022-11-21 13:57:35,561 INFO L78 Accepts]: Start accepts. Automaton has 11386 states and 17095 transitions. Word has length 145 [2022-11-21 13:57:35,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:57:35,562 INFO L495 AbstractCegarLoop]: Abstraction has 11386 states and 17095 transitions. [2022-11-21 13:57:35,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:57:35,562 INFO L276 IsEmpty]: Start isEmpty. Operand 11386 states and 17095 transitions. [2022-11-21 13:57:35,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-21 13:57:35,568 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:57:35,569 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:57:35,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-21 13:57:35,569 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:57:35,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:57:35,570 INFO L85 PathProgramCache]: Analyzing trace with hash 540734957, now seen corresponding path program 1 times [2022-11-21 13:57:35,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:57:35,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330453811] [2022-11-21 13:57:35,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:57:35,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:57:35,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:35,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:57:35,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:35,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-21 13:57:35,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:35,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-21 13:57:35,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:35,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-21 13:57:35,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:35,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-21 13:57:35,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:35,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:57:35,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:57:35,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330453811] [2022-11-21 13:57:35,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330453811] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:57:35,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:57:35,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:57:35,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456206380] [2022-11-21 13:57:35,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:57:35,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:57:35,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:57:35,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:57:35,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:57:35,769 INFO L87 Difference]: Start difference. First operand 11386 states and 17095 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:57:39,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:57:39,657 INFO L93 Difference]: Finished difference Result 23819 states and 37022 transitions. [2022-11-21 13:57:39,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 13:57:39,658 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-11-21 13:57:39,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:57:39,713 INFO L225 Difference]: With dead ends: 23819 [2022-11-21 13:57:39,713 INFO L226 Difference]: Without dead ends: 14550 [2022-11-21 13:57:39,739 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 [2022-11-21 13:57:39,740 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 1315 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 1420 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1344 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 1561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 1420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-21 13:57:39,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1344 Valid, 1076 Invalid, 1561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 1420 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-21 13:57:39,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14550 states. [2022-11-21 13:57:41,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14550 to 11386. [2022-11-21 13:57:41,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11386 states, 10090 states have (on average 1.4871159563924679) internal successors, (15005), 10150 states have internal predecessors, (15005), 840 states have call successors, (840), 360 states have call predecessors, (840), 454 states have return successors, (1217), 908 states have call predecessors, (1217), 838 states have call successors, (1217) [2022-11-21 13:57:41,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11386 states to 11386 states and 17062 transitions. [2022-11-21 13:57:41,387 INFO L78 Accepts]: Start accepts. Automaton has 11386 states and 17062 transitions. Word has length 145 [2022-11-21 13:57:41,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:57:41,387 INFO L495 AbstractCegarLoop]: Abstraction has 11386 states and 17062 transitions. [2022-11-21 13:57:41,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:57:41,388 INFO L276 IsEmpty]: Start isEmpty. Operand 11386 states and 17062 transitions. [2022-11-21 13:57:41,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-21 13:57:41,394 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:57:41,394 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:57:41,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-21 13:57:41,394 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:57:41,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:57:41,395 INFO L85 PathProgramCache]: Analyzing trace with hash 208091819, now seen corresponding path program 1 times [2022-11-21 13:57:41,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:57:41,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078902587] [2022-11-21 13:57:41,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:57:41,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:57:41,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:41,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:57:41,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:41,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-21 13:57:41,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:41,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-21 13:57:41,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:41,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-21 13:57:41,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:41,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-21 13:57:41,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:41,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:57:41,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:57:41,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078902587] [2022-11-21 13:57:41,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078902587] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:57:41,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:57:41,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:57:41,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749319331] [2022-11-21 13:57:41,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:57:41,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:57:41,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:57:41,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:57:41,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:57:41,602 INFO L87 Difference]: Start difference. First operand 11386 states and 17062 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:57:51,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:57:51,128 INFO L93 Difference]: Finished difference Result 39724 states and 61659 transitions. [2022-11-21 13:57:51,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 13:57:51,131 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-11-21 13:57:51,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:57:51,229 INFO L225 Difference]: With dead ends: 39724 [2022-11-21 13:57:51,230 INFO L226 Difference]: Without dead ends: 30455 [2022-11-21 13:57:51,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-21 13:57:51,256 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 1536 mSDsluCounter, 1720 mSDsCounter, 0 mSdLazyCounter, 3511 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1563 SdHoareTripleChecker+Valid, 2233 SdHoareTripleChecker+Invalid, 3612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 3511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-21 13:57:51,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1563 Valid, 2233 Invalid, 3612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 3511 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-21 13:57:51,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30455 states. [2022-11-21 13:57:54,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30455 to 20380. [2022-11-21 13:57:54,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20380 states, 18316 states have (on average 1.5088993229962875) internal successors, (27637), 18408 states have internal predecessors, (27637), 1384 states have call successors, (1384), 552 states have call predecessors, (1384), 678 states have return successors, (2279), 1484 states have call predecessors, (2279), 1382 states have call successors, (2279) [2022-11-21 13:57:54,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20380 states to 20380 states and 31300 transitions. [2022-11-21 13:57:54,136 INFO L78 Accepts]: Start accepts. Automaton has 20380 states and 31300 transitions. Word has length 145 [2022-11-21 13:57:54,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:57:54,136 INFO L495 AbstractCegarLoop]: Abstraction has 20380 states and 31300 transitions. [2022-11-21 13:57:54,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:57:54,136 INFO L276 IsEmpty]: Start isEmpty. Operand 20380 states and 31300 transitions. [2022-11-21 13:57:54,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-21 13:57:54,145 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:57:54,146 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:57:54,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-21 13:57:54,146 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:57:54,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:57:54,147 INFO L85 PathProgramCache]: Analyzing trace with hash 2137024045, now seen corresponding path program 1 times [2022-11-21 13:57:54,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:57:54,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065401495] [2022-11-21 13:57:54,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:57:54,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:57:54,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:54,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:57:54,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:54,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-21 13:57:54,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:54,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-21 13:57:54,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:54,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-21 13:57:54,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:54,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-21 13:57:54,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:57:54,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:57:54,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:57:54,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065401495] [2022-11-21 13:57:54,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065401495] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:57:54,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:57:54,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:57:54,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344436585] [2022-11-21 13:57:54,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:57:54,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:57:54,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:57:54,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:57:54,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:57:54,348 INFO L87 Difference]: Start difference. First operand 20380 states and 31300 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:58:09,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:58:09,489 INFO L93 Difference]: Finished difference Result 75532 states and 118735 transitions. [2022-11-21 13:58:09,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 13:58:09,490 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-11-21 13:58:09,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:58:09,653 INFO L225 Difference]: With dead ends: 75532 [2022-11-21 13:58:09,653 INFO L226 Difference]: Without dead ends: 57269 [2022-11-21 13:58:09,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-21 13:58:09,708 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 1771 mSDsluCounter, 1717 mSDsCounter, 0 mSdLazyCounter, 2904 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1809 SdHoareTripleChecker+Valid, 2229 SdHoareTripleChecker+Invalid, 3008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 2904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:58:09,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1809 Valid, 2229 Invalid, 3008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 2904 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-21 13:58:09,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57269 states. [2022-11-21 13:58:16,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57269 to 38013. [2022-11-21 13:58:16,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38013 states, 34445 states have (on average 1.5217012628828568) internal successors, (52415), 34601 states have internal predecessors, (52415), 2440 states have call successors, (2440), 936 states have call predecessors, (2440), 1126 states have return successors, (4857), 2604 states have call predecessors, (4857), 2438 states have call successors, (4857) [2022-11-21 13:58:16,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38013 states to 38013 states and 59712 transitions. [2022-11-21 13:58:16,180 INFO L78 Accepts]: Start accepts. Automaton has 38013 states and 59712 transitions. Word has length 145 [2022-11-21 13:58:16,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:58:16,180 INFO L495 AbstractCegarLoop]: Abstraction has 38013 states and 59712 transitions. [2022-11-21 13:58:16,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 13:58:16,181 INFO L276 IsEmpty]: Start isEmpty. Operand 38013 states and 59712 transitions. [2022-11-21 13:58:16,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-21 13:58:16,195 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:58:16,195 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:58:16,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-21 13:58:16,196 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:58:16,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:58:16,196 INFO L85 PathProgramCache]: Analyzing trace with hash -156056981, now seen corresponding path program 1 times [2022-11-21 13:58:16,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:58:16,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852914629] [2022-11-21 13:58:16,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:58:16,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:58:16,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:58:16,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 13:58:16,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:58:16,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-21 13:58:16,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:58:16,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-21 13:58:16,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:58:16,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-21 13:58:16,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:58:16,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-21 13:58:16,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:58:16,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:58:16,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:58:16,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852914629] [2022-11-21 13:58:16,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852914629] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:58:16,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:58:16,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:58:16,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458048945] [2022-11-21 13:58:16,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:58:16,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:58:16,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:58:16,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:58:16,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:58:16,596 INFO L87 Difference]: Start difference. First operand 38013 states and 59712 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)