./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label07.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_9085cb67-5f53-4234-9a94-0dbd2f02c822/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9085cb67-5f53-4234-9a94-0dbd2f02c822/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9085cb67-5f53-4234-9a94-0dbd2f02c822/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9085cb67-5f53-4234-9a94-0dbd2f02c822/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label07.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9085cb67-5f53-4234-9a94-0dbd2f02c822/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9085cb67-5f53-4234-9a94-0dbd2f02c822/bin/uautomizer-Dbtcem3rbc --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 c07e007f9f3a362ec25382ccff24a1aeded702728f7c63228a63ffce5d34476e --- 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-5e519f3 [2022-11-02 20:41:23,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:41:23,440 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:41:23,494 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:41:23,495 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:41:23,501 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:41:23,504 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:41:23,509 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:41:23,512 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:41:23,518 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:41:23,519 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:41:23,523 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:41:23,523 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:41:23,527 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:41:23,530 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:41:23,532 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:41:23,534 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:41:23,535 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:41:23,537 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:41:23,548 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:41:23,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:41:23,552 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:41:23,556 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:41:23,557 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:41:23,567 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:41:23,568 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:41:23,569 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:41:23,571 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:41:23,572 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:41:23,575 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:41:23,576 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:41:23,577 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:41:23,580 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:41:23,581 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:41:23,583 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:41:23,583 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:41:23,584 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:41:23,584 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:41:23,585 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:41:23,586 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:41:23,587 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:41:23,588 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9085cb67-5f53-4234-9a94-0dbd2f02c822/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:41:23,645 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:41:23,645 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:41:23,646 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:41:23,647 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:41:23,648 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:41:23,649 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:41:23,649 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:41:23,650 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:41:23,650 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:41:23,650 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:41:23,652 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:41:23,652 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:41:23,652 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:41:23,653 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:41:23,653 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:41:23,653 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:41:23,654 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:41:23,654 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:41:23,654 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:41:23,654 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:41:23,655 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:41:23,655 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:41:23,655 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:41:23,655 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:41:23,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:41:23,656 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:41:23,656 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:41:23,657 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:41:23,657 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:41:23,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:41:23,657 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:41:23,658 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:41:23,658 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:41:23,659 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9085cb67-5f53-4234-9a94-0dbd2f02c822/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9085cb67-5f53-4234-9a94-0dbd2f02c822/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c07e007f9f3a362ec25382ccff24a1aeded702728f7c63228a63ffce5d34476e [2022-11-02 20:41:24,072 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:41:24,115 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:41:24,120 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:41:24,122 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:41:24,123 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:41:24,124 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9085cb67-5f53-4234-9a94-0dbd2f02c822/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label07.c [2022-11-02 20:41:24,208 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9085cb67-5f53-4234-9a94-0dbd2f02c822/bin/uautomizer-Dbtcem3rbc/data/5d78c2a99/dd97667563524f968c3e9a8aafb1a0eb/FLAGaa08b1d97 [2022-11-02 20:41:25,206 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:41:25,207 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9085cb67-5f53-4234-9a94-0dbd2f02c822/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label07.c [2022-11-02 20:41:25,243 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9085cb67-5f53-4234-9a94-0dbd2f02c822/bin/uautomizer-Dbtcem3rbc/data/5d78c2a99/dd97667563524f968c3e9a8aafb1a0eb/FLAGaa08b1d97 [2022-11-02 20:41:25,616 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9085cb67-5f53-4234-9a94-0dbd2f02c822/bin/uautomizer-Dbtcem3rbc/data/5d78c2a99/dd97667563524f968c3e9a8aafb1a0eb [2022-11-02 20:41:25,620 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:41:25,621 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:41:25,625 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:41:25,625 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:41:25,630 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:41:25,631 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:41:25" (1/1) ... [2022-11-02 20:41:25,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@760a2fc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:25, skipping insertion in model container [2022-11-02 20:41:25,633 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:41:25" (1/1) ... [2022-11-02 20:41:25,642 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:41:25,818 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:41:26,370 WARN L230 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_9085cb67-5f53-4234-9a94-0dbd2f02c822/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label07.c[11640,11653] [2022-11-02 20:41:26,412 WARN L230 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_9085cb67-5f53-4234-9a94-0dbd2f02c822/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label07.c[12482,12495] [2022-11-02 20:41:27,848 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:41:27,872 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:41:27,928 WARN L230 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_9085cb67-5f53-4234-9a94-0dbd2f02c822/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label07.c[11640,11653] [2022-11-02 20:41:27,947 WARN L230 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_9085cb67-5f53-4234-9a94-0dbd2f02c822/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label07.c[12482,12495] [2022-11-02 20:41:28,756 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:41:28,793 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:41:28,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:28 WrapperNode [2022-11-02 20:41:28,794 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:41:28,796 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:41:28,796 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:41:28,796 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:41:28,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:28" (1/1) ... [2022-11-02 20:41:28,888 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:28" (1/1) ... [2022-11-02 20:41:29,450 INFO L138 Inliner]: procedures = 36, calls = 22, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 5090 [2022-11-02 20:41:29,452 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:41:29,453 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:41:29,453 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:41:29,454 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:41:29,465 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:28" (1/1) ... [2022-11-02 20:41:29,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:28" (1/1) ... [2022-11-02 20:41:29,544 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:28" (1/1) ... [2022-11-02 20:41:29,545 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:28" (1/1) ... [2022-11-02 20:41:29,889 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:28" (1/1) ... [2022-11-02 20:41:29,937 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:28" (1/1) ... [2022-11-02 20:41:29,957 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:28" (1/1) ... [2022-11-02 20:41:29,990 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:28" (1/1) ... [2022-11-02 20:41:30,089 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:41:30,090 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:41:30,091 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:41:30,091 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:41:30,095 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:28" (1/1) ... [2022-11-02 20:41:30,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:41:30,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9085cb67-5f53-4234-9a94-0dbd2f02c822/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:41:30,197 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9085cb67-5f53-4234-9a94-0dbd2f02c822/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:41:30,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9085cb67-5f53-4234-9a94-0dbd2f02c822/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:41:30,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:41:30,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:41:30,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:41:30,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:41:30,502 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:41:30,504 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:41:36,914 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:41:36,943 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:41:36,944 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-02 20:41:36,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:41:36 BoogieIcfgContainer [2022-11-02 20:41:36,949 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:41:36,953 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:41:36,953 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:41:36,957 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:41:36,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:41:25" (1/3) ... [2022-11-02 20:41:36,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@137a356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:41:36, skipping insertion in model container [2022-11-02 20:41:36,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:28" (2/3) ... [2022-11-02 20:41:36,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@137a356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:41:36, skipping insertion in model container [2022-11-02 20:41:36,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:41:36" (3/3) ... [2022-11-02 20:41:36,961 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label07.c [2022-11-02 20:41:36,988 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:41:36,989 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-02 20:41:37,100 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:41:37,108 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;@b47cf3a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:41:37,108 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-02 20:41:37,125 INFO L276 IsEmpty]: Start isEmpty. Operand has 909 states, 906 states have (on average 1.900662251655629) internal successors, (1722), 908 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:37,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-02 20:41:37,139 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:37,139 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:41:37,141 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:41:37,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:37,151 INFO L85 PathProgramCache]: Analyzing trace with hash -2089036915, now seen corresponding path program 1 times [2022-11-02 20:41:37,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:37,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418597755] [2022-11-02 20:41:37,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:37,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:37,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:37,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:37,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:37,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418597755] [2022-11-02 20:41:37,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418597755] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:37,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:37,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:41:37,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657350531] [2022-11-02 20:41:37,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:37,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:41:37,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:37,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:41:37,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:41:37,585 INFO L87 Difference]: Start difference. First operand has 909 states, 906 states have (on average 1.900662251655629) internal successors, (1722), 908 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:43,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:43,302 INFO L93 Difference]: Finished difference Result 2536 states and 4876 transitions. [2022-11-02 20:41:43,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:41:43,306 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-02 20:41:43,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:43,334 INFO L225 Difference]: With dead ends: 2536 [2022-11-02 20:41:43,334 INFO L226 Difference]: Without dead ends: 1594 [2022-11-02 20:41:43,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:41:43,346 INFO L413 NwaCegarLoop]: 625 mSDtfsCounter, 981 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2334 mSolverCounterSat, 651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 981 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 2985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 2334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:43,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [981 Valid, 636 Invalid, 2985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [651 Valid, 2334 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-11-02 20:41:43,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1594 states. [2022-11-02 20:41:43,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1594 to 1594. [2022-11-02 20:41:43,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1594 states, 1592 states have (on average 1.64321608040201) internal successors, (2616), 1593 states have internal predecessors, (2616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:43,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1594 states to 1594 states and 2616 transitions. [2022-11-02 20:41:43,465 INFO L78 Accepts]: Start accepts. Automaton has 1594 states and 2616 transitions. Word has length 7 [2022-11-02 20:41:43,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:43,466 INFO L495 AbstractCegarLoop]: Abstraction has 1594 states and 2616 transitions. [2022-11-02 20:41:43,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:43,466 INFO L276 IsEmpty]: Start isEmpty. Operand 1594 states and 2616 transitions. [2022-11-02 20:41:43,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-02 20:41:43,468 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:43,468 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] [2022-11-02 20:41:43,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:41:43,469 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:41:43,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:43,470 INFO L85 PathProgramCache]: Analyzing trace with hash -950839655, now seen corresponding path program 1 times [2022-11-02 20:41:43,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:43,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068240297] [2022-11-02 20:41:43,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:43,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:43,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:43,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:43,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:43,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068240297] [2022-11-02 20:41:43,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068240297] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:43,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:43,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:41:43,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897994352] [2022-11-02 20:41:43,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:43,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:41:43,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:43,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:41:43,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:41:43,758 INFO L87 Difference]: Start difference. First operand 1594 states and 2616 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:43,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:43,856 INFO L93 Difference]: Finished difference Result 1650 states and 2702 transitions. [2022-11-02 20:41:43,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:41:43,857 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-11-02 20:41:43,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:43,865 INFO L225 Difference]: With dead ends: 1650 [2022-11-02 20:41:43,865 INFO L226 Difference]: Without dead ends: 1594 [2022-11-02 20:41:43,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:41:43,872 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 3 mSDsluCounter, 4727 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6314 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:43,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6314 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:41:43,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1594 states. [2022-11-02 20:41:43,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1594 to 1594. [2022-11-02 20:41:43,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1594 states, 1592 states have (on average 1.6237437185929648) internal successors, (2585), 1593 states have internal predecessors, (2585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:43,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1594 states to 1594 states and 2585 transitions. [2022-11-02 20:41:43,929 INFO L78 Accepts]: Start accepts. Automaton has 1594 states and 2585 transitions. Word has length 34 [2022-11-02 20:41:43,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:43,929 INFO L495 AbstractCegarLoop]: Abstraction has 1594 states and 2585 transitions. [2022-11-02 20:41:43,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:43,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1594 states and 2585 transitions. [2022-11-02 20:41:43,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-02 20:41:43,942 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:43,942 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] [2022-11-02 20:41:43,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:41:43,943 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:41:43,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:43,950 INFO L85 PathProgramCache]: Analyzing trace with hash -695028240, now seen corresponding path program 1 times [2022-11-02 20:41:43,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:43,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001713086] [2022-11-02 20:41:43,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:43,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:43,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:44,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:44,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:44,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001713086] [2022-11-02 20:41:44,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001713086] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:44,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:44,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:41:44,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579454385] [2022-11-02 20:41:44,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:44,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:41:44,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:44,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:41:44,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:41:44,076 INFO L87 Difference]: Start difference. First operand 1594 states and 2585 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:44,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:44,126 INFO L93 Difference]: Finished difference Result 1692 states and 2739 transitions. [2022-11-02 20:41:44,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:41:44,127 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-11-02 20:41:44,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:44,136 INFO L225 Difference]: With dead ends: 1692 [2022-11-02 20:41:44,137 INFO L226 Difference]: Without dead ends: 1640 [2022-11-02 20:41:44,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:41:44,150 INFO L413 NwaCegarLoop]: 1626 mSDtfsCounter, 1511 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1511 SdHoareTripleChecker+Valid, 1706 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:44,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1511 Valid, 1706 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:41:44,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2022-11-02 20:41:44,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1638. [2022-11-02 20:41:44,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1638 states, 1636 states have (on average 1.6228606356968216) internal successors, (2655), 1637 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:44,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1638 states to 1638 states and 2655 transitions. [2022-11-02 20:41:44,206 INFO L78 Accepts]: Start accepts. Automaton has 1638 states and 2655 transitions. Word has length 64 [2022-11-02 20:41:44,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:44,206 INFO L495 AbstractCegarLoop]: Abstraction has 1638 states and 2655 transitions. [2022-11-02 20:41:44,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:44,207 INFO L276 IsEmpty]: Start isEmpty. Operand 1638 states and 2655 transitions. [2022-11-02 20:41:44,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-02 20:41:44,212 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:44,213 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] [2022-11-02 20:41:44,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:41:44,213 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:41:44,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:44,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1440610970, now seen corresponding path program 1 times [2022-11-02 20:41:44,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:44,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323901287] [2022-11-02 20:41:44,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:44,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:44,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:44,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:44,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:44,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323901287] [2022-11-02 20:41:44,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323901287] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:44,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:44,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:41:44,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047533905] [2022-11-02 20:41:44,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:44,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:41:44,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:44,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:41:44,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:41:44,382 INFO L87 Difference]: Start difference. First operand 1638 states and 2655 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:44,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:44,437 INFO L93 Difference]: Finished difference Result 1818 states and 2939 transitions. [2022-11-02 20:41:44,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:41:44,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-11-02 20:41:44,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:44,446 INFO L225 Difference]: With dead ends: 1818 [2022-11-02 20:41:44,447 INFO L226 Difference]: Without dead ends: 1722 [2022-11-02 20:41:44,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:41:44,460 INFO L413 NwaCegarLoop]: 1621 mSDtfsCounter, 1507 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 1705 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:44,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1507 Valid, 1705 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:41:44,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2022-11-02 20:41:44,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1720. [2022-11-02 20:41:44,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1720 states, 1718 states have (on average 1.620488940628638) internal successors, (2784), 1719 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:44,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1720 states to 1720 states and 2784 transitions. [2022-11-02 20:41:44,519 INFO L78 Accepts]: Start accepts. Automaton has 1720 states and 2784 transitions. Word has length 64 [2022-11-02 20:41:44,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:44,522 INFO L495 AbstractCegarLoop]: Abstraction has 1720 states and 2784 transitions. [2022-11-02 20:41:44,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:44,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 2784 transitions. [2022-11-02 20:41:44,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-02 20:41:44,524 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:44,524 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] [2022-11-02 20:41:44,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:41:44,525 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:41:44,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:44,527 INFO L85 PathProgramCache]: Analyzing trace with hash 914325468, now seen corresponding path program 1 times [2022-11-02 20:41:44,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:44,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062227310] [2022-11-02 20:41:44,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:44,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:44,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:44,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:44,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:44,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062227310] [2022-11-02 20:41:44,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062227310] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:44,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:44,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:41:44,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4992217] [2022-11-02 20:41:44,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:44,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:41:44,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:44,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:41:44,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:41:44,636 INFO L87 Difference]: Start difference. First operand 1720 states and 2784 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:44,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:44,696 INFO L93 Difference]: Finished difference Result 2052 states and 3306 transitions. [2022-11-02 20:41:44,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:41:44,696 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-11-02 20:41:44,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:44,707 INFO L225 Difference]: With dead ends: 2052 [2022-11-02 20:41:44,707 INFO L226 Difference]: Without dead ends: 1874 [2022-11-02 20:41:44,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:41:44,709 INFO L413 NwaCegarLoop]: 1616 mSDtfsCounter, 1503 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1503 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:44,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1503 Valid, 1704 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:41:44,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1874 states. [2022-11-02 20:41:44,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1874 to 1872. [2022-11-02 20:41:44,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1872 states, 1870 states have (on average 1.6149732620320856) internal successors, (3020), 1871 states have internal predecessors, (3020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:44,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1872 states to 1872 states and 3020 transitions. [2022-11-02 20:41:44,781 INFO L78 Accepts]: Start accepts. Automaton has 1872 states and 3020 transitions. Word has length 64 [2022-11-02 20:41:44,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:44,786 INFO L495 AbstractCegarLoop]: Abstraction has 1872 states and 3020 transitions. [2022-11-02 20:41:44,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:44,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1872 states and 3020 transitions. [2022-11-02 20:41:44,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-02 20:41:44,789 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:44,790 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] [2022-11-02 20:41:44,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:41:44,790 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:41:44,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:44,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1701027568, now seen corresponding path program 1 times [2022-11-02 20:41:44,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:44,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970773428] [2022-11-02 20:41:44,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:44,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:44,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:44,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:44,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:44,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970773428] [2022-11-02 20:41:44,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970773428] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:44,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:44,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:41:44,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977953466] [2022-11-02 20:41:44,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:44,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:41:44,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:44,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:41:44,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:41:44,890 INFO L87 Difference]: Start difference. First operand 1872 states and 3020 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:44,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:44,980 INFO L93 Difference]: Finished difference Result 2484 states and 3974 transitions. [2022-11-02 20:41:44,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:41:44,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-11-02 20:41:44,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:44,990 INFO L225 Difference]: With dead ends: 2484 [2022-11-02 20:41:44,990 INFO L226 Difference]: Without dead ends: 2154 [2022-11-02 20:41:44,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:41:44,993 INFO L413 NwaCegarLoop]: 1611 mSDtfsCounter, 1499 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1499 SdHoareTripleChecker+Valid, 1703 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:44,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1499 Valid, 1703 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:41:44,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2154 states. [2022-11-02 20:41:45,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2154 to 2152. [2022-11-02 20:41:45,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2152 states, 2150 states have (on average 1.6037209302325581) internal successors, (3448), 2151 states have internal predecessors, (3448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:45,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2152 states to 2152 states and 3448 transitions. [2022-11-02 20:41:45,079 INFO L78 Accepts]: Start accepts. Automaton has 2152 states and 3448 transitions. Word has length 64 [2022-11-02 20:41:45,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:45,080 INFO L495 AbstractCegarLoop]: Abstraction has 2152 states and 3448 transitions. [2022-11-02 20:41:45,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:45,080 INFO L276 IsEmpty]: Start isEmpty. Operand 2152 states and 3448 transitions. [2022-11-02 20:41:45,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-02 20:41:45,081 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:45,081 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] [2022-11-02 20:41:45,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:41:45,082 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:41:45,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:45,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1105068988, now seen corresponding path program 1 times [2022-11-02 20:41:45,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:45,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565118287] [2022-11-02 20:41:45,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:45,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:45,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:45,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:45,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:45,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565118287] [2022-11-02 20:41:45,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565118287] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:45,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:45,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:41:45,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612459921] [2022-11-02 20:41:45,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:45,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:41:45,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:45,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:41:45,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:41:45,239 INFO L87 Difference]: Start difference. First operand 2152 states and 3448 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:45,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:45,384 INFO L93 Difference]: Finished difference Result 3276 states and 5178 transitions. [2022-11-02 20:41:45,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:41:45,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-11-02 20:41:45,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:45,399 INFO L225 Difference]: With dead ends: 3276 [2022-11-02 20:41:45,399 INFO L226 Difference]: Without dead ends: 2666 [2022-11-02 20:41:45,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:41:45,403 INFO L413 NwaCegarLoop]: 1606 mSDtfsCounter, 1495 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1495 SdHoareTripleChecker+Valid, 1702 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:45,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1495 Valid, 1702 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:41:45,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2666 states. [2022-11-02 20:41:45,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2666 to 2664. [2022-11-02 20:41:45,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2664 states, 2662 states have (on average 1.583771600300526) internal successors, (4216), 2663 states have internal predecessors, (4216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:45,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2664 states to 2664 states and 4216 transitions. [2022-11-02 20:41:45,568 INFO L78 Accepts]: Start accepts. Automaton has 2664 states and 4216 transitions. Word has length 64 [2022-11-02 20:41:45,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:45,568 INFO L495 AbstractCegarLoop]: Abstraction has 2664 states and 4216 transitions. [2022-11-02 20:41:45,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:45,569 INFO L276 IsEmpty]: Start isEmpty. Operand 2664 states and 4216 transitions. [2022-11-02 20:41:45,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-02 20:41:45,570 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:45,570 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] [2022-11-02 20:41:45,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:41:45,571 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:41:45,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:45,571 INFO L85 PathProgramCache]: Analyzing trace with hash 112916410, now seen corresponding path program 1 times [2022-11-02 20:41:45,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:45,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094159477] [2022-11-02 20:41:45,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:45,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:45,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:45,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:45,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:45,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094159477] [2022-11-02 20:41:45,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094159477] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:45,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:45,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:41:45,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012488633] [2022-11-02 20:41:45,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:45,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:41:45,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:45,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:41:45,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:41:45,822 INFO L87 Difference]: Start difference. First operand 2664 states and 4216 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:47,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:47,071 INFO L93 Difference]: Finished difference Result 13884 states and 21346 transitions. [2022-11-02 20:41:47,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:41:47,072 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-11-02 20:41:47,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:47,153 INFO L225 Difference]: With dead ends: 13884 [2022-11-02 20:41:47,153 INFO L226 Difference]: Without dead ends: 12762 [2022-11-02 20:41:47,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:41:47,160 INFO L413 NwaCegarLoop]: 1552 mSDtfsCounter, 8512 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8512 SdHoareTripleChecker+Valid, 2392 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:47,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8512 Valid, 2392 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:41:47,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12762 states. [2022-11-02 20:41:47,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12762 to 3784. [2022-11-02 20:41:47,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3784 states, 3782 states have (on average 1.550502379693284) internal successors, (5864), 3783 states have internal predecessors, (5864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:47,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3784 states to 3784 states and 5864 transitions. [2022-11-02 20:41:47,592 INFO L78 Accepts]: Start accepts. Automaton has 3784 states and 5864 transitions. Word has length 64 [2022-11-02 20:41:47,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:47,593 INFO L495 AbstractCegarLoop]: Abstraction has 3784 states and 5864 transitions. [2022-11-02 20:41:47,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:47,593 INFO L276 IsEmpty]: Start isEmpty. Operand 3784 states and 5864 transitions. [2022-11-02 20:41:47,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-02 20:41:47,594 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:47,594 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:41:47,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:41:47,595 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:41:47,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:47,595 INFO L85 PathProgramCache]: Analyzing trace with hash -277208054, now seen corresponding path program 1 times [2022-11-02 20:41:47,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:47,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989829376] [2022-11-02 20:41:47,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:47,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:47,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:47,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:47,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:47,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989829376] [2022-11-02 20:41:47,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989829376] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:47,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:47,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:41:47,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480830715] [2022-11-02 20:41:47,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:47,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:41:47,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:47,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:41:47,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:41:47,690 INFO L87 Difference]: Start difference. First operand 3784 states and 5864 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:48,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:48,167 INFO L93 Difference]: Finished difference Result 7070 states and 10780 transitions. [2022-11-02 20:41:48,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:41:48,168 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-02 20:41:48,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:48,182 INFO L225 Difference]: With dead ends: 7070 [2022-11-02 20:41:48,183 INFO L226 Difference]: Without dead ends: 4828 [2022-11-02 20:41:48,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:41:48,188 INFO L413 NwaCegarLoop]: 1588 mSDtfsCounter, 1487 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1487 SdHoareTripleChecker+Valid, 1665 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:48,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1487 Valid, 1665 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:41:48,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4828 states. [2022-11-02 20:41:48,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4828 to 4826. [2022-11-02 20:41:48,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4826 states, 4824 states have (on average 1.5277777777777777) internal successors, (7370), 4825 states have internal predecessors, (7370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:48,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4826 states to 4826 states and 7370 transitions. [2022-11-02 20:41:48,657 INFO L78 Accepts]: Start accepts. Automaton has 4826 states and 7370 transitions. Word has length 66 [2022-11-02 20:41:48,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:48,658 INFO L495 AbstractCegarLoop]: Abstraction has 4826 states and 7370 transitions. [2022-11-02 20:41:48,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:48,658 INFO L276 IsEmpty]: Start isEmpty. Operand 4826 states and 7370 transitions. [2022-11-02 20:41:48,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-02 20:41:48,666 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:48,666 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:41:48,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:41:48,667 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:41:48,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:48,668 INFO L85 PathProgramCache]: Analyzing trace with hash -210714542, now seen corresponding path program 1 times [2022-11-02 20:41:48,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:48,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685114545] [2022-11-02 20:41:48,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:48,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:48,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:49,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:49,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:49,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685114545] [2022-11-02 20:41:49,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685114545] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:49,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:49,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:41:49,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236817998] [2022-11-02 20:41:49,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:49,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:41:49,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:49,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:41:49,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:41:49,106 INFO L87 Difference]: Start difference. First operand 4826 states and 7370 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:49,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:49,727 INFO L93 Difference]: Finished difference Result 8110 states and 12236 transitions. [2022-11-02 20:41:49,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:41:49,728 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-02 20:41:49,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:49,740 INFO L225 Difference]: With dead ends: 8110 [2022-11-02 20:41:49,740 INFO L226 Difference]: Without dead ends: 4828 [2022-11-02 20:41:49,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:41:49,747 INFO L413 NwaCegarLoop]: 1551 mSDtfsCounter, 6144 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6144 SdHoareTripleChecker+Valid, 1867 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:49,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6144 Valid, 1867 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:41:49,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4828 states. [2022-11-02 20:41:50,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4828 to 4826. [2022-11-02 20:41:50,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4826 states, 4824 states have (on average 1.5178275290215588) internal successors, (7322), 4825 states have internal predecessors, (7322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:50,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4826 states to 4826 states and 7322 transitions. [2022-11-02 20:41:50,306 INFO L78 Accepts]: Start accepts. Automaton has 4826 states and 7322 transitions. Word has length 66 [2022-11-02 20:41:50,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:50,306 INFO L495 AbstractCegarLoop]: Abstraction has 4826 states and 7322 transitions. [2022-11-02 20:41:50,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:50,307 INFO L276 IsEmpty]: Start isEmpty. Operand 4826 states and 7322 transitions. [2022-11-02 20:41:50,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-02 20:41:50,308 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:50,308 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] [2022-11-02 20:41:50,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:41:50,309 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:41:50,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:50,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1643060746, now seen corresponding path program 1 times [2022-11-02 20:41:50,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:50,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220495847] [2022-11-02 20:41:50,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:50,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:50,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:50,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:50,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:50,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220495847] [2022-11-02 20:41:50,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220495847] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:50,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:50,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:41:50,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018857450] [2022-11-02 20:41:50,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:50,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:41:50,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:50,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:41:50,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:41:50,464 INFO L87 Difference]: Start difference. First operand 4826 states and 7322 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:51,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:51,273 INFO L93 Difference]: Finished difference Result 8108 states and 12139 transitions. [2022-11-02 20:41:51,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:41:51,274 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-11-02 20:41:51,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:51,285 INFO L225 Difference]: With dead ends: 8108 [2022-11-02 20:41:51,285 INFO L226 Difference]: Without dead ends: 4826 [2022-11-02 20:41:51,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:41:51,291 INFO L413 NwaCegarLoop]: 1519 mSDtfsCounter, 4627 mSDsluCounter, 1503 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4627 SdHoareTripleChecker+Valid, 3022 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:51,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4627 Valid, 3022 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:41:51,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4826 states. [2022-11-02 20:41:51,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4826 to 4826. [2022-11-02 20:41:51,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4826 states, 4824 states have (on average 1.50787728026534) internal successors, (7274), 4825 states have internal predecessors, (7274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:51,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4826 states to 4826 states and 7274 transitions. [2022-11-02 20:41:51,863 INFO L78 Accepts]: Start accepts. Automaton has 4826 states and 7274 transitions. Word has length 67 [2022-11-02 20:41:51,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:51,864 INFO L495 AbstractCegarLoop]: Abstraction has 4826 states and 7274 transitions. [2022-11-02 20:41:51,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:51,864 INFO L276 IsEmpty]: Start isEmpty. Operand 4826 states and 7274 transitions. [2022-11-02 20:41:51,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-02 20:41:51,865 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:51,865 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] [2022-11-02 20:41:51,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 20:41:51,866 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:41:51,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:51,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1372042872, now seen corresponding path program 1 times [2022-11-02 20:41:51,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:51,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787573908] [2022-11-02 20:41:51,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:51,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:51,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:52,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:52,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:52,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787573908] [2022-11-02 20:41:52,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787573908] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:52,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:52,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:41:52,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065339115] [2022-11-02 20:41:52,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:52,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:41:52,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:52,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:41:52,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:41:52,004 INFO L87 Difference]: Start difference. First operand 4826 states and 7274 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:52,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:52,630 INFO L93 Difference]: Finished difference Result 8108 states and 12043 transitions. [2022-11-02 20:41:52,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:41:52,631 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-11-02 20:41:52,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:52,642 INFO L225 Difference]: With dead ends: 8108 [2022-11-02 20:41:52,642 INFO L226 Difference]: Without dead ends: 4826 [2022-11-02 20:41:52,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:41:52,649 INFO L413 NwaCegarLoop]: 1521 mSDtfsCounter, 4660 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4660 SdHoareTripleChecker+Valid, 3023 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:52,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4660 Valid, 3023 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:41:52,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4826 states. [2022-11-02 20:41:53,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4826 to 4826. [2022-11-02 20:41:53,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4826 states, 4824 states have (on average 1.497927031509121) internal successors, (7226), 4825 states have internal predecessors, (7226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:53,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4826 states to 4826 states and 7226 transitions. [2022-11-02 20:41:53,212 INFO L78 Accepts]: Start accepts. Automaton has 4826 states and 7226 transitions. Word has length 67 [2022-11-02 20:41:53,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:53,213 INFO L495 AbstractCegarLoop]: Abstraction has 4826 states and 7226 transitions. [2022-11-02 20:41:53,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:53,214 INFO L276 IsEmpty]: Start isEmpty. Operand 4826 states and 7226 transitions. [2022-11-02 20:41:53,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-02 20:41:53,215 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:53,215 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] [2022-11-02 20:41:53,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 20:41:53,216 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:41:53,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:53,217 INFO L85 PathProgramCache]: Analyzing trace with hash 316900870, now seen corresponding path program 1 times [2022-11-02 20:41:53,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:53,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120720883] [2022-11-02 20:41:53,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:53,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:53,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:53,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:53,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:53,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120720883] [2022-11-02 20:41:53,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120720883] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:53,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:53,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:41:53,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605146558] [2022-11-02 20:41:53,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:53,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:41:53,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:53,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:41:53,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:41:53,486 INFO L87 Difference]: Start difference. First operand 4826 states and 7226 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:54,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:54,407 INFO L93 Difference]: Finished difference Result 7669 states and 11200 transitions. [2022-11-02 20:41:54,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:41:54,407 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-11-02 20:41:54,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:54,424 INFO L225 Difference]: With dead ends: 7669 [2022-11-02 20:41:54,425 INFO L226 Difference]: Without dead ends: 7667 [2022-11-02 20:41:54,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:41:54,428 INFO L413 NwaCegarLoop]: 1581 mSDtfsCounter, 211 mSDsluCounter, 4661 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 6242 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:54,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 6242 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:41:54,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7667 states. [2022-11-02 20:41:55,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7667 to 5018. [2022-11-02 20:41:55,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 5016 states have (on average 1.4756778309409888) internal successors, (7402), 5017 states have internal predecessors, (7402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:55,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 7402 transitions. [2022-11-02 20:41:55,040 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 7402 transitions. Word has length 67 [2022-11-02 20:41:55,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:55,041 INFO L495 AbstractCegarLoop]: Abstraction has 5018 states and 7402 transitions. [2022-11-02 20:41:55,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:55,041 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 7402 transitions. [2022-11-02 20:41:55,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-02 20:41:55,042 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:55,043 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:41:55,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 20:41:55,043 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:41:55,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:55,044 INFO L85 PathProgramCache]: Analyzing trace with hash 2081134109, now seen corresponding path program 1 times [2022-11-02 20:41:55,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:55,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959371551] [2022-11-02 20:41:55,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:55,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:55,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:55,137 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:55,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:55,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959371551] [2022-11-02 20:41:55,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959371551] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:55,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:55,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:41:55,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285704551] [2022-11-02 20:41:55,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:55,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:41:55,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:55,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:41:55,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:41:55,140 INFO L87 Difference]: Start difference. First operand 5018 states and 7402 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:00,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:42:00,723 INFO L93 Difference]: Finished difference Result 8024 states and 12329 transitions. [2022-11-02 20:42:00,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:42:00,724 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-11-02 20:42:00,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:42:00,740 INFO L225 Difference]: With dead ends: 8024 [2022-11-02 20:42:00,740 INFO L226 Difference]: Without dead ends: 6520 [2022-11-02 20:42:00,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:42:00,745 INFO L413 NwaCegarLoop]: 1266 mSDtfsCounter, 762 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 2412 mSolverCounterSat, 681 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 762 SdHoareTripleChecker+Valid, 1391 SdHoareTripleChecker+Invalid, 3093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 681 IncrementalHoareTripleChecker+Valid, 2412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:42:00,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [762 Valid, 1391 Invalid, 3093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [681 Valid, 2412 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-02 20:42:00,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6520 states. [2022-11-02 20:42:01,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6520 to 6520. [2022-11-02 20:42:01,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6520 states, 6518 states have (on average 1.4664007364222154) internal successors, (9558), 6519 states have internal predecessors, (9558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:01,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6520 states to 6520 states and 9558 transitions. [2022-11-02 20:42:01,349 INFO L78 Accepts]: Start accepts. Automaton has 6520 states and 9558 transitions. Word has length 78 [2022-11-02 20:42:01,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:42:01,350 INFO L495 AbstractCegarLoop]: Abstraction has 6520 states and 9558 transitions. [2022-11-02 20:42:01,350 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:01,350 INFO L276 IsEmpty]: Start isEmpty. Operand 6520 states and 9558 transitions. [2022-11-02 20:42:01,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-02 20:42:01,352 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:42:01,352 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:01,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 20:42:01,352 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:42:01,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:01,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1968929968, now seen corresponding path program 1 times [2022-11-02 20:42:01,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:01,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081440323] [2022-11-02 20:42:01,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:01,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:01,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:01,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:01,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:01,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081440323] [2022-11-02 20:42:01,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081440323] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:01,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:01,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:42:01,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225340926] [2022-11-02 20:42:01,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:01,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:42:01,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:01,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:42:01,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:42:01,459 INFO L87 Difference]: Start difference. First operand 6520 states and 9558 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:06,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:42:06,552 INFO L93 Difference]: Finished difference Result 11028 states and 16641 transitions. [2022-11-02 20:42:06,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:42:06,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-11-02 20:42:06,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:42:06,569 INFO L225 Difference]: With dead ends: 11028 [2022-11-02 20:42:06,569 INFO L226 Difference]: Without dead ends: 8022 [2022-11-02 20:42:06,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:42:06,573 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 841 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2305 mSolverCounterSat, 962 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 3267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 962 IncrementalHoareTripleChecker+Valid, 2305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:42:06,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 272 Invalid, 3267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [962 Valid, 2305 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-02 20:42:06,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8022 states. [2022-11-02 20:42:07,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8022 to 8022. [2022-11-02 20:42:07,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8022 states, 8020 states have (on average 1.488279301745636) internal successors, (11936), 8021 states have internal predecessors, (11936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:07,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8022 states to 8022 states and 11936 transitions. [2022-11-02 20:42:07,065 INFO L78 Accepts]: Start accepts. Automaton has 8022 states and 11936 transitions. Word has length 81 [2022-11-02 20:42:07,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:42:07,065 INFO L495 AbstractCegarLoop]: Abstraction has 8022 states and 11936 transitions. [2022-11-02 20:42:07,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:07,066 INFO L276 IsEmpty]: Start isEmpty. Operand 8022 states and 11936 transitions. [2022-11-02 20:42:07,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-02 20:42:07,067 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:42:07,068 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:07,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-02 20:42:07,068 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:42:07,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:07,069 INFO L85 PathProgramCache]: Analyzing trace with hash -124879277, now seen corresponding path program 1 times [2022-11-02 20:42:07,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:07,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899743702] [2022-11-02 20:42:07,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:07,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:07,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:07,159 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:07,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:07,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899743702] [2022-11-02 20:42:07,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899743702] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:07,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:07,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:42:07,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994353966] [2022-11-02 20:42:07,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:07,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:42:07,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:07,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:42:07,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:42:07,163 INFO L87 Difference]: Start difference. First operand 8022 states and 11936 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:11,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:42:11,470 INFO L93 Difference]: Finished difference Result 17036 states and 25931 transitions. [2022-11-02 20:42:11,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:42:11,476 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-11-02 20:42:11,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:42:11,505 INFO L225 Difference]: With dead ends: 17036 [2022-11-02 20:42:11,505 INFO L226 Difference]: Without dead ends: 12528 [2022-11-02 20:42:11,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:42:11,513 INFO L413 NwaCegarLoop]: 558 mSDtfsCounter, 890 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1995 mSolverCounterSat, 935 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 2930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 935 IncrementalHoareTripleChecker+Valid, 1995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:42:11,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [890 Valid, 564 Invalid, 2930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [935 Valid, 1995 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-02 20:42:11,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12528 states. [2022-11-02 20:42:12,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12528 to 12528. [2022-11-02 20:42:12,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12528 states, 12526 states have (on average 1.3912661663739423) internal successors, (17427), 12527 states have internal predecessors, (17427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:12,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12528 states to 12528 states and 17427 transitions. [2022-11-02 20:42:12,302 INFO L78 Accepts]: Start accepts. Automaton has 12528 states and 17427 transitions. Word has length 82 [2022-11-02 20:42:12,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:42:12,303 INFO L495 AbstractCegarLoop]: Abstraction has 12528 states and 17427 transitions. [2022-11-02 20:42:12,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:12,303 INFO L276 IsEmpty]: Start isEmpty. Operand 12528 states and 17427 transitions. [2022-11-02 20:42:12,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-02 20:42:12,306 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:42:12,306 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:12,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-02 20:42:12,307 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:42:12,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:12,307 INFO L85 PathProgramCache]: Analyzing trace with hash -2018351964, now seen corresponding path program 1 times [2022-11-02 20:42:12,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:12,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949889949] [2022-11-02 20:42:12,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:12,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:12,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:12,434 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:12,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:12,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949889949] [2022-11-02 20:42:12,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949889949] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:12,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:12,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:42:12,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454902272] [2022-11-02 20:42:12,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:12,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:42:12,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:12,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:42:12,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:42:12,437 INFO L87 Difference]: Start difference. First operand 12528 states and 17427 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:16,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:42:16,899 INFO L93 Difference]: Finished difference Result 30556 states and 42405 transitions. [2022-11-02 20:42:16,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:42:16,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-11-02 20:42:16,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:42:16,932 INFO L225 Difference]: With dead ends: 30556 [2022-11-02 20:42:16,932 INFO L226 Difference]: Without dead ends: 21542 [2022-11-02 20:42:16,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:42:16,942 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 1026 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:42:16,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1026 Valid, 469 Invalid, 2859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-02 20:42:16,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21542 states. [2022-11-02 20:42:17,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21542 to 19287. [2022-11-02 20:42:17,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19287 states, 19285 states have (on average 1.3276639875550946) internal successors, (25604), 19286 states have internal predecessors, (25604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:17,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19287 states to 19287 states and 25604 transitions. [2022-11-02 20:42:17,676 INFO L78 Accepts]: Start accepts. Automaton has 19287 states and 25604 transitions. Word has length 88 [2022-11-02 20:42:17,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:42:17,677 INFO L495 AbstractCegarLoop]: Abstraction has 19287 states and 25604 transitions. [2022-11-02 20:42:17,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:17,677 INFO L276 IsEmpty]: Start isEmpty. Operand 19287 states and 25604 transitions. [2022-11-02 20:42:17,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-02 20:42:17,681 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:42:17,681 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:17,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-02 20:42:17,682 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:42:17,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:17,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1023837586, now seen corresponding path program 1 times [2022-11-02 20:42:17,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:17,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794812333] [2022-11-02 20:42:17,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:17,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:17,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:17,900 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:17,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:17,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794812333] [2022-11-02 20:42:17,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794812333] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:17,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:17,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:42:17,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676073295] [2022-11-02 20:42:17,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:17,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:42:17,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:17,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:42:17,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:42:17,903 INFO L87 Difference]: Start difference. First operand 19287 states and 25604 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:24,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:42:24,644 INFO L93 Difference]: Finished difference Result 35811 states and 47063 transitions. [2022-11-02 20:42:24,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:42:24,645 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2022-11-02 20:42:24,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:42:24,671 INFO L225 Difference]: With dead ends: 35811 [2022-11-02 20:42:24,671 INFO L226 Difference]: Without dead ends: 20038 [2022-11-02 20:42:24,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:42:24,690 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 2397 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 4907 mSolverCounterSat, 528 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2397 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 5435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 528 IncrementalHoareTripleChecker+Valid, 4907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:42:24,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2397 Valid, 405 Invalid, 5435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [528 Valid, 4907 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-11-02 20:42:24,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20038 states. [2022-11-02 20:42:25,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20038 to 20038. [2022-11-02 20:42:25,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20038 states, 20036 states have (on average 1.2917248951886604) internal successors, (25881), 20037 states have internal predecessors, (25881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:25,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20038 states to 20038 states and 25881 transitions. [2022-11-02 20:42:25,575 INFO L78 Accepts]: Start accepts. Automaton has 20038 states and 25881 transitions. Word has length 93 [2022-11-02 20:42:25,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:42:25,575 INFO L495 AbstractCegarLoop]: Abstraction has 20038 states and 25881 transitions. [2022-11-02 20:42:25,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:25,576 INFO L276 IsEmpty]: Start isEmpty. Operand 20038 states and 25881 transitions. [2022-11-02 20:42:25,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-02 20:42:25,578 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:42:25,579 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:25,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-02 20:42:25,579 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:42:25,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:25,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1065285143, now seen corresponding path program 1 times [2022-11-02 20:42:25,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:25,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527196316] [2022-11-02 20:42:25,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:25,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:25,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:25,763 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-02 20:42:25,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:25,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527196316] [2022-11-02 20:42:25,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527196316] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:25,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:25,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:42:25,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786071414] [2022-11-02 20:42:25,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:25,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:42:25,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:25,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:42:25,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:42:25,768 INFO L87 Difference]: Start difference. First operand 20038 states and 25881 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:28,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:42:28,567 INFO L93 Difference]: Finished difference Result 38114 states and 51311 transitions. [2022-11-02 20:42:28,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:42:28,568 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-11-02 20:42:28,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:42:28,623 INFO L225 Difference]: With dead ends: 38114 [2022-11-02 20:42:28,624 INFO L226 Difference]: Without dead ends: 34640 [2022-11-02 20:42:28,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:42:28,637 INFO L413 NwaCegarLoop]: 1626 mSDtfsCounter, 6581 mSDsluCounter, 1908 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6581 SdHoareTripleChecker+Valid, 3534 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:42:28,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6581 Valid, 3534 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:42:28,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34640 states. [2022-11-02 20:42:30,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34640 to 23510. [2022-11-02 20:42:30,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23510 states, 23508 states have (on average 1.307172026544155) internal successors, (30729), 23509 states have internal predecessors, (30729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:30,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23510 states to 23510 states and 30729 transitions. [2022-11-02 20:42:30,191 INFO L78 Accepts]: Start accepts. Automaton has 23510 states and 30729 transitions. Word has length 95 [2022-11-02 20:42:30,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:42:30,191 INFO L495 AbstractCegarLoop]: Abstraction has 23510 states and 30729 transitions. [2022-11-02 20:42:30,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:30,192 INFO L276 IsEmpty]: Start isEmpty. Operand 23510 states and 30729 transitions. [2022-11-02 20:42:30,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-02 20:42:30,196 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:42:30,197 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:30,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-02 20:42:30,197 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:42:30,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:30,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1460899337, now seen corresponding path program 1 times [2022-11-02 20:42:30,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:30,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401118925] [2022-11-02 20:42:30,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:30,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:30,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:30,393 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 20:42:30,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:30,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401118925] [2022-11-02 20:42:30,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401118925] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:30,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:30,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:42:30,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778567262] [2022-11-02 20:42:30,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:30,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:42:30,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:30,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:42:30,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:42:30,397 INFO L87 Difference]: Start difference. First operand 23510 states and 30729 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:34,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:42:34,291 INFO L93 Difference]: Finished difference Result 41586 states and 56159 transitions. [2022-11-02 20:42:34,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:42:34,292 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-11-02 20:42:34,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:42:34,334 INFO L225 Difference]: With dead ends: 41586 [2022-11-02 20:42:34,334 INFO L226 Difference]: Without dead ends: 38112 [2022-11-02 20:42:34,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:42:34,344 INFO L413 NwaCegarLoop]: 1626 mSDtfsCounter, 6480 mSDsluCounter, 1956 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6480 SdHoareTripleChecker+Valid, 3582 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:42:34,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6480 Valid, 3582 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:42:34,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38112 states. [2022-11-02 20:42:36,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38112 to 28726. [2022-11-02 20:42:36,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28726 states, 28724 states have (on average 1.3215777746831918) internal successors, (37961), 28725 states have internal predecessors, (37961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:36,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28726 states to 28726 states and 37961 transitions. [2022-11-02 20:42:36,435 INFO L78 Accepts]: Start accepts. Automaton has 28726 states and 37961 transitions. Word has length 95 [2022-11-02 20:42:36,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:42:36,436 INFO L495 AbstractCegarLoop]: Abstraction has 28726 states and 37961 transitions. [2022-11-02 20:42:36,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:36,436 INFO L276 IsEmpty]: Start isEmpty. Operand 28726 states and 37961 transitions. [2022-11-02 20:42:36,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-02 20:42:36,440 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:42:36,441 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:36,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-02 20:42:36,441 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:42:36,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:36,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1702428119, now seen corresponding path program 1 times [2022-11-02 20:42:36,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:36,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419473860] [2022-11-02 20:42:36,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:36,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:36,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:36,620 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 20:42:36,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:36,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419473860] [2022-11-02 20:42:36,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419473860] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:36,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:36,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:42:36,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642105230] [2022-11-02 20:42:36,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:36,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:42:36,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:36,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:42:36,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:42:36,625 INFO L87 Difference]: Start difference. First operand 28726 states and 37961 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:40,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:42:40,380 INFO L93 Difference]: Finished difference Result 45058 states and 61007 transitions. [2022-11-02 20:42:40,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:42:40,380 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-11-02 20:42:40,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:42:40,427 INFO L225 Difference]: With dead ends: 45058 [2022-11-02 20:42:40,427 INFO L226 Difference]: Without dead ends: 41584 [2022-11-02 20:42:40,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:42:40,438 INFO L413 NwaCegarLoop]: 1626 mSDtfsCounter, 6494 mSDsluCounter, 1984 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6494 SdHoareTripleChecker+Valid, 3610 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:42:40,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6494 Valid, 3610 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:42:40,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41584 states. [2022-11-02 20:42:43,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41584 to 32198. [2022-11-02 20:42:43,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32198 states, 32196 states have (on average 1.329637222015157) internal successors, (42809), 32197 states have internal predecessors, (42809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:43,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32198 states to 32198 states and 42809 transitions. [2022-11-02 20:42:43,078 INFO L78 Accepts]: Start accepts. Automaton has 32198 states and 42809 transitions. Word has length 95 [2022-11-02 20:42:43,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:42:43,079 INFO L495 AbstractCegarLoop]: Abstraction has 32198 states and 42809 transitions. [2022-11-02 20:42:43,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:43,079 INFO L276 IsEmpty]: Start isEmpty. Operand 32198 states and 42809 transitions. [2022-11-02 20:42:43,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-02 20:42:43,085 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:42:43,085 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:43,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-02 20:42:43,086 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:42:43,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:43,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1357080137, now seen corresponding path program 1 times [2022-11-02 20:42:43,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:43,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908243821] [2022-11-02 20:42:43,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:43,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:43,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:43,288 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 20:42:43,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:43,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908243821] [2022-11-02 20:42:43,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908243821] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:43,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:43,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:42:43,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289714651] [2022-11-02 20:42:43,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:43,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:42:43,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:43,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:42:43,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:42:43,291 INFO L87 Difference]: Start difference. First operand 32198 states and 42809 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:48,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:42:48,043 INFO L93 Difference]: Finished difference Result 48530 states and 65855 transitions. [2022-11-02 20:42:48,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:42:48,045 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-11-02 20:42:48,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:42:48,095 INFO L225 Difference]: With dead ends: 48530 [2022-11-02 20:42:48,095 INFO L226 Difference]: Without dead ends: 45056 [2022-11-02 20:42:48,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:42:48,111 INFO L413 NwaCegarLoop]: 1627 mSDtfsCounter, 6560 mSDsluCounter, 2003 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6560 SdHoareTripleChecker+Valid, 3630 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:42:48,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6560 Valid, 3630 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:42:48,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45056 states. [2022-11-02 20:42:51,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45056 to 35670. [2022-11-02 20:42:51,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35670 states, 35668 states have (on average 1.336127621397331) internal successors, (47657), 35669 states have internal predecessors, (47657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:51,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35670 states to 35670 states and 47657 transitions. [2022-11-02 20:42:51,883 INFO L78 Accepts]: Start accepts. Automaton has 35670 states and 47657 transitions. Word has length 95 [2022-11-02 20:42:51,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:42:51,884 INFO L495 AbstractCegarLoop]: Abstraction has 35670 states and 47657 transitions. [2022-11-02 20:42:51,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:51,884 INFO L276 IsEmpty]: Start isEmpty. Operand 35670 states and 47657 transitions. [2022-11-02 20:42:51,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-02 20:42:51,891 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:42:51,891 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:51,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-02 20:42:51,892 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:42:51,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:51,892 INFO L85 PathProgramCache]: Analyzing trace with hash -63915415, now seen corresponding path program 1 times [2022-11-02 20:42:51,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:51,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674340322] [2022-11-02 20:42:51,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:51,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:51,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:52,068 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:42:52,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:52,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674340322] [2022-11-02 20:42:52,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674340322] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:52,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:52,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:42:52,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009862341] [2022-11-02 20:42:52,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:52,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:42:52,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:52,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:42:52,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:42:52,071 INFO L87 Difference]: Start difference. First operand 35670 states and 47657 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:58,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:42:58,182 INFO L93 Difference]: Finished difference Result 49922 states and 67823 transitions. [2022-11-02 20:42:58,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:42:58,183 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-11-02 20:42:58,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:42:58,229 INFO L225 Difference]: With dead ends: 49922 [2022-11-02 20:42:58,229 INFO L226 Difference]: Without dead ends: 47488 [2022-11-02 20:42:58,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:42:58,237 INFO L413 NwaCegarLoop]: 1624 mSDtfsCounter, 6561 mSDsluCounter, 1919 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6561 SdHoareTripleChecker+Valid, 3543 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:42:58,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6561 Valid, 3543 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:42:58,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47488 states. [2022-11-02 20:43:02,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47488 to 38102. [2022-11-02 20:43:02,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38102 states, 38100 states have (on average 1.340708661417323) internal successors, (51081), 38101 states have internal predecessors, (51081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:02,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38102 states to 38102 states and 51081 transitions. [2022-11-02 20:43:02,493 INFO L78 Accepts]: Start accepts. Automaton has 38102 states and 51081 transitions. Word has length 95 [2022-11-02 20:43:02,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:43:02,494 INFO L495 AbstractCegarLoop]: Abstraction has 38102 states and 51081 transitions. [2022-11-02 20:43:02,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:02,494 INFO L276 IsEmpty]: Start isEmpty. Operand 38102 states and 51081 transitions. [2022-11-02 20:43:02,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-02 20:43:02,499 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:43:02,499 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:02,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-02 20:43:02,500 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:43:02,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:02,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1416628636, now seen corresponding path program 1 times [2022-11-02 20:43:02,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:02,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511960927] [2022-11-02 20:43:02,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:02,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:02,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:02,657 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:43:02,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:02,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511960927] [2022-11-02 20:43:02,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511960927] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:43:02,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481905635] [2022-11-02 20:43:02,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:02,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:43:02,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9085cb67-5f53-4234-9a94-0dbd2f02c822/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:43:02,664 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9085cb67-5f53-4234-9a94-0dbd2f02c822/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:43:02,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9085cb67-5f53-4234-9a94-0dbd2f02c822/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:43:02,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:02,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 20:43:02,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:43:03,022 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:43:03,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:43:03,375 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:43:03,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481905635] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:43:03,376 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:43:03,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 10 [2022-11-02 20:43:03,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354452724] [2022-11-02 20:43:03,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:43:03,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:43:03,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:03,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:43:03,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:43:03,378 INFO L87 Difference]: Start difference. First operand 38102 states and 51081 transitions. Second operand has 10 states, 10 states have (on average 26.7) internal successors, (267), 10 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)