./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7b7c4e-e5c9-4b70-a7f3-2568391f8981/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7b7c4e-e5c9-4b70-a7f3-2568391f8981/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7b7c4e-e5c9-4b70-a7f3-2568391f8981/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7b7c4e-e5c9-4b70-a7f3-2568391f8981/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7b7c4e-e5c9-4b70-a7f3-2568391f8981/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7b7c4e-e5c9-4b70-a7f3-2568391f8981/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b08ac6f553c71235d6c242059db3dcace1924bc9c3a272f401632c3f1b127664 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:24:57,674 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:24:57,677 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:24:57,738 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:24:57,739 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:24:57,747 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:24:57,749 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:24:57,753 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:24:57,756 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:24:57,765 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:24:57,767 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:24:57,769 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:24:57,770 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:24:57,773 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:24:57,774 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:24:57,777 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:24:57,778 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:24:57,780 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:24:57,782 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:24:57,788 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:24:57,791 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:24:57,793 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:24:57,797 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:24:57,798 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:24:57,809 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:24:57,811 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:24:57,811 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:24:57,813 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:24:57,814 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:24:57,815 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:24:57,818 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:24:57,819 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:24:57,821 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:24:57,824 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:24:57,825 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:24:57,825 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:24:57,826 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:24:57,827 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:24:57,827 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:24:57,828 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:24:57,829 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:24:57,830 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7b7c4e-e5c9-4b70-a7f3-2568391f8981/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:24:57,897 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:24:57,898 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:24:57,899 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:24:57,899 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:24:57,900 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:24:57,901 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:24:57,902 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:24:57,902 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:24:57,903 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:24:57,903 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:24:57,904 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:24:57,905 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:24:57,905 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:24:57,906 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:24:57,906 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:24:57,907 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:24:57,907 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:24:57,907 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:24:57,908 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:24:57,908 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:24:57,908 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:24:57,909 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:24:57,909 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:24:57,910 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:24:57,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:24:57,911 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:24:57,911 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:24:57,911 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:24:57,912 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:24:57,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:24:57,912 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:24:57,913 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:24:57,914 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:24:57,914 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_fa7b7c4e-e5c9-4b70-a7f3-2568391f8981/bin/uautomizer-Dbtcem3rbc/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7b7c4e-e5c9-4b70-a7f3-2568391f8981/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b08ac6f553c71235d6c242059db3dcace1924bc9c3a272f401632c3f1b127664 [2022-11-02 20:24:58,287 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:24:58,336 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:24:58,340 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:24:58,342 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:24:58,347 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:24:58,348 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7b7c4e-e5c9-4b70-a7f3-2568391f8981/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-1.c [2022-11-02 20:24:58,436 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7b7c4e-e5c9-4b70-a7f3-2568391f8981/bin/uautomizer-Dbtcem3rbc/data/851d1bcfb/d7fb3bc7cc9b4a1791f3d21f728665bf/FLAG0a28acf76 [2022-11-02 20:24:59,053 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:24:59,054 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7b7c4e-e5c9-4b70-a7f3-2568391f8981/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-1.c [2022-11-02 20:24:59,070 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7b7c4e-e5c9-4b70-a7f3-2568391f8981/bin/uautomizer-Dbtcem3rbc/data/851d1bcfb/d7fb3bc7cc9b4a1791f3d21f728665bf/FLAG0a28acf76 [2022-11-02 20:24:59,339 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7b7c4e-e5c9-4b70-a7f3-2568391f8981/bin/uautomizer-Dbtcem3rbc/data/851d1bcfb/d7fb3bc7cc9b4a1791f3d21f728665bf [2022-11-02 20:24:59,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:24:59,350 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:24:59,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:24:59,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:24:59,359 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:24:59,360 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:24:59" (1/1) ... [2022-11-02 20:24:59,362 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ffa1edf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:59, skipping insertion in model container [2022-11-02 20:24:59,362 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:24:59" (1/1) ... [2022-11-02 20:24:59,371 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:24:59,463 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:24:59,739 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7b7c4e-e5c9-4b70-a7f3-2568391f8981/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-1.c[911,924] [2022-11-02 20:24:59,806 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7b7c4e-e5c9-4b70-a7f3-2568391f8981/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-1.c[8416,8429] [2022-11-02 20:24:59,884 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:24:59,895 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:24:59,914 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7b7c4e-e5c9-4b70-a7f3-2568391f8981/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-1.c[911,924] [2022-11-02 20:24:59,942 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7b7c4e-e5c9-4b70-a7f3-2568391f8981/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-1.c[8416,8429] [2022-11-02 20:24:59,995 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:25:00,020 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:25:00,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:25:00 WrapperNode [2022-11-02 20:25:00,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:25:00,022 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:25:00,022 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:25:00,022 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:25:00,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:25:00" (1/1) ... [2022-11-02 20:25:00,045 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:25:00" (1/1) ... [2022-11-02 20:25:00,098 INFO L138 Inliner]: procedures = 69, calls = 82, calls flagged for inlining = 38, calls inlined = 38, statements flattened = 788 [2022-11-02 20:25:00,099 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:25:00,100 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:25:00,100 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:25:00,100 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:25:00,111 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:25:00" (1/1) ... [2022-11-02 20:25:00,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:25:00" (1/1) ... [2022-11-02 20:25:00,116 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:25:00" (1/1) ... [2022-11-02 20:25:00,117 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:25:00" (1/1) ... [2022-11-02 20:25:00,129 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:25:00" (1/1) ... [2022-11-02 20:25:00,143 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:25:00" (1/1) ... [2022-11-02 20:25:00,146 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:25:00" (1/1) ... [2022-11-02 20:25:00,149 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:25:00" (1/1) ... [2022-11-02 20:25:00,155 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:25:00,156 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:25:00,156 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:25:00,157 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:25:00,158 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:25:00" (1/1) ... [2022-11-02 20:25:00,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:25:00,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7b7c4e-e5c9-4b70-a7f3-2568391f8981/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:25:00,195 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7b7c4e-e5c9-4b70-a7f3-2568391f8981/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:25:00,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7b7c4e-e5c9-4b70-a7f3-2568391f8981/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:25:00,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:25:00,253 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-02 20:25:00,253 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-02 20:25:00,253 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-11-02 20:25:00,255 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-11-02 20:25:00,255 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-11-02 20:25:00,256 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-11-02 20:25:00,257 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-11-02 20:25:00,257 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-11-02 20:25:00,257 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-11-02 20:25:00,258 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-11-02 20:25:00,258 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-11-02 20:25:00,258 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-11-02 20:25:00,258 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-11-02 20:25:00,258 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-11-02 20:25:00,259 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-11-02 20:25:00,259 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-11-02 20:25:00,259 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-11-02 20:25:00,259 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-11-02 20:25:00,259 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-11-02 20:25:00,260 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-11-02 20:25:00,260 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-11-02 20:25:00,260 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-11-02 20:25:00,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:25:00,260 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-11-02 20:25:00,261 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-11-02 20:25:00,261 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-11-02 20:25:00,261 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-11-02 20:25:00,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:25:00,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:25:00,262 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-11-02 20:25:00,262 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-11-02 20:25:00,454 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:25:00,457 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:25:01,477 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2022-11-02 20:25:01,478 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2022-11-02 20:25:01,604 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:25:01,617 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:25:01,618 INFO L300 CfgBuilder]: Removed 14 assume(true) statements. [2022-11-02 20:25:01,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:25:01 BoogieIcfgContainer [2022-11-02 20:25:01,621 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:25:01,624 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:25:01,625 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:25:01,642 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:25:01,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:24:59" (1/3) ... [2022-11-02 20:25:01,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d43484d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:25:01, skipping insertion in model container [2022-11-02 20:25:01,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:25:00" (2/3) ... [2022-11-02 20:25:01,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d43484d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:25:01, skipping insertion in model container [2022-11-02 20:25:01,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:25:01" (3/3) ... [2022-11-02 20:25:01,646 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.07.cil-1.c [2022-11-02 20:25:01,699 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:25:01,700 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-02 20:25:01,791 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:25:01,799 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;@299729ad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:25:01,799 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-02 20:25:01,813 INFO L276 IsEmpty]: Start isEmpty. Operand has 374 states, 320 states have (on average 1.6125) internal successors, (516), 326 states have internal predecessors, (516), 37 states have call successors, (37), 14 states have call predecessors, (37), 14 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2022-11-02 20:25:01,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-02 20:25:01,839 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:01,841 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:25:01,843 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:01,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:01,852 INFO L85 PathProgramCache]: Analyzing trace with hash -334337363, now seen corresponding path program 1 times [2022-11-02 20:25:01,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:25:01,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860237254] [2022-11-02 20:25:01,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:01,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:25:02,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:02,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:25:02,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:02,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:25:02,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:02,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-02 20:25:02,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:02,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:25:02,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:02,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 20:25:02,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:02,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 20:25:02,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:02,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-02 20:25:02,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:02,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:02,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:25:02,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860237254] [2022-11-02 20:25:02,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860237254] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:02,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:02,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:25:02,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106066099] [2022-11-02 20:25:02,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:02,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:25:02,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:25:02,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:25:02,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:25:02,460 INFO L87 Difference]: Start difference. First operand has 374 states, 320 states have (on average 1.6125) internal successors, (516), 326 states have internal predecessors, (516), 37 states have call successors, (37), 14 states have call predecessors, (37), 14 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-02 20:25:03,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:03,715 INFO L93 Difference]: Finished difference Result 743 states and 1170 transitions. [2022-11-02 20:25:03,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:25:03,719 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-11-02 20:25:03,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:03,747 INFO L225 Difference]: With dead ends: 743 [2022-11-02 20:25:03,748 INFO L226 Difference]: Without dead ends: 382 [2022-11-02 20:25:03,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:25:03,768 INFO L413 NwaCegarLoop]: 555 mSDtfsCounter, 586 mSDsluCounter, 952 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 598 SdHoareTripleChecker+Valid, 1507 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:03,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [598 Valid, 1507 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 20:25:03,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-11-02 20:25:03,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 364. [2022-11-02 20:25:03,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 312 states have (on average 1.5224358974358974) internal successors, (475), 316 states have internal predecessors, (475), 37 states have call successors, (37), 14 states have call predecessors, (37), 13 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-11-02 20:25:03,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 547 transitions. [2022-11-02 20:25:03,892 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 547 transitions. Word has length 65 [2022-11-02 20:25:03,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:03,893 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 547 transitions. [2022-11-02 20:25:03,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-02 20:25:03,893 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 547 transitions. [2022-11-02 20:25:03,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-02 20:25:03,897 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:03,898 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:25:03,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:25:03,898 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:03,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:03,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1721122773, now seen corresponding path program 1 times [2022-11-02 20:25:03,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:25:03,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649395428] [2022-11-02 20:25:03,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:03,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:25:03,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:04,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:25:04,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:04,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:25:04,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:04,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-02 20:25:04,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:04,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:25:04,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:04,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 20:25:04,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:04,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 20:25:04,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:04,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-02 20:25:04,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:04,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:04,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:25:04,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649395428] [2022-11-02 20:25:04,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649395428] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:04,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:04,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:25:04,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655827231] [2022-11-02 20:25:04,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:04,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:25:04,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:25:04,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:25:04,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:25:04,309 INFO L87 Difference]: Start difference. First operand 364 states and 547 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-02 20:25:05,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:05,705 INFO L93 Difference]: Finished difference Result 619 states and 916 transitions. [2022-11-02 20:25:05,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:25:05,706 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-11-02 20:25:05,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:05,711 INFO L225 Difference]: With dead ends: 619 [2022-11-02 20:25:05,711 INFO L226 Difference]: Without dead ends: 515 [2022-11-02 20:25:05,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:25:05,714 INFO L413 NwaCegarLoop]: 555 mSDtfsCounter, 974 mSDsluCounter, 1257 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 981 SdHoareTripleChecker+Valid, 1812 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:05,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [981 Valid, 1812 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-02 20:25:05,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2022-11-02 20:25:05,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 476. [2022-11-02 20:25:05,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 402 states have (on average 1.4950248756218905) internal successors, (601), 408 states have internal predecessors, (601), 50 states have call successors, (50), 21 states have call predecessors, (50), 22 states have return successors, (53), 49 states have call predecessors, (53), 48 states have call successors, (53) [2022-11-02 20:25:05,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 704 transitions. [2022-11-02 20:25:05,787 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 704 transitions. Word has length 65 [2022-11-02 20:25:05,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:05,787 INFO L495 AbstractCegarLoop]: Abstraction has 476 states and 704 transitions. [2022-11-02 20:25:05,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-02 20:25:05,788 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 704 transitions. [2022-11-02 20:25:05,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-02 20:25:05,803 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:05,803 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:25:05,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:25:05,804 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:05,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:05,805 INFO L85 PathProgramCache]: Analyzing trace with hash -42234133, now seen corresponding path program 1 times [2022-11-02 20:25:05,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:25:05,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799472218] [2022-11-02 20:25:05,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:05,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:25:05,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:06,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:25:06,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:06,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:25:06,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:06,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-02 20:25:06,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:06,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:25:06,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:06,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 20:25:06,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:06,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 20:25:06,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:06,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-02 20:25:06,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:06,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:06,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:25:06,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799472218] [2022-11-02 20:25:06,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799472218] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:06,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:06,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:25:06,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706462573] [2022-11-02 20:25:06,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:06,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:25:06,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:25:06,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:25:06,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:25:06,231 INFO L87 Difference]: Start difference. First operand 476 states and 704 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-02 20:25:07,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:07,942 INFO L93 Difference]: Finished difference Result 873 states and 1269 transitions. [2022-11-02 20:25:07,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-02 20:25:07,943 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-11-02 20:25:07,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:07,952 INFO L225 Difference]: With dead ends: 873 [2022-11-02 20:25:07,952 INFO L226 Difference]: Without dead ends: 664 [2022-11-02 20:25:07,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:25:07,961 INFO L413 NwaCegarLoop]: 633 mSDtfsCounter, 1064 mSDsluCounter, 1586 mSDsCounter, 0 mSdLazyCounter, 1262 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1092 SdHoareTripleChecker+Valid, 2219 SdHoareTripleChecker+Invalid, 1389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:07,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1092 Valid, 2219 Invalid, 1389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1262 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-02 20:25:07,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2022-11-02 20:25:08,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 588. [2022-11-02 20:25:08,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 492 states have (on average 1.475609756097561) internal successors, (726), 500 states have internal predecessors, (726), 63 states have call successors, (63), 28 states have call predecessors, (63), 31 states have return successors, (74), 63 states have call predecessors, (74), 61 states have call successors, (74) [2022-11-02 20:25:08,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 863 transitions. [2022-11-02 20:25:08,067 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 863 transitions. Word has length 65 [2022-11-02 20:25:08,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:08,067 INFO L495 AbstractCegarLoop]: Abstraction has 588 states and 863 transitions. [2022-11-02 20:25:08,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-02 20:25:08,068 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 863 transitions. [2022-11-02 20:25:08,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-02 20:25:08,070 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:08,071 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:25:08,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:25:08,071 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:08,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:08,072 INFO L85 PathProgramCache]: Analyzing trace with hash -2070820243, now seen corresponding path program 1 times [2022-11-02 20:25:08,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:25:08,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431387348] [2022-11-02 20:25:08,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:08,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:25:08,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:08,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:25:08,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:08,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:25:08,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:08,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-02 20:25:08,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:08,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:25:08,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:08,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 20:25:08,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:08,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 20:25:08,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:08,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-02 20:25:08,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:08,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:08,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:25:08,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431387348] [2022-11-02 20:25:08,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431387348] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:08,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:08,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:25:08,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534497233] [2022-11-02 20:25:08,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:08,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:25:08,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:25:08,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:25:08,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:25:08,282 INFO L87 Difference]: Start difference. First operand 588 states and 863 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-02 20:25:11,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:11,093 INFO L93 Difference]: Finished difference Result 2134 states and 3060 transitions. [2022-11-02 20:25:11,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-02 20:25:11,094 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 65 [2022-11-02 20:25:11,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:11,110 INFO L225 Difference]: With dead ends: 2134 [2022-11-02 20:25:11,110 INFO L226 Difference]: Without dead ends: 1801 [2022-11-02 20:25:11,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-11-02 20:25:11,125 INFO L413 NwaCegarLoop]: 685 mSDtfsCounter, 2953 mSDsluCounter, 1880 mSDsCounter, 0 mSdLazyCounter, 1790 mSolverCounterSat, 629 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2971 SdHoareTripleChecker+Valid, 2565 SdHoareTripleChecker+Invalid, 2419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 629 IncrementalHoareTripleChecker+Valid, 1790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:11,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2971 Valid, 2565 Invalid, 2419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [629 Valid, 1790 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-02 20:25:11,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1801 states. [2022-11-02 20:25:11,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1801 to 1641. [2022-11-02 20:25:11,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1641 states, 1340 states have (on average 1.3970149253731343) internal successors, (1872), 1363 states have internal predecessors, (1872), 173 states have call successors, (173), 111 states have call predecessors, (173), 126 states have return successors, (207), 169 states have call predecessors, (207), 171 states have call successors, (207) [2022-11-02 20:25:11,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1641 states to 1641 states and 2252 transitions. [2022-11-02 20:25:11,358 INFO L78 Accepts]: Start accepts. Automaton has 1641 states and 2252 transitions. Word has length 65 [2022-11-02 20:25:11,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:11,358 INFO L495 AbstractCegarLoop]: Abstraction has 1641 states and 2252 transitions. [2022-11-02 20:25:11,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-02 20:25:11,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1641 states and 2252 transitions. [2022-11-02 20:25:11,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-02 20:25:11,360 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:11,361 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:25:11,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:25:11,361 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:11,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:11,362 INFO L85 PathProgramCache]: Analyzing trace with hash 160145276, now seen corresponding path program 1 times [2022-11-02 20:25:11,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:25:11,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259816321] [2022-11-02 20:25:11,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:11,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:25:11,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:11,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:25:11,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:11,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:25:11,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:11,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-02 20:25:11,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:11,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:25:11,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:11,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-02 20:25:11,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:11,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-02 20:25:11,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:11,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-02 20:25:11,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:11,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:11,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:25:11,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259816321] [2022-11-02 20:25:11,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259816321] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:11,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:11,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:25:11,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792226444] [2022-11-02 20:25:11,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:11,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:25:11,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:25:11,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:25:11,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:25:11,599 INFO L87 Difference]: Start difference. First operand 1641 states and 2252 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-02 20:25:13,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:13,065 INFO L93 Difference]: Finished difference Result 3257 states and 4472 transitions. [2022-11-02 20:25:13,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:25:13,066 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-11-02 20:25:13,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:13,078 INFO L225 Difference]: With dead ends: 3257 [2022-11-02 20:25:13,078 INFO L226 Difference]: Without dead ends: 1877 [2022-11-02 20:25:13,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:25:13,083 INFO L413 NwaCegarLoop]: 537 mSDtfsCounter, 682 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 1269 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 2146 SdHoareTripleChecker+Invalid, 1399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:13,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [684 Valid, 2146 Invalid, 1399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1269 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-02 20:25:13,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1877 states. [2022-11-02 20:25:13,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1877 to 1711. [2022-11-02 20:25:13,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1711 states, 1396 states have (on average 1.3810888252148996) internal successors, (1928), 1419 states have internal predecessors, (1928), 173 states have call successors, (173), 111 states have call predecessors, (173), 140 states have return successors, (221), 183 states have call predecessors, (221), 171 states have call successors, (221) [2022-11-02 20:25:13,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1711 states to 1711 states and 2322 transitions. [2022-11-02 20:25:13,256 INFO L78 Accepts]: Start accepts. Automaton has 1711 states and 2322 transitions. Word has length 66 [2022-11-02 20:25:13,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:13,257 INFO L495 AbstractCegarLoop]: Abstraction has 1711 states and 2322 transitions. [2022-11-02 20:25:13,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-02 20:25:13,257 INFO L276 IsEmpty]: Start isEmpty. Operand 1711 states and 2322 transitions. [2022-11-02 20:25:13,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-02 20:25:13,258 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:13,259 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:25:13,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:25:13,259 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:13,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:13,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1226058118, now seen corresponding path program 1 times [2022-11-02 20:25:13,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:25:13,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285143551] [2022-11-02 20:25:13,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:13,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:25:13,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:13,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:25:13,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:13,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:25:13,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:13,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-02 20:25:13,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:13,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:25:13,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:13,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-02 20:25:13,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:13,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-02 20:25:13,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:13,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-02 20:25:13,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:13,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:13,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:25:13,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285143551] [2022-11-02 20:25:13,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285143551] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:13,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:13,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:25:13,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580430591] [2022-11-02 20:25:13,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:13,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:25:13,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:25:13,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:25:13,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:25:13,565 INFO L87 Difference]: Start difference. First operand 1711 states and 2322 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-02 20:25:15,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:15,173 INFO L93 Difference]: Finished difference Result 3325 states and 4495 transitions. [2022-11-02 20:25:15,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:25:15,174 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-11-02 20:25:15,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:15,187 INFO L225 Difference]: With dead ends: 3325 [2022-11-02 20:25:15,187 INFO L226 Difference]: Without dead ends: 1875 [2022-11-02 20:25:15,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:25:15,193 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 466 mSDsluCounter, 1853 mSDsCounter, 0 mSdLazyCounter, 1298 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 2387 SdHoareTripleChecker+Invalid, 1389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:15,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [467 Valid, 2387 Invalid, 1389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1298 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 20:25:15,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1875 states. [2022-11-02 20:25:15,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1875 to 1751. [2022-11-02 20:25:15,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1751 states, 1428 states have (on average 1.3683473389355743) internal successors, (1954), 1451 states have internal predecessors, (1954), 173 states have call successors, (173), 111 states have call predecessors, (173), 148 states have return successors, (229), 191 states have call predecessors, (229), 171 states have call successors, (229) [2022-11-02 20:25:15,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1751 states to 1751 states and 2356 transitions. [2022-11-02 20:25:15,395 INFO L78 Accepts]: Start accepts. Automaton has 1751 states and 2356 transitions. Word has length 66 [2022-11-02 20:25:15,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:15,396 INFO L495 AbstractCegarLoop]: Abstraction has 1751 states and 2356 transitions. [2022-11-02 20:25:15,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-02 20:25:15,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1751 states and 2356 transitions. [2022-11-02 20:25:15,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-02 20:25:15,397 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:15,397 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:25:15,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:25:15,399 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:15,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:15,400 INFO L85 PathProgramCache]: Analyzing trace with hash 2039549880, now seen corresponding path program 1 times [2022-11-02 20:25:15,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:25:15,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888116577] [2022-11-02 20:25:15,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:15,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:25:15,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:15,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:25:15,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:15,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:25:15,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:15,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-02 20:25:15,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:15,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:25:15,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:15,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-02 20:25:15,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:15,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-02 20:25:15,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:15,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-02 20:25:15,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:15,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:15,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:25:15,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888116577] [2022-11-02 20:25:15,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888116577] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:15,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:15,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:25:15,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88660764] [2022-11-02 20:25:15,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:15,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:25:15,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:25:15,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:25:15,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:25:15,595 INFO L87 Difference]: Start difference. First operand 1751 states and 2356 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-02 20:25:18,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:18,500 INFO L93 Difference]: Finished difference Result 5485 states and 7458 transitions. [2022-11-02 20:25:18,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-02 20:25:18,501 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 66 [2022-11-02 20:25:18,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:18,516 INFO L225 Difference]: With dead ends: 5485 [2022-11-02 20:25:18,516 INFO L226 Difference]: Without dead ends: 2148 [2022-11-02 20:25:18,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-11-02 20:25:18,527 INFO L413 NwaCegarLoop]: 675 mSDtfsCounter, 3039 mSDsluCounter, 1929 mSDsCounter, 0 mSdLazyCounter, 1687 mSolverCounterSat, 646 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3057 SdHoareTripleChecker+Valid, 2604 SdHoareTripleChecker+Invalid, 2333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 646 IncrementalHoareTripleChecker+Valid, 1687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:18,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3057 Valid, 2604 Invalid, 2333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [646 Valid, 1687 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-02 20:25:18,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2148 states. [2022-11-02 20:25:18,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2148 to 1952. [2022-11-02 20:25:18,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1952 states, 1559 states have (on average 1.3290570878768442) internal successors, (2072), 1584 states have internal predecessors, (2072), 213 states have call successors, (213), 139 states have call predecessors, (213), 178 states have return successors, (273), 231 states have call predecessors, (273), 211 states have call successors, (273) [2022-11-02 20:25:18,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1952 states to 1952 states and 2558 transitions. [2022-11-02 20:25:18,779 INFO L78 Accepts]: Start accepts. Automaton has 1952 states and 2558 transitions. Word has length 66 [2022-11-02 20:25:18,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:18,780 INFO L495 AbstractCegarLoop]: Abstraction has 1952 states and 2558 transitions. [2022-11-02 20:25:18,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-02 20:25:18,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1952 states and 2558 transitions. [2022-11-02 20:25:18,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-02 20:25:18,789 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:18,789 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:25:18,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:25:18,790 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:18,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:18,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1663597100, now seen corresponding path program 1 times [2022-11-02 20:25:18,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:25:18,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314884159] [2022-11-02 20:25:18,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:18,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:25:18,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:18,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:25:18,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:18,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:25:18,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:19,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-02 20:25:19,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:19,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:25:19,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:19,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-02 20:25:19,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:19,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-02 20:25:19,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:19,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-02 20:25:19,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:19,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-02 20:25:19,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:19,082 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-02 20:25:19,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:25:19,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314884159] [2022-11-02 20:25:19,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314884159] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:19,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:19,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:25:19,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316367601] [2022-11-02 20:25:19,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:19,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:25:19,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:25:19,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:25:19,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:25:19,085 INFO L87 Difference]: Start difference. First operand 1952 states and 2558 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-02 20:25:20,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:20,694 INFO L93 Difference]: Finished difference Result 3489 states and 4546 transitions. [2022-11-02 20:25:20,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:25:20,695 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 91 [2022-11-02 20:25:20,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:20,707 INFO L225 Difference]: With dead ends: 3489 [2022-11-02 20:25:20,707 INFO L226 Difference]: Without dead ends: 2036 [2022-11-02 20:25:20,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2022-11-02 20:25:20,712 INFO L413 NwaCegarLoop]: 553 mSDtfsCounter, 1079 mSDsluCounter, 1349 mSDsCounter, 0 mSdLazyCounter, 1103 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1105 SdHoareTripleChecker+Valid, 1902 SdHoareTripleChecker+Invalid, 1251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:20,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1105 Valid, 1902 Invalid, 1251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 1103 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 20:25:20,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2036 states. [2022-11-02 20:25:20,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2036 to 1731. [2022-11-02 20:25:20,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1731 states, 1391 states have (on average 1.3306973400431343) internal successors, (1851), 1411 states have internal predecessors, (1851), 185 states have call successors, (185), 120 states have call predecessors, (185), 153 states have return successors, (233), 201 states have call predecessors, (233), 183 states have call successors, (233) [2022-11-02 20:25:20,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2269 transitions. [2022-11-02 20:25:20,939 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2269 transitions. Word has length 91 [2022-11-02 20:25:20,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:20,939 INFO L495 AbstractCegarLoop]: Abstraction has 1731 states and 2269 transitions. [2022-11-02 20:25:20,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-02 20:25:20,940 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2269 transitions. [2022-11-02 20:25:20,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-02 20:25:20,942 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:20,942 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:25:20,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:25:20,943 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:20,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:20,943 INFO L85 PathProgramCache]: Analyzing trace with hash -692208150, now seen corresponding path program 1 times [2022-11-02 20:25:20,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:25:20,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918735272] [2022-11-02 20:25:20,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:20,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:25:20,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:21,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:25:21,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:21,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:25:21,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:21,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-02 20:25:21,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:21,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:25:21,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:21,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-02 20:25:21,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:21,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-02 20:25:21,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:21,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-02 20:25:21,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:21,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-02 20:25:21,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:21,118 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 20:25:21,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:25:21,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918735272] [2022-11-02 20:25:21,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918735272] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:21,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:21,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:25:21,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427527054] [2022-11-02 20:25:21,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:21,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:25:21,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:25:21,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:25:21,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:25:21,123 INFO L87 Difference]: Start difference. First operand 1731 states and 2269 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-02 20:25:21,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:21,692 INFO L93 Difference]: Finished difference Result 3307 states and 4329 transitions. [2022-11-02 20:25:21,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:25:21,693 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 91 [2022-11-02 20:25:21,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:21,705 INFO L225 Difference]: With dead ends: 3307 [2022-11-02 20:25:21,706 INFO L226 Difference]: Without dead ends: 1838 [2022-11-02 20:25:21,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:25:21,714 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 1144 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1173 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:21,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1173 Valid, 1203 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:25:21,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1838 states. [2022-11-02 20:25:21,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1838 to 1731. [2022-11-02 20:25:21,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1731 states, 1391 states have (on average 1.3048166786484543) internal successors, (1815), 1411 states have internal predecessors, (1815), 185 states have call successors, (185), 120 states have call predecessors, (185), 153 states have return successors, (233), 201 states have call predecessors, (233), 183 states have call successors, (233) [2022-11-02 20:25:21,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2233 transitions. [2022-11-02 20:25:21,916 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2233 transitions. Word has length 91 [2022-11-02 20:25:21,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:21,916 INFO L495 AbstractCegarLoop]: Abstraction has 1731 states and 2233 transitions. [2022-11-02 20:25:21,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-02 20:25:21,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2233 transitions. [2022-11-02 20:25:21,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-02 20:25:21,919 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:21,919 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:25:21,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:25:21,919 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:21,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:21,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1486977360, now seen corresponding path program 1 times [2022-11-02 20:25:21,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:25:21,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410433578] [2022-11-02 20:25:21,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:21,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:25:21,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:22,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:25:22,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:22,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:25:22,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:22,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-02 20:25:22,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:22,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:25:22,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:22,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-02 20:25:22,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:22,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-02 20:25:22,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:22,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-02 20:25:22,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:22,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-02 20:25:22,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:22,125 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:25:22,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:25:22,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410433578] [2022-11-02 20:25:22,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410433578] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:22,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:22,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:25:22,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804788373] [2022-11-02 20:25:22,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:22,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:25:22,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:25:22,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:25:22,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:25:22,128 INFO L87 Difference]: Start difference. First operand 1731 states and 2233 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-02 20:25:24,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:24,298 INFO L93 Difference]: Finished difference Result 4157 states and 5338 transitions. [2022-11-02 20:25:24,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-02 20:25:24,299 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 92 [2022-11-02 20:25:24,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:24,313 INFO L225 Difference]: With dead ends: 4157 [2022-11-02 20:25:24,313 INFO L226 Difference]: Without dead ends: 2533 [2022-11-02 20:25:24,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2022-11-02 20:25:24,321 INFO L413 NwaCegarLoop]: 595 mSDtfsCounter, 2020 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 1180 mSolverCounterSat, 472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2058 SdHoareTripleChecker+Valid, 1717 SdHoareTripleChecker+Invalid, 1652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 472 IncrementalHoareTripleChecker+Valid, 1180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:24,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2058 Valid, 1717 Invalid, 1652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [472 Valid, 1180 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-02 20:25:24,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2533 states. [2022-11-02 20:25:24,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2533 to 2338. [2022-11-02 20:25:24,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2338 states, 1844 states have (on average 1.2711496746203905) internal successors, (2344), 1879 states have internal predecessors, (2344), 262 states have call successors, (262), 168 states have call predecessors, (262), 230 states have return successors, (366), 292 states have call predecessors, (366), 260 states have call successors, (366) [2022-11-02 20:25:24,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2338 states to 2338 states and 2972 transitions. [2022-11-02 20:25:24,601 INFO L78 Accepts]: Start accepts. Automaton has 2338 states and 2972 transitions. Word has length 92 [2022-11-02 20:25:24,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:24,603 INFO L495 AbstractCegarLoop]: Abstraction has 2338 states and 2972 transitions. [2022-11-02 20:25:24,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-02 20:25:24,603 INFO L276 IsEmpty]: Start isEmpty. Operand 2338 states and 2972 transitions. [2022-11-02 20:25:24,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-02 20:25:24,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:24,606 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:25:24,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:25:24,606 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:24,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:24,607 INFO L85 PathProgramCache]: Analyzing trace with hash 330043274, now seen corresponding path program 1 times [2022-11-02 20:25:24,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:25:24,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818349536] [2022-11-02 20:25:24,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:24,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:25:24,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:24,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:25:24,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:24,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-02 20:25:24,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:24,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-02 20:25:24,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:24,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 20:25:24,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:24,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-02 20:25:24,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:24,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:24,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:25:24,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818349536] [2022-11-02 20:25:24,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818349536] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:24,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:24,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:25:24,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964888140] [2022-11-02 20:25:24,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:24,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:25:24,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:25:24,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:25:24,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:25:24,759 INFO L87 Difference]: Start difference. First operand 2338 states and 2972 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:25:26,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:26,723 INFO L93 Difference]: Finished difference Result 2671 states and 3504 transitions. [2022-11-02 20:25:26,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:25:26,724 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-11-02 20:25:26,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:26,735 INFO L225 Difference]: With dead ends: 2671 [2022-11-02 20:25:26,736 INFO L226 Difference]: Without dead ends: 2425 [2022-11-02 20:25:26,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:25:26,738 INFO L413 NwaCegarLoop]: 569 mSDtfsCounter, 765 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:26,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [784 Valid, 1022 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-02 20:25:26,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2022-11-02 20:25:27,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 2338. [2022-11-02 20:25:27,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2338 states, 1844 states have (on average 1.2706073752711498) internal successors, (2343), 1879 states have internal predecessors, (2343), 262 states have call successors, (262), 168 states have call predecessors, (262), 230 states have return successors, (366), 292 states have call predecessors, (366), 260 states have call successors, (366) [2022-11-02 20:25:27,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2338 states to 2338 states and 2971 transitions. [2022-11-02 20:25:27,162 INFO L78 Accepts]: Start accepts. Automaton has 2338 states and 2971 transitions. Word has length 123 [2022-11-02 20:25:27,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:27,163 INFO L495 AbstractCegarLoop]: Abstraction has 2338 states and 2971 transitions. [2022-11-02 20:25:27,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:25:27,163 INFO L276 IsEmpty]: Start isEmpty. Operand 2338 states and 2971 transitions. [2022-11-02 20:25:27,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-02 20:25:27,166 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:27,166 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:25:27,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 20:25:27,166 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:27,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:27,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1598888952, now seen corresponding path program 1 times [2022-11-02 20:25:27,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:25:27,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254614945] [2022-11-02 20:25:27,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:27,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:25:27,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:27,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:25:27,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:27,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-02 20:25:27,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:27,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-02 20:25:27,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:27,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 20:25:27,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:27,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-02 20:25:27,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:27,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:27,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:25:27,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254614945] [2022-11-02 20:25:27,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254614945] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:27,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:27,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:25:27,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237775210] [2022-11-02 20:25:27,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:27,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:25:27,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:25:27,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:25:27,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:25:27,371 INFO L87 Difference]: Start difference. First operand 2338 states and 2971 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:25:30,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:30,436 INFO L93 Difference]: Finished difference Result 2994 states and 4018 transitions. [2022-11-02 20:25:30,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:25:30,437 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-11-02 20:25:30,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:30,452 INFO L225 Difference]: With dead ends: 2994 [2022-11-02 20:25:30,452 INFO L226 Difference]: Without dead ends: 2757 [2022-11-02 20:25:30,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:25:30,456 INFO L413 NwaCegarLoop]: 620 mSDtfsCounter, 1216 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 1438 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1242 SdHoareTripleChecker+Valid, 1492 SdHoareTripleChecker+Invalid, 1574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 1438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:30,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1242 Valid, 1492 Invalid, 1574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 1438 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-02 20:25:30,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2757 states. [2022-11-02 20:25:30,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2757 to 2584. [2022-11-02 20:25:30,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2584 states, 2067 states have (on average 1.3033381712626995) internal successors, (2694), 2103 states have internal predecessors, (2694), 278 states have call successors, (278), 174 states have call predecessors, (278), 237 states have return successors, (385), 308 states have call predecessors, (385), 276 states have call successors, (385) [2022-11-02 20:25:30,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2584 states to 2584 states and 3357 transitions. [2022-11-02 20:25:30,922 INFO L78 Accepts]: Start accepts. Automaton has 2584 states and 3357 transitions. Word has length 123 [2022-11-02 20:25:30,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:30,923 INFO L495 AbstractCegarLoop]: Abstraction has 2584 states and 3357 transitions. [2022-11-02 20:25:30,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:25:30,924 INFO L276 IsEmpty]: Start isEmpty. Operand 2584 states and 3357 transitions. [2022-11-02 20:25:30,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-02 20:25:30,927 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:30,927 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:25:30,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 20:25:30,928 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:30,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:30,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1970514316, now seen corresponding path program 1 times [2022-11-02 20:25:30,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:25:30,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182664182] [2022-11-02 20:25:30,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:30,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:25:30,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:31,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:25:31,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:31,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-02 20:25:31,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:31,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-02 20:25:31,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:31,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 20:25:31,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:31,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-02 20:25:31,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:31,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:31,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:25:31,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182664182] [2022-11-02 20:25:31,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182664182] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:31,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:31,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:25:31,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118183512] [2022-11-02 20:25:31,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:31,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:25:31,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:25:31,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:25:31,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:25:31,203 INFO L87 Difference]: Start difference. First operand 2584 states and 3357 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:25:34,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:34,903 INFO L93 Difference]: Finished difference Result 3582 states and 4947 transitions. [2022-11-02 20:25:34,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:25:34,904 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-11-02 20:25:34,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:34,918 INFO L225 Difference]: With dead ends: 3582 [2022-11-02 20:25:34,918 INFO L226 Difference]: Without dead ends: 3099 [2022-11-02 20:25:34,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:25:34,922 INFO L413 NwaCegarLoop]: 778 mSDtfsCounter, 1226 mSDsluCounter, 1472 mSDsCounter, 0 mSdLazyCounter, 2200 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1252 SdHoareTripleChecker+Valid, 2250 SdHoareTripleChecker+Invalid, 2306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:34,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1252 Valid, 2250 Invalid, 2306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 2200 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-02 20:25:34,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3099 states. [2022-11-02 20:25:35,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3099 to 2813. [2022-11-02 20:25:35,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2813 states, 2273 states have (on average 1.3246810382754068) internal successors, (3011), 2310 states have internal predecessors, (3011), 294 states have call successors, (294), 180 states have call predecessors, (294), 244 states have return successors, (403), 325 states have call predecessors, (403), 292 states have call successors, (403) [2022-11-02 20:25:35,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2813 states to 2813 states and 3708 transitions. [2022-11-02 20:25:35,391 INFO L78 Accepts]: Start accepts. Automaton has 2813 states and 3708 transitions. Word has length 123 [2022-11-02 20:25:35,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:35,392 INFO L495 AbstractCegarLoop]: Abstraction has 2813 states and 3708 transitions. [2022-11-02 20:25:35,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:25:35,392 INFO L276 IsEmpty]: Start isEmpty. Operand 2813 states and 3708 transitions. [2022-11-02 20:25:35,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-02 20:25:35,395 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:35,395 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:25:35,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 20:25:35,396 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:35,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:35,397 INFO L85 PathProgramCache]: Analyzing trace with hash -935158966, now seen corresponding path program 1 times [2022-11-02 20:25:35,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:25:35,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953028372] [2022-11-02 20:25:35,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:35,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:25:35,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:35,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:25:35,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:35,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-02 20:25:35,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:35,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-02 20:25:35,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:35,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 20:25:35,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:35,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-02 20:25:35,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:35,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:35,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:25:35,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953028372] [2022-11-02 20:25:35,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953028372] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:35,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:35,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:25:35,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026588152] [2022-11-02 20:25:35,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:35,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:25:35,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:25:35,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:25:35,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:25:35,668 INFO L87 Difference]: Start difference. First operand 2813 states and 3708 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:25:39,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:39,127 INFO L93 Difference]: Finished difference Result 4448 states and 6306 transitions. [2022-11-02 20:25:39,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:25:39,128 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-11-02 20:25:39,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:39,146 INFO L225 Difference]: With dead ends: 4448 [2022-11-02 20:25:39,146 INFO L226 Difference]: Without dead ends: 3736 [2022-11-02 20:25:39,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:25:39,151 INFO L413 NwaCegarLoop]: 613 mSDtfsCounter, 1295 mSDsluCounter, 1064 mSDsCounter, 0 mSdLazyCounter, 1982 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1321 SdHoareTripleChecker+Valid, 1677 SdHoareTripleChecker+Invalid, 2117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:39,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1321 Valid, 1677 Invalid, 2117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1982 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-02 20:25:39,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3736 states. [2022-11-02 20:25:39,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3736 to 3272. [2022-11-02 20:25:39,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3272 states, 2686 states have (on average 1.3574087862993298) internal successors, (3646), 2725 states have internal predecessors, (3646), 326 states have call successors, (326), 192 states have call predecessors, (326), 258 states have return successors, (443), 359 states have call predecessors, (443), 324 states have call successors, (443) [2022-11-02 20:25:39,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3272 states to 3272 states and 4415 transitions. [2022-11-02 20:25:39,723 INFO L78 Accepts]: Start accepts. Automaton has 3272 states and 4415 transitions. Word has length 123 [2022-11-02 20:25:39,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:39,724 INFO L495 AbstractCegarLoop]: Abstraction has 3272 states and 4415 transitions. [2022-11-02 20:25:39,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:25:39,725 INFO L276 IsEmpty]: Start isEmpty. Operand 3272 states and 4415 transitions. [2022-11-02 20:25:39,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-02 20:25:39,728 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:39,729 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:25:39,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 20:25:39,729 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:39,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:39,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1326414284, now seen corresponding path program 1 times [2022-11-02 20:25:39,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:25:39,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789575831] [2022-11-02 20:25:39,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:39,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:25:39,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:39,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:25:39,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:39,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-02 20:25:39,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:39,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-02 20:25:39,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:39,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 20:25:39,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:39,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-02 20:25:39,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:40,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:40,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:25:40,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789575831] [2022-11-02 20:25:40,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789575831] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:40,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:40,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:25:40,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533724355] [2022-11-02 20:25:40,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:40,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:25:40,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:25:40,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:25:40,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:25:40,005 INFO L87 Difference]: Start difference. First operand 3272 states and 4415 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:25:43,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:43,941 INFO L93 Difference]: Finished difference Result 6115 states and 8909 transitions. [2022-11-02 20:25:43,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:25:43,942 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-11-02 20:25:43,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:43,968 INFO L225 Difference]: With dead ends: 6115 [2022-11-02 20:25:43,969 INFO L226 Difference]: Without dead ends: 4944 [2022-11-02 20:25:43,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:25:43,975 INFO L413 NwaCegarLoop]: 766 mSDtfsCounter, 1221 mSDsluCounter, 1472 mSDsCounter, 0 mSdLazyCounter, 2199 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1247 SdHoareTripleChecker+Valid, 2238 SdHoareTripleChecker+Invalid, 2310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 2199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:43,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1247 Valid, 2238 Invalid, 2310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 2199 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-02 20:25:43,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4944 states. [2022-11-02 20:25:44,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4944 to 4191. [2022-11-02 20:25:44,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4191 states, 3513 states have (on average 1.3993737546256761) internal successors, (4916), 3556 states have internal predecessors, (4916), 390 states have call successors, (390), 216 states have call predecessors, (390), 286 states have return successors, (529), 427 states have call predecessors, (529), 388 states have call successors, (529) [2022-11-02 20:25:44,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4191 states to 4191 states and 5835 transitions. [2022-11-02 20:25:44,731 INFO L78 Accepts]: Start accepts. Automaton has 4191 states and 5835 transitions. Word has length 123 [2022-11-02 20:25:44,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:44,732 INFO L495 AbstractCegarLoop]: Abstraction has 4191 states and 5835 transitions. [2022-11-02 20:25:44,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:25:44,732 INFO L276 IsEmpty]: Start isEmpty. Operand 4191 states and 5835 transitions. [2022-11-02 20:25:44,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-02 20:25:44,736 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:44,736 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:25:44,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-02 20:25:44,737 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:44,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:44,738 INFO L85 PathProgramCache]: Analyzing trace with hash -540294390, now seen corresponding path program 1 times [2022-11-02 20:25:44,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:25:44,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921659514] [2022-11-02 20:25:44,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:44,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:25:44,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:44,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:25:44,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:44,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-02 20:25:44,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:44,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-02 20:25:44,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:44,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 20:25:44,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:44,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-02 20:25:44,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:44,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:44,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:25:44,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921659514] [2022-11-02 20:25:44,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921659514] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:44,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:44,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:25:44,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379070130] [2022-11-02 20:25:44,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:44,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:25:44,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:25:44,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:25:44,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:25:44,972 INFO L87 Difference]: Start difference. First operand 4191 states and 5835 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:25:47,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:47,599 INFO L93 Difference]: Finished difference Result 7039 states and 10364 transitions. [2022-11-02 20:25:47,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:25:47,599 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-11-02 20:25:47,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:47,622 INFO L225 Difference]: With dead ends: 7039 [2022-11-02 20:25:47,623 INFO L226 Difference]: Without dead ends: 4949 [2022-11-02 20:25:47,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:25:47,632 INFO L413 NwaCegarLoop]: 529 mSDtfsCounter, 949 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 1380 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:47,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 1380 Invalid, 1190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1075 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-02 20:25:47,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4949 states. [2022-11-02 20:25:48,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4949 to 4191. [2022-11-02 20:25:48,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4191 states, 3513 states have (on average 1.3968118417307145) internal successors, (4907), 3556 states have internal predecessors, (4907), 390 states have call successors, (390), 216 states have call predecessors, (390), 286 states have return successors, (529), 427 states have call predecessors, (529), 388 states have call successors, (529) [2022-11-02 20:25:48,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4191 states to 4191 states and 5826 transitions. [2022-11-02 20:25:48,449 INFO L78 Accepts]: Start accepts. Automaton has 4191 states and 5826 transitions. Word has length 123 [2022-11-02 20:25:48,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:48,450 INFO L495 AbstractCegarLoop]: Abstraction has 4191 states and 5826 transitions. [2022-11-02 20:25:48,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:25:48,451 INFO L276 IsEmpty]: Start isEmpty. Operand 4191 states and 5826 transitions. [2022-11-02 20:25:48,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-02 20:25:48,455 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:48,455 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:25:48,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-02 20:25:48,456 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:48,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:48,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1357202376, now seen corresponding path program 1 times [2022-11-02 20:25:48,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:25:48,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496653926] [2022-11-02 20:25:48,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:48,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:25:48,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:48,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:25:48,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:48,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-02 20:25:48,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:48,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-02 20:25:48,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:48,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 20:25:48,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:48,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-02 20:25:48,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:48,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:48,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:25:48,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496653926] [2022-11-02 20:25:48,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496653926] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:48,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:48,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:25:48,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917947832] [2022-11-02 20:25:48,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:48,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:25:48,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:25:48,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:25:48,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:25:48,666 INFO L87 Difference]: Start difference. First operand 4191 states and 5826 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:25:51,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:51,066 INFO L93 Difference]: Finished difference Result 7029 states and 10317 transitions. [2022-11-02 20:25:51,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:25:51,067 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-11-02 20:25:51,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:51,087 INFO L225 Difference]: With dead ends: 7029 [2022-11-02 20:25:51,087 INFO L226 Difference]: Without dead ends: 4939 [2022-11-02 20:25:51,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:25:51,095 INFO L413 NwaCegarLoop]: 525 mSDtfsCounter, 1108 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1135 SdHoareTripleChecker+Valid, 1187 SdHoareTripleChecker+Invalid, 1099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:51,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1135 Valid, 1187 Invalid, 1099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-02 20:25:51,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4939 states. [2022-11-02 20:25:51,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4939 to 4191. [2022-11-02 20:25:51,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4191 states, 3513 states have (on average 1.3942499288357528) internal successors, (4898), 3556 states have internal predecessors, (4898), 390 states have call successors, (390), 216 states have call predecessors, (390), 286 states have return successors, (529), 427 states have call predecessors, (529), 388 states have call successors, (529) [2022-11-02 20:25:51,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4191 states to 4191 states and 5817 transitions. [2022-11-02 20:25:51,739 INFO L78 Accepts]: Start accepts. Automaton has 4191 states and 5817 transitions. Word has length 123 [2022-11-02 20:25:51,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:51,739 INFO L495 AbstractCegarLoop]: Abstraction has 4191 states and 5817 transitions. [2022-11-02 20:25:51,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:25:51,740 INFO L276 IsEmpty]: Start isEmpty. Operand 4191 states and 5817 transitions. [2022-11-02 20:25:51,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-02 20:25:51,744 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:51,744 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:25:51,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-02 20:25:51,745 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:51,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:51,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1906724022, now seen corresponding path program 1 times [2022-11-02 20:25:51,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:25:51,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129387901] [2022-11-02 20:25:51,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:51,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:25:51,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:51,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:25:51,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:51,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-02 20:25:51,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:51,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-02 20:25:51,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:51,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 20:25:51,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:51,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-02 20:25:51,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:51,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:51,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:25:51,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129387901] [2022-11-02 20:25:51,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129387901] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:51,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:51,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:25:51,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476472231] [2022-11-02 20:25:51,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:51,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:25:51,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:25:51,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:25:51,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:25:51,963 INFO L87 Difference]: Start difference. First operand 4191 states and 5817 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:25:54,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:54,650 INFO L93 Difference]: Finished difference Result 7019 states and 10270 transitions. [2022-11-02 20:25:54,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:25:54,650 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-11-02 20:25:54,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:54,670 INFO L225 Difference]: With dead ends: 7019 [2022-11-02 20:25:54,671 INFO L226 Difference]: Without dead ends: 4929 [2022-11-02 20:25:54,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:25:54,679 INFO L413 NwaCegarLoop]: 521 mSDtfsCounter, 945 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 1051 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 1372 SdHoareTripleChecker+Invalid, 1166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:54,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 1372 Invalid, 1166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1051 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-02 20:25:54,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4929 states. [2022-11-02 20:25:55,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4929 to 4191. [2022-11-02 20:25:55,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4191 states, 3513 states have (on average 1.3916880159407914) internal successors, (4889), 3556 states have internal predecessors, (4889), 390 states have call successors, (390), 216 states have call predecessors, (390), 286 states have return successors, (529), 427 states have call predecessors, (529), 388 states have call successors, (529) [2022-11-02 20:25:55,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4191 states to 4191 states and 5808 transitions. [2022-11-02 20:25:55,269 INFO L78 Accepts]: Start accepts. Automaton has 4191 states and 5808 transitions. Word has length 123 [2022-11-02 20:25:55,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:55,270 INFO L495 AbstractCegarLoop]: Abstraction has 4191 states and 5808 transitions. [2022-11-02 20:25:55,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:25:55,270 INFO L276 IsEmpty]: Start isEmpty. Operand 4191 states and 5808 transitions. [2022-11-02 20:25:55,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-02 20:25:55,274 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:55,275 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:25:55,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-02 20:25:55,275 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:55,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:55,276 INFO L85 PathProgramCache]: Analyzing trace with hash 481840008, now seen corresponding path program 1 times [2022-11-02 20:25:55,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:25:55,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846271314] [2022-11-02 20:25:55,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:55,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:25:55,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:55,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:25:55,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:55,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-02 20:25:55,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:55,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-02 20:25:55,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:55,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 20:25:55,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:55,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-02 20:25:55,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:55,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:55,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:25:55,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846271314] [2022-11-02 20:25:55,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846271314] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:55,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:55,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:25:55,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118708121] [2022-11-02 20:25:55,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:55,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:25:55,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:25:55,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:25:55,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:25:55,496 INFO L87 Difference]: Start difference. First operand 4191 states and 5808 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:26:00,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:26:00,680 INFO L93 Difference]: Finished difference Result 10267 states and 15225 transitions. [2022-11-02 20:26:00,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:26:00,681 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-11-02 20:26:00,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:26:00,711 INFO L225 Difference]: With dead ends: 10267 [2022-11-02 20:26:00,711 INFO L226 Difference]: Without dead ends: 8177 [2022-11-02 20:26:00,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:26:00,721 INFO L413 NwaCegarLoop]: 858 mSDtfsCounter, 1268 mSDsluCounter, 1464 mSDsCounter, 0 mSdLazyCounter, 2466 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1293 SdHoareTripleChecker+Valid, 2322 SdHoareTripleChecker+Invalid, 2580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 2466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:26:00,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1293 Valid, 2322 Invalid, 2580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 2466 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-02 20:26:00,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8177 states. [2022-11-02 20:26:01,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8177 to 6046. [2022-11-02 20:26:01,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6046 states, 5192 states have (on average 1.4335516178736518) internal successors, (7443), 5243 states have internal predecessors, (7443), 510 states have call successors, (510), 264 states have call predecessors, (510), 342 states have return successors, (711), 555 states have call predecessors, (711), 508 states have call successors, (711) [2022-11-02 20:26:02,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6046 states to 6046 states and 8664 transitions. [2022-11-02 20:26:02,016 INFO L78 Accepts]: Start accepts. Automaton has 6046 states and 8664 transitions. Word has length 123 [2022-11-02 20:26:02,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:26:02,017 INFO L495 AbstractCegarLoop]: Abstraction has 6046 states and 8664 transitions. [2022-11-02 20:26:02,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:26:02,017 INFO L276 IsEmpty]: Start isEmpty. Operand 6046 states and 8664 transitions. [2022-11-02 20:26:02,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-02 20:26:02,023 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:26:02,023 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:26:02,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-02 20:26:02,023 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:26:02,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:26:02,024 INFO L85 PathProgramCache]: Analyzing trace with hash 2082911114, now seen corresponding path program 1 times [2022-11-02 20:26:02,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:26:02,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853513439] [2022-11-02 20:26:02,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:26:02,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:26:02,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:02,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:26:02,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:02,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-02 20:26:02,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:02,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-02 20:26:02,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:02,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 20:26:02,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:02,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-02 20:26:02,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:02,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:26:02,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:26:02,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853513439] [2022-11-02 20:26:02,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853513439] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:26:02,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:26:02,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:26:02,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706453175] [2022-11-02 20:26:02,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:26:02,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:26:02,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:26:02,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:26:02,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:26:02,250 INFO L87 Difference]: Start difference. First operand 6046 states and 8664 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:26:08,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:26:08,127 INFO L93 Difference]: Finished difference Result 17532 states and 26495 transitions. [2022-11-02 20:26:08,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:26:08,128 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-11-02 20:26:08,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:26:08,181 INFO L225 Difference]: With dead ends: 17532 [2022-11-02 20:26:08,182 INFO L226 Difference]: Without dead ends: 13587 [2022-11-02 20:26:08,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:26:08,199 INFO L413 NwaCegarLoop]: 732 mSDtfsCounter, 1445 mSDsluCounter, 1461 mSDsCounter, 0 mSdLazyCounter, 2106 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1479 SdHoareTripleChecker+Valid, 2193 SdHoareTripleChecker+Invalid, 2223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 2106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:26:08,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1479 Valid, 2193 Invalid, 2223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 2106 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-02 20:26:08,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13587 states. [2022-11-02 20:26:09,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13587 to 9659. [2022-11-02 20:26:09,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9659 states, 8461 states have (on average 1.4670842689989363) internal successors, (12413), 8528 states have internal predecessors, (12413), 742 states have call successors, (742), 360 states have call predecessors, (742), 454 states have return successors, (1121), 803 states have call predecessors, (1121), 740 states have call successors, (1121) [2022-11-02 20:26:09,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9659 states to 9659 states and 14276 transitions. [2022-11-02 20:26:09,701 INFO L78 Accepts]: Start accepts. Automaton has 9659 states and 14276 transitions. Word has length 123 [2022-11-02 20:26:09,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:26:09,701 INFO L495 AbstractCegarLoop]: Abstraction has 9659 states and 14276 transitions. [2022-11-02 20:26:09,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:26:09,701 INFO L276 IsEmpty]: Start isEmpty. Operand 9659 states and 14276 transitions. [2022-11-02 20:26:09,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-02 20:26:09,708 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:26:09,708 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:26:09,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-02 20:26:09,708 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:26:09,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:26:09,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1026179912, now seen corresponding path program 1 times [2022-11-02 20:26:09,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:26:09,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577204642] [2022-11-02 20:26:09,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:26:09,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:26:09,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:09,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:26:09,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:09,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-02 20:26:09,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:09,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-02 20:26:09,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:09,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 20:26:09,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:09,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-02 20:26:09,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:09,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:26:09,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:26:09,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577204642] [2022-11-02 20:26:09,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577204642] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:26:09,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:26:09,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:26:09,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661678968] [2022-11-02 20:26:09,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:26:09,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:26:09,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:26:09,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:26:09,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:26:09,896 INFO L87 Difference]: Start difference. First operand 9659 states and 14276 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:26:16,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:26:16,573 INFO L93 Difference]: Finished difference Result 31519 states and 48365 transitions. [2022-11-02 20:26:16,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:26:16,574 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-11-02 20:26:16,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:26:16,652 INFO L225 Difference]: With dead ends: 31519 [2022-11-02 20:26:16,652 INFO L226 Difference]: Without dead ends: 23961 [2022-11-02 20:26:16,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:26:16,680 INFO L413 NwaCegarLoop]: 677 mSDtfsCounter, 1306 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 2199 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1331 SdHoareTripleChecker+Valid, 1737 SdHoareTripleChecker+Invalid, 2337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 2199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:26:16,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1331 Valid, 1737 Invalid, 2337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 2199 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-02 20:26:16,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23961 states. [2022-11-02 20:26:18,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23961 to 16948. [2022-11-02 20:26:18,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16948 states, 15078 states have (on average 1.4919087412123624) internal successors, (22495), 15177 states have internal predecessors, (22495), 1190 states have call successors, (1190), 552 states have call predecessors, (1190), 678 states have return successors, (2087), 1283 states have call predecessors, (2087), 1188 states have call successors, (2087) [2022-11-02 20:26:19,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16948 states to 16948 states and 25772 transitions. [2022-11-02 20:26:19,075 INFO L78 Accepts]: Start accepts. Automaton has 16948 states and 25772 transitions. Word has length 123 [2022-11-02 20:26:19,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:26:19,075 INFO L495 AbstractCegarLoop]: Abstraction has 16948 states and 25772 transitions. [2022-11-02 20:26:19,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:26:19,076 INFO L276 IsEmpty]: Start isEmpty. Operand 16948 states and 25772 transitions. [2022-11-02 20:26:19,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-02 20:26:19,084 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:26:19,085 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:26:19,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-02 20:26:19,085 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:26:19,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:26:19,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1917402166, now seen corresponding path program 1 times [2022-11-02 20:26:19,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:26:19,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122746437] [2022-11-02 20:26:19,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:26:19,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:26:19,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:19,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:26:19,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:19,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-02 20:26:19,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:19,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-02 20:26:19,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:19,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 20:26:19,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:19,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-02 20:26:19,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:19,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:26:19,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:26:19,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122746437] [2022-11-02 20:26:19,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122746437] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:26:19,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:26:19,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:26:19,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623480886] [2022-11-02 20:26:19,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:26:19,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:26:19,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:26:19,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:26:19,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:26:19,287 INFO L87 Difference]: Start difference. First operand 16948 states and 25772 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:26:29,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:26:29,565 INFO L93 Difference]: Finished difference Result 59110 states and 92163 transitions. [2022-11-02 20:26:29,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:26:29,568 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-11-02 20:26:29,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:26:29,739 INFO L225 Difference]: With dead ends: 59110 [2022-11-02 20:26:29,739 INFO L226 Difference]: Without dead ends: 44263 [2022-11-02 20:26:29,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:26:29,786 INFO L413 NwaCegarLoop]: 721 mSDtfsCounter, 1369 mSDsluCounter, 1464 mSDsCounter, 0 mSdLazyCounter, 2088 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1403 SdHoareTripleChecker+Valid, 2185 SdHoareTripleChecker+Invalid, 2208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:26:29,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1403 Valid, 2185 Invalid, 2208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 2088 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-02 20:26:29,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44263 states. [2022-11-02 20:26:34,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44263 to 31493. [2022-11-02 20:26:34,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31493 states, 28311 states have (on average 1.5078591360248668) internal successors, (42689), 28474 states have internal predecessors, (42689), 2054 states have call successors, (2054), 936 states have call predecessors, (2054), 1126 states have return successors, (4473), 2211 states have call predecessors, (4473), 2052 states have call successors, (4473) [2022-11-02 20:26:34,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31493 states to 31493 states and 49216 transitions. [2022-11-02 20:26:34,887 INFO L78 Accepts]: Start accepts. Automaton has 31493 states and 49216 transitions. Word has length 123 [2022-11-02 20:26:34,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:26:34,888 INFO L495 AbstractCegarLoop]: Abstraction has 31493 states and 49216 transitions. [2022-11-02 20:26:34,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:26:34,888 INFO L276 IsEmpty]: Start isEmpty. Operand 31493 states and 49216 transitions. [2022-11-02 20:26:34,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-02 20:26:34,906 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:26:34,906 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:26:34,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-02 20:26:34,907 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:26:34,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:26:34,908 INFO L85 PathProgramCache]: Analyzing trace with hash 758590216, now seen corresponding path program 1 times [2022-11-02 20:26:34,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:26:34,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4120232] [2022-11-02 20:26:34,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:26:34,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:26:34,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:34,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:26:34,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:35,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-02 20:26:35,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:35,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-02 20:26:35,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:35,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 20:26:35,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:35,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-02 20:26:35,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:35,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:26:35,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:26:35,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4120232] [2022-11-02 20:26:35,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4120232] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:26:35,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:26:35,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:26:35,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363721281] [2022-11-02 20:26:35,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:26:35,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:26:35,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:26:35,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:26:35,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:26:35,219 INFO L87 Difference]: Start difference. First operand 31493 states and 49216 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:26:43,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:26:43,574 INFO L93 Difference]: Finished difference Result 69211 states and 110899 transitions. [2022-11-02 20:26:43,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:26:43,576 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-11-02 20:26:43,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:26:43,736 INFO L225 Difference]: With dead ends: 69211 [2022-11-02 20:26:43,737 INFO L226 Difference]: Without dead ends: 39819 [2022-11-02 20:26:43,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:26:43,810 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 946 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 973 SdHoareTripleChecker+Valid, 1350 SdHoareTripleChecker+Invalid, 1124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:26:43,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [973 Valid, 1350 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1004 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-02 20:26:43,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39819 states. [2022-11-02 20:26:49,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39819 to 31493. [2022-11-02 20:26:49,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31493 states, 28311 states have (on average 1.5033026032284271) internal successors, (42560), 28474 states have internal predecessors, (42560), 2054 states have call successors, (2054), 936 states have call predecessors, (2054), 1126 states have return successors, (4473), 2211 states have call predecessors, (4473), 2052 states have call successors, (4473) [2022-11-02 20:26:49,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31493 states to 31493 states and 49087 transitions. [2022-11-02 20:26:49,506 INFO L78 Accepts]: Start accepts. Automaton has 31493 states and 49087 transitions. Word has length 123 [2022-11-02 20:26:49,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:26:49,506 INFO L495 AbstractCegarLoop]: Abstraction has 31493 states and 49087 transitions. [2022-11-02 20:26:49,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-02 20:26:49,506 INFO L276 IsEmpty]: Start isEmpty. Operand 31493 states and 49087 transitions. [2022-11-02 20:26:49,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-02 20:26:49,524 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:26:49,525 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:26:49,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-02 20:26:49,525 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:26:49,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:26:49,526 INFO L85 PathProgramCache]: Analyzing trace with hash 730089926, now seen corresponding path program 1 times [2022-11-02 20:26:49,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:26:49,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172278379] [2022-11-02 20:26:49,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:26:49,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:26:49,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:49,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 20:26:49,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:49,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-02 20:26:49,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:49,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-02 20:26:49,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:49,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 20:26:49,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:49,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-02 20:26:49,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:49,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:26:49,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:26:49,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172278379] [2022-11-02 20:26:49,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172278379] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:26:49,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:26:49,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:26:49,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338433001] [2022-11-02 20:26:49,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:26:49,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:26:49,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:26:49,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:26:49,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:26:49,702 INFO L87 Difference]: Start difference. First operand 31493 states and 49087 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)