./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem13_label26.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_4146cef8-f767-43fd-9e6b-5c2acd03dde4/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4146cef8-f767-43fd-9e6b-5c2acd03dde4/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4146cef8-f767-43fd-9e6b-5c2acd03dde4/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4146cef8-f767-43fd-9e6b-5c2acd03dde4/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem13_label26.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4146cef8-f767-43fd-9e6b-5c2acd03dde4/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4146cef8-f767-43fd-9e6b-5c2acd03dde4/bin/uautomizer-ZsLfNo2U6R --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 f7d9d441800fd040181450c0920264f1b228689c17b8db097e43b17ec5ad46cc --- 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-38b53e6 [2022-11-25 18:23:14,757 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:23:14,760 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:23:14,781 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:23:14,784 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:23:14,787 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:23:14,792 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:23:14,796 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:23:14,798 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:23:14,804 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:23:14,806 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:23:14,808 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:23:14,808 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:23:14,811 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:23:14,814 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:23:14,816 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:23:14,818 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:23:14,819 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:23:14,821 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:23:14,827 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:23:14,829 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:23:14,831 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:23:14,833 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:23:14,834 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:23:14,843 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:23:14,844 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:23:14,845 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:23:14,847 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:23:14,847 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:23:14,848 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:23:14,849 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:23:14,850 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:23:14,852 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:23:14,854 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:23:14,855 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:23:14,855 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:23:14,856 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:23:14,856 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:23:14,856 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:23:14,858 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:23:14,858 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:23:14,859 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4146cef8-f767-43fd-9e6b-5c2acd03dde4/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 18:23:14,898 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:23:14,901 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:23:14,901 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:23:14,902 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:23:14,903 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:23:14,903 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:23:14,904 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:23:14,904 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:23:14,904 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:23:14,904 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:23:14,906 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:23:14,906 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:23:14,906 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:23:14,906 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:23:14,907 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 18:23:14,907 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:23:14,907 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 18:23:14,907 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:23:14,908 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:23:14,908 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:23:14,908 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 18:23:14,908 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:23:14,909 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:23:14,909 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:23:14,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:23:14,909 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:23:14,909 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:23:14,910 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 18:23:14,910 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:23:14,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:23:14,910 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:23:14,911 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 18:23:14,911 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:23:14,911 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:23:14,912 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4146cef8-f767-43fd-9e6b-5c2acd03dde4/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4146cef8-f767-43fd-9e6b-5c2acd03dde4/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f7d9d441800fd040181450c0920264f1b228689c17b8db097e43b17ec5ad46cc [2022-11-25 18:23:15,157 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:23:15,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:23:15,187 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:23:15,188 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:23:15,189 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:23:15,190 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4146cef8-f767-43fd-9e6b-5c2acd03dde4/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/eca-rers2012/Problem13_label26.c [2022-11-25 18:23:18,239 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:23:18,859 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:23:18,860 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4146cef8-f767-43fd-9e6b-5c2acd03dde4/sv-benchmarks/c/eca-rers2012/Problem13_label26.c [2022-11-25 18:23:18,898 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4146cef8-f767-43fd-9e6b-5c2acd03dde4/bin/uautomizer-ZsLfNo2U6R/data/df0d4b2e5/987836f41d2f4767a5b964de367c6af4/FLAGd40f63909 [2022-11-25 18:23:18,916 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4146cef8-f767-43fd-9e6b-5c2acd03dde4/bin/uautomizer-ZsLfNo2U6R/data/df0d4b2e5/987836f41d2f4767a5b964de367c6af4 [2022-11-25 18:23:18,921 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:23:18,923 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:23:18,928 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:23:18,928 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:23:18,932 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:23:18,933 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:23:18" (1/1) ... [2022-11-25 18:23:18,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ca55108 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:18, skipping insertion in model container [2022-11-25 18:23:18,935 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:23:18" (1/1) ... [2022-11-25 18:23:18,943 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:23:19,093 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:23:19,412 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4146cef8-f767-43fd-9e6b-5c2acd03dde4/sv-benchmarks/c/eca-rers2012/Problem13_label26.c[5554,5567] [2022-11-25 18:23:20,715 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:23:20,728 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:23:20,752 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4146cef8-f767-43fd-9e6b-5c2acd03dde4/sv-benchmarks/c/eca-rers2012/Problem13_label26.c[5554,5567] [2022-11-25 18:23:21,456 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:23:21,482 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:23:21,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:21 WrapperNode [2022-11-25 18:23:21,483 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:23:21,485 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:23:21,485 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:23:21,485 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:23:21,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:21" (1/1) ... [2022-11-25 18:23:21,578 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:21" (1/1) ... [2022-11-25 18:23:22,266 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5583 [2022-11-25 18:23:22,266 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:23:22,267 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:23:22,267 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:23:22,267 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:23:22,277 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:21" (1/1) ... [2022-11-25 18:23:22,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:21" (1/1) ... [2022-11-25 18:23:22,428 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:21" (1/1) ... [2022-11-25 18:23:22,447 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:21" (1/1) ... [2022-11-25 18:23:22,726 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:21" (1/1) ... [2022-11-25 18:23:22,754 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:21" (1/1) ... [2022-11-25 18:23:22,779 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:21" (1/1) ... [2022-11-25 18:23:22,794 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:21" (1/1) ... [2022-11-25 18:23:22,859 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:23:22,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:23:22,861 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:23:22,861 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:23:22,862 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:21" (1/1) ... [2022-11-25 18:23:22,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:23:22,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4146cef8-f767-43fd-9e6b-5c2acd03dde4/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:23:22,901 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4146cef8-f767-43fd-9e6b-5c2acd03dde4/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:23:22,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4146cef8-f767-43fd-9e6b-5c2acd03dde4/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:23:22,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:23:22,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:23:22,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:23:22,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:23:23,093 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:23:23,095 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:23:29,973 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:23:29,999 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:23:29,999 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 18:23:30,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:23:30 BoogieIcfgContainer [2022-11-25 18:23:30,003 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:23:30,007 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:23:30,007 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:23:30,010 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:23:30,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:23:18" (1/3) ... [2022-11-25 18:23:30,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27c3ca85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:23:30, skipping insertion in model container [2022-11-25 18:23:30,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:21" (2/3) ... [2022-11-25 18:23:30,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27c3ca85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:23:30, skipping insertion in model container [2022-11-25 18:23:30,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:23:30" (3/3) ... [2022-11-25 18:23:30,016 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label26.c [2022-11-25 18:23:30,036 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:23:30,036 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 18:23:30,136 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:23:30,144 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;@2ef8e01b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:23:30,145 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 18:23:30,156 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 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) [2022-11-25 18:23:30,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-25 18:23:30,164 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:23:30,165 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] [2022-11-25 18:23:30,165 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:23:30,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:23:30,171 INFO L85 PathProgramCache]: Analyzing trace with hash 323974986, now seen corresponding path program 1 times [2022-11-25 18:23:30,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:23:30,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183691221] [2022-11-25 18:23:30,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:23:30,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:23:30,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:30,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:23:30,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:23:30,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183691221] [2022-11-25 18:23:30,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183691221] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:23:30,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:23:30,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:23:30,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715955838] [2022-11-25 18:23:30,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:23:30,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:23:30,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:23:30,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:23:30,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:23:30,698 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 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 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 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) [2022-11-25 18:23:36,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:23:36,837 INFO L93 Difference]: Finished difference Result 3082 states and 5689 transitions. [2022-11-25 18:23:36,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:23:36,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 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 38 [2022-11-25 18:23:36,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:23:36,873 INFO L225 Difference]: With dead ends: 3082 [2022-11-25 18:23:36,873 INFO L226 Difference]: Without dead ends: 1899 [2022-11-25 18:23:36,883 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 [2022-11-25 18:23:36,888 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 1001 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 2955 mSolverCounterSat, 599 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1001 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 3554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 599 IncrementalHoareTripleChecker+Valid, 2955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-25 18:23:36,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1001 Valid, 641 Invalid, 3554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [599 Valid, 2955 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-11-25 18:23:36,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2022-11-25 18:23:37,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1894. [2022-11-25 18:23:37,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1894 states, 1893 states have (on average 1.7374537770734284) internal successors, (3289), 1893 states have internal predecessors, (3289), 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) [2022-11-25 18:23:37,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1894 states to 1894 states and 3289 transitions. [2022-11-25 18:23:37,041 INFO L78 Accepts]: Start accepts. Automaton has 1894 states and 3289 transitions. Word has length 38 [2022-11-25 18:23:37,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:23:37,043 INFO L495 AbstractCegarLoop]: Abstraction has 1894 states and 3289 transitions. [2022-11-25 18:23:37,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 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) [2022-11-25 18:23:37,043 INFO L276 IsEmpty]: Start isEmpty. Operand 1894 states and 3289 transitions. [2022-11-25 18:23:37,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-25 18:23:37,049 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:23:37,050 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:23:37,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 18:23:37,051 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:23:37,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:23:37,051 INFO L85 PathProgramCache]: Analyzing trace with hash -2086094830, now seen corresponding path program 1 times [2022-11-25 18:23:37,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:23:37,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150351984] [2022-11-25 18:23:37,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:23:37,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:23:37,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:37,337 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:23:37,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:23:37,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150351984] [2022-11-25 18:23:37,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150351984] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:23:37,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:23:37,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:23:37,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099733214] [2022-11-25 18:23:37,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:23:37,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:23:37,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:23:37,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:23:37,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:23:37,345 INFO L87 Difference]: Start difference. First operand 1894 states and 3289 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 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) [2022-11-25 18:23:42,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:23:42,264 INFO L93 Difference]: Finished difference Result 5384 states and 9441 transitions. [2022-11-25 18:23:42,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:23:42,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 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 103 [2022-11-25 18:23:42,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:23:42,280 INFO L225 Difference]: With dead ends: 5384 [2022-11-25 18:23:42,281 INFO L226 Difference]: Without dead ends: 3492 [2022-11-25 18:23:42,287 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 [2022-11-25 18:23:42,290 INFO L413 NwaCegarLoop]: 860 mSDtfsCounter, 922 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 879 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 3189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 879 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-25 18:23:42,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 1013 Invalid, 3189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [879 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-25 18:23:42,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3492 states. [2022-11-25 18:23:42,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3492 to 3491. [2022-11-25 18:23:42,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3491 states, 3490 states have (on average 1.5383954154727795) internal successors, (5369), 3490 states have internal predecessors, (5369), 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) [2022-11-25 18:23:42,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3491 states to 3491 states and 5369 transitions. [2022-11-25 18:23:42,378 INFO L78 Accepts]: Start accepts. Automaton has 3491 states and 5369 transitions. Word has length 103 [2022-11-25 18:23:42,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:23:42,379 INFO L495 AbstractCegarLoop]: Abstraction has 3491 states and 5369 transitions. [2022-11-25 18:23:42,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 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) [2022-11-25 18:23:42,379 INFO L276 IsEmpty]: Start isEmpty. Operand 3491 states and 5369 transitions. [2022-11-25 18:23:42,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-25 18:23:42,389 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:23:42,393 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:23:42,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 18:23:42,394 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:23:42,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:23:42,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1686024781, now seen corresponding path program 1 times [2022-11-25 18:23:42,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:23:42,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645277575] [2022-11-25 18:23:42,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:23:42,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:23:42,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:42,599 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:23:42,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:23:42,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645277575] [2022-11-25 18:23:42,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645277575] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:23:42,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:23:42,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:23:42,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297561341] [2022-11-25 18:23:42,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:23:42,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:23:42,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:23:42,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:23:42,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:23:42,603 INFO L87 Difference]: Start difference. First operand 3491 states and 5369 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 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) [2022-11-25 18:23:47,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:23:47,431 INFO L93 Difference]: Finished difference Result 10169 states and 15700 transitions. [2022-11-25 18:23:47,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:23:47,440 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 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 105 [2022-11-25 18:23:47,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:23:47,468 INFO L225 Difference]: With dead ends: 10169 [2022-11-25 18:23:47,469 INFO L226 Difference]: Without dead ends: 6680 [2022-11-25 18:23:47,476 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 [2022-11-25 18:23:47,482 INFO L413 NwaCegarLoop]: 714 mSDtfsCounter, 977 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 2533 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 3308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 2533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-25 18:23:47,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 847 Invalid, 3308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 2533 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-25 18:23:47,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6680 states. [2022-11-25 18:23:47,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6680 to 6669. [2022-11-25 18:23:47,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6669 states, 6668 states have (on average 1.375224955008998) internal successors, (9170), 6668 states have internal predecessors, (9170), 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) [2022-11-25 18:23:47,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6669 states to 6669 states and 9170 transitions. [2022-11-25 18:23:47,721 INFO L78 Accepts]: Start accepts. Automaton has 6669 states and 9170 transitions. Word has length 105 [2022-11-25 18:23:47,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:23:47,721 INFO L495 AbstractCegarLoop]: Abstraction has 6669 states and 9170 transitions. [2022-11-25 18:23:47,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 2 states have internal predecessors, (105), 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) [2022-11-25 18:23:47,722 INFO L276 IsEmpty]: Start isEmpty. Operand 6669 states and 9170 transitions. [2022-11-25 18:23:47,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-11-25 18:23:47,729 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:23:47,730 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:23:47,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 18:23:47,730 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:23:47,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:23:47,732 INFO L85 PathProgramCache]: Analyzing trace with hash -949558913, now seen corresponding path program 1 times [2022-11-25 18:23:47,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:23:47,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132905438] [2022-11-25 18:23:47,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:23:47,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:23:47,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:48,301 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:23:48,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:23:48,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132905438] [2022-11-25 18:23:48,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132905438] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:23:48,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:23:48,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:23:48,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676171632] [2022-11-25 18:23:48,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:23:48,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:23:48,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:23:48,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:23:48,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:23:48,306 INFO L87 Difference]: Start difference. First operand 6669 states and 9170 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 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) [2022-11-25 18:23:52,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:23:52,378 INFO L93 Difference]: Finished difference Result 14123 states and 19185 transitions. [2022-11-25 18:23:52,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:23:52,378 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 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 149 [2022-11-25 18:23:52,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:23:52,407 INFO L225 Difference]: With dead ends: 14123 [2022-11-25 18:23:52,408 INFO L226 Difference]: Without dead ends: 7456 [2022-11-25 18:23:52,415 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 [2022-11-25 18:23:52,416 INFO L413 NwaCegarLoop]: 1086 mSDtfsCounter, 678 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2523 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 2577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-25 18:23:52,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1215 Invalid, 2577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 2523 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-25 18:23:52,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7456 states. [2022-11-25 18:23:52,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7456 to 7456. [2022-11-25 18:23:52,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7456 states, 7455 states have (on average 1.3362843729040912) internal successors, (9962), 7455 states have internal predecessors, (9962), 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) [2022-11-25 18:23:52,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7456 states to 7456 states and 9962 transitions. [2022-11-25 18:23:52,556 INFO L78 Accepts]: Start accepts. Automaton has 7456 states and 9962 transitions. Word has length 149 [2022-11-25 18:23:52,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:23:52,558 INFO L495 AbstractCegarLoop]: Abstraction has 7456 states and 9962 transitions. [2022-11-25 18:23:52,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 2 states have internal predecessors, (149), 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) [2022-11-25 18:23:52,559 INFO L276 IsEmpty]: Start isEmpty. Operand 7456 states and 9962 transitions. [2022-11-25 18:23:52,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-11-25 18:23:52,562 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:23:52,562 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:23:52,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 18:23:52,563 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:23:52,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:23:52,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1872251179, now seen corresponding path program 1 times [2022-11-25 18:23:52,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:23:52,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216123735] [2022-11-25 18:23:52,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:23:52,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:23:52,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:52,764 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:23:52,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:23:52,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216123735] [2022-11-25 18:23:52,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216123735] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:23:52,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:23:52,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:23:52,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249928192] [2022-11-25 18:23:52,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:23:52,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:23:52,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:23:52,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:23:52,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:23:52,770 INFO L87 Difference]: Start difference. First operand 7456 states and 9962 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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) [2022-11-25 18:23:57,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:23:57,610 INFO L93 Difference]: Finished difference Result 20416 states and 27798 transitions. [2022-11-25 18:23:57,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:23:57,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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 163 [2022-11-25 18:23:57,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:23:57,658 INFO L225 Difference]: With dead ends: 20416 [2022-11-25 18:23:57,659 INFO L226 Difference]: Without dead ends: 13749 [2022-11-25 18:23:57,666 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 [2022-11-25 18:23:57,667 INFO L413 NwaCegarLoop]: 1862 mSDtfsCounter, 896 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 2485 mSolverCounterSat, 807 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 896 SdHoareTripleChecker+Valid, 2002 SdHoareTripleChecker+Invalid, 3292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 807 IncrementalHoareTripleChecker+Valid, 2485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-25 18:23:57,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [896 Valid, 2002 Invalid, 3292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [807 Valid, 2485 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-25 18:23:57,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13749 states. [2022-11-25 18:23:57,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13749 to 13744. [2022-11-25 18:23:57,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13744 states, 13743 states have (on average 1.2572946227170196) internal successors, (17279), 13743 states have internal predecessors, (17279), 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) [2022-11-25 18:23:57,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13744 states to 13744 states and 17279 transitions. [2022-11-25 18:23:57,918 INFO L78 Accepts]: Start accepts. Automaton has 13744 states and 17279 transitions. Word has length 163 [2022-11-25 18:23:57,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:23:57,919 INFO L495 AbstractCegarLoop]: Abstraction has 13744 states and 17279 transitions. [2022-11-25 18:23:57,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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) [2022-11-25 18:23:57,919 INFO L276 IsEmpty]: Start isEmpty. Operand 13744 states and 17279 transitions. [2022-11-25 18:23:57,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2022-11-25 18:23:57,923 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:23:57,924 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:23:57,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 18:23:57,924 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:23:57,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:23:57,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1728464337, now seen corresponding path program 1 times [2022-11-25 18:23:57,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:23:57,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928838284] [2022-11-25 18:23:57,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:23:57,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:23:57,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:58,404 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-25 18:23:58,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:23:58,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928838284] [2022-11-25 18:23:58,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928838284] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:23:58,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:23:58,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:23:58,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074018283] [2022-11-25 18:23:58,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:23:58,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:23:58,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:23:58,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:23:58,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:23:58,408 INFO L87 Difference]: Start difference. First operand 13744 states and 17279 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 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) [2022-11-25 18:24:03,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:24:03,056 INFO L93 Difference]: Finished difference Result 23552 states and 30332 transitions. [2022-11-25 18:24:03,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:24:03,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 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 250 [2022-11-25 18:24:03,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:24:03,108 INFO L225 Difference]: With dead ends: 23552 [2022-11-25 18:24:03,108 INFO L226 Difference]: Without dead ends: 12966 [2022-11-25 18:24:03,119 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 [2022-11-25 18:24:03,120 INFO L413 NwaCegarLoop]: 1010 mSDtfsCounter, 726 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 2700 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 1189 SdHoareTripleChecker+Invalid, 2704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-25 18:24:03,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 1189 Invalid, 2704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2700 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-25 18:24:03,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12966 states. [2022-11-25 18:24:03,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12966 to 12957. [2022-11-25 18:24:03,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12957 states, 12956 states have (on average 1.2713028712565606) internal successors, (16471), 12956 states have internal predecessors, (16471), 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) [2022-11-25 18:24:03,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12957 states to 12957 states and 16471 transitions. [2022-11-25 18:24:03,376 INFO L78 Accepts]: Start accepts. Automaton has 12957 states and 16471 transitions. Word has length 250 [2022-11-25 18:24:03,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:24:03,377 INFO L495 AbstractCegarLoop]: Abstraction has 12957 states and 16471 transitions. [2022-11-25 18:24:03,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 2 states have internal predecessors, (156), 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) [2022-11-25 18:24:03,378 INFO L276 IsEmpty]: Start isEmpty. Operand 12957 states and 16471 transitions. [2022-11-25 18:24:03,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2022-11-25 18:24:03,383 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:24:03,383 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:24:03,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 18:24:03,383 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:24:03,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:03,384 INFO L85 PathProgramCache]: Analyzing trace with hash -2132574918, now seen corresponding path program 1 times [2022-11-25 18:24:03,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:24:03,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65328294] [2022-11-25 18:24:03,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:03,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:24:03,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:03,654 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 276 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-25 18:24:03,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:24:03,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65328294] [2022-11-25 18:24:03,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65328294] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:24:03,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:24:03,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:24:03,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061675480] [2022-11-25 18:24:03,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:24:03,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:24:03,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:24:03,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:24:03,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:24:03,657 INFO L87 Difference]: Start difference. First operand 12957 states and 16471 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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) [2022-11-25 18:24:08,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:24:08,522 INFO L93 Difference]: Finished difference Result 36153 states and 46429 transitions. [2022-11-25 18:24:08,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:24:08,522 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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 274 [2022-11-25 18:24:08,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:24:08,578 INFO L225 Difference]: With dead ends: 36153 [2022-11-25 18:24:08,578 INFO L226 Difference]: Without dead ends: 23985 [2022-11-25 18:24:08,692 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 [2022-11-25 18:24:08,696 INFO L413 NwaCegarLoop]: 774 mSDtfsCounter, 890 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2376 mSolverCounterSat, 920 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 3296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 920 IncrementalHoareTripleChecker+Valid, 2376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-25 18:24:08,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [890 Valid, 891 Invalid, 3296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [920 Valid, 2376 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-25 18:24:08,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23985 states. [2022-11-25 18:24:08,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23985 to 23189. [2022-11-25 18:24:09,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23189 states, 23188 states have (on average 1.2129549767120924) internal successors, (28126), 23188 states have internal predecessors, (28126), 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) [2022-11-25 18:24:09,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23189 states to 23189 states and 28126 transitions. [2022-11-25 18:24:09,056 INFO L78 Accepts]: Start accepts. Automaton has 23189 states and 28126 transitions. Word has length 274 [2022-11-25 18:24:09,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:24:09,057 INFO L495 AbstractCegarLoop]: Abstraction has 23189 states and 28126 transitions. [2022-11-25 18:24:09,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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) [2022-11-25 18:24:09,057 INFO L276 IsEmpty]: Start isEmpty. Operand 23189 states and 28126 transitions. [2022-11-25 18:24:09,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2022-11-25 18:24:09,063 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:24:09,063 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:24:09,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 18:24:09,064 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:24:09,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:09,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1480343591, now seen corresponding path program 1 times [2022-11-25 18:24:09,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:24:09,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191082637] [2022-11-25 18:24:09,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:09,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:24:09,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:10,684 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 71 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:24:10,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:24:10,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191082637] [2022-11-25 18:24:10,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191082637] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:24:10,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385560385] [2022-11-25 18:24:10,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:10,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:24:10,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4146cef8-f767-43fd-9e6b-5c2acd03dde4/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:10,691 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4146cef8-f767-43fd-9e6b-5c2acd03dde4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:24:10,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4146cef8-f767-43fd-9e6b-5c2acd03dde4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 18:24:10,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:10,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 18:24:10,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:11,028 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-11-25 18:24:11,028 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:24:11,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385560385] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:24:11,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:24:11,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-25 18:24:11,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131391457] [2022-11-25 18:24:11,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:24:11,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:24:11,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:24:11,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:24:11,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:24:11,032 INFO L87 Difference]: Start difference. First operand 23189 states and 28126 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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) [2022-11-25 18:24:15,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:24:15,482 INFO L93 Difference]: Finished difference Result 45587 states and 55457 transitions. [2022-11-25 18:24:15,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:24:15,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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 279 [2022-11-25 18:24:15,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:24:15,517 INFO L225 Difference]: With dead ends: 45587 [2022-11-25 18:24:15,518 INFO L226 Difference]: Without dead ends: 23187 [2022-11-25 18:24:15,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:24:15,535 INFO L413 NwaCegarLoop]: 1361 mSDtfsCounter, 1169 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 2471 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1169 SdHoareTripleChecker+Valid, 1444 SdHoareTripleChecker+Invalid, 2917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 2471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-25 18:24:15,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1169 Valid, 1444 Invalid, 2917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 2471 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-25 18:24:15,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23187 states. [2022-11-25 18:24:15,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23187 to 23186. [2022-11-25 18:24:15,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23186 states, 23185 states have (on average 1.1656674574078068) internal successors, (27026), 23185 states have internal predecessors, (27026), 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) [2022-11-25 18:24:15,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23186 states to 23186 states and 27026 transitions. [2022-11-25 18:24:15,869 INFO L78 Accepts]: Start accepts. Automaton has 23186 states and 27026 transitions. Word has length 279 [2022-11-25 18:24:15,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:24:15,869 INFO L495 AbstractCegarLoop]: Abstraction has 23186 states and 27026 transitions. [2022-11-25 18:24:15,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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) [2022-11-25 18:24:15,870 INFO L276 IsEmpty]: Start isEmpty. Operand 23186 states and 27026 transitions. [2022-11-25 18:24:15,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2022-11-25 18:24:15,877 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:24:15,879 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:24:15,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4146cef8-f767-43fd-9e6b-5c2acd03dde4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:16,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4146cef8-f767-43fd-9e6b-5c2acd03dde4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:24:16,087 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:24:16,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:16,088 INFO L85 PathProgramCache]: Analyzing trace with hash -2088185386, now seen corresponding path program 1 times [2022-11-25 18:24:16,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:24:16,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884901912] [2022-11-25 18:24:16,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:16,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:24:16,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:16,388 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-11-25 18:24:16,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:24:16,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884901912] [2022-11-25 18:24:16,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884901912] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:24:16,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:24:16,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:24:16,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046000099] [2022-11-25 18:24:16,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:24:16,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:24:16,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:24:16,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:24:16,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:24:16,391 INFO L87 Difference]: Start difference. First operand 23186 states and 27026 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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) [2022-11-25 18:24:21,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:24:21,429 INFO L93 Difference]: Finished difference Result 57396 states and 67689 transitions. [2022-11-25 18:24:21,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:24:21,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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 329 [2022-11-25 18:24:21,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:24:21,480 INFO L225 Difference]: With dead ends: 57396 [2022-11-25 18:24:21,480 INFO L226 Difference]: Without dead ends: 34999 [2022-11-25 18:24:21,494 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 [2022-11-25 18:24:21,495 INFO L413 NwaCegarLoop]: 1803 mSDtfsCounter, 825 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 2549 mSolverCounterSat, 722 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 1946 SdHoareTripleChecker+Invalid, 3271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 722 IncrementalHoareTripleChecker+Valid, 2549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-25 18:24:21,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [825 Valid, 1946 Invalid, 3271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [722 Valid, 2549 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-25 18:24:21,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34999 states. [2022-11-25 18:24:21,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34999 to 34208. [2022-11-25 18:24:21,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34208 states, 34207 states have (on average 1.132253632297483) internal successors, (38731), 34207 states have internal predecessors, (38731), 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) [2022-11-25 18:24:21,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34208 states to 34208 states and 38731 transitions. [2022-11-25 18:24:21,966 INFO L78 Accepts]: Start accepts. Automaton has 34208 states and 38731 transitions. Word has length 329 [2022-11-25 18:24:21,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:24:21,967 INFO L495 AbstractCegarLoop]: Abstraction has 34208 states and 38731 transitions. [2022-11-25 18:24:21,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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) [2022-11-25 18:24:21,967 INFO L276 IsEmpty]: Start isEmpty. Operand 34208 states and 38731 transitions. [2022-11-25 18:24:21,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2022-11-25 18:24:21,975 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:24:21,976 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:24:21,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 18:24:21,976 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:24:21,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:21,977 INFO L85 PathProgramCache]: Analyzing trace with hash -863340189, now seen corresponding path program 1 times [2022-11-25 18:24:21,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:24:21,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726098566] [2022-11-25 18:24:21,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:21,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:24:22,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:24,004 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 200 proven. 113 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-25 18:24:24,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:24:24,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726098566] [2022-11-25 18:24:24,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726098566] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:24:24,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797707457] [2022-11-25 18:24:24,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:24,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:24:24,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4146cef8-f767-43fd-9e6b-5c2acd03dde4/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:24,007 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4146cef8-f767-43fd-9e6b-5c2acd03dde4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:24:24,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4146cef8-f767-43fd-9e6b-5c2acd03dde4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 18:24:24,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:24,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 18:24:24,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:24,350 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 236 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-11-25 18:24:24,350 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:24:24,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797707457] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:24:24,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:24:24,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-25 18:24:24,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339104410] [2022-11-25 18:24:24,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:24:24,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:24:24,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:24:24,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:24:24,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:24:24,352 INFO L87 Difference]: Start difference. First operand 34208 states and 38731 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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) [2022-11-25 18:24:28,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:24:28,578 INFO L93 Difference]: Finished difference Result 67618 states and 76660 transitions. [2022-11-25 18:24:28,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:24:28,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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 344 [2022-11-25 18:24:28,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:24:28,619 INFO L225 Difference]: With dead ends: 67618 [2022-11-25 18:24:28,619 INFO L226 Difference]: Without dead ends: 34199 [2022-11-25 18:24:28,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:24:28,641 INFO L413 NwaCegarLoop]: 686 mSDtfsCounter, 1076 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 2393 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1076 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 2920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 2393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-25 18:24:28,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1076 Valid, 814 Invalid, 2920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 2393 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-25 18:24:28,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34199 states. [2022-11-25 18:24:28,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34199 to 34198. [2022-11-25 18:24:29,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34198 states, 34197 states have (on average 1.096704389273913) internal successors, (37504), 34197 states have internal predecessors, (37504), 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) [2022-11-25 18:24:29,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34198 states to 34198 states and 37504 transitions. [2022-11-25 18:24:29,076 INFO L78 Accepts]: Start accepts. Automaton has 34198 states and 37504 transitions. Word has length 344 [2022-11-25 18:24:29,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:24:29,076 INFO L495 AbstractCegarLoop]: Abstraction has 34198 states and 37504 transitions. [2022-11-25 18:24:29,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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) [2022-11-25 18:24:29,077 INFO L276 IsEmpty]: Start isEmpty. Operand 34198 states and 37504 transitions. [2022-11-25 18:24:29,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2022-11-25 18:24:29,094 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:24:29,094 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:24:29,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4146cef8-f767-43fd-9e6b-5c2acd03dde4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:29,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4146cef8-f767-43fd-9e6b-5c2acd03dde4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-25 18:24:29,301 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:24:29,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:29,302 INFO L85 PathProgramCache]: Analyzing trace with hash 692024033, now seen corresponding path program 1 times [2022-11-25 18:24:29,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:24:29,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410872700] [2022-11-25 18:24:29,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:29,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:24:29,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:29,823 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 462 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-11-25 18:24:29,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:24:29,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410872700] [2022-11-25 18:24:29,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410872700] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:24:29,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:24:29,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:24:29,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933050540] [2022-11-25 18:24:29,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:24:29,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:24:29,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:24:29,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:24:29,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:24:29,826 INFO L87 Difference]: Start difference. First operand 34198 states and 37504 transitions. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 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) [2022-11-25 18:24:39,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:24:39,303 INFO L93 Difference]: Finished difference Result 119762 states and 131663 transitions. [2022-11-25 18:24:39,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:24:39,304 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 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 386 [2022-11-25 18:24:39,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:24:39,387 INFO L225 Difference]: With dead ends: 119762 [2022-11-25 18:24:39,387 INFO L226 Difference]: Without dead ends: 86353 [2022-11-25 18:24:39,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:24:39,418 INFO L413 NwaCegarLoop]: 592 mSDtfsCounter, 1713 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 6030 mSolverCounterSat, 1082 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1713 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 7112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1082 IncrementalHoareTripleChecker+Valid, 6030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-11-25 18:24:39,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1713 Valid, 780 Invalid, 7112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1082 Valid, 6030 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2022-11-25 18:24:39,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86353 states. [2022-11-25 18:24:40,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86353 to 83862. [2022-11-25 18:24:40,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83862 states, 83861 states have (on average 1.087823899071082) internal successors, (91226), 83861 states have internal predecessors, (91226), 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) [2022-11-25 18:24:40,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83862 states to 83862 states and 91226 transitions. [2022-11-25 18:24:40,588 INFO L78 Accepts]: Start accepts. Automaton has 83862 states and 91226 transitions. Word has length 386 [2022-11-25 18:24:40,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:24:40,589 INFO L495 AbstractCegarLoop]: Abstraction has 83862 states and 91226 transitions. [2022-11-25 18:24:40,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 3 states have internal predecessors, (287), 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) [2022-11-25 18:24:40,589 INFO L276 IsEmpty]: Start isEmpty. Operand 83862 states and 91226 transitions. [2022-11-25 18:24:40,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2022-11-25 18:24:40,595 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:24:40,597 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-25 18:24:40,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 18:24:40,597 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:24:40,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:40,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1699822566, now seen corresponding path program 1 times [2022-11-25 18:24:40,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:24:40,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903240897] [2022-11-25 18:24:40,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:40,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:24:40,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:42,912 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 284 proven. 113 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-25 18:24:42,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:24:42,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903240897] [2022-11-25 18:24:42,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903240897] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:24:42,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613488007] [2022-11-25 18:24:42,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:42,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:24:42,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4146cef8-f767-43fd-9e6b-5c2acd03dde4/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:42,916 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4146cef8-f767-43fd-9e6b-5c2acd03dde4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:24:42,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4146cef8-f767-43fd-9e6b-5c2acd03dde4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 18:24:43,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:43,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 18:24:43,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:43,328 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 320 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-11-25 18:24:43,328 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:24:43,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613488007] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:24:43,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:24:43,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-25 18:24:43,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558180666] [2022-11-25 18:24:43,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:24:43,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:24:43,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:24:43,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:24:43,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:24:43,333 INFO L87 Difference]: Start difference. First operand 83862 states and 91226 transitions. Second operand has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 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) [2022-11-25 18:24:48,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:24:48,324 INFO L93 Difference]: Finished difference Result 165345 states and 181501 transitions. [2022-11-25 18:24:48,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:24:48,324 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 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 386 [2022-11-25 18:24:48,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:24:48,414 INFO L225 Difference]: With dead ends: 165345 [2022-11-25 18:24:48,414 INFO L226 Difference]: Without dead ends: 93300 [2022-11-25 18:24:48,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 385 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:24:48,447 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 1215 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 2262 mSolverCounterSat, 935 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1215 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 3197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 935 IncrementalHoareTripleChecker+Valid, 2262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-25 18:24:48,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1215 Valid, 407 Invalid, 3197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [935 Valid, 2262 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-25 18:24:48,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93300 states. [2022-11-25 18:24:49,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93300 to 93300. [2022-11-25 18:24:49,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93300 states, 93299 states have (on average 1.091372897887437) internal successors, (101824), 93299 states have internal predecessors, (101824), 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) [2022-11-25 18:24:49,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93300 states to 93300 states and 101824 transitions. [2022-11-25 18:24:49,716 INFO L78 Accepts]: Start accepts. Automaton has 93300 states and 101824 transitions. Word has length 386 [2022-11-25 18:24:49,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:24:49,716 INFO L495 AbstractCegarLoop]: Abstraction has 93300 states and 101824 transitions. [2022-11-25 18:24:49,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.33333333333333) internal successors, (274), 3 states have internal predecessors, (274), 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) [2022-11-25 18:24:49,717 INFO L276 IsEmpty]: Start isEmpty. Operand 93300 states and 101824 transitions. [2022-11-25 18:24:49,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2022-11-25 18:24:49,726 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:24:49,726 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-25 18:24:49,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4146cef8-f767-43fd-9e6b-5c2acd03dde4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:49,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4146cef8-f767-43fd-9e6b-5c2acd03dde4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-25 18:24:49,932 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:24:49,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:49,933 INFO L85 PathProgramCache]: Analyzing trace with hash 486646981, now seen corresponding path program 1 times [2022-11-25 18:24:49,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:24:49,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497046623] [2022-11-25 18:24:49,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:49,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:24:50,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:50,895 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 337 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-11-25 18:24:50,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:24:50,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497046623] [2022-11-25 18:24:50,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497046623] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:24:50,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:24:50,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:24:50,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765140130] [2022-11-25 18:24:50,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:24:50,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:24:50,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:24:50,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:24:50,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:24:50,901 INFO L87 Difference]: Start difference. First operand 93300 states and 101824 transitions. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 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) [2022-11-25 18:24:55,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:24:55,991 INFO L93 Difference]: Finished difference Result 210232 states and 229009 transitions. [2022-11-25 18:24:55,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:24:55,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 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 419 [2022-11-25 18:24:55,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:24:56,151 INFO L225 Difference]: With dead ends: 210232 [2022-11-25 18:24:56,151 INFO L226 Difference]: Without dead ends: 117721 [2022-11-25 18:24:56,180 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 [2022-11-25 18:24:56,182 INFO L413 NwaCegarLoop]: 982 mSDtfsCounter, 797 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 2471 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 797 SdHoareTripleChecker+Valid, 1123 SdHoareTripleChecker+Invalid, 2843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 2471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-25 18:24:56,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [797 Valid, 1123 Invalid, 2843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 2471 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-25 18:24:56,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117721 states. [2022-11-25 18:24:57,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117721 to 115338. [2022-11-25 18:24:57,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115338 states, 115337 states have (on average 1.0818384386623547) internal successors, (124776), 115337 states have internal predecessors, (124776), 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) [2022-11-25 18:24:57,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115338 states to 115338 states and 124776 transitions. [2022-11-25 18:24:57,940 INFO L78 Accepts]: Start accepts. Automaton has 115338 states and 124776 transitions. Word has length 419 [2022-11-25 18:24:57,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:24:57,940 INFO L495 AbstractCegarLoop]: Abstraction has 115338 states and 124776 transitions. [2022-11-25 18:24:57,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 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) [2022-11-25 18:24:57,941 INFO L276 IsEmpty]: Start isEmpty. Operand 115338 states and 124776 transitions. [2022-11-25 18:24:57,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2022-11-25 18:24:57,950 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:24:57,950 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-25 18:24:57,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 18:24:57,951 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:24:57,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:57,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1687088971, now seen corresponding path program 1 times [2022-11-25 18:24:57,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:24:57,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655941497] [2022-11-25 18:24:57,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:57,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:24:58,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:25:00,168 INFO L134 CoverageAnalysis]: Checked inductivity of 619 backedges. 369 proven. 113 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-11-25 18:25:00,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:25:00,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655941497] [2022-11-25 18:25:00,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655941497] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:25:00,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617531948] [2022-11-25 18:25:00,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:25:00,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:25:00,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4146cef8-f767-43fd-9e6b-5c2acd03dde4/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:25:00,171 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4146cef8-f767-43fd-9e6b-5c2acd03dde4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:25:00,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4146cef8-f767-43fd-9e6b-5c2acd03dde4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 18:25:00,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:25:00,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 18:25:00,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:25:00,493 INFO L134 CoverageAnalysis]: Checked inductivity of 619 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 476 trivial. 0 not checked. [2022-11-25 18:25:00,494 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:25:00,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617531948] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:25:00,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:25:00,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-25 18:25:00,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847119220] [2022-11-25 18:25:00,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:25:00,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:25:00,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:25:00,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:25:00,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:25:00,497 INFO L87 Difference]: Start difference. First operand 115338 states and 124776 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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) [2022-11-25 18:25:05,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:25:05,517 INFO L93 Difference]: Finished difference Result 231465 states and 250350 transitions. [2022-11-25 18:25:05,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:25:05,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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 429 [2022-11-25 18:25:05,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:25:05,645 INFO L225 Difference]: With dead ends: 231465 [2022-11-25 18:25:05,645 INFO L226 Difference]: Without dead ends: 116916 [2022-11-25 18:25:05,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 428 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:25:05,679 INFO L413 NwaCegarLoop]: 1389 mSDtfsCounter, 1000 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 2482 mSolverCounterSat, 599 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 1473 SdHoareTripleChecker+Invalid, 3081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 599 IncrementalHoareTripleChecker+Valid, 2482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:25:05,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1000 Valid, 1473 Invalid, 3081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [599 Valid, 2482 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-25 18:25:05,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116916 states. [2022-11-25 18:25:06,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116916 to 115327. [2022-11-25 18:25:07,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115327 states, 115326 states have (on average 1.0682846886218198) internal successors, (123201), 115326 states have internal predecessors, (123201), 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) [2022-11-25 18:25:07,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115327 states to 115327 states and 123201 transitions. [2022-11-25 18:25:07,141 INFO L78 Accepts]: Start accepts. Automaton has 115327 states and 123201 transitions. Word has length 429 [2022-11-25 18:25:07,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:25:07,142 INFO L495 AbstractCegarLoop]: Abstraction has 115327 states and 123201 transitions. [2022-11-25 18:25:07,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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) [2022-11-25 18:25:07,142 INFO L276 IsEmpty]: Start isEmpty. Operand 115327 states and 123201 transitions. [2022-11-25 18:25:07,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2022-11-25 18:25:07,150 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:25:07,151 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:25:07,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4146cef8-f767-43fd-9e6b-5c2acd03dde4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 18:25:07,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4146cef8-f767-43fd-9e6b-5c2acd03dde4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-25 18:25:07,358 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:25:07,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:25:07,358 INFO L85 PathProgramCache]: Analyzing trace with hash -722095746, now seen corresponding path program 1 times [2022-11-25 18:25:07,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:25:07,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044910919] [2022-11-25 18:25:07,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:25:07,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:25:07,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:25:09,654 INFO L134 CoverageAnalysis]: Checked inductivity of 673 backedges. 405 proven. 113 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-11-25 18:25:09,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:25:09,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044910919] [2022-11-25 18:25:09,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044910919] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:25:09,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053046449] [2022-11-25 18:25:09,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:25:09,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:25:09,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4146cef8-f767-43fd-9e6b-5c2acd03dde4/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:25:09,657 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4146cef8-f767-43fd-9e6b-5c2acd03dde4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:25:09,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4146cef8-f767-43fd-9e6b-5c2acd03dde4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 18:25:09,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:25:09,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 18:25:09,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:25:10,047 INFO L134 CoverageAnalysis]: Checked inductivity of 673 backedges. 391 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2022-11-25 18:25:10,047 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:25:10,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053046449] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:25:10,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:25:10,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-25 18:25:10,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140874801] [2022-11-25 18:25:10,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:25:10,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:25:10,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:25:10,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:25:10,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:25:10,051 INFO L87 Difference]: Start difference. First operand 115327 states and 123201 transitions. Second operand has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 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) [2022-11-25 18:25:15,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:25:15,158 INFO L93 Difference]: Finished difference Result 254270 states and 272379 transitions. [2022-11-25 18:25:15,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:25:15,159 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 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 447 [2022-11-25 18:25:15,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:25:15,310 INFO L225 Difference]: With dead ends: 254270 [2022-11-25 18:25:15,310 INFO L226 Difference]: Without dead ends: 139732 [2022-11-25 18:25:15,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 446 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:25:15,345 INFO L413 NwaCegarLoop]: 1644 mSDtfsCounter, 843 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 2494 mSolverCounterSat, 506 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 1762 SdHoareTripleChecker+Invalid, 3000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 506 IncrementalHoareTripleChecker+Valid, 2494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:25:15,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [843 Valid, 1762 Invalid, 3000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [506 Valid, 2494 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-25 18:25:15,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139732 states. [2022-11-25 18:25:16,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139732 to 137361. [2022-11-25 18:25:16,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137361 states, 137360 states have (on average 1.0682367501456027) internal successors, (146733), 137360 states have internal predecessors, (146733), 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) [2022-11-25 18:25:17,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137361 states to 137361 states and 146733 transitions. [2022-11-25 18:25:17,145 INFO L78 Accepts]: Start accepts. Automaton has 137361 states and 146733 transitions. Word has length 447 [2022-11-25 18:25:17,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:25:17,145 INFO L495 AbstractCegarLoop]: Abstraction has 137361 states and 146733 transitions. [2022-11-25 18:25:17,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 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) [2022-11-25 18:25:17,145 INFO L276 IsEmpty]: Start isEmpty. Operand 137361 states and 146733 transitions. [2022-11-25 18:25:17,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2022-11-25 18:25:17,154 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:25:17,154 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:25:17,159 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4146cef8-f767-43fd-9e6b-5c2acd03dde4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-25 18:25:17,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4146cef8-f767-43fd-9e6b-5c2acd03dde4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-25 18:25:17,355 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:25:17,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:25:17,355 INFO L85 PathProgramCache]: Analyzing trace with hash 963776321, now seen corresponding path program 1 times [2022-11-25 18:25:17,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:25:17,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109484553] [2022-11-25 18:25:17,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:25:17,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:25:17,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:25:19,550 INFO L134 CoverageAnalysis]: Checked inductivity of 743 backedges. 473 proven. 113 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2022-11-25 18:25:19,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:25:19,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109484553] [2022-11-25 18:25:19,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109484553] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:25:19,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121974829] [2022-11-25 18:25:19,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:25:19,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:25:19,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4146cef8-f767-43fd-9e6b-5c2acd03dde4/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:25:19,553 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4146cef8-f767-43fd-9e6b-5c2acd03dde4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:25:19,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4146cef8-f767-43fd-9e6b-5c2acd03dde4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 18:25:19,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:25:19,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 18:25:19,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:25:19,971 INFO L134 CoverageAnalysis]: Checked inductivity of 743 backedges. 461 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2022-11-25 18:25:19,971 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:25:19,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121974829] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:25:19,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:25:19,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-25 18:25:19,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934078070] [2022-11-25 18:25:19,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:25:19,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:25:19,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:25:19,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:25:19,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:25:19,974 INFO L87 Difference]: Start difference. First operand 137361 states and 146733 transitions. Second operand has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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) [2022-11-25 18:25:24,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:25:24,662 INFO L93 Difference]: Finished difference Result 275492 states and 294219 transitions. [2022-11-25 18:25:24,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:25:24,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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 484 [2022-11-25 18:25:24,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:25:25,094 INFO L225 Difference]: With dead ends: 275492 [2022-11-25 18:25:25,094 INFO L226 Difference]: Without dead ends: 138920 [2022-11-25 18:25:25,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 483 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:25:25,165 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 973 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 2344 mSolverCounterSat, 672 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 973 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 3016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 672 IncrementalHoareTripleChecker+Valid, 2344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-25 18:25:25,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [973 Valid, 458 Invalid, 3016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [672 Valid, 2344 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-25 18:25:25,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138920 states. [2022-11-25 18:25:26,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138920 to 137331. [2022-11-25 18:25:26,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137331 states, 137330 states have (on average 1.058588800699046) internal successors, (145376), 137330 states have internal predecessors, (145376), 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) [2022-11-25 18:25:27,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137331 states to 137331 states and 145376 transitions. [2022-11-25 18:25:27,163 INFO L78 Accepts]: Start accepts. Automaton has 137331 states and 145376 transitions. Word has length 484 [2022-11-25 18:25:27,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:25:27,164 INFO L495 AbstractCegarLoop]: Abstraction has 137331 states and 145376 transitions. [2022-11-25 18:25:27,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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) [2022-11-25 18:25:27,164 INFO L276 IsEmpty]: Start isEmpty. Operand 137331 states and 145376 transitions. [2022-11-25 18:25:27,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2022-11-25 18:25:27,181 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:25:27,182 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:25:27,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4146cef8-f767-43fd-9e6b-5c2acd03dde4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 18:25:27,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4146cef8-f767-43fd-9e6b-5c2acd03dde4/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-25 18:25:27,384 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:25:27,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:25:27,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1977417202, now seen corresponding path program 1 times [2022-11-25 18:25:27,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:25:27,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735905150] [2022-11-25 18:25:27,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:25:27,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:25:27,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:25:27,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1042 backedges. 734 proven. 0 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2022-11-25 18:25:27,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:25:27,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735905150] [2022-11-25 18:25:27,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735905150] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:25:27,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:25:27,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:25:27,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108821268] [2022-11-25 18:25:27,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:25:27,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:25:27,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:25:27,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:25:27,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:25:27,855 INFO L87 Difference]: Start difference. First operand 137331 states and 145376 transitions. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 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) [2022-11-25 18:25:32,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:25:32,681 INFO L93 Difference]: Finished difference Result 261281 states and 277100 transitions. [2022-11-25 18:25:32,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:25:32,681 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 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 546 [2022-11-25 18:25:32,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:25:32,819 INFO L225 Difference]: With dead ends: 261281 [2022-11-25 18:25:32,819 INFO L226 Difference]: Without dead ends: 138124 [2022-11-25 18:25:32,864 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 [2022-11-25 18:25:32,864 INFO L413 NwaCegarLoop]: 1764 mSDtfsCounter, 722 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 2506 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 1892 SdHoareTripleChecker+Invalid, 2511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 2506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:25:32,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [722 Valid, 1892 Invalid, 2511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 2506 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-25 18:25:32,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138124 states. [2022-11-25 18:25:34,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138124 to 138119. [2022-11-25 18:25:34,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138119 states, 138118 states have (on average 1.058544143413603) internal successors, (146204), 138118 states have internal predecessors, (146204), 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) [2022-11-25 18:25:34,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138119 states to 138119 states and 146204 transitions. [2022-11-25 18:25:34,815 INFO L78 Accepts]: Start accepts. Automaton has 138119 states and 146204 transitions. Word has length 546 [2022-11-25 18:25:34,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:25:34,815 INFO L495 AbstractCegarLoop]: Abstraction has 138119 states and 146204 transitions. [2022-11-25 18:25:34,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 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) [2022-11-25 18:25:34,816 INFO L276 IsEmpty]: Start isEmpty. Operand 138119 states and 146204 transitions. [2022-11-25 18:25:34,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2022-11-25 18:25:34,832 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:25:34,832 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-25 18:25:34,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-25 18:25:34,833 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:25:34,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:25:34,833 INFO L85 PathProgramCache]: Analyzing trace with hash 733844600, now seen corresponding path program 1 times [2022-11-25 18:25:34,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:25:34,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212201879] [2022-11-25 18:25:34,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:25:34,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:25:34,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:25:36,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1066 backedges. 692 proven. 0 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2022-11-25 18:25:36,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:25:36,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212201879] [2022-11-25 18:25:36,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212201879] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:25:36,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:25:36,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:25:36,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3571723] [2022-11-25 18:25:36,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:25:36,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:25:36,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:25:36,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:25:36,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:25:36,163 INFO L87 Difference]: Start difference. First operand 138119 states and 146204 transitions. Second operand has 4 states, 4 states have (on average 83.0) internal successors, (332), 3 states have internal predecessors, (332), 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) [2022-11-25 18:25:45,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:25:45,676 INFO L93 Difference]: Finished difference Result 324388 states and 343250 transitions. [2022-11-25 18:25:45,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:25:45,676 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 83.0) internal successors, (332), 3 states have internal predecessors, (332), 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 548 [2022-11-25 18:25:45,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:25:45,892 INFO L225 Difference]: With dead ends: 324388 [2022-11-25 18:25:45,892 INFO L226 Difference]: Without dead ends: 187058 [2022-11-25 18:25:45,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:25:45,953 INFO L413 NwaCegarLoop]: 593 mSDtfsCounter, 1663 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 5691 mSolverCounterSat, 732 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1663 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 6423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 732 IncrementalHoareTripleChecker+Valid, 5691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-11-25 18:25:45,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1663 Valid, 766 Invalid, 6423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [732 Valid, 5691 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2022-11-25 18:25:46,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187058 states. [2022-11-25 18:25:48,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187058 to 182231. [2022-11-25 18:25:48,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182231 states, 182230 states have (on average 1.0578280195357515) internal successors, (192768), 182230 states have internal predecessors, (192768), 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) [2022-11-25 18:25:48,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182231 states to 182231 states and 192768 transitions. [2022-11-25 18:25:48,455 INFO L78 Accepts]: Start accepts. Automaton has 182231 states and 192768 transitions. Word has length 548 [2022-11-25 18:25:48,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:25:48,455 INFO L495 AbstractCegarLoop]: Abstraction has 182231 states and 192768 transitions. [2022-11-25 18:25:48,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.0) internal successors, (332), 3 states have internal predecessors, (332), 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) [2022-11-25 18:25:48,456 INFO L276 IsEmpty]: Start isEmpty. Operand 182231 states and 192768 transitions. [2022-11-25 18:25:48,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 560 [2022-11-25 18:25:48,470 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:25:48,471 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:25:48,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-25 18:25:48,471 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:25:48,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:25:48,472 INFO L85 PathProgramCache]: Analyzing trace with hash 343538416, now seen corresponding path program 1 times [2022-11-25 18:25:48,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:25:48,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262059758] [2022-11-25 18:25:48,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:25:48,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:25:48,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat