./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label01.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88e1b48c-1c68-46eb-8057-1a879cb1241f/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88e1b48c-1c68-46eb-8057-1a879cb1241f/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88e1b48c-1c68-46eb-8057-1a879cb1241f/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88e1b48c-1c68-46eb-8057-1a879cb1241f/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label01.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88e1b48c-1c68-46eb-8057-1a879cb1241f/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88e1b48c-1c68-46eb-8057-1a879cb1241f/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 60893087aa786664ad64540c06a3cfd94f74ea911d6a1d2cfa0eca217367fc44 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 10:38:51,731 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:38:51,733 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:38:51,757 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:38:51,760 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:38:51,764 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:38:51,767 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:38:51,770 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:38:51,773 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:38:51,779 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:38:51,780 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:38:51,782 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:38:51,783 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:38:51,786 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:38:51,787 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:38:51,790 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:38:51,791 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:38:51,792 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:38:51,794 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:38:51,801 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:38:51,802 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:38:51,805 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:38:51,807 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:38:51,808 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:38:51,813 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:38:51,814 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:38:51,814 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:38:51,816 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:38:51,817 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:38:51,819 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:38:51,820 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:38:51,821 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:38:51,823 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:38:51,825 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:38:51,827 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:38:51,827 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:38:51,828 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:38:51,828 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:38:51,828 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:38:51,830 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:38:51,830 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:38:51,831 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88e1b48c-1c68-46eb-8057-1a879cb1241f/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 10:38:51,868 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:38:51,871 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:38:51,872 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:38:51,872 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:38:51,873 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:38:51,874 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:38:51,875 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:38:51,876 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:38:51,876 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:38:51,876 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:38:51,877 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:38:51,878 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:38:51,878 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:38:51,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:38:51,878 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:38:51,879 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:38:51,879 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:38:51,879 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:38:51,879 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:38:51,879 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:38:51,880 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:38:51,880 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:38:51,881 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:38:51,881 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:38:51,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:38:51,882 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:38:51,882 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:38:51,882 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:38:51,883 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:38:51,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:38:51,883 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:38:51,884 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:38:51,884 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:38:51,884 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88e1b48c-1c68-46eb-8057-1a879cb1241f/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88e1b48c-1c68-46eb-8057-1a879cb1241f/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 60893087aa786664ad64540c06a3cfd94f74ea911d6a1d2cfa0eca217367fc44 [2022-11-20 10:38:52,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:38:52,182 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:38:52,185 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:38:52,186 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:38:52,187 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:38:52,188 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88e1b48c-1c68-46eb-8057-1a879cb1241f/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label01.c [2022-11-20 10:38:55,247 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:38:55,774 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:38:55,774 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88e1b48c-1c68-46eb-8057-1a879cb1241f/sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label01.c [2022-11-20 10:38:55,809 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88e1b48c-1c68-46eb-8057-1a879cb1241f/bin/uautomizer-ug76WZFUDN/data/228f37c6d/dc45105e1c034fab9c88c0353a686a63/FLAG5f21c9e9e [2022-11-20 10:38:55,827 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88e1b48c-1c68-46eb-8057-1a879cb1241f/bin/uautomizer-ug76WZFUDN/data/228f37c6d/dc45105e1c034fab9c88c0353a686a63 [2022-11-20 10:38:55,832 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:38:55,833 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:38:55,838 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:38:55,838 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:38:55,841 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:38:55,842 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:38:55" (1/1) ... [2022-11-20 10:38:55,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@196f785 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:38:55, skipping insertion in model container [2022-11-20 10:38:55,843 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:38:55" (1/1) ... [2022-11-20 10:38:55,850 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:38:56,023 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:38:56,421 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_88e1b48c-1c68-46eb-8057-1a879cb1241f/sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label01.c[20463,20476] [2022-11-20 10:38:56,499 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_88e1b48c-1c68-46eb-8057-1a879cb1241f/sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label01.c[26018,26031] [2022-11-20 10:38:57,410 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:38:57,423 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:38:57,482 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_88e1b48c-1c68-46eb-8057-1a879cb1241f/sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label01.c[20463,20476] [2022-11-20 10:38:57,494 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_88e1b48c-1c68-46eb-8057-1a879cb1241f/sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label01.c[26018,26031] [2022-11-20 10:38:58,052 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:38:58,085 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:38:58,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:38:58 WrapperNode [2022-11-20 10:38:58,086 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:38:58,087 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:38:58,088 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:38:58,088 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:38:58,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:38:58" (1/1) ... [2022-11-20 10:38:58,155 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:38:58" (1/1) ... [2022-11-20 10:38:58,682 INFO L138 Inliner]: procedures = 38, calls = 24, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 5183 [2022-11-20 10:38:58,682 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:38:58,683 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:38:58,683 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:38:58,683 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:38:58,693 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:38:58" (1/1) ... [2022-11-20 10:38:58,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:38:58" (1/1) ... [2022-11-20 10:38:58,774 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:38:58" (1/1) ... [2022-11-20 10:38:58,775 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:38:58" (1/1) ... [2022-11-20 10:38:58,975 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:38:58" (1/1) ... [2022-11-20 10:38:59,007 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:38:58" (1/1) ... [2022-11-20 10:38:59,053 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:38:58" (1/1) ... [2022-11-20 10:38:59,067 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:38:58" (1/1) ... [2022-11-20 10:38:59,142 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:38:59,144 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:38:59,144 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:38:59,144 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:38:59,147 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:38:58" (1/1) ... [2022-11-20 10:38:59,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:38:59,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88e1b48c-1c68-46eb-8057-1a879cb1241f/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:38:59,187 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88e1b48c-1c68-46eb-8057-1a879cb1241f/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:38:59,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88e1b48c-1c68-46eb-8057-1a879cb1241f/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:38:59,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:38:59,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:38:59,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:38:59,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:38:59,420 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:38:59,426 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:39:04,574 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:39:04,601 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:39:04,602 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 10:39:04,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:39:04 BoogieIcfgContainer [2022-11-20 10:39:04,606 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:39:04,608 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:39:04,609 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:39:04,612 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:39:04,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:38:55" (1/3) ... [2022-11-20 10:39:04,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66aa2953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:39:04, skipping insertion in model container [2022-11-20 10:39:04,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:38:58" (2/3) ... [2022-11-20 10:39:04,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66aa2953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:39:04, skipping insertion in model container [2022-11-20 10:39:04,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:39:04" (3/3) ... [2022-11-20 10:39:04,617 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label01.c [2022-11-20 10:39:04,638 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:39:04,639 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-20 10:39:04,738 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:39:04,746 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;@50c72917, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:39:04,746 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-20 10:39:04,757 INFO L276 IsEmpty]: Start isEmpty. Operand has 930 states, 927 states have (on average 1.9039913700107876) internal successors, (1765), 929 states have internal predecessors, (1765), 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) [2022-11-20 10:39:04,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-20 10:39:04,769 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:39:04,770 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] [2022-11-20 10:39:04,770 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:39:04,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:39:04,778 INFO L85 PathProgramCache]: Analyzing trace with hash 495960789, now seen corresponding path program 1 times [2022-11-20 10:39:04,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:39:04,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018429816] [2022-11-20 10:39:04,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:04,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:39:04,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:05,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:39:05,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:39:05,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018429816] [2022-11-20 10:39:05,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018429816] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:39:05,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:39:05,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:39:05,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818855855] [2022-11-20 10:39:05,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:39:05,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 10:39:05,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:39:05,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 10:39:05,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 10:39:05,141 INFO L87 Difference]: Start difference. First operand has 930 states, 927 states have (on average 1.9039913700107876) internal successors, (1765), 929 states have internal predecessors, (1765), 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 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 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) [2022-11-20 10:39:05,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:39:05,224 INFO L93 Difference]: Finished difference Result 1804 states and 3422 transitions. [2022-11-20 10:39:05,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 10:39:05,226 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 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 28 [2022-11-20 10:39:05,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:39:05,244 INFO L225 Difference]: With dead ends: 1804 [2022-11-20 10:39:05,245 INFO L226 Difference]: Without dead ends: 864 [2022-11-20 10:39:05,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 10:39:05,255 INFO L413 NwaCegarLoop]: 1699 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1699 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:39:05,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1699 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:39:05,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2022-11-20 10:39:05,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 864. [2022-11-20 10:39:05,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 862 states have (on average 1.8932714617169373) internal successors, (1632), 863 states have internal predecessors, (1632), 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) [2022-11-20 10:39:05,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1632 transitions. [2022-11-20 10:39:05,342 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1632 transitions. Word has length 28 [2022-11-20 10:39:05,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:39:05,342 INFO L495 AbstractCegarLoop]: Abstraction has 864 states and 1632 transitions. [2022-11-20 10:39:05,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 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) [2022-11-20 10:39:05,343 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1632 transitions. [2022-11-20 10:39:05,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-20 10:39:05,344 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:39:05,344 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] [2022-11-20 10:39:05,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:39:05,345 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:39:05,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:39:05,345 INFO L85 PathProgramCache]: Analyzing trace with hash 714815507, now seen corresponding path program 1 times [2022-11-20 10:39:05,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:39:05,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532798575] [2022-11-20 10:39:05,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:05,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:39:05,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:05,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:39:05,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:39:05,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532798575] [2022-11-20 10:39:05,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532798575] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:39:05,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:39:05,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:39:05,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985925568] [2022-11-20 10:39:05,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:39:05,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:39:05,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:39:05,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:39:05,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:39:05,643 INFO L87 Difference]: Start difference. First operand 864 states and 1632 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 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) [2022-11-20 10:39:05,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:39:05,819 INFO L93 Difference]: Finished difference Result 922 states and 1723 transitions. [2022-11-20 10:39:05,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:39:05,820 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 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 28 [2022-11-20 10:39:05,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:39:05,824 INFO L225 Difference]: With dead ends: 922 [2022-11-20 10:39:05,825 INFO L226 Difference]: Without dead ends: 864 [2022-11-20 10:39:05,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:39:05,827 INFO L413 NwaCegarLoop]: 1630 mSDtfsCounter, 3 mSDsluCounter, 4837 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6467 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:39:05,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6467 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:39:05,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2022-11-20 10:39:05,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 864. [2022-11-20 10:39:05,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 862 states have (on average 1.8352668213457077) internal successors, (1582), 863 states have internal predecessors, (1582), 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) [2022-11-20 10:39:05,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1582 transitions. [2022-11-20 10:39:05,855 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1582 transitions. Word has length 28 [2022-11-20 10:39:05,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:39:05,855 INFO L495 AbstractCegarLoop]: Abstraction has 864 states and 1582 transitions. [2022-11-20 10:39:05,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 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) [2022-11-20 10:39:05,856 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1582 transitions. [2022-11-20 10:39:05,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-20 10:39:05,857 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:39:05,857 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:39:05,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:39:05,858 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:39:05,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:39:05,858 INFO L85 PathProgramCache]: Analyzing trace with hash 567685333, now seen corresponding path program 1 times [2022-11-20 10:39:05,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:39:05,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973364968] [2022-11-20 10:39:05,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:05,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:39:05,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:06,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:39:06,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:39:06,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973364968] [2022-11-20 10:39:06,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973364968] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:39:06,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:39:06,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:39:06,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548671680] [2022-11-20 10:39:06,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:39:06,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:39:06,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:39:06,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:39:06,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:39:06,024 INFO L87 Difference]: Start difference. First operand 864 states and 1582 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 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) [2022-11-20 10:39:10,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:39:10,904 INFO L93 Difference]: Finished difference Result 2368 states and 4455 transitions. [2022-11-20 10:39:10,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:39:10,905 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 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 48 [2022-11-20 10:39:10,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:39:10,913 INFO L225 Difference]: With dead ends: 2368 [2022-11-20 10:39:10,913 INFO L226 Difference]: Without dead ends: 1615 [2022-11-20 10:39:10,915 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 [2022-11-20 10:39:10,916 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 910 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 910 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 3275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 998 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-20 10:39:10,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [910 Valid, 220 Invalid, 3275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [998 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-20 10:39:10,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1615 states. [2022-11-20 10:39:10,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1615 to 1615. [2022-11-20 10:39:10,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1615 states, 1613 states have (on average 1.833230006199628) internal successors, (2957), 1614 states have internal predecessors, (2957), 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) [2022-11-20 10:39:10,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1615 states to 1615 states and 2957 transitions. [2022-11-20 10:39:10,967 INFO L78 Accepts]: Start accepts. Automaton has 1615 states and 2957 transitions. Word has length 48 [2022-11-20 10:39:10,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:39:10,968 INFO L495 AbstractCegarLoop]: Abstraction has 1615 states and 2957 transitions. [2022-11-20 10:39:10,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 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) [2022-11-20 10:39:10,969 INFO L276 IsEmpty]: Start isEmpty. Operand 1615 states and 2957 transitions. [2022-11-20 10:39:10,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-20 10:39:10,971 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:39:10,972 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:39:10,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 10:39:10,972 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:39:10,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:39:10,973 INFO L85 PathProgramCache]: Analyzing trace with hash -585081934, now seen corresponding path program 1 times [2022-11-20 10:39:10,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:39:10,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128917965] [2022-11-20 10:39:10,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:10,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:39:11,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:11,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:39:11,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:39:11,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128917965] [2022-11-20 10:39:11,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128917965] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:39:11,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:39:11,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 10:39:11,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125143827] [2022-11-20 10:39:11,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:39:11,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 10:39:11,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:39:11,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 10:39:11,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:39:11,356 INFO L87 Difference]: Start difference. First operand 1615 states and 2957 transitions. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 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) [2022-11-20 10:39:11,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:39:11,994 INFO L93 Difference]: Finished difference Result 2371 states and 4175 transitions. [2022-11-20 10:39:11,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 10:39:11,995 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 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 77 [2022-11-20 10:39:11,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:39:12,006 INFO L225 Difference]: With dead ends: 2371 [2022-11-20 10:39:12,007 INFO L226 Difference]: Without dead ends: 2317 [2022-11-20 10:39:12,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-11-20 10:39:12,010 INFO L413 NwaCegarLoop]: 1578 mSDtfsCounter, 11503 mSDsluCounter, 3556 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11503 SdHoareTripleChecker+Valid, 5134 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 10:39:12,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11503 Valid, 5134 Invalid, 310 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 10:39:12,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2317 states. [2022-11-20 10:39:12,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2317 to 1667. [2022-11-20 10:39:12,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1667 states, 1665 states have (on average 1.8264264264264265) internal successors, (3041), 1666 states have internal predecessors, (3041), 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) [2022-11-20 10:39:12,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 3041 transitions. [2022-11-20 10:39:12,084 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 3041 transitions. Word has length 77 [2022-11-20 10:39:12,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:39:12,085 INFO L495 AbstractCegarLoop]: Abstraction has 1667 states and 3041 transitions. [2022-11-20 10:39:12,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 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) [2022-11-20 10:39:12,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 3041 transitions. [2022-11-20 10:39:12,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-20 10:39:12,088 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:39:12,088 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:39:12,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 10:39:12,089 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:39:12,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:39:12,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1038714270, now seen corresponding path program 1 times [2022-11-20 10:39:12,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:39:12,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220031678] [2022-11-20 10:39:12,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:12,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:39:12,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:12,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:39:12,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:39:12,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220031678] [2022-11-20 10:39:12,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220031678] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:39:12,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:39:12,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:39:12,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360148797] [2022-11-20 10:39:12,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:39:12,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:39:12,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:39:12,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:39:12,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:39:12,203 INFO L87 Difference]: Start difference. First operand 1667 states and 3041 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2022-11-20 10:39:12,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:39:12,285 INFO L93 Difference]: Finished difference Result 1868 states and 3364 transitions. [2022-11-20 10:39:12,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:39:12,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 79 [2022-11-20 10:39:12,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:39:12,295 INFO L225 Difference]: With dead ends: 1868 [2022-11-20 10:39:12,295 INFO L226 Difference]: Without dead ends: 1762 [2022-11-20 10:39:12,296 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 [2022-11-20 10:39:12,297 INFO L413 NwaCegarLoop]: 1580 mSDtfsCounter, 1498 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 1662 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:39:12,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 1662 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:39:12,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1762 states. [2022-11-20 10:39:12,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1762 to 1760. [2022-11-20 10:39:12,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1760 states, 1758 states have (on average 1.8139931740614335) internal successors, (3189), 1759 states have internal predecessors, (3189), 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) [2022-11-20 10:39:12,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1760 states to 1760 states and 3189 transitions. [2022-11-20 10:39:12,378 INFO L78 Accepts]: Start accepts. Automaton has 1760 states and 3189 transitions. Word has length 79 [2022-11-20 10:39:12,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:39:12,379 INFO L495 AbstractCegarLoop]: Abstraction has 1760 states and 3189 transitions. [2022-11-20 10:39:12,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2022-11-20 10:39:12,380 INFO L276 IsEmpty]: Start isEmpty. Operand 1760 states and 3189 transitions. [2022-11-20 10:39:12,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-20 10:39:12,381 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:39:12,382 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:39:12,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 10:39:12,382 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:39:12,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:39:12,383 INFO L85 PathProgramCache]: Analyzing trace with hash -972220758, now seen corresponding path program 1 times [2022-11-20 10:39:12,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:39:12,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024339848] [2022-11-20 10:39:12,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:12,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:39:12,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:12,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:39:12,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:39:12,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024339848] [2022-11-20 10:39:12,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024339848] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:39:12,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:39:12,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 10:39:12,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462763001] [2022-11-20 10:39:12,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:39:12,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 10:39:12,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:39:12,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 10:39:12,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:39:12,844 INFO L87 Difference]: Start difference. First operand 1760 states and 3189 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 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) [2022-11-20 10:39:13,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:39:13,297 INFO L93 Difference]: Finished difference Result 1961 states and 3509 transitions. [2022-11-20 10:39:13,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:39:13,297 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 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 79 [2022-11-20 10:39:13,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:39:13,305 INFO L225 Difference]: With dead ends: 1961 [2022-11-20 10:39:13,305 INFO L226 Difference]: Without dead ends: 1762 [2022-11-20 10:39:13,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2022-11-20 10:39:13,308 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 3328 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3328 SdHoareTripleChecker+Valid, 2092 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:39:13,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3328 Valid, 2092 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:39:13,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1762 states. [2022-11-20 10:39:13,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1762 to 1760. [2022-11-20 10:39:13,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1760 states, 1758 states have (on average 1.8128555176336747) internal successors, (3187), 1759 states have internal predecessors, (3187), 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) [2022-11-20 10:39:13,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1760 states to 1760 states and 3187 transitions. [2022-11-20 10:39:13,370 INFO L78 Accepts]: Start accepts. Automaton has 1760 states and 3187 transitions. Word has length 79 [2022-11-20 10:39:13,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:39:13,370 INFO L495 AbstractCegarLoop]: Abstraction has 1760 states and 3187 transitions. [2022-11-20 10:39:13,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 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) [2022-11-20 10:39:13,371 INFO L276 IsEmpty]: Start isEmpty. Operand 1760 states and 3187 transitions. [2022-11-20 10:39:13,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-20 10:39:13,372 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:39:13,372 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:39:13,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 10:39:13,373 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:39:13,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:39:13,374 INFO L85 PathProgramCache]: Analyzing trace with hash -488795339, now seen corresponding path program 1 times [2022-11-20 10:39:13,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:39:13,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853766402] [2022-11-20 10:39:13,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:13,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:39:13,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:13,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:39:13,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:39:13,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853766402] [2022-11-20 10:39:13,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853766402] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:39:13,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:39:13,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 10:39:13,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393547415] [2022-11-20 10:39:13,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:39:13,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:39:13,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:39:13,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:39:13,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:39:13,680 INFO L87 Difference]: Start difference. First operand 1760 states and 3187 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 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) [2022-11-20 10:39:13,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:39:13,982 INFO L93 Difference]: Finished difference Result 1956 states and 3494 transitions. [2022-11-20 10:39:13,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 10:39:13,983 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 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 80 [2022-11-20 10:39:13,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:39:13,990 INFO L225 Difference]: With dead ends: 1956 [2022-11-20 10:39:13,991 INFO L226 Difference]: Without dead ends: 1954 [2022-11-20 10:39:13,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-20 10:39:13,995 INFO L413 NwaCegarLoop]: 1657 mSDtfsCounter, 514 mSDsluCounter, 9209 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 10866 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:39:13,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [514 Valid, 10866 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:39:13,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2022-11-20 10:39:14,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1766. [2022-11-20 10:39:14,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1766 states, 1764 states have (on average 1.8095238095238095) internal successors, (3192), 1765 states have internal predecessors, (3192), 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) [2022-11-20 10:39:14,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1766 states to 1766 states and 3192 transitions. [2022-11-20 10:39:14,075 INFO L78 Accepts]: Start accepts. Automaton has 1766 states and 3192 transitions. Word has length 80 [2022-11-20 10:39:14,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:39:14,075 INFO L495 AbstractCegarLoop]: Abstraction has 1766 states and 3192 transitions. [2022-11-20 10:39:14,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 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) [2022-11-20 10:39:14,076 INFO L276 IsEmpty]: Start isEmpty. Operand 1766 states and 3192 transitions. [2022-11-20 10:39:14,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-20 10:39:14,082 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:39:14,083 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:39:14,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 10:39:14,084 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:39:14,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:39:14,084 INFO L85 PathProgramCache]: Analyzing trace with hash 295676394, now seen corresponding path program 1 times [2022-11-20 10:39:14,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:39:14,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146055150] [2022-11-20 10:39:14,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:14,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:39:14,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:14,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:39:14,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:39:14,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146055150] [2022-11-20 10:39:14,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146055150] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:39:14,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:39:14,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:39:14,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280271110] [2022-11-20 10:39:14,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:39:14,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:39:14,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:39:14,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:39:14,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:39:14,169 INFO L87 Difference]: Start difference. First operand 1766 states and 3192 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:14,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:39:14,248 INFO L93 Difference]: Finished difference Result 1984 states and 3533 transitions. [2022-11-20 10:39:14,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:39:14,249 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-11-20 10:39:14,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:39:14,257 INFO L225 Difference]: With dead ends: 1984 [2022-11-20 10:39:14,257 INFO L226 Difference]: Without dead ends: 1872 [2022-11-20 10:39:14,260 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 [2022-11-20 10:39:14,262 INFO L413 NwaCegarLoop]: 1654 mSDtfsCounter, 1516 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 1742 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:39:14,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1516 Valid, 1742 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:39:14,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1872 states. [2022-11-20 10:39:14,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1872 to 1870. [2022-11-20 10:39:14,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1870 states, 1868 states have (on average 1.794967880085653) internal successors, (3353), 1869 states have internal predecessors, (3353), 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) [2022-11-20 10:39:14,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1870 states to 1870 states and 3353 transitions. [2022-11-20 10:39:14,352 INFO L78 Accepts]: Start accepts. Automaton has 1870 states and 3353 transitions. Word has length 81 [2022-11-20 10:39:14,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:39:14,353 INFO L495 AbstractCegarLoop]: Abstraction has 1870 states and 3353 transitions. [2022-11-20 10:39:14,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:14,353 INFO L276 IsEmpty]: Start isEmpty. Operand 1870 states and 3353 transitions. [2022-11-20 10:39:14,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-20 10:39:14,354 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:39:14,360 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:39:14,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 10:39:14,361 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:39:14,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:39:14,361 INFO L85 PathProgramCache]: Analyzing trace with hash -2057221398, now seen corresponding path program 1 times [2022-11-20 10:39:14,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:39:14,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926504437] [2022-11-20 10:39:14,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:14,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:39:14,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:14,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:39:14,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:39:14,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926504437] [2022-11-20 10:39:14,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926504437] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:39:14,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:39:14,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:39:14,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540995469] [2022-11-20 10:39:14,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:39:14,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:39:14,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:39:14,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:39:14,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:39:14,428 INFO L87 Difference]: Start difference. First operand 1870 states and 3353 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:14,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:39:14,559 INFO L93 Difference]: Finished difference Result 2460 states and 4273 transitions. [2022-11-20 10:39:14,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:39:14,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-11-20 10:39:14,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:39:14,567 INFO L225 Difference]: With dead ends: 2460 [2022-11-20 10:39:14,568 INFO L226 Difference]: Without dead ends: 2153 [2022-11-20 10:39:14,569 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 [2022-11-20 10:39:14,571 INFO L413 NwaCegarLoop]: 1656 mSDtfsCounter, 1514 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 1748 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:39:14,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1514 Valid, 1748 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:39:14,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2153 states. [2022-11-20 10:39:14,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2153 to 2151. [2022-11-20 10:39:14,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2151 states, 2149 states have (on average 1.7612843182875757) internal successors, (3785), 2150 states have internal predecessors, (3785), 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) [2022-11-20 10:39:14,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2151 states to 2151 states and 3785 transitions. [2022-11-20 10:39:14,706 INFO L78 Accepts]: Start accepts. Automaton has 2151 states and 3785 transitions. Word has length 81 [2022-11-20 10:39:14,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:39:14,707 INFO L495 AbstractCegarLoop]: Abstraction has 2151 states and 3785 transitions. [2022-11-20 10:39:14,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:14,707 INFO L276 IsEmpty]: Start isEmpty. Operand 2151 states and 3785 transitions. [2022-11-20 10:39:14,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-20 10:39:14,708 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:39:14,708 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:39:14,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 10:39:14,709 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:39:14,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:39:14,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1894306838, now seen corresponding path program 1 times [2022-11-20 10:39:14,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:39:14,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852071721] [2022-11-20 10:39:14,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:14,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:39:14,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:14,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:39:14,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:39:14,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852071721] [2022-11-20 10:39:14,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852071721] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:39:14,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:39:14,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:39:14,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505840384] [2022-11-20 10:39:14,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:39:14,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:39:14,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:39:14,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:39:14,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:39:14,823 INFO L87 Difference]: Start difference. First operand 2151 states and 3785 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:15,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:39:15,037 INFO L93 Difference]: Finished difference Result 3279 states and 5527 transitions. [2022-11-20 10:39:15,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:39:15,038 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-11-20 10:39:15,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:39:15,048 INFO L225 Difference]: With dead ends: 3279 [2022-11-20 10:39:15,048 INFO L226 Difference]: Without dead ends: 2691 [2022-11-20 10:39:15,050 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 [2022-11-20 10:39:15,050 INFO L413 NwaCegarLoop]: 1654 mSDtfsCounter, 1512 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 1750 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:39:15,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1512 Valid, 1750 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:39:15,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2691 states. [2022-11-20 10:39:15,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2691 to 2689. [2022-11-20 10:39:15,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2689 states, 2687 states have (on average 1.712318570896911) internal successors, (4601), 2688 states have internal predecessors, (4601), 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) [2022-11-20 10:39:15,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2689 states to 2689 states and 4601 transitions. [2022-11-20 10:39:15,266 INFO L78 Accepts]: Start accepts. Automaton has 2689 states and 4601 transitions. Word has length 81 [2022-11-20 10:39:15,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:39:15,266 INFO L495 AbstractCegarLoop]: Abstraction has 2689 states and 4601 transitions. [2022-11-20 10:39:15,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:15,267 INFO L276 IsEmpty]: Start isEmpty. Operand 2689 states and 4601 transitions. [2022-11-20 10:39:15,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-20 10:39:15,268 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:39:15,268 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:39:15,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 10:39:15,268 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:39:15,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:39:15,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1630450454, now seen corresponding path program 1 times [2022-11-20 10:39:15,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:39:15,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663272221] [2022-11-20 10:39:15,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:15,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:39:15,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:15,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:39:15,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:39:15,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663272221] [2022-11-20 10:39:15,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663272221] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:39:15,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:39:15,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:39:15,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440315124] [2022-11-20 10:39:15,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:39:15,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:39:15,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:39:15,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:39:15,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:39:15,337 INFO L87 Difference]: Start difference. First operand 2689 states and 4601 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:15,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:39:15,768 INFO L93 Difference]: Finished difference Result 4845 states and 7891 transitions. [2022-11-20 10:39:15,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:39:15,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-11-20 10:39:15,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:39:15,782 INFO L225 Difference]: With dead ends: 4845 [2022-11-20 10:39:15,783 INFO L226 Difference]: Without dead ends: 3719 [2022-11-20 10:39:15,785 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 [2022-11-20 10:39:15,786 INFO L413 NwaCegarLoop]: 1652 mSDtfsCounter, 1510 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 1752 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:39:15,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 1752 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:39:15,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3719 states. [2022-11-20 10:39:16,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3719 to 3717. [2022-11-20 10:39:16,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3717 states, 3715 states have (on average 1.6519515477792732) internal successors, (6137), 3716 states have internal predecessors, (6137), 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) [2022-11-20 10:39:16,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3717 states to 3717 states and 6137 transitions. [2022-11-20 10:39:16,210 INFO L78 Accepts]: Start accepts. Automaton has 3717 states and 6137 transitions. Word has length 81 [2022-11-20 10:39:16,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:39:16,210 INFO L495 AbstractCegarLoop]: Abstraction has 3717 states and 6137 transitions. [2022-11-20 10:39:16,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:16,211 INFO L276 IsEmpty]: Start isEmpty. Operand 3717 states and 6137 transitions. [2022-11-20 10:39:16,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-20 10:39:16,212 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:39:16,212 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:39:16,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 10:39:16,213 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:39:16,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:39:16,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1687310058, now seen corresponding path program 1 times [2022-11-20 10:39:16,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:39:16,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004909799] [2022-11-20 10:39:16,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:16,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:39:16,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:16,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:39:16,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:39:16,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004909799] [2022-11-20 10:39:16,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004909799] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:39:16,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:39:16,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:39:16,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952198362] [2022-11-20 10:39:16,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:39:16,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:39:16,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:39:16,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:39:16,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:39:16,284 INFO L87 Difference]: Start difference. First operand 3717 states and 6137 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:17,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:39:17,079 INFO L93 Difference]: Finished difference Result 7833 states and 12331 transitions. [2022-11-20 10:39:17,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:39:17,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-11-20 10:39:17,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:39:17,117 INFO L225 Difference]: With dead ends: 7833 [2022-11-20 10:39:17,117 INFO L226 Difference]: Without dead ends: 5679 [2022-11-20 10:39:17,121 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 [2022-11-20 10:39:17,122 INFO L413 NwaCegarLoop]: 1640 mSDtfsCounter, 1506 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1506 SdHoareTripleChecker+Valid, 1748 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:39:17,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1506 Valid, 1748 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:39:17,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5679 states. [2022-11-20 10:39:17,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5679 to 5677. [2022-11-20 10:39:17,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5677 states, 5675 states have (on average 1.5888986784140968) internal successors, (9017), 5676 states have internal predecessors, (9017), 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) [2022-11-20 10:39:17,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5677 states to 5677 states and 9017 transitions. [2022-11-20 10:39:17,827 INFO L78 Accepts]: Start accepts. Automaton has 5677 states and 9017 transitions. Word has length 81 [2022-11-20 10:39:17,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:39:17,828 INFO L495 AbstractCegarLoop]: Abstraction has 5677 states and 9017 transitions. [2022-11-20 10:39:17,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:17,828 INFO L276 IsEmpty]: Start isEmpty. Operand 5677 states and 9017 transitions. [2022-11-20 10:39:17,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-20 10:39:17,829 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:39:17,830 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:39:17,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 10:39:17,830 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:39:17,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:39:17,831 INFO L85 PathProgramCache]: Analyzing trace with hash -826724374, now seen corresponding path program 1 times [2022-11-20 10:39:17,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:39:17,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054947048] [2022-11-20 10:39:17,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:17,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:39:17,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:17,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:39:17,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:39:17,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054947048] [2022-11-20 10:39:17,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054947048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:39:17,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:39:17,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:39:17,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945652323] [2022-11-20 10:39:17,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:39:17,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:39:17,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:39:17,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:39:17,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:39:17,965 INFO L87 Difference]: Start difference. First operand 5677 states and 9017 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:19,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:39:19,226 INFO L93 Difference]: Finished difference Result 13521 states and 20635 transitions. [2022-11-20 10:39:19,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:39:19,237 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-11-20 10:39:19,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:39:19,258 INFO L225 Difference]: With dead ends: 13521 [2022-11-20 10:39:19,258 INFO L226 Difference]: Without dead ends: 9407 [2022-11-20 10:39:19,268 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 [2022-11-20 10:39:19,269 INFO L413 NwaCegarLoop]: 1638 mSDtfsCounter, 1504 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1750 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:39:19,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 1750 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:39:19,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9407 states. [2022-11-20 10:39:20,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9407 to 9405. [2022-11-20 10:39:20,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9405 states, 9403 states have (on average 1.5306816973306392) internal successors, (14393), 9404 states have internal predecessors, (14393), 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) [2022-11-20 10:39:20,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9405 states to 9405 states and 14393 transitions. [2022-11-20 10:39:20,694 INFO L78 Accepts]: Start accepts. Automaton has 9405 states and 14393 transitions. Word has length 81 [2022-11-20 10:39:20,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:39:20,695 INFO L495 AbstractCegarLoop]: Abstraction has 9405 states and 14393 transitions. [2022-11-20 10:39:20,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:20,695 INFO L276 IsEmpty]: Start isEmpty. Operand 9405 states and 14393 transitions. [2022-11-20 10:39:20,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-20 10:39:20,696 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:39:20,696 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:39:20,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 10:39:20,697 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:39:20,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:39:20,698 INFO L85 PathProgramCache]: Analyzing trace with hash -392188438, now seen corresponding path program 1 times [2022-11-20 10:39:20,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:39:20,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739538499] [2022-11-20 10:39:20,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:20,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:39:20,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:20,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:39:20,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:39:20,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739538499] [2022-11-20 10:39:20,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739538499] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:39:20,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:39:20,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:39:20,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105887075] [2022-11-20 10:39:20,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:39:20,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:39:20,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:39:20,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:39:20,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:39:20,768 INFO L87 Difference]: Start difference. First operand 9405 states and 14393 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:22,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:39:22,969 INFO L93 Difference]: Finished difference Result 24321 states and 36091 transitions. [2022-11-20 10:39:22,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:39:22,969 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-11-20 10:39:22,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:39:23,010 INFO L225 Difference]: With dead ends: 24321 [2022-11-20 10:39:23,010 INFO L226 Difference]: Without dead ends: 16479 [2022-11-20 10:39:23,022 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 [2022-11-20 10:39:23,023 INFO L413 NwaCegarLoop]: 1650 mSDtfsCounter, 1508 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1508 SdHoareTripleChecker+Valid, 1754 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:39:23,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1508 Valid, 1754 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:39:23,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16479 states. [2022-11-20 10:39:25,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16479 to 16477. [2022-11-20 10:39:25,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16477 states, 16475 states have (on average 1.4796358118361153) internal successors, (24377), 16476 states have internal predecessors, (24377), 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) [2022-11-20 10:39:25,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16477 states to 16477 states and 24377 transitions. [2022-11-20 10:39:25,319 INFO L78 Accepts]: Start accepts. Automaton has 16477 states and 24377 transitions. Word has length 81 [2022-11-20 10:39:25,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:39:25,320 INFO L495 AbstractCegarLoop]: Abstraction has 16477 states and 24377 transitions. [2022-11-20 10:39:25,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:39:25,320 INFO L276 IsEmpty]: Start isEmpty. Operand 16477 states and 24377 transitions. [2022-11-20 10:39:25,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-20 10:39:25,326 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:39:25,326 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 10:39:25,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 10:39:25,326 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:39:25,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:39:25,327 INFO L85 PathProgramCache]: Analyzing trace with hash -730351122, now seen corresponding path program 1 times [2022-11-20 10:39:25,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:39:25,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453208779] [2022-11-20 10:39:25,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:25,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:39:25,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:25,625 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 10:39:25,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:39:25,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453208779] [2022-11-20 10:39:25,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453208779] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:39:25,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:39:25,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 10:39:25,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203919253] [2022-11-20 10:39:25,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:39:25,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 10:39:25,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:39:25,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 10:39:25,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:39:25,628 INFO L87 Difference]: Start difference. First operand 16477 states and 24377 transitions. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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) [2022-11-20 10:39:43,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:39:43,023 INFO L93 Difference]: Finished difference Result 119533 states and 172865 transitions. [2022-11-20 10:39:43,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:39:43,024 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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 104 [2022-11-20 10:39:43,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:39:43,316 INFO L225 Difference]: With dead ends: 119533 [2022-11-20 10:39:43,316 INFO L226 Difference]: Without dead ends: 109035 [2022-11-20 10:39:43,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-11-20 10:39:43,355 INFO L413 NwaCegarLoop]: 1668 mSDtfsCounter, 9869 mSDsluCounter, 2988 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9869 SdHoareTripleChecker+Valid, 4656 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:39:43,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9869 Valid, 4656 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:39:43,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109035 states. [2022-11-20 10:39:49,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109035 to 29213. [2022-11-20 10:39:49,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29213 states, 29211 states have (on average 1.4567457464653726) internal successors, (42553), 29212 states have internal predecessors, (42553), 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) [2022-11-20 10:39:49,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29213 states to 29213 states and 42553 transitions. [2022-11-20 10:39:49,545 INFO L78 Accepts]: Start accepts. Automaton has 29213 states and 42553 transitions. Word has length 104 [2022-11-20 10:39:49,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:39:49,546 INFO L495 AbstractCegarLoop]: Abstraction has 29213 states and 42553 transitions. [2022-11-20 10:39:49,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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) [2022-11-20 10:39:49,546 INFO L276 IsEmpty]: Start isEmpty. Operand 29213 states and 42553 transitions. [2022-11-20 10:39:49,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-20 10:39:49,553 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:39:49,553 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 10:39:49,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 10:39:49,554 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:39:49,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:39:49,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1211718382, now seen corresponding path program 1 times [2022-11-20 10:39:49,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:39:49,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917618245] [2022-11-20 10:39:49,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:39:49,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:39:49,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:39:49,806 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 10:39:49,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:39:49,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917618245] [2022-11-20 10:39:49,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917618245] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:39:49,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:39:49,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 10:39:49,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480270360] [2022-11-20 10:39:49,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:39:49,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 10:39:49,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:39:49,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 10:39:49,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-20 10:39:49,811 INFO L87 Difference]: Start difference. First operand 29213 states and 42553 transitions. Second operand has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 9 states have internal predecessors, (101), 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)