./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.08.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_343c44af-2a72-4668-90f0-a1c22857b6fd/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343c44af-2a72-4668-90f0-a1c22857b6fd/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343c44af-2a72-4668-90f0-a1c22857b6fd/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343c44af-2a72-4668-90f0-a1c22857b6fd/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.08.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343c44af-2a72-4668-90f0-a1c22857b6fd/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343c44af-2a72-4668-90f0-a1c22857b6fd/bin/uautomizer-uyxdKDjOR8 --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 71189e3cc465fa9296e61b90c4b4428a637cf1ec8723797967b75b70226f0c15 --- 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-2329fc7 [2022-12-13 19:05:32,294 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 19:05:32,295 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 19:05:32,307 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 19:05:32,308 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 19:05:32,308 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 19:05:32,309 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 19:05:32,310 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 19:05:32,311 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 19:05:32,312 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 19:05:32,312 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 19:05:32,313 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 19:05:32,313 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 19:05:32,314 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 19:05:32,314 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 19:05:32,315 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 19:05:32,316 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 19:05:32,316 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 19:05:32,317 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 19:05:32,319 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 19:05:32,319 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 19:05:32,320 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 19:05:32,321 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 19:05:32,322 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 19:05:32,324 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 19:05:32,324 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 19:05:32,324 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 19:05:32,324 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 19:05:32,325 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 19:05:32,325 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 19:05:32,326 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 19:05:32,326 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 19:05:32,327 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 19:05:32,327 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 19:05:32,328 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 19:05:32,328 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 19:05:32,328 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 19:05:32,328 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 19:05:32,329 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 19:05:32,329 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 19:05:32,329 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 19:05:32,330 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343c44af-2a72-4668-90f0-a1c22857b6fd/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 19:05:32,343 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 19:05:32,343 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 19:05:32,343 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 19:05:32,343 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 19:05:32,344 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 19:05:32,344 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 19:05:32,344 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 19:05:32,344 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 19:05:32,344 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 19:05:32,345 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 19:05:32,345 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 19:05:32,345 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 19:05:32,345 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 19:05:32,345 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 19:05:32,345 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 19:05:32,345 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 19:05:32,345 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 19:05:32,345 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 19:05:32,345 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 19:05:32,346 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 19:05:32,346 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 19:05:32,346 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 19:05:32,346 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 19:05:32,346 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 19:05:32,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:05:32,346 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 19:05:32,346 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 19:05:32,346 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 19:05:32,346 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 19:05:32,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 19:05:32,347 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 19:05:32,347 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 19:05:32,347 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 19:05:32,347 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 19:05:32,347 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 19:05:32,347 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_343c44af-2a72-4668-90f0-a1c22857b6fd/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343c44af-2a72-4668-90f0-a1c22857b6fd/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71189e3cc465fa9296e61b90c4b4428a637cf1ec8723797967b75b70226f0c15 [2022-12-13 19:05:32,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 19:05:32,533 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 19:05:32,535 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 19:05:32,536 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 19:05:32,537 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 19:05:32,537 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343c44af-2a72-4668-90f0-a1c22857b6fd/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.08.cil-1.c [2022-12-13 19:05:35,158 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 19:05:35,351 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 19:05:35,351 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343c44af-2a72-4668-90f0-a1c22857b6fd/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.08.cil-1.c [2022-12-13 19:05:35,364 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343c44af-2a72-4668-90f0-a1c22857b6fd/bin/uautomizer-uyxdKDjOR8/data/5b23dac48/31536f0fa954484ebda35fbf00841450/FLAG2e8b41ecf [2022-12-13 19:05:35,374 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343c44af-2a72-4668-90f0-a1c22857b6fd/bin/uautomizer-uyxdKDjOR8/data/5b23dac48/31536f0fa954484ebda35fbf00841450 [2022-12-13 19:05:35,376 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 19:05:35,377 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 19:05:35,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 19:05:35,378 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 19:05:35,380 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 19:05:35,381 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:05:35" (1/1) ... [2022-12-13 19:05:35,382 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bc0fda1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:05:35, skipping insertion in model container [2022-12-13 19:05:35,382 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:05:35" (1/1) ... [2022-12-13 19:05:35,387 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 19:05:35,416 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 19:05:35,519 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_343c44af-2a72-4668-90f0-a1c22857b6fd/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.08.cil-1.c[913,926] [2022-12-13 19:05:35,551 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_343c44af-2a72-4668-90f0-a1c22857b6fd/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.08.cil-1.c[5977,5990] [2022-12-13 19:05:35,604 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:05:35,614 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 19:05:35,623 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_343c44af-2a72-4668-90f0-a1c22857b6fd/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.08.cil-1.c[913,926] [2022-12-13 19:05:35,634 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_343c44af-2a72-4668-90f0-a1c22857b6fd/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.08.cil-1.c[5977,5990] [2022-12-13 19:05:35,665 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:05:35,679 INFO L208 MainTranslator]: Completed translation [2022-12-13 19:05:35,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:05:35 WrapperNode [2022-12-13 19:05:35,679 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 19:05:35,680 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 19:05:35,680 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 19:05:35,680 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 19:05:35,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:05:35" (1/1) ... [2022-12-13 19:05:35,694 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:05:35" (1/1) ... [2022-12-13 19:05:35,724 INFO L138 Inliner]: procedures = 64, calls = 72, calls flagged for inlining = 39, calls inlined = 39, statements flattened = 823 [2022-12-13 19:05:35,724 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 19:05:35,724 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 19:05:35,724 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 19:05:35,725 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 19:05:35,731 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:05:35" (1/1) ... [2022-12-13 19:05:35,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:05:35" (1/1) ... [2022-12-13 19:05:35,734 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:05:35" (1/1) ... [2022-12-13 19:05:35,734 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:05:35" (1/1) ... [2022-12-13 19:05:35,742 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:05:35" (1/1) ... [2022-12-13 19:05:35,749 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:05:35" (1/1) ... [2022-12-13 19:05:35,751 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:05:35" (1/1) ... [2022-12-13 19:05:35,753 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:05:35" (1/1) ... [2022-12-13 19:05:35,756 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 19:05:35,757 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 19:05:35,757 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 19:05:35,757 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 19:05:35,757 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:05:35" (1/1) ... [2022-12-13 19:05:35,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:05:35,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343c44af-2a72-4668-90f0-a1c22857b6fd/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:05:35,781 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343c44af-2a72-4668-90f0-a1c22857b6fd/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 19:05:35,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343c44af-2a72-4668-90f0-a1c22857b6fd/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 19:05:35,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 19:05:35,808 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-12-13 19:05:35,809 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-12-13 19:05:35,809 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2022-12-13 19:05:35,809 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2022-12-13 19:05:35,809 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-12-13 19:05:35,809 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-12-13 19:05:35,809 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-12-13 19:05:35,809 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-12-13 19:05:35,809 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-12-13 19:05:35,809 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-12-13 19:05:35,809 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-12-13 19:05:35,809 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-12-13 19:05:35,810 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-12-13 19:05:35,810 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-12-13 19:05:35,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 19:05:35,810 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-12-13 19:05:35,810 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-12-13 19:05:35,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 19:05:35,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 19:05:35,810 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-12-13 19:05:35,810 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-12-13 19:05:35,900 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 19:05:35,902 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 19:05:36,461 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 19:05:36,469 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 19:05:36,469 INFO L300 CfgBuilder]: Removed 15 assume(true) statements. [2022-12-13 19:05:36,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:05:36 BoogieIcfgContainer [2022-12-13 19:05:36,472 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 19:05:36,473 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 19:05:36,474 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 19:05:36,476 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 19:05:36,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 07:05:35" (1/3) ... [2022-12-13 19:05:36,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f10af40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:05:36, skipping insertion in model container [2022-12-13 19:05:36,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:05:35" (2/3) ... [2022-12-13 19:05:36,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f10af40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:05:36, skipping insertion in model container [2022-12-13 19:05:36,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:05:36" (3/3) ... [2022-12-13 19:05:36,478 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.08.cil-1.c [2022-12-13 19:05:36,494 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 19:05:36,494 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 19:05:36,536 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:05:36,541 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;@357635ca, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:05:36,541 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 19:05:36,545 INFO L276 IsEmpty]: Start isEmpty. Operand has 354 states, 314 states have (on average 1.6305732484076434) internal successors, (512), 319 states have internal predecessors, (512), 28 states have call successors, (28), 9 states have call predecessors, (28), 9 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2022-12-13 19:05:36,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-12-13 19:05:36,553 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:05:36,553 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] [2022-12-13 19:05:36,554 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:05:36,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:05:36,557 INFO L85 PathProgramCache]: Analyzing trace with hash -728515796, now seen corresponding path program 1 times [2022-12-13 19:05:36,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:05:36,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796891318] [2022-12-13 19:05:36,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:05:36,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:05:36,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:36,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:05:36,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:36,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 19:05:36,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:36,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:05:36,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:05:36,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796891318] [2022-12-13 19:05:36,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796891318] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:05:36,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:05:36,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:05:36,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833497333] [2022-12-13 19:05:36,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:05:36,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:05:36,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:05:36,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:05:36,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:05:36,778 INFO L87 Difference]: Start difference. First operand has 354 states, 314 states have (on average 1.6305732484076434) internal successors, (512), 319 states have internal predecessors, (512), 28 states have call successors, (28), 9 states have call predecessors, (28), 9 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 19:05:37,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:05:37,234 INFO L93 Difference]: Finished difference Result 695 states and 1111 transitions. [2022-12-13 19:05:37,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:05:37,236 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 44 [2022-12-13 19:05:37,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:05:37,244 INFO L225 Difference]: With dead ends: 695 [2022-12-13 19:05:37,244 INFO L226 Difference]: Without dead ends: 353 [2022-12-13 19:05:37,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:05:37,249 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 307 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 19:05:37,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 830 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 19:05:37,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2022-12-13 19:05:37,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 344. [2022-12-13 19:05:37,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 306 states have (on average 1.5326797385620916) internal successors, (469), 309 states have internal predecessors, (469), 28 states have call successors, (28), 9 states have call predecessors, (28), 8 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-12-13 19:05:37,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 523 transitions. [2022-12-13 19:05:37,293 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 523 transitions. Word has length 44 [2022-12-13 19:05:37,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:05:37,293 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 523 transitions. [2022-12-13 19:05:37,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 19:05:37,294 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 523 transitions. [2022-12-13 19:05:37,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-12-13 19:05:37,295 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:05:37,295 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] [2022-12-13 19:05:37,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 19:05:37,296 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:05:37,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:05:37,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1116851370, now seen corresponding path program 1 times [2022-12-13 19:05:37,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:05:37,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144473852] [2022-12-13 19:05:37,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:05:37,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:05:37,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:37,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:05:37,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:37,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 19:05:37,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:37,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:05:37,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:05:37,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144473852] [2022-12-13 19:05:37,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144473852] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:05:37,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:05:37,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:05:37,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336609417] [2022-12-13 19:05:37,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:05:37,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:05:37,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:05:37,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:05:37,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:05:37,375 INFO L87 Difference]: Start difference. First operand 344 states and 523 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 19:05:37,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:05:37,666 INFO L93 Difference]: Finished difference Result 476 states and 708 transitions. [2022-12-13 19:05:37,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:05:37,667 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2022-12-13 19:05:37,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:05:37,671 INFO L225 Difference]: With dead ends: 476 [2022-12-13 19:05:37,671 INFO L226 Difference]: Without dead ends: 414 [2022-12-13 19:05:37,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:05:37,673 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 695 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 19:05:37,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [717 Valid, 668 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 19:05:37,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-12-13 19:05:37,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 408. [2022-12-13 19:05:37,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 363 states have (on average 1.5013774104683195) internal successors, (545), 367 states have internal predecessors, (545), 32 states have call successors, (32), 11 states have call predecessors, (32), 11 states have return successors, (36), 30 states have call predecessors, (36), 30 states have call successors, (36) [2022-12-13 19:05:37,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 613 transitions. [2022-12-13 19:05:37,710 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 613 transitions. Word has length 44 [2022-12-13 19:05:37,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:05:37,710 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 613 transitions. [2022-12-13 19:05:37,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 19:05:37,710 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 613 transitions. [2022-12-13 19:05:37,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-12-13 19:05:37,712 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:05:37,712 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] [2022-12-13 19:05:37,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 19:05:37,713 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:05:37,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:05:37,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1978263529, now seen corresponding path program 1 times [2022-12-13 19:05:37,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:05:37,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343878932] [2022-12-13 19:05:37,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:05:37,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:05:37,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:37,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:05:37,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:37,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:05:37,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:37,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:05:37,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:05:37,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343878932] [2022-12-13 19:05:37,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343878932] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:05:37,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:05:37,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:05:37,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064777502] [2022-12-13 19:05:37,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:05:37,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:05:37,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:05:37,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:05:37,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:05:37,774 INFO L87 Difference]: Start difference. First operand 408 states and 613 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 19:05:38,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:05:38,077 INFO L93 Difference]: Finished difference Result 656 states and 953 transitions. [2022-12-13 19:05:38,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:05:38,078 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2022-12-13 19:05:38,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:05:38,080 INFO L225 Difference]: With dead ends: 656 [2022-12-13 19:05:38,080 INFO L226 Difference]: Without dead ends: 532 [2022-12-13 19:05:38,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:05:38,082 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 288 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 19:05:38,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 934 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 19:05:38,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2022-12-13 19:05:38,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 475. [2022-12-13 19:05:38,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 424 states have (on average 1.4834905660377358) internal successors, (629), 428 states have internal predecessors, (629), 35 states have call successors, (35), 14 states have call predecessors, (35), 14 states have return successors, (39), 33 states have call predecessors, (39), 33 states have call successors, (39) [2022-12-13 19:05:38,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 703 transitions. [2022-12-13 19:05:38,103 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 703 transitions. Word has length 45 [2022-12-13 19:05:38,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:05:38,104 INFO L495 AbstractCegarLoop]: Abstraction has 475 states and 703 transitions. [2022-12-13 19:05:38,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 19:05:38,104 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 703 transitions. [2022-12-13 19:05:38,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-12-13 19:05:38,105 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:05:38,105 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] [2022-12-13 19:05:38,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 19:05:38,105 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:05:38,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:05:38,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1032346306, now seen corresponding path program 1 times [2022-12-13 19:05:38,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:05:38,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339470703] [2022-12-13 19:05:38,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:05:38,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:05:38,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:38,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:05:38,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:38,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 19:05:38,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:38,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:05:38,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:05:38,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339470703] [2022-12-13 19:05:38,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339470703] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:05:38,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:05:38,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:05:38,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207402748] [2022-12-13 19:05:38,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:05:38,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:05:38,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:05:38,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:05:38,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:05:38,157 INFO L87 Difference]: Start difference. First operand 475 states and 703 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 19:05:38,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:05:38,449 INFO L93 Difference]: Finished difference Result 883 states and 1262 transitions. [2022-12-13 19:05:38,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:05:38,450 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2022-12-13 19:05:38,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:05:38,453 INFO L225 Difference]: With dead ends: 883 [2022-12-13 19:05:38,453 INFO L226 Difference]: Without dead ends: 692 [2022-12-13 19:05:38,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:05:38,455 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 712 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 19:05:38,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 687 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 19:05:38,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2022-12-13 19:05:38,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 640. [2022-12-13 19:05:38,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 570 states have (on average 1.436842105263158) internal successors, (819), 577 states have internal predecessors, (819), 46 states have call successors, (46), 21 states have call predecessors, (46), 22 states have return successors, (56), 42 states have call predecessors, (56), 44 states have call successors, (56) [2022-12-13 19:05:38,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 921 transitions. [2022-12-13 19:05:38,484 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 921 transitions. Word has length 45 [2022-12-13 19:05:38,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:05:38,484 INFO L495 AbstractCegarLoop]: Abstraction has 640 states and 921 transitions. [2022-12-13 19:05:38,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 19:05:38,484 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 921 transitions. [2022-12-13 19:05:38,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-12-13 19:05:38,486 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:05:38,486 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 19:05:38,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 19:05:38,486 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:05:38,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:05:38,486 INFO L85 PathProgramCache]: Analyzing trace with hash 875979578, now seen corresponding path program 1 times [2022-12-13 19:05:38,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:05:38,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117166393] [2022-12-13 19:05:38,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:05:38,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:05:38,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:38,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:05:38,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:38,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 19:05:38,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:38,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 19:05:38,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:38,553 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 19:05:38,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:05:38,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117166393] [2022-12-13 19:05:38,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117166393] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:05:38,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:05:38,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:05:38,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618246283] [2022-12-13 19:05:38,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:05:38,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:05:38,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:05:38,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:05:38,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:05:38,555 INFO L87 Difference]: Start difference. First operand 640 states and 921 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 19:05:38,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:05:38,899 INFO L93 Difference]: Finished difference Result 984 states and 1382 transitions. [2022-12-13 19:05:38,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:05:38,900 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 62 [2022-12-13 19:05:38,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:05:38,902 INFO L225 Difference]: With dead ends: 984 [2022-12-13 19:05:38,902 INFO L226 Difference]: Without dead ends: 747 [2022-12-13 19:05:38,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:05:38,904 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 272 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 19:05:38,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 984 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 19:05:38,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2022-12-13 19:05:38,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 709. [2022-12-13 19:05:38,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 709 states, 630 states have (on average 1.4111111111111112) internal successors, (889), 638 states have internal predecessors, (889), 51 states have call successors, (51), 24 states have call predecessors, (51), 26 states have return successors, (65), 47 states have call predecessors, (65), 49 states have call successors, (65) [2022-12-13 19:05:38,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 1005 transitions. [2022-12-13 19:05:38,936 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 1005 transitions. Word has length 62 [2022-12-13 19:05:38,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:05:38,937 INFO L495 AbstractCegarLoop]: Abstraction has 709 states and 1005 transitions. [2022-12-13 19:05:38,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 19:05:38,937 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 1005 transitions. [2022-12-13 19:05:38,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-12-13 19:05:38,938 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:05:38,938 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 19:05:38,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 19:05:38,938 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:05:38,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:05:38,938 INFO L85 PathProgramCache]: Analyzing trace with hash 263296175, now seen corresponding path program 1 times [2022-12-13 19:05:38,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:05:38,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120209399] [2022-12-13 19:05:38,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:05:38,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:05:38,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:38,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:05:38,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:38,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 19:05:38,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:38,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-12-13 19:05:38,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:38,986 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-13 19:05:38,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:05:38,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120209399] [2022-12-13 19:05:38,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120209399] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:05:38,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:05:38,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:05:38,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594249471] [2022-12-13 19:05:38,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:05:38,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:05:38,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:05:38,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:05:38,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:05:38,988 INFO L87 Difference]: Start difference. First operand 709 states and 1005 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 19:05:39,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:05:39,273 INFO L93 Difference]: Finished difference Result 1260 states and 1727 transitions. [2022-12-13 19:05:39,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:05:39,273 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 67 [2022-12-13 19:05:39,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:05:39,276 INFO L225 Difference]: With dead ends: 1260 [2022-12-13 19:05:39,276 INFO L226 Difference]: Without dead ends: 882 [2022-12-13 19:05:39,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:05:39,277 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 699 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 19:05:39,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [721 Valid, 685 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 19:05:39,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882 states. [2022-12-13 19:05:39,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882 to 827. [2022-12-13 19:05:39,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 827 states, 735 states have (on average 1.380952380952381) internal successors, (1015), 744 states have internal predecessors, (1015), 58 states have call successors, (58), 29 states have call predecessors, (58), 32 states have return successors, (76), 54 states have call predecessors, (76), 56 states have call successors, (76) [2022-12-13 19:05:39,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1149 transitions. [2022-12-13 19:05:39,314 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1149 transitions. Word has length 67 [2022-12-13 19:05:39,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:05:39,314 INFO L495 AbstractCegarLoop]: Abstraction has 827 states and 1149 transitions. [2022-12-13 19:05:39,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 19:05:39,314 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1149 transitions. [2022-12-13 19:05:39,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-12-13 19:05:39,315 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:05:39,316 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:05:39,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 19:05:39,316 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:05:39,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:05:39,316 INFO L85 PathProgramCache]: Analyzing trace with hash -160972064, now seen corresponding path program 1 times [2022-12-13 19:05:39,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:05:39,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133637343] [2022-12-13 19:05:39,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:05:39,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:05:39,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:39,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:05:39,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:39,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 19:05:39,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:39,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 19:05:39,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:39,413 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 19:05:39,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:05:39,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133637343] [2022-12-13 19:05:39,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133637343] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:05:39,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202530982] [2022-12-13 19:05:39,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:05:39,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:05:39,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343c44af-2a72-4668-90f0-a1c22857b6fd/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:05:39,416 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343c44af-2a72-4668-90f0-a1c22857b6fd/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:05:39,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343c44af-2a72-4668-90f0-a1c22857b6fd/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 19:05:39,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:39,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 19:05:39,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:05:39,591 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:05:39,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:05:39,628 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-13 19:05:39,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202530982] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 19:05:39,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 19:05:39,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 8 [2022-12-13 19:05:39,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761112942] [2022-12-13 19:05:39,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:05:39,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:05:39,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:05:39,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:05:39,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:05:39,630 INFO L87 Difference]: Start difference. First operand 827 states and 1149 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 19:05:39,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:05:39,785 INFO L93 Difference]: Finished difference Result 882 states and 1216 transitions. [2022-12-13 19:05:39,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:05:39,785 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 68 [2022-12-13 19:05:39,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:05:39,789 INFO L225 Difference]: With dead ends: 882 [2022-12-13 19:05:39,790 INFO L226 Difference]: Without dead ends: 879 [2022-12-13 19:05:39,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-13 19:05:39,791 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 945 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 945 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:05:39,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [945 Valid, 615 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:05:39,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2022-12-13 19:05:39,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 826. [2022-12-13 19:05:39,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 826 states, 735 states have (on average 1.3782312925170068) internal successors, (1013), 743 states have internal predecessors, (1013), 57 states have call successors, (57), 29 states have call predecessors, (57), 32 states have return successors, (76), 54 states have call predecessors, (76), 56 states have call successors, (76) [2022-12-13 19:05:39,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 1146 transitions. [2022-12-13 19:05:39,847 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 1146 transitions. Word has length 68 [2022-12-13 19:05:39,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:05:39,848 INFO L495 AbstractCegarLoop]: Abstraction has 826 states and 1146 transitions. [2022-12-13 19:05:39,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 19:05:39,848 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 1146 transitions. [2022-12-13 19:05:39,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-13 19:05:39,850 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:05:39,850 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 19:05:39,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343c44af-2a72-4668-90f0-a1c22857b6fd/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 19:05:40,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343c44af-2a72-4668-90f0-a1c22857b6fd/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:05:40,051 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:05:40,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:05:40,051 INFO L85 PathProgramCache]: Analyzing trace with hash -696266350, now seen corresponding path program 1 times [2022-12-13 19:05:40,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:05:40,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270671890] [2022-12-13 19:05:40,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:05:40,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:05:40,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:40,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:05:40,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:40,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 19:05:40,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:40,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 19:05:40,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:40,159 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 19:05:40,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:05:40,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270671890] [2022-12-13 19:05:40,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270671890] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:05:40,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031085632] [2022-12-13 19:05:40,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:05:40,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:05:40,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343c44af-2a72-4668-90f0-a1c22857b6fd/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:05:40,161 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343c44af-2a72-4668-90f0-a1c22857b6fd/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:05:40,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343c44af-2a72-4668-90f0-a1c22857b6fd/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 19:05:40,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:40,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 19:05:40,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:05:40,441 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:05:40,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:05:40,508 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-13 19:05:40,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031085632] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:05:40,508 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:05:40,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 11 [2022-12-13 19:05:40,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537714176] [2022-12-13 19:05:40,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:05:40,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 19:05:40,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:05:40,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 19:05:40,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-12-13 19:05:40,510 INFO L87 Difference]: Start difference. First operand 826 states and 1146 transitions. Second operand has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2022-12-13 19:05:41,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:05:41,783 INFO L93 Difference]: Finished difference Result 2355 states and 3143 transitions. [2022-12-13 19:05:41,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-12-13 19:05:41,784 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 69 [2022-12-13 19:05:41,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:05:41,795 INFO L225 Difference]: With dead ends: 2355 [2022-12-13 19:05:41,796 INFO L226 Difference]: Without dead ends: 1911 [2022-12-13 19:05:41,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=324, Invalid=1482, Unknown=0, NotChecked=0, Total=1806 [2022-12-13 19:05:41,797 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 1037 mSDsluCounter, 2554 mSDsCounter, 0 mSdLazyCounter, 1751 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1066 SdHoareTripleChecker+Valid, 3008 SdHoareTripleChecker+Invalid, 1793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 19:05:41,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1066 Valid, 3008 Invalid, 1793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1751 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 19:05:41,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1911 states. [2022-12-13 19:05:41,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1911 to 1200. [2022-12-13 19:05:41,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1200 states, 1073 states have (on average 1.3383038210624418) internal successors, (1436), 1087 states have internal predecessors, (1436), 76 states have call successors, (76), 42 states have call predecessors, (76), 49 states have return successors, (107), 71 states have call predecessors, (107), 75 states have call successors, (107) [2022-12-13 19:05:41,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1200 states to 1200 states and 1619 transitions. [2022-12-13 19:05:41,862 INFO L78 Accepts]: Start accepts. Automaton has 1200 states and 1619 transitions. Word has length 69 [2022-12-13 19:05:41,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:05:41,862 INFO L495 AbstractCegarLoop]: Abstraction has 1200 states and 1619 transitions. [2022-12-13 19:05:41,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2022-12-13 19:05:41,862 INFO L276 IsEmpty]: Start isEmpty. Operand 1200 states and 1619 transitions. [2022-12-13 19:05:41,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-12-13 19:05:41,864 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:05:41,864 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-12-13 19:05:41,869 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343c44af-2a72-4668-90f0-a1c22857b6fd/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 19:05:42,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343c44af-2a72-4668-90f0-a1c22857b6fd/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:05:42,065 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:05:42,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:05:42,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1233481266, now seen corresponding path program 1 times [2022-12-13 19:05:42,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:05:42,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995986115] [2022-12-13 19:05:42,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:05:42,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:05:42,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:42,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:05:42,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:42,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 19:05:42,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:42,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 19:05:42,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:42,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 19:05:42,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:42,261 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-12-13 19:05:42,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:05:42,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995986115] [2022-12-13 19:05:42,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995986115] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:05:42,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791802692] [2022-12-13 19:05:42,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:05:42,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:05:42,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343c44af-2a72-4668-90f0-a1c22857b6fd/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:05:42,263 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343c44af-2a72-4668-90f0-a1c22857b6fd/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:05:42,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343c44af-2a72-4668-90f0-a1c22857b6fd/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 19:05:42,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:42,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 19:05:42,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:05:42,376 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-13 19:05:42,376 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:05:42,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791802692] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:05:42,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:05:42,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-12-13 19:05:42,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515429960] [2022-12-13 19:05:42,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:05:42,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:05:42,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:05:42,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:05:42,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:05:42,378 INFO L87 Difference]: Start difference. First operand 1200 states and 1619 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-12-13 19:05:42,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:05:42,436 INFO L93 Difference]: Finished difference Result 1844 states and 2457 transitions. [2022-12-13 19:05:42,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:05:42,436 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 88 [2022-12-13 19:05:42,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:05:42,439 INFO L225 Difference]: With dead ends: 1844 [2022-12-13 19:05:42,439 INFO L226 Difference]: Without dead ends: 1096 [2022-12-13 19:05:42,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:05:42,441 INFO L413 NwaCegarLoop]: 554 mSDtfsCounter, 484 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:05:42,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 628 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:05:42,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2022-12-13 19:05:42,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 1084. [2022-12-13 19:05:42,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1084 states, 970 states have (on average 1.3391752577319587) internal successors, (1299), 984 states have internal predecessors, (1299), 69 states have call successors, (69), 37 states have call predecessors, (69), 43 states have return successors, (96), 63 states have call predecessors, (96), 68 states have call successors, (96) [2022-12-13 19:05:42,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1084 states to 1084 states and 1464 transitions. [2022-12-13 19:05:42,498 INFO L78 Accepts]: Start accepts. Automaton has 1084 states and 1464 transitions. Word has length 88 [2022-12-13 19:05:42,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:05:42,499 INFO L495 AbstractCegarLoop]: Abstraction has 1084 states and 1464 transitions. [2022-12-13 19:05:42,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-12-13 19:05:42,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1084 states and 1464 transitions. [2022-12-13 19:05:42,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-12-13 19:05:42,500 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:05:42,501 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:05:42,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343c44af-2a72-4668-90f0-a1c22857b6fd/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 19:05:42,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343c44af-2a72-4668-90f0-a1c22857b6fd/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:05:42,701 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:05:42,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:05:42,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1258930737, now seen corresponding path program 1 times [2022-12-13 19:05:42,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:05:42,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406635836] [2022-12-13 19:05:42,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:05:42,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:05:42,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:42,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 19:05:42,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:42,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 19:05:42,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:42,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 19:05:42,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:42,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 19:05:42,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:42,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-12-13 19:05:42,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:42,796 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-12-13 19:05:42,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:05:42,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406635836] [2022-12-13 19:05:42,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406635836] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:05:42,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524635180] [2022-12-13 19:05:42,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:05:42,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:05:42,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343c44af-2a72-4668-90f0-a1c22857b6fd/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:05:42,798 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343c44af-2a72-4668-90f0-a1c22857b6fd/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:05:42,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343c44af-2a72-4668-90f0-a1c22857b6fd/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 19:05:42,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:42,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 19:05:42,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:05:42,896 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-13 19:05:42,897 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:05:42,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524635180] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:05:42,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:05:42,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-12-13 19:05:42,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572475253] [2022-12-13 19:05:42,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:05:42,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:05:42,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:05:42,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:05:42,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:05:42,898 INFO L87 Difference]: Start difference. First operand 1084 states and 1464 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-12-13 19:05:42,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:05:42,961 INFO L93 Difference]: Finished difference Result 1396 states and 1852 transitions. [2022-12-13 19:05:42,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:05:42,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 103 [2022-12-13 19:05:42,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:05:42,963 INFO L225 Difference]: With dead ends: 1396 [2022-12-13 19:05:42,963 INFO L226 Difference]: Without dead ends: 278 [2022-12-13 19:05:42,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:05:42,965 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 61 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:05:42,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 1065 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:05:42,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-12-13 19:05:42,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2022-12-13 19:05:42,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 249 states have (on average 1.5582329317269077) internal successors, (388), 250 states have internal predecessors, (388), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-12-13 19:05:42,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 432 transitions. [2022-12-13 19:05:42,981 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 432 transitions. Word has length 103 [2022-12-13 19:05:42,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:05:42,981 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 432 transitions. [2022-12-13 19:05:42,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-12-13 19:05:42,981 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 432 transitions. [2022-12-13 19:05:42,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-13 19:05:42,982 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:05:42,983 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:05:42,989 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343c44af-2a72-4668-90f0-a1c22857b6fd/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 19:05:43,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_343c44af-2a72-4668-90f0-a1c22857b6fd/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 19:05:43,184 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:05:43,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:05:43,184 INFO L85 PathProgramCache]: Analyzing trace with hash 167686775, now seen corresponding path program 1 times [2022-12-13 19:05:43,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:05:43,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339601491] [2022-12-13 19:05:43,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:05:43,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:05:43,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:43,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 19:05:43,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:43,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 19:05:43,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:43,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:05:43,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:43,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 19:05:43,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:43,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 19:05:43,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:43,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:05:43,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:05:43,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339601491] [2022-12-13 19:05:43,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339601491] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:05:43,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:05:43,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 19:05:43,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676810413] [2022-12-13 19:05:43,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:05:43,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:05:43,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:05:43,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:05:43,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:05:43,292 INFO L87 Difference]: Start difference. First operand 278 states and 432 transitions. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 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) [2022-12-13 19:05:44,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:05:44,124 INFO L93 Difference]: Finished difference Result 645 states and 1020 transitions. [2022-12-13 19:05:44,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:05:44,125 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 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 134 [2022-12-13 19:05:44,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:05:44,126 INFO L225 Difference]: With dead ends: 645 [2022-12-13 19:05:44,126 INFO L226 Difference]: Without dead ends: 376 [2022-12-13 19:05:44,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:05:44,127 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 732 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 752 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 19:05:44,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [752 Valid, 544 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 728 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 19:05:44,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2022-12-13 19:05:44,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 278. [2022-12-13 19:05:44,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 249 states have (on average 1.5542168674698795) internal successors, (387), 250 states have internal predecessors, (387), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-12-13 19:05:44,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 431 transitions. [2022-12-13 19:05:44,146 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 431 transitions. Word has length 134 [2022-12-13 19:05:44,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:05:44,146 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 431 transitions. [2022-12-13 19:05:44,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 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) [2022-12-13 19:05:44,146 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 431 transitions. [2022-12-13 19:05:44,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-13 19:05:44,147 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:05:44,147 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] [2022-12-13 19:05:44,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 19:05:44,147 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:05:44,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:05:44,147 INFO L85 PathProgramCache]: Analyzing trace with hash -779351111, now seen corresponding path program 1 times [2022-12-13 19:05:44,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:05:44,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014069346] [2022-12-13 19:05:44,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:05:44,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:05:44,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:44,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 19:05:44,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:44,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 19:05:44,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:44,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:05:44,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:44,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 19:05:44,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:44,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 19:05:44,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:44,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:05:44,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:05:44,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014069346] [2022-12-13 19:05:44,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014069346] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:05:44,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:05:44,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 19:05:44,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577412750] [2022-12-13 19:05:44,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:05:44,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:05:44,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:05:44,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:05:44,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:05:44,277 INFO L87 Difference]: Start difference. First operand 278 states and 431 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 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) [2022-12-13 19:05:45,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:05:45,896 INFO L93 Difference]: Finished difference Result 1006 states and 1598 transitions. [2022-12-13 19:05:45,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 19:05:45,896 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 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 134 [2022-12-13 19:05:45,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:05:45,899 INFO L225 Difference]: With dead ends: 1006 [2022-12-13 19:05:45,899 INFO L226 Difference]: Without dead ends: 745 [2022-12-13 19:05:45,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-12-13 19:05:45,901 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 1101 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 1679 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1116 SdHoareTripleChecker+Valid, 956 SdHoareTripleChecker+Invalid, 1771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-13 19:05:45,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1116 Valid, 956 Invalid, 1771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1679 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-12-13 19:05:45,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2022-12-13 19:05:45,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 550. [2022-12-13 19:05:45,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 497 states have (on average 1.567404426559356) internal successors, (779), 499 states have internal predecessors, (779), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2022-12-13 19:05:45,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 860 transitions. [2022-12-13 19:05:45,969 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 860 transitions. Word has length 134 [2022-12-13 19:05:45,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:05:45,969 INFO L495 AbstractCegarLoop]: Abstraction has 550 states and 860 transitions. [2022-12-13 19:05:45,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 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) [2022-12-13 19:05:45,970 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 860 transitions. [2022-12-13 19:05:45,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-13 19:05:45,971 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:05:45,971 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] [2022-12-13 19:05:45,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 19:05:45,971 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:05:45,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:05:45,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1809112637, now seen corresponding path program 1 times [2022-12-13 19:05:45,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:05:45,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821870904] [2022-12-13 19:05:45,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:05:45,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:05:45,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:46,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 19:05:46,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:46,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 19:05:46,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:46,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:05:46,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:46,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 19:05:46,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:46,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 19:05:46,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:46,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:05:46,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:05:46,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821870904] [2022-12-13 19:05:46,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821870904] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:05:46,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:05:46,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 19:05:46,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066257961] [2022-12-13 19:05:46,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:05:46,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:05:46,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:05:46,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:05:46,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:05:46,146 INFO L87 Difference]: Start difference. First operand 550 states and 860 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-12-13 19:05:48,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:05:48,086 INFO L93 Difference]: Finished difference Result 1659 states and 2636 transitions. [2022-12-13 19:05:48,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 19:05:48,086 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2022-12-13 19:05:48,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:05:48,090 INFO L225 Difference]: With dead ends: 1659 [2022-12-13 19:05:48,090 INFO L226 Difference]: Without dead ends: 1126 [2022-12-13 19:05:48,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 19:05:48,091 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 1128 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 2531 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1143 SdHoareTripleChecker+Valid, 1772 SdHoareTripleChecker+Invalid, 2586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-12-13 19:05:48,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1143 Valid, 1772 Invalid, 2586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 2531 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-12-13 19:05:48,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2022-12-13 19:05:48,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 803. [2022-12-13 19:05:48,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 726 states have (on average 1.5606060606060606) internal successors, (1133), 729 states have internal predecessors, (1133), 56 states have call successors, (56), 18 states have call predecessors, (56), 20 states have return successors, (61), 57 states have call predecessors, (61), 56 states have call successors, (61) [2022-12-13 19:05:48,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1250 transitions. [2022-12-13 19:05:48,165 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1250 transitions. Word has length 134 [2022-12-13 19:05:48,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:05:48,165 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 1250 transitions. [2022-12-13 19:05:48,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-12-13 19:05:48,165 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1250 transitions. [2022-12-13 19:05:48,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-13 19:05:48,166 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:05:48,166 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] [2022-12-13 19:05:48,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 19:05:48,166 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:05:48,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:05:48,167 INFO L85 PathProgramCache]: Analyzing trace with hash -483968389, now seen corresponding path program 1 times [2022-12-13 19:05:48,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:05:48,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941716097] [2022-12-13 19:05:48,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:05:48,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:05:48,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:48,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 19:05:48,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:48,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 19:05:48,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:48,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:05:48,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:48,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 19:05:48,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:48,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 19:05:48,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:48,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:05:48,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:05:48,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941716097] [2022-12-13 19:05:48,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941716097] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:05:48,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:05:48,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 19:05:48,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40895457] [2022-12-13 19:05:48,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:05:48,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:05:48,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:05:48,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:05:48,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:05:48,304 INFO L87 Difference]: Start difference. First operand 803 states and 1250 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-12-13 19:05:50,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:05:50,151 INFO L93 Difference]: Finished difference Result 2620 states and 4154 transitions. [2022-12-13 19:05:50,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 19:05:50,151 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2022-12-13 19:05:50,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:05:50,156 INFO L225 Difference]: With dead ends: 2620 [2022-12-13 19:05:50,156 INFO L226 Difference]: Without dead ends: 1834 [2022-12-13 19:05:50,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 19:05:50,158 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 1122 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 2510 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1137 SdHoareTripleChecker+Valid, 1770 SdHoareTripleChecker+Invalid, 2567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-13 19:05:50,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1137 Valid, 1770 Invalid, 2567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2510 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-12-13 19:05:50,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1834 states. [2022-12-13 19:05:50,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1834 to 1313. [2022-12-13 19:05:50,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1313 states, 1188 states have (on average 1.5555555555555556) internal successors, (1848), 1193 states have internal predecessors, (1848), 90 states have call successors, (90), 30 states have call predecessors, (90), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2022-12-13 19:05:50,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1313 states to 1313 states and 2041 transitions. [2022-12-13 19:05:50,267 INFO L78 Accepts]: Start accepts. Automaton has 1313 states and 2041 transitions. Word has length 134 [2022-12-13 19:05:50,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:05:50,267 INFO L495 AbstractCegarLoop]: Abstraction has 1313 states and 2041 transitions. [2022-12-13 19:05:50,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-12-13 19:05:50,267 INFO L276 IsEmpty]: Start isEmpty. Operand 1313 states and 2041 transitions. [2022-12-13 19:05:50,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-13 19:05:50,268 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:05:50,269 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] [2022-12-13 19:05:50,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 19:05:50,269 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:05:50,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:05:50,269 INFO L85 PathProgramCache]: Analyzing trace with hash -12612039, now seen corresponding path program 1 times [2022-12-13 19:05:50,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:05:50,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647866504] [2022-12-13 19:05:50,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:05:50,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:05:50,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:50,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 19:05:50,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:50,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 19:05:50,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:50,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:05:50,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:50,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 19:05:50,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:50,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 19:05:50,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:50,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:05:50,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:05:50,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647866504] [2022-12-13 19:05:50,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647866504] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:05:50,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:05:50,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 19:05:50,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249374746] [2022-12-13 19:05:50,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:05:50,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:05:50,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:05:50,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:05:50,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:05:50,405 INFO L87 Difference]: Start difference. First operand 1313 states and 2041 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-12-13 19:05:52,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:05:52,706 INFO L93 Difference]: Finished difference Result 4476 states and 7069 transitions. [2022-12-13 19:05:52,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 19:05:52,706 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2022-12-13 19:05:52,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:05:52,713 INFO L225 Difference]: With dead ends: 4476 [2022-12-13 19:05:52,713 INFO L226 Difference]: Without dead ends: 3180 [2022-12-13 19:05:52,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 19:05:52,715 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 1121 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 2497 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1136 SdHoareTripleChecker+Valid, 1770 SdHoareTripleChecker+Invalid, 2554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-12-13 19:05:52,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1136 Valid, 1770 Invalid, 2554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2497 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-12-13 19:05:52,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3180 states. [2022-12-13 19:05:52,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3180 to 2334. [2022-12-13 19:05:52,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2334 states, 2113 states have (on average 1.551348793185045) internal successors, (3278), 2122 states have internal predecessors, (3278), 158 states have call successors, (158), 54 states have call predecessors, (158), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2022-12-13 19:05:52,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2334 states to 2334 states and 3629 transitions. [2022-12-13 19:05:52,919 INFO L78 Accepts]: Start accepts. Automaton has 2334 states and 3629 transitions. Word has length 134 [2022-12-13 19:05:52,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:05:52,919 INFO L495 AbstractCegarLoop]: Abstraction has 2334 states and 3629 transitions. [2022-12-13 19:05:52,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-12-13 19:05:52,920 INFO L276 IsEmpty]: Start isEmpty. Operand 2334 states and 3629 transitions. [2022-12-13 19:05:52,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-13 19:05:52,921 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:05:52,921 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] [2022-12-13 19:05:52,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 19:05:52,921 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:05:52,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:05:52,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1659974981, now seen corresponding path program 1 times [2022-12-13 19:05:52,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:05:52,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813200827] [2022-12-13 19:05:52,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:05:52,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:05:52,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:52,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 19:05:52,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:52,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 19:05:52,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:53,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:05:53,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:53,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 19:05:53,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:53,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 19:05:53,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:53,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:05:53,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:05:53,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813200827] [2022-12-13 19:05:53,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813200827] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:05:53,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:05:53,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 19:05:53,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076880030] [2022-12-13 19:05:53,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:05:53,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:05:53,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:05:53,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:05:53,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:05:53,036 INFO L87 Difference]: Start difference. First operand 2334 states and 3629 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-12-13 19:05:54,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:05:54,605 INFO L93 Difference]: Finished difference Result 5512 states and 8710 transitions. [2022-12-13 19:05:54,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 19:05:54,606 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2022-12-13 19:05:54,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:05:54,612 INFO L225 Difference]: With dead ends: 5512 [2022-12-13 19:05:54,612 INFO L226 Difference]: Without dead ends: 3195 [2022-12-13 19:05:54,615 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 [2022-12-13 19:05:54,616 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 862 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 1199 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 1257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:05:54,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [878 Valid, 897 Invalid, 1257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1199 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 19:05:54,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3195 states. [2022-12-13 19:05:54,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3195 to 2334. [2022-12-13 19:05:54,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2334 states, 2113 states have (on average 1.547089446284903) internal successors, (3269), 2122 states have internal predecessors, (3269), 158 states have call successors, (158), 54 states have call predecessors, (158), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2022-12-13 19:05:54,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2334 states to 2334 states and 3620 transitions. [2022-12-13 19:05:54,834 INFO L78 Accepts]: Start accepts. Automaton has 2334 states and 3620 transitions. Word has length 134 [2022-12-13 19:05:54,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:05:54,834 INFO L495 AbstractCegarLoop]: Abstraction has 2334 states and 3620 transitions. [2022-12-13 19:05:54,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-12-13 19:05:54,834 INFO L276 IsEmpty]: Start isEmpty. Operand 2334 states and 3620 transitions. [2022-12-13 19:05:54,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-13 19:05:54,836 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:05:54,836 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] [2022-12-13 19:05:54,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 19:05:54,836 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:05:54,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:05:54,837 INFO L85 PathProgramCache]: Analyzing trace with hash 503641593, now seen corresponding path program 1 times [2022-12-13 19:05:54,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:05:54,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186965358] [2022-12-13 19:05:54,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:05:54,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:05:54,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:54,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 19:05:54,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:54,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 19:05:54,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:54,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:05:54,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:54,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 19:05:54,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:55,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 19:05:55,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:55,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:05:55,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:05:55,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186965358] [2022-12-13 19:05:55,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186965358] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:05:55,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:05:55,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 19:05:55,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221938809] [2022-12-13 19:05:55,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:05:55,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:05:55,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:05:55,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:05:55,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:05:55,005 INFO L87 Difference]: Start difference. First operand 2334 states and 3620 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-12-13 19:05:56,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:05:56,355 INFO L93 Difference]: Finished difference Result 5502 states and 8663 transitions. [2022-12-13 19:05:56,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 19:05:56,355 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2022-12-13 19:05:56,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:05:56,362 INFO L225 Difference]: With dead ends: 5502 [2022-12-13 19:05:56,362 INFO L226 Difference]: Without dead ends: 3185 [2022-12-13 19:05:56,365 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 [2022-12-13 19:05:56,365 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 810 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 1262 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 1319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 19:05:56,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 898 Invalid, 1319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1262 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 19:05:56,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3185 states. [2022-12-13 19:05:56,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3185 to 2334. [2022-12-13 19:05:56,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2334 states, 2113 states have (on average 1.542830099384761) internal successors, (3260), 2122 states have internal predecessors, (3260), 158 states have call successors, (158), 54 states have call predecessors, (158), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2022-12-13 19:05:56,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2334 states to 2334 states and 3611 transitions. [2022-12-13 19:05:56,616 INFO L78 Accepts]: Start accepts. Automaton has 2334 states and 3611 transitions. Word has length 134 [2022-12-13 19:05:56,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:05:56,616 INFO L495 AbstractCegarLoop]: Abstraction has 2334 states and 3611 transitions. [2022-12-13 19:05:56,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-12-13 19:05:56,616 INFO L276 IsEmpty]: Start isEmpty. Operand 2334 states and 3611 transitions. [2022-12-13 19:05:56,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-13 19:05:56,618 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:05:56,618 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] [2022-12-13 19:05:56,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 19:05:56,618 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:05:56,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:05:56,618 INFO L85 PathProgramCache]: Analyzing trace with hash -534942981, now seen corresponding path program 1 times [2022-12-13 19:05:56,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:05:56,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062073654] [2022-12-13 19:05:56,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:05:56,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:05:56,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:56,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 19:05:56,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:56,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 19:05:56,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:56,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:05:56,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:56,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 19:05:56,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:56,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 19:05:56,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:56,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:05:56,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:05:56,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062073654] [2022-12-13 19:05:56,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062073654] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:05:56,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:05:56,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 19:05:56,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763410268] [2022-12-13 19:05:56,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:05:56,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:05:56,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:05:56,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:05:56,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:05:56,740 INFO L87 Difference]: Start difference. First operand 2334 states and 3611 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-12-13 19:05:57,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:05:57,987 INFO L93 Difference]: Finished difference Result 5492 states and 8616 transitions. [2022-12-13 19:05:57,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 19:05:57,987 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2022-12-13 19:05:57,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:05:57,995 INFO L225 Difference]: With dead ends: 5492 [2022-12-13 19:05:57,995 INFO L226 Difference]: Without dead ends: 3175 [2022-12-13 19:05:57,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-12-13 19:05:57,998 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 926 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 1130 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 942 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 1209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 19:05:57,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [942 Valid, 755 Invalid, 1209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1130 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 19:05:58,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3175 states. [2022-12-13 19:05:58,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3175 to 2334. [2022-12-13 19:05:58,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2334 states, 2113 states have (on average 1.538570752484619) internal successors, (3251), 2122 states have internal predecessors, (3251), 158 states have call successors, (158), 54 states have call predecessors, (158), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2022-12-13 19:05:58,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2334 states to 2334 states and 3602 transitions. [2022-12-13 19:05:58,266 INFO L78 Accepts]: Start accepts. Automaton has 2334 states and 3602 transitions. Word has length 134 [2022-12-13 19:05:58,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:05:58,266 INFO L495 AbstractCegarLoop]: Abstraction has 2334 states and 3602 transitions. [2022-12-13 19:05:58,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-12-13 19:05:58,266 INFO L276 IsEmpty]: Start isEmpty. Operand 2334 states and 3602 transitions. [2022-12-13 19:05:58,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-13 19:05:58,268 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:05:58,268 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] [2022-12-13 19:05:58,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 19:05:58,268 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:05:58,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:05:58,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1786858937, now seen corresponding path program 1 times [2022-12-13 19:05:58,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:05:58,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074394936] [2022-12-13 19:05:58,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:05:58,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:05:58,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:58,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 19:05:58,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:58,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 19:05:58,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:58,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:05:58,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:58,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 19:05:58,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:58,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 19:05:58,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:58,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:05:58,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:05:58,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074394936] [2022-12-13 19:05:58,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074394936] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:05:58,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:05:58,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 19:05:58,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748917260] [2022-12-13 19:05:58,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:05:58,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:05:58,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:05:58,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:05:58,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:05:58,391 INFO L87 Difference]: Start difference. First operand 2334 states and 3602 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-12-13 19:06:01,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:06:01,360 INFO L93 Difference]: Finished difference Result 8157 states and 12723 transitions. [2022-12-13 19:06:01,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 19:06:01,360 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2022-12-13 19:06:01,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:06:01,374 INFO L225 Difference]: With dead ends: 8157 [2022-12-13 19:06:01,374 INFO L226 Difference]: Without dead ends: 5840 [2022-12-13 19:06:01,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 19:06:01,378 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 1099 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 2409 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1114 SdHoareTripleChecker+Valid, 1770 SdHoareTripleChecker+Invalid, 2466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-12-13 19:06:01,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1114 Valid, 1770 Invalid, 2466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2409 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-12-13 19:06:01,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5840 states. [2022-12-13 19:06:01,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5840 to 4410. [2022-12-13 19:06:01,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4410 states, 3997 states have (on average 1.532899674756067) internal successors, (6127), 4014 states have internal predecessors, (6127), 294 states have call successors, (294), 102 states have call predecessors, (294), 118 states have return successors, (391), 309 states have call predecessors, (391), 294 states have call successors, (391) [2022-12-13 19:06:01,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4410 states to 4410 states and 6812 transitions. [2022-12-13 19:06:01,896 INFO L78 Accepts]: Start accepts. Automaton has 4410 states and 6812 transitions. Word has length 134 [2022-12-13 19:06:01,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:06:01,896 INFO L495 AbstractCegarLoop]: Abstraction has 4410 states and 6812 transitions. [2022-12-13 19:06:01,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-12-13 19:06:01,896 INFO L276 IsEmpty]: Start isEmpty. Operand 4410 states and 6812 transitions. [2022-12-13 19:06:01,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-13 19:06:01,898 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:06:01,898 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] [2022-12-13 19:06:01,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 19:06:01,898 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:06:01,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:06:01,898 INFO L85 PathProgramCache]: Analyzing trace with hash -355001541, now seen corresponding path program 1 times [2022-12-13 19:06:01,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:06:01,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591353954] [2022-12-13 19:06:01,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:06:01,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:06:01,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:06:01,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 19:06:01,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:06:01,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 19:06:01,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:06:02,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:06:02,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:06:02,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 19:06:02,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:06:02,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 19:06:02,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:06:02,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:06:02,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:06:02,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591353954] [2022-12-13 19:06:02,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591353954] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:06:02,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:06:02,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 19:06:02,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493325062] [2022-12-13 19:06:02,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:06:02,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:06:02,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:06:02,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:06:02,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:06:02,023 INFO L87 Difference]: Start difference. First operand 4410 states and 6812 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-12-13 19:06:06,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:06:06,053 INFO L93 Difference]: Finished difference Result 17519 states and 27285 transitions. [2022-12-13 19:06:06,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 19:06:06,054 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2022-12-13 19:06:06,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:06:06,082 INFO L225 Difference]: With dead ends: 17519 [2022-12-13 19:06:06,082 INFO L226 Difference]: Without dead ends: 13126 [2022-12-13 19:06:06,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 19:06:06,091 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 1434 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 2384 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1458 SdHoareTripleChecker+Valid, 1760 SdHoareTripleChecker+Invalid, 2446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-13 19:06:06,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1458 Valid, 1760 Invalid, 2446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 2384 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-13 19:06:06,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13126 states. [2022-12-13 19:06:07,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13126 to 8523. [2022-12-13 19:06:07,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8523 states, 7742 states have (on average 1.5315164040299665) internal successors, (11857), 7775 states have internal predecessors, (11857), 550 states have call successors, (550), 198 states have call predecessors, (550), 230 states have return successors, (825), 581 states have call predecessors, (825), 550 states have call successors, (825) [2022-12-13 19:06:07,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8523 states to 8523 states and 13232 transitions. [2022-12-13 19:06:07,121 INFO L78 Accepts]: Start accepts. Automaton has 8523 states and 13232 transitions. Word has length 134 [2022-12-13 19:06:07,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:06:07,121 INFO L495 AbstractCegarLoop]: Abstraction has 8523 states and 13232 transitions. [2022-12-13 19:06:07,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-12-13 19:06:07,122 INFO L276 IsEmpty]: Start isEmpty. Operand 8523 states and 13232 transitions. [2022-12-13 19:06:07,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-13 19:06:07,125 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:06:07,125 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] [2022-12-13 19:06:07,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 19:06:07,125 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:06:07,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:06:07,125 INFO L85 PathProgramCache]: Analyzing trace with hash -978283143, now seen corresponding path program 1 times [2022-12-13 19:06:07,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:06:07,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992283337] [2022-12-13 19:06:07,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:06:07,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:06:07,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:06:07,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 19:06:07,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:06:07,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 19:06:07,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:06:07,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:06:07,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:06:07,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 19:06:07,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:06:07,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 19:06:07,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:06:07,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:06:07,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:06:07,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992283337] [2022-12-13 19:06:07,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992283337] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:06:07,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:06:07,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 19:06:07,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776707460] [2022-12-13 19:06:07,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:06:07,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:06:07,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:06:07,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:06:07,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:06:07,250 INFO L87 Difference]: Start difference. First operand 8523 states and 13232 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-12-13 19:06:13,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:06:13,699 INFO L93 Difference]: Finished difference Result 33324 states and 52167 transitions. [2022-12-13 19:06:13,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 19:06:13,699 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2022-12-13 19:06:13,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:06:13,747 INFO L225 Difference]: With dead ends: 33324 [2022-12-13 19:06:13,747 INFO L226 Difference]: Without dead ends: 24818 [2022-12-13 19:06:13,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 19:06:13,764 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 1162 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 2799 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1176 SdHoareTripleChecker+Valid, 1760 SdHoareTripleChecker+Invalid, 2858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:06:13,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1176 Valid, 1760 Invalid, 2858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2799 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-12-13 19:06:13,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24818 states. [2022-12-13 19:06:15,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24818 to 16765. [2022-12-13 19:06:15,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16765 states, 15264 states have (on average 1.532822327044025) internal successors, (23397), 15329 states have internal predecessors, (23397), 1046 states have call successors, (1046), 390 states have call predecessors, (1046), 454 states have return successors, (1839), 1109 states have call predecessors, (1839), 1046 states have call successors, (1839) [2022-12-13 19:06:15,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16765 states to 16765 states and 26282 transitions. [2022-12-13 19:06:15,926 INFO L78 Accepts]: Start accepts. Automaton has 16765 states and 26282 transitions. Word has length 134 [2022-12-13 19:06:15,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:06:15,926 INFO L495 AbstractCegarLoop]: Abstraction has 16765 states and 26282 transitions. [2022-12-13 19:06:15,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-12-13 19:06:15,926 INFO L276 IsEmpty]: Start isEmpty. Operand 16765 states and 26282 transitions. [2022-12-13 19:06:15,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-13 19:06:15,931 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:06:15,931 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] [2022-12-13 19:06:15,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 19:06:15,931 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:06:15,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:06:15,932 INFO L85 PathProgramCache]: Analyzing trace with hash 411010871, now seen corresponding path program 1 times [2022-12-13 19:06:15,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:06:15,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913230193] [2022-12-13 19:06:15,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:06:15,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:06:15,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:06:15,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 19:06:15,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:06:15,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 19:06:15,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:06:16,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:06:16,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:06:16,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 19:06:16,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:06:16,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 19:06:16,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:06:16,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:06:16,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:06:16,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913230193] [2022-12-13 19:06:16,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913230193] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:06:16,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:06:16,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 19:06:16,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198783202] [2022-12-13 19:06:16,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:06:16,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:06:16,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:06:16,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:06:16,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:06:16,055 INFO L87 Difference]: Start difference. First operand 16765 states and 26282 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-12-13 19:06:26,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:06:26,067 INFO L93 Difference]: Finished difference Result 64764 states and 102287 transitions. [2022-12-13 19:06:26,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 19:06:26,068 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2022-12-13 19:06:26,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:06:26,180 INFO L225 Difference]: With dead ends: 64764 [2022-12-13 19:06:26,181 INFO L226 Difference]: Without dead ends: 48016 [2022-12-13 19:06:26,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 19:06:26,234 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 1311 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 2344 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1335 SdHoareTripleChecker+Valid, 1760 SdHoareTripleChecker+Invalid, 2406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-12-13 19:06:26,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1335 Valid, 1760 Invalid, 2406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 2344 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-12-13 19:06:26,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48016 states. [2022-12-13 19:06:30,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48016 to 33214. [2022-12-13 19:06:30,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33214 states, 30305 states have (on average 1.5344992575482594) internal successors, (46503), 30434 states have internal predecessors, (46503), 2006 states have call successors, (2006), 774 states have call predecessors, (2006), 902 states have return successors, (4321), 2133 states have call predecessors, (4321), 2006 states have call successors, (4321) [2022-12-13 19:06:30,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33214 states to 33214 states and 52830 transitions. [2022-12-13 19:06:30,727 INFO L78 Accepts]: Start accepts. Automaton has 33214 states and 52830 transitions. Word has length 134 [2022-12-13 19:06:30,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:06:30,727 INFO L495 AbstractCegarLoop]: Abstraction has 33214 states and 52830 transitions. [2022-12-13 19:06:30,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-12-13 19:06:30,727 INFO L276 IsEmpty]: Start isEmpty. Operand 33214 states and 52830 transitions. [2022-12-13 19:06:30,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-13 19:06:30,737 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:06:30,737 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] [2022-12-13 19:06:30,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 19:06:30,737 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:06:30,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:06:30,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1622383175, now seen corresponding path program 1 times [2022-12-13 19:06:30,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:06:30,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539031800] [2022-12-13 19:06:30,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:06:30,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:06:30,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:06:30,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 19:06:30,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:06:30,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 19:06:30,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:06:30,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:06:30,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:06:30,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 19:06:30,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:06:30,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 19:06:30,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:06:30,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:06:30,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:06:30,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539031800] [2022-12-13 19:06:30,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539031800] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:06:30,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:06:30,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 19:06:30,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136690091] [2022-12-13 19:06:30,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:06:30,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:06:30,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:06:30,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:06:30,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:06:30,855 INFO L87 Difference]: Start difference. First operand 33214 states and 52830 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-12-13 19:06:54,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:06:54,168 INFO L93 Difference]: Finished difference Result 126459 states and 202581 transitions. [2022-12-13 19:06:54,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 19:06:54,169 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2022-12-13 19:06:54,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:06:54,449 INFO L225 Difference]: With dead ends: 126459 [2022-12-13 19:06:54,449 INFO L226 Difference]: Without dead ends: 93262 [2022-12-13 19:06:54,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 19:06:54,512 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 1198 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 2459 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1212 SdHoareTripleChecker+Valid, 1172 SdHoareTripleChecker+Invalid, 2542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-12-13 19:06:54,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1212 Valid, 1172 Invalid, 2542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 2459 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-12-13 19:06:54,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93262 states. [2022-12-13 19:07:03,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93262 to 66047. [2022-12-13 19:07:03,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66047 states, 60386 states have (on average 1.5363991653694564) internal successors, (92777), 60643 states have internal predecessors, (92777), 3862 states have call successors, (3862), 1542 states have call predecessors, (3862), 1798 states have return successors, (10679), 4117 states have call predecessors, (10679), 3862 states have call successors, (10679) [2022-12-13 19:07:04,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66047 states to 66047 states and 107318 transitions. [2022-12-13 19:07:04,133 INFO L78 Accepts]: Start accepts. Automaton has 66047 states and 107318 transitions. Word has length 134 [2022-12-13 19:07:04,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:07:04,133 INFO L495 AbstractCegarLoop]: Abstraction has 66047 states and 107318 transitions. [2022-12-13 19:07:04,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-12-13 19:07:04,134 INFO L276 IsEmpty]: Start isEmpty. Operand 66047 states and 107318 transitions. [2022-12-13 19:07:04,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-13 19:07:04,154 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:07:04,154 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] [2022-12-13 19:07:04,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 19:07:04,154 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:07:04,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:07:04,155 INFO L85 PathProgramCache]: Analyzing trace with hash 805875447, now seen corresponding path program 1 times [2022-12-13 19:07:04,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:07:04,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617387897] [2022-12-13 19:07:04,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:07:04,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:07:04,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:04,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 19:07:04,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:04,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 19:07:04,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:04,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:07:04,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:04,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 19:07:04,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:04,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 19:07:04,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:04,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:07:04,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:07:04,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617387897] [2022-12-13 19:07:04,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617387897] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:07:04,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:07:04,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 19:07:04,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932522305] [2022-12-13 19:07:04,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:07:04,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:07:04,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:07:04,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:07:04,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:07:04,258 INFO L87 Difference]: Start difference. First operand 66047 states and 107318 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-12-13 19:07:37,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:07:37,872 INFO L93 Difference]: Finished difference Result 247482 states and 405227 transitions. [2022-12-13 19:07:37,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 19:07:37,873 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2022-12-13 19:07:37,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:07:38,437 INFO L225 Difference]: With dead ends: 247482 [2022-12-13 19:07:38,437 INFO L226 Difference]: Without dead ends: 181452 [2022-12-13 19:07:38,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 19:07:38,618 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 1231 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 2318 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1255 SdHoareTripleChecker+Valid, 1760 SdHoareTripleChecker+Invalid, 2380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-12-13 19:07:38,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1255 Valid, 1760 Invalid, 2380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 2318 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-12-13 19:07:38,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181452 states. [2022-12-13 19:07:57,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181452 to 131584. [2022-12-13 19:07:57,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131584 states, 120547 states have (on average 1.5384124034608908) internal successors, (185451), 121060 states have internal predecessors, (185451), 7446 states have call successors, (7446), 3078 states have call predecessors, (7446), 3590 states have return successors, (27641), 7957 states have call predecessors, (27641), 7446 states have call successors, (27641) [2022-12-13 19:07:58,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131584 states to 131584 states and 220538 transitions. [2022-12-13 19:07:58,052 INFO L78 Accepts]: Start accepts. Automaton has 131584 states and 220538 transitions. Word has length 134 [2022-12-13 19:07:58,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:07:58,052 INFO L495 AbstractCegarLoop]: Abstraction has 131584 states and 220538 transitions. [2022-12-13 19:07:58,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-12-13 19:07:58,052 INFO L276 IsEmpty]: Start isEmpty. Operand 131584 states and 220538 transitions. [2022-12-13 19:07:58,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-13 19:07:58,096 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:07:58,096 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:07:58,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-13 19:07:58,097 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:07:58,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:07:58,097 INFO L85 PathProgramCache]: Analyzing trace with hash -501266951, now seen corresponding path program 1 times [2022-12-13 19:07:58,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:07:58,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069963698] [2022-12-13 19:07:58,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:07:58,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:07:58,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:58,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 19:07:58,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:58,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 19:07:58,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:58,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:07:58,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:58,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 19:07:58,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:58,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 19:07:58,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:58,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:07:58,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:07:58,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069963698] [2022-12-13 19:07:58,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069963698] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:07:58,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:07:58,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 19:07:58,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040847340] [2022-12-13 19:07:58,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:07:58,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:07:58,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:07:58,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:07:58,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:07:58,293 INFO L87 Difference]: Start difference. First operand 131584 states and 220538 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-12-13 19:09:08,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:09:08,459 INFO L93 Difference]: Finished difference Result 484793 states and 820465 transitions. [2022-12-13 19:09:08,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 19:09:08,460 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2022-12-13 19:09:08,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:09:09,814 INFO L225 Difference]: With dead ends: 484793 [2022-12-13 19:09:09,814 INFO L226 Difference]: Without dead ends: 353226 [2022-12-13 19:09:10,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 19:09:10,159 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 1118 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 2543 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 1760 SdHoareTripleChecker+Invalid, 2602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-13 19:09:10,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1132 Valid, 1760 Invalid, 2602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2543 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-13 19:09:10,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353226 states. [2022-12-13 19:09:47,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353226 to 262401. [2022-12-13 19:09:47,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262401 states, 240868 states have (on average 1.540482754039557) internal successors, (371053), 241893 states have internal predecessors, (371053), 14358 states have call successors, (14358), 6150 states have call predecessors, (14358), 7174 states have return successors, (74431), 15381 states have call predecessors, (74431), 14358 states have call successors, (74431) [2022-12-13 19:09:48,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262401 states to 262401 states and 459842 transitions. [2022-12-13 19:09:48,533 INFO L78 Accepts]: Start accepts. Automaton has 262401 states and 459842 transitions. Word has length 134 [2022-12-13 19:09:48,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:09:48,534 INFO L495 AbstractCegarLoop]: Abstraction has 262401 states and 459842 transitions. [2022-12-13 19:09:48,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-12-13 19:09:48,534 INFO L276 IsEmpty]: Start isEmpty. Operand 262401 states and 459842 transitions. [2022-12-13 19:09:48,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-13 19:09:48,626 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:09:48,626 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] [2022-12-13 19:09:48,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 19:09:48,627 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:09:48,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:09:48,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1396229815, now seen corresponding path program 1 times [2022-12-13 19:09:48,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:09:48,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333767128] [2022-12-13 19:09:48,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:09:48,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:09:48,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:09:48,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 19:09:48,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:09:48,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 19:09:48,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:09:48,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:09:48,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:09:48,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 19:09:48,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:09:48,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 19:09:48,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:09:48,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:09:48,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:09:48,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333767128] [2022-12-13 19:09:48,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333767128] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:09:48,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:09:48,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 19:09:48,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794848044] [2022-12-13 19:09:48,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:09:48,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:09:48,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:09:48,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:09:48,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:09:48,754 INFO L87 Difference]: Start difference. First operand 262401 states and 459842 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-12-13 19:12:01,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:12:01,244 INFO L93 Difference]: Finished difference Result 949944 states and 1688327 transitions. [2022-12-13 19:12:01,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 19:12:01,244 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2022-12-13 19:12:01,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:12:04,076 INFO L225 Difference]: With dead ends: 949944 [2022-12-13 19:12:04,076 INFO L226 Difference]: Without dead ends: 687560 [2022-12-13 19:12:05,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 19:12:05,044 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 1151 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 2292 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1175 SdHoareTripleChecker+Valid, 1760 SdHoareTripleChecker+Invalid, 2354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:12:05,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1175 Valid, 1760 Invalid, 2354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 2292 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-12-13 19:12:05,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687560 states. [2022-12-13 19:13:24,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687560 to 523522. [2022-12-13 19:13:25,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523522 states, 481509 states have (on average 1.5425817585964126) internal successors, (742767), 483558 states have internal predecessors, (742767), 27670 states have call successors, (27670), 12294 states have call predecessors, (27670), 14342 states have return successors, (206865), 29717 states have call predecessors, (206865), 27670 states have call successors, (206865) [2022-12-13 19:13:27,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523522 states to 523522 states and 977302 transitions. [2022-12-13 19:13:27,879 INFO L78 Accepts]: Start accepts. Automaton has 523522 states and 977302 transitions. Word has length 134 [2022-12-13 19:13:27,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:13:27,879 INFO L495 AbstractCegarLoop]: Abstraction has 523522 states and 977302 transitions. [2022-12-13 19:13:27,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-12-13 19:13:27,880 INFO L276 IsEmpty]: Start isEmpty. Operand 523522 states and 977302 transitions. [2022-12-13 19:13:28,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-13 19:13:28,152 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:13:28,152 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] [2022-12-13 19:13:28,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-13 19:13:28,153 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:13:28,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:13:28,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1867696583, now seen corresponding path program 1 times [2022-12-13 19:13:28,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:13:28,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694669935] [2022-12-13 19:13:28,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:13:28,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:13:28,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:13:28,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 19:13:28,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:13:28,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 19:13:28,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:13:28,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:13:28,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:13:28,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 19:13:28,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:13:28,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 19:13:28,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:13:28,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:13:28,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:13:28,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694669935] [2022-12-13 19:13:28,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694669935] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:13:28,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:13:28,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 19:13:28,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563265099] [2022-12-13 19:13:28,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:13:28,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:13:28,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:13:28,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:13:28,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:13:28,273 INFO L87 Difference]: Start difference. First operand 523522 states and 977302 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-12-13 19:15:35,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:15:35,721 INFO L93 Difference]: Finished difference Result 1182368 states and 2333741 transitions. [2022-12-13 19:15:35,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 19:15:35,722 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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 134 [2022-12-13 19:15:35,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:15:38,707 INFO L225 Difference]: With dead ends: 1182368 [2022-12-13 19:15:38,708 INFO L226 Difference]: Without dead ends: 658863 [2022-12-13 19:15:40,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-12-13 19:15:40,330 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 813 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 1196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:15:40,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 896 Invalid, 1196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-13 19:15:40,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658863 states. [2022-12-13 19:17:06,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658863 to 523522. [2022-12-13 19:17:06,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523522 states, 481509 states have (on average 1.5383263864226837) internal successors, (740718), 483558 states have internal predecessors, (740718), 27670 states have call successors, (27670), 12294 states have call predecessors, (27670), 14342 states have return successors, (206865), 29717 states have call predecessors, (206865), 27670 states have call successors, (206865) [2022-12-13 19:17:09,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523522 states to 523522 states and 975253 transitions. [2022-12-13 19:17:09,613 INFO L78 Accepts]: Start accepts. Automaton has 523522 states and 975253 transitions. Word has length 134 [2022-12-13 19:17:09,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:17:09,613 INFO L495 AbstractCegarLoop]: Abstraction has 523522 states and 975253 transitions. [2022-12-13 19:17:09,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 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) [2022-12-13 19:17:09,614 INFO L276 IsEmpty]: Start isEmpty. Operand 523522 states and 975253 transitions. [2022-12-13 19:17:09,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-13 19:17:09,806 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:17:09,806 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] [2022-12-13 19:17:09,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-13 19:17:09,806 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:17:09,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:17:09,806 INFO L85 PathProgramCache]: Analyzing trace with hash 520867447, now seen corresponding path program 1 times [2022-12-13 19:17:09,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:17:09,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480740096] [2022-12-13 19:17:09,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:17:09,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:17:09,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:17:09,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 19:17:09,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:17:09,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 19:17:09,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:17:09,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 19:17:09,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:17:09,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 19:17:09,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:17:09,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 19:17:09,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:17:09,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:17:09,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:17:09,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480740096] [2022-12-13 19:17:09,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480740096] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:17:09,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:17:09,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 19:17:09,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273138667] [2022-12-13 19:17:09,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:17:09,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:17:09,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:17:09,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:17:09,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:17:09,912 INFO L87 Difference]: Start difference. First operand 523522 states and 975253 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 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)