./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.2.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.2.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5c227f1dec7d604552aae19de1afcc1049837e83568477af6195219b22e2f636 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:24:58,644 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:24:58,646 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:24:58,676 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:24:58,676 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:24:58,677 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:24:58,679 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:24:58,681 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:24:58,688 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:24:58,694 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:24:58,696 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:24:58,699 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:24:58,699 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:24:58,701 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:24:58,702 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:24:58,703 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:24:58,704 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:24:58,704 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:24:58,706 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:24:58,707 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:24:58,709 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:24:58,715 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:24:58,717 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:24:58,718 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:24:58,730 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:24:58,731 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:24:58,731 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:24:58,732 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:24:58,732 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:24:58,733 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:24:58,733 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:24:58,734 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:24:58,735 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:24:58,735 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:24:58,736 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:24:58,736 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:24:58,737 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:24:58,737 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:24:58,738 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:24:58,738 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:24:58,739 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:24:58,744 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:24:58,780 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:24:58,781 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:24:58,781 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:24:58,781 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:24:58,782 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:24:58,782 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:24:58,785 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:24:58,786 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:24:58,786 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:24:58,786 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:24:58,787 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:24:58,787 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:24:58,788 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:24:58,788 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:24:58,788 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:24:58,788 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:24:58,788 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:24:58,788 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:24:58,789 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:24:58,789 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:24:58,789 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:24:58,789 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:24:58,789 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:24:58,790 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:24:58,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:24:58,790 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:24:58,791 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:24:58,791 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:24:58,791 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:24:58,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:24:58,791 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:24:58,792 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:24:58,792 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:24:58,792 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_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c227f1dec7d604552aae19de1afcc1049837e83568477af6195219b22e2f636 [2022-11-20 11:24:59,063 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:24:59,102 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:24:59,104 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:24:59,105 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:24:59,106 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:24:59,107 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.2.ufo.UNBOUNDED.pals.c [2022-11-20 11:25:02,183 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:25:02,499 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:25:02,500 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.2.ufo.UNBOUNDED.pals.c [2022-11-20 11:25:02,509 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/data/37cfebbf7/1fe4e90a48114fb8beb5220fcaeb935f/FLAG2e2548507 [2022-11-20 11:25:02,524 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/data/37cfebbf7/1fe4e90a48114fb8beb5220fcaeb935f [2022-11-20 11:25:02,527 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:25:02,528 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:25:02,530 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:25:02,530 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:25:02,534 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:25:02,535 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:25:02" (1/1) ... [2022-11-20 11:25:02,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48a13c0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:25:02, skipping insertion in model container [2022-11-20 11:25:02,536 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:25:02" (1/1) ... [2022-11-20 11:25:02,544 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:25:02,572 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:25:02,786 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.2.ufo.UNBOUNDED.pals.c[11921,11934] [2022-11-20 11:25:02,790 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:25:02,801 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:25:02,900 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.2.ufo.UNBOUNDED.pals.c[11921,11934] [2022-11-20 11:25:02,901 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:25:02,924 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:25:02,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:25:02 WrapperNode [2022-11-20 11:25:02,925 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:25:02,927 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:25:02,927 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:25:02,927 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:25:02,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:25:02" (1/1) ... [2022-11-20 11:25:02,961 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:25:02" (1/1) ... [2022-11-20 11:25:03,008 INFO L138 Inliner]: procedures = 28, calls = 51, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 378 [2022-11-20 11:25:03,015 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:25:03,016 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:25:03,016 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:25:03,016 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:25:03,026 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:25:02" (1/1) ... [2022-11-20 11:25:03,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:25:02" (1/1) ... [2022-11-20 11:25:03,041 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:25:02" (1/1) ... [2022-11-20 11:25:03,048 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:25:02" (1/1) ... [2022-11-20 11:25:03,055 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:25:02" (1/1) ... [2022-11-20 11:25:03,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:25:02" (1/1) ... [2022-11-20 11:25:03,077 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:25:02" (1/1) ... [2022-11-20 11:25:03,079 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:25:02" (1/1) ... [2022-11-20 11:25:03,091 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:25:03,092 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:25:03,093 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:25:03,093 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:25:03,094 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:25:02" (1/1) ... [2022-11-20 11:25:03,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:25:03,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:25:03,136 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:25:03,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:25:03,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:25:03,183 INFO L130 BoogieDeclarations]: Found specification of procedure write_history_bool [2022-11-20 11:25:03,183 INFO L138 BoogieDeclarations]: Found implementation of procedure write_history_bool [2022-11-20 11:25:03,183 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-11-20 11:25:03,184 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-11-20 11:25:03,184 INFO L130 BoogieDeclarations]: Found specification of procedure read_history_int8 [2022-11-20 11:25:03,184 INFO L138 BoogieDeclarations]: Found implementation of procedure read_history_int8 [2022-11-20 11:25:03,185 INFO L130 BoogieDeclarations]: Found specification of procedure read_history_bool [2022-11-20 11:25:03,186 INFO L138 BoogieDeclarations]: Found implementation of procedure read_history_bool [2022-11-20 11:25:03,186 INFO L130 BoogieDeclarations]: Found specification of procedure add_history_type [2022-11-20 11:25:03,187 INFO L138 BoogieDeclarations]: Found implementation of procedure add_history_type [2022-11-20 11:25:03,187 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 11:25:03,187 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 11:25:03,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:25:03,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:25:03,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:25:03,356 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:25:03,358 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:25:03,957 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:25:03,982 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:25:03,983 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 11:25:03,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:25:03 BoogieIcfgContainer [2022-11-20 11:25:03,997 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:25:04,000 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:25:04,000 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:25:04,004 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:25:04,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:25:02" (1/3) ... [2022-11-20 11:25:04,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63ebd99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:25:04, skipping insertion in model container [2022-11-20 11:25:04,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:25:02" (2/3) ... [2022-11-20 11:25:04,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63ebd99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:25:04, skipping insertion in model container [2022-11-20 11:25:04,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:25:03" (3/3) ... [2022-11-20 11:25:04,010 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_Triplicated.2.ufo.UNBOUNDED.pals.c [2022-11-20 11:25:04,041 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:25:04,041 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:25:04,115 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:25:04,124 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;@7f4e8390, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:25:04,124 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 11:25:04,130 INFO L276 IsEmpty]: Start isEmpty. Operand has 177 states, 132 states have (on average 1.5833333333333333) internal successors, (209), 137 states have internal predecessors, (209), 37 states have call successors, (37), 6 states have call predecessors, (37), 6 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-11-20 11:25:04,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-20 11:25:04,142 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:25:04,143 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:04,143 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:25:04,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:04,150 INFO L85 PathProgramCache]: Analyzing trace with hash 559867366, now seen corresponding path program 1 times [2022-11-20 11:25:04,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:04,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267093681] [2022-11-20 11:25:04,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:04,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:04,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:04,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:25:04,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:04,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267093681] [2022-11-20 11:25:04,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267093681] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:04,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:04,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:25:04,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308761145] [2022-11-20 11:25:04,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:04,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:25:04,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:04,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:25:04,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:25:04,527 INFO L87 Difference]: Start difference. First operand has 177 states, 132 states have (on average 1.5833333333333333) internal successors, (209), 137 states have internal predecessors, (209), 37 states have call successors, (37), 6 states have call predecessors, (37), 6 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:04,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:25:04,745 INFO L93 Difference]: Finished difference Result 355 states and 611 transitions. [2022-11-20 11:25:04,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:25:04,755 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-20 11:25:04,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:25:04,771 INFO L225 Difference]: With dead ends: 355 [2022-11-20 11:25:04,771 INFO L226 Difference]: Without dead ends: 181 [2022-11-20 11:25:04,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:25:04,787 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 18 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:25:04,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 793 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:25:04,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-11-20 11:25:04,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 179. [2022-11-20 11:25:04,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 134 states have (on average 1.5522388059701493) internal successors, (208), 138 states have internal predecessors, (208), 37 states have call successors, (37), 7 states have call predecessors, (37), 7 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-11-20 11:25:04,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 282 transitions. [2022-11-20 11:25:04,895 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 282 transitions. Word has length 15 [2022-11-20 11:25:04,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:25:04,897 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 282 transitions. [2022-11-20 11:25:04,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:04,898 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 282 transitions. [2022-11-20 11:25:04,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 11:25:04,902 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:25:04,902 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:04,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:25:04,904 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:25:04,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:04,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1518249102, now seen corresponding path program 1 times [2022-11-20 11:25:04,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:04,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872000379] [2022-11-20 11:25:04,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:04,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:04,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:05,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:25:05,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:05,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872000379] [2022-11-20 11:25:05,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872000379] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:05,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:05,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:25:05,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582126469] [2022-11-20 11:25:05,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:05,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:25:05,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:05,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:25:05,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:25:05,070 INFO L87 Difference]: Start difference. First operand 179 states and 282 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:05,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:25:05,191 INFO L93 Difference]: Finished difference Result 371 states and 587 transitions. [2022-11-20 11:25:05,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:25:05,192 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-20 11:25:05,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:25:05,195 INFO L225 Difference]: With dead ends: 371 [2022-11-20 11:25:05,196 INFO L226 Difference]: Without dead ends: 195 [2022-11-20 11:25:05,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:25:05,201 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 25 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:25:05,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 814 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:25:05,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-11-20 11:25:05,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 192. [2022-11-20 11:25:05,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 145 states have (on average 1.5310344827586206) internal successors, (222), 149 states have internal predecessors, (222), 38 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-11-20 11:25:05,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 298 transitions. [2022-11-20 11:25:05,222 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 298 transitions. Word has length 16 [2022-11-20 11:25:05,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:25:05,222 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 298 transitions. [2022-11-20 11:25:05,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:25:05,223 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 298 transitions. [2022-11-20 11:25:05,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-20 11:25:05,224 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:25:05,225 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:05,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:25:05,225 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:25:05,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:05,226 INFO L85 PathProgramCache]: Analyzing trace with hash -2053060758, now seen corresponding path program 1 times [2022-11-20 11:25:05,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:05,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768785654] [2022-11-20 11:25:05,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:05,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:05,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:05,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:25:05,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:05,349 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:25:05,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:05,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768785654] [2022-11-20 11:25:05,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768785654] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:05,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:05,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:25:05,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266264640] [2022-11-20 11:25:05,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:05,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:25:05,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:05,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:25:05,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:25:05,353 INFO L87 Difference]: Start difference. First operand 192 states and 298 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:25:05,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:25:05,382 INFO L93 Difference]: Finished difference Result 403 states and 633 transitions. [2022-11-20 11:25:05,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:25:05,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2022-11-20 11:25:05,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:25:05,385 INFO L225 Difference]: With dead ends: 403 [2022-11-20 11:25:05,386 INFO L226 Difference]: Without dead ends: 221 [2022-11-20 11:25:05,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:25:05,388 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 22 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:25:05,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 550 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:25:05,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-11-20 11:25:05,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 194. [2022-11-20 11:25:05,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 147 states have (on average 1.5238095238095237) internal successors, (224), 151 states have internal predecessors, (224), 38 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-11-20 11:25:05,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 300 transitions. [2022-11-20 11:25:05,408 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 300 transitions. Word has length 24 [2022-11-20 11:25:05,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:25:05,408 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 300 transitions. [2022-11-20 11:25:05,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:25:05,409 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 300 transitions. [2022-11-20 11:25:05,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-20 11:25:05,410 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:25:05,410 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:05,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:25:05,411 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:25:05,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:05,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1605801767, now seen corresponding path program 1 times [2022-11-20 11:25:05,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:05,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850373682] [2022-11-20 11:25:05,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:05,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:05,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:05,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:25:05,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:05,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:25:05,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:05,527 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:25:05,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:05,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850373682] [2022-11-20 11:25:05,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850373682] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:05,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:05,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:25:05,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874112200] [2022-11-20 11:25:05,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:05,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:25:05,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:05,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:25:05,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:25:05,537 INFO L87 Difference]: Start difference. First operand 194 states and 300 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 11:25:05,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:25:05,638 INFO L93 Difference]: Finished difference Result 476 states and 756 transitions. [2022-11-20 11:25:05,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:25:05,643 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 32 [2022-11-20 11:25:05,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:25:05,648 INFO L225 Difference]: With dead ends: 476 [2022-11-20 11:25:05,648 INFO L226 Difference]: Without dead ends: 298 [2022-11-20 11:25:05,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:25:05,655 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 116 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 1162 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:25:05,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 1162 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:25:05,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2022-11-20 11:25:05,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 198. [2022-11-20 11:25:05,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 150 states have (on average 1.5133333333333334) internal successors, (227), 154 states have internal predecessors, (227), 38 states have call successors, (38), 8 states have call predecessors, (38), 9 states have return successors, (39), 39 states have call predecessors, (39), 38 states have call successors, (39) [2022-11-20 11:25:05,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 304 transitions. [2022-11-20 11:25:05,687 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 304 transitions. Word has length 32 [2022-11-20 11:25:05,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:25:05,688 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 304 transitions. [2022-11-20 11:25:05,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 11:25:05,688 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 304 transitions. [2022-11-20 11:25:05,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-20 11:25:05,690 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:25:05,690 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] [2022-11-20 11:25:05,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:25:05,690 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:25:05,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:05,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1129595597, now seen corresponding path program 1 times [2022-11-20 11:25:05,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:05,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561437651] [2022-11-20 11:25:05,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:05,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:05,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:05,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:25:05,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:05,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:25:05,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:05,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-20 11:25:05,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:05,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:25:05,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:05,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561437651] [2022-11-20 11:25:05,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561437651] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:05,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:05,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:25:05,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062008203] [2022-11-20 11:25:05,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:05,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:25:05,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:05,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:25:05,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:25:05,914 INFO L87 Difference]: Start difference. First operand 198 states and 304 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 11:25:06,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:25:06,043 INFO L93 Difference]: Finished difference Result 341 states and 530 transitions. [2022-11-20 11:25:06,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:25:06,050 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2022-11-20 11:25:06,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:25:06,053 INFO L225 Difference]: With dead ends: 341 [2022-11-20 11:25:06,055 INFO L226 Difference]: Without dead ends: 194 [2022-11-20 11:25:06,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:25:06,057 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 116 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:25:06,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 1182 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:25:06,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-11-20 11:25:06,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2022-11-20 11:25:06,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 147 states have (on average 1.489795918367347) internal successors, (219), 151 states have internal predecessors, (219), 38 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-11-20 11:25:06,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 295 transitions. [2022-11-20 11:25:06,088 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 295 transitions. Word has length 35 [2022-11-20 11:25:06,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:25:06,090 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 295 transitions. [2022-11-20 11:25:06,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 11:25:06,090 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 295 transitions. [2022-11-20 11:25:06,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-20 11:25:06,095 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:25:06,096 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 11:25:06,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:25:06,096 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:25:06,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:06,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1343681902, now seen corresponding path program 1 times [2022-11-20 11:25:06,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:06,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99945146] [2022-11-20 11:25:06,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:06,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:06,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:06,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:25:06,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:06,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:25:06,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:06,227 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:25:06,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:06,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99945146] [2022-11-20 11:25:06,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99945146] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:25:06,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972732363] [2022-11-20 11:25:06,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:06,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:25:06,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:25:06,234 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:25:06,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:25:06,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:06,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:25:06,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:25:06,395 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:25:06,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:25:06,448 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:25:06,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972732363] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:25:06,449 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:25:06,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2022-11-20 11:25:06,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338186046] [2022-11-20 11:25:06,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:25:06,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:25:06,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:06,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:25:06,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:25:06,450 INFO L87 Difference]: Start difference. First operand 194 states and 295 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 11:25:06,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:25:06,513 INFO L93 Difference]: Finished difference Result 436 states and 677 transitions. [2022-11-20 11:25:06,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:25:06,514 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 35 [2022-11-20 11:25:06,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:25:06,516 INFO L225 Difference]: With dead ends: 436 [2022-11-20 11:25:06,516 INFO L226 Difference]: Without dead ends: 253 [2022-11-20 11:25:06,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:25:06,518 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 98 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:25:06,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 567 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:25:06,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-11-20 11:25:06,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 247. [2022-11-20 11:25:06,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 190 states have (on average 1.4631578947368422) internal successors, (278), 194 states have internal predecessors, (278), 48 states have call successors, (48), 8 states have call predecessors, (48), 8 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-11-20 11:25:06,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 374 transitions. [2022-11-20 11:25:06,566 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 374 transitions. Word has length 35 [2022-11-20 11:25:06,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:25:06,567 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 374 transitions. [2022-11-20 11:25:06,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 11:25:06,567 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 374 transitions. [2022-11-20 11:25:06,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-20 11:25:06,573 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:25:06,573 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:06,586 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 11:25:06,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:25:06,779 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:25:06,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:06,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1968918546, now seen corresponding path program 2 times [2022-11-20 11:25:06,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:06,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743223721] [2022-11-20 11:25:06,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:06,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:06,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:06,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:25:06,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:06,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:25:06,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:06,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 11:25:06,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:06,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:25:06,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:06,918 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-20 11:25:06,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:06,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743223721] [2022-11-20 11:25:06,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743223721] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:06,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:06,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:25:06,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530707807] [2022-11-20 11:25:06,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:06,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:25:06,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:06,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:25:06,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:25:06,925 INFO L87 Difference]: Start difference. First operand 247 states and 374 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 11:25:06,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:25:06,995 INFO L93 Difference]: Finished difference Result 474 states and 738 transitions. [2022-11-20 11:25:06,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:25:06,995 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2022-11-20 11:25:06,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:25:07,000 INFO L225 Difference]: With dead ends: 474 [2022-11-20 11:25:07,002 INFO L226 Difference]: Without dead ends: 256 [2022-11-20 11:25:07,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:25:07,007 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 19 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:25:07,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 792 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:25:07,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2022-11-20 11:25:07,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 254. [2022-11-20 11:25:07,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 196 states have (on average 1.4591836734693877) internal successors, (286), 200 states have internal predecessors, (286), 48 states have call successors, (48), 9 states have call predecessors, (48), 9 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-11-20 11:25:07,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 382 transitions. [2022-11-20 11:25:07,041 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 382 transitions. Word has length 57 [2022-11-20 11:25:07,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:25:07,042 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 382 transitions. [2022-11-20 11:25:07,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 11:25:07,044 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 382 transitions. [2022-11-20 11:25:07,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-20 11:25:07,047 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:25:07,048 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:07,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:25:07,048 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:25:07,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:07,049 INFO L85 PathProgramCache]: Analyzing trace with hash -784911651, now seen corresponding path program 1 times [2022-11-20 11:25:07,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:07,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345885540] [2022-11-20 11:25:07,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:07,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:07,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:07,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:25:07,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:07,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:25:07,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:07,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 11:25:07,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:07,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:25:07,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:07,144 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-20 11:25:07,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:07,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345885540] [2022-11-20 11:25:07,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345885540] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:07,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:07,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:25:07,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301392607] [2022-11-20 11:25:07,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:07,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:25:07,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:07,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:25:07,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:25:07,148 INFO L87 Difference]: Start difference. First operand 254 states and 382 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 11:25:07,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:25:07,204 INFO L93 Difference]: Finished difference Result 518 states and 790 transitions. [2022-11-20 11:25:07,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:25:07,205 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2022-11-20 11:25:07,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:25:07,208 INFO L225 Difference]: With dead ends: 518 [2022-11-20 11:25:07,209 INFO L226 Difference]: Without dead ends: 293 [2022-11-20 11:25:07,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:25:07,211 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 24 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:25:07,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 806 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:25:07,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2022-11-20 11:25:07,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 290. [2022-11-20 11:25:07,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 228 states have (on average 1.4166666666666667) internal successors, (323), 232 states have internal predecessors, (323), 51 states have call successors, (51), 10 states have call predecessors, (51), 10 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-11-20 11:25:07,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 425 transitions. [2022-11-20 11:25:07,240 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 425 transitions. Word has length 57 [2022-11-20 11:25:07,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:25:07,243 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 425 transitions. [2022-11-20 11:25:07,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 11:25:07,243 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 425 transitions. [2022-11-20 11:25:07,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-20 11:25:07,245 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:25:07,245 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 11:25:07,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:25:07,245 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:25:07,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:07,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1749980024, now seen corresponding path program 1 times [2022-11-20 11:25:07,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:07,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696330901] [2022-11-20 11:25:07,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:07,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:07,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:07,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:25:07,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:07,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:25:07,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:07,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 11:25:07,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:07,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:25:07,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:07,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:25:07,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:07,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:25:07,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:07,392 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-20 11:25:07,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:07,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696330901] [2022-11-20 11:25:07,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696330901] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:07,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:07,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:25:07,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980850584] [2022-11-20 11:25:07,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:07,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:25:07,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:07,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:25:07,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:25:07,396 INFO L87 Difference]: Start difference. First operand 290 states and 425 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 11:25:07,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:25:07,451 INFO L93 Difference]: Finished difference Result 529 states and 789 transitions. [2022-11-20 11:25:07,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:25:07,452 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 75 [2022-11-20 11:25:07,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:25:07,455 INFO L225 Difference]: With dead ends: 529 [2022-11-20 11:25:07,455 INFO L226 Difference]: Without dead ends: 292 [2022-11-20 11:25:07,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:25:07,459 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 0 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1072 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:25:07,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1072 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:25:07,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2022-11-20 11:25:07,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 290. [2022-11-20 11:25:07,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 228 states have (on average 1.4035087719298245) internal successors, (320), 232 states have internal predecessors, (320), 51 states have call successors, (51), 10 states have call predecessors, (51), 10 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-11-20 11:25:07,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 422 transitions. [2022-11-20 11:25:07,481 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 422 transitions. Word has length 75 [2022-11-20 11:25:07,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:25:07,482 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 422 transitions. [2022-11-20 11:25:07,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 11:25:07,482 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 422 transitions. [2022-11-20 11:25:07,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-20 11:25:07,483 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:25:07,483 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:07,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:25:07,484 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:25:07,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:07,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1059319133, now seen corresponding path program 1 times [2022-11-20 11:25:07,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:07,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824169869] [2022-11-20 11:25:07,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:07,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:07,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:07,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:25:07,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:07,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:25:07,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:07,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 11:25:07,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:07,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:25:07,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:07,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:25:07,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:07,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:25:07,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:07,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:25:07,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:07,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 11:25:07,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:07,589 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2022-11-20 11:25:07,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:07,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824169869] [2022-11-20 11:25:07,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824169869] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:07,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:07,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:25:07,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245701218] [2022-11-20 11:25:07,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:07,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:25:07,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:07,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:25:07,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:25:07,591 INFO L87 Difference]: Start difference. First operand 290 states and 422 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 11:25:07,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:25:07,650 INFO L93 Difference]: Finished difference Result 566 states and 845 transitions. [2022-11-20 11:25:07,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:25:07,650 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 104 [2022-11-20 11:25:07,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:25:07,653 INFO L225 Difference]: With dead ends: 566 [2022-11-20 11:25:07,653 INFO L226 Difference]: Without dead ends: 334 [2022-11-20 11:25:07,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:25:07,655 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 25 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:25:07,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 806 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:25:07,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-11-20 11:25:07,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 331. [2022-11-20 11:25:07,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 265 states have (on average 1.3660377358490565) internal successors, (362), 269 states have internal predecessors, (362), 54 states have call successors, (54), 11 states have call predecessors, (54), 11 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2022-11-20 11:25:07,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 470 transitions. [2022-11-20 11:25:07,672 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 470 transitions. Word has length 104 [2022-11-20 11:25:07,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:25:07,673 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 470 transitions. [2022-11-20 11:25:07,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 11:25:07,673 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 470 transitions. [2022-11-20 11:25:07,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-20 11:25:07,674 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:25:07,674 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:07,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 11:25:07,675 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:25:07,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:07,675 INFO L85 PathProgramCache]: Analyzing trace with hash 683313439, now seen corresponding path program 1 times [2022-11-20 11:25:07,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:07,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378249153] [2022-11-20 11:25:07,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:07,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:07,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:07,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:25:07,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:07,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:25:07,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:07,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 11:25:07,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:07,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:25:07,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:07,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:25:07,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:07,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:25:07,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:07,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:25:07,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:07,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 11:25:07,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:07,777 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-11-20 11:25:07,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:07,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378249153] [2022-11-20 11:25:07,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378249153] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:07,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:07,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:25:07,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691431869] [2022-11-20 11:25:07,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:07,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:25:07,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:07,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:25:07,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:25:07,780 INFO L87 Difference]: Start difference. First operand 331 states and 470 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 11:25:07,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:25:07,830 INFO L93 Difference]: Finished difference Result 592 states and 865 transitions. [2022-11-20 11:25:07,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:25:07,831 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 105 [2022-11-20 11:25:07,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:25:07,833 INFO L225 Difference]: With dead ends: 592 [2022-11-20 11:25:07,834 INFO L226 Difference]: Without dead ends: 325 [2022-11-20 11:25:07,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:25:07,836 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 15 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:25:07,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 765 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:25:07,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2022-11-20 11:25:07,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2022-11-20 11:25:07,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 260 states have (on average 1.3461538461538463) internal successors, (350), 264 states have internal predecessors, (350), 53 states have call successors, (53), 11 states have call predecessors, (53), 11 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-11-20 11:25:07,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 456 transitions. [2022-11-20 11:25:07,853 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 456 transitions. Word has length 105 [2022-11-20 11:25:07,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:25:07,853 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 456 transitions. [2022-11-20 11:25:07,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 11:25:07,854 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 456 transitions. [2022-11-20 11:25:07,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-20 11:25:07,855 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:25:07,855 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 11:25:07,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 11:25:07,855 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:25:07,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:07,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1739189569, now seen corresponding path program 1 times [2022-11-20 11:25:07,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:07,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067624946] [2022-11-20 11:25:07,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:07,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:07,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:07,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:25:07,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:07,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:25:07,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:07,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 11:25:07,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:07,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:25:07,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:07,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:25:07,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:07,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:25:07,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:07,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:25:07,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:07,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 11:25:07,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:07,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 11:25:07,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:08,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 11:25:08,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:08,004 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2022-11-20 11:25:08,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:08,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067624946] [2022-11-20 11:25:08,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067624946] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:08,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:08,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:25:08,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556009389] [2022-11-20 11:25:08,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:08,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:25:08,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:08,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:25:08,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:25:08,008 INFO L87 Difference]: Start difference. First operand 325 states and 456 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-20 11:25:08,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:25:08,043 INFO L93 Difference]: Finished difference Result 567 states and 814 transitions. [2022-11-20 11:25:08,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:25:08,044 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 124 [2022-11-20 11:25:08,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:25:08,046 INFO L225 Difference]: With dead ends: 567 [2022-11-20 11:25:08,046 INFO L226 Difference]: Without dead ends: 327 [2022-11-20 11:25:08,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:25:08,048 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 0 mSDsluCounter, 790 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1057 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:25:08,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1057 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:25:08,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-11-20 11:25:08,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 325. [2022-11-20 11:25:08,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 260 states have (on average 1.3346153846153845) internal successors, (347), 264 states have internal predecessors, (347), 53 states have call successors, (53), 11 states have call predecessors, (53), 11 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-11-20 11:25:08,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 453 transitions. [2022-11-20 11:25:08,066 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 453 transitions. Word has length 124 [2022-11-20 11:25:08,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:25:08,066 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 453 transitions. [2022-11-20 11:25:08,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-20 11:25:08,067 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 453 transitions. [2022-11-20 11:25:08,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-20 11:25:08,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:25:08,069 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 7, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:08,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 11:25:08,069 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:25:08,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:08,070 INFO L85 PathProgramCache]: Analyzing trace with hash -844197338, now seen corresponding path program 1 times [2022-11-20 11:25:08,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:08,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623929178] [2022-11-20 11:25:08,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:08,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:08,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:08,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:25:08,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:08,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:25:08,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:08,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 11:25:08,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:08,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:25:08,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:08,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:25:08,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:08,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:25:08,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:08,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:25:08,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:08,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 11:25:08,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:08,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 11:25:08,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:08,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 11:25:08,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:08,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:25:08,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:08,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 11:25:08,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:08,225 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2022-11-20 11:25:08,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:08,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623929178] [2022-11-20 11:25:08,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623929178] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:08,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:08,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:25:08,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208041561] [2022-11-20 11:25:08,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:08,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:25:08,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:08,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:25:08,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:25:08,228 INFO L87 Difference]: Start difference. First operand 325 states and 453 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-20 11:25:08,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:25:08,297 INFO L93 Difference]: Finished difference Result 530 states and 774 transitions. [2022-11-20 11:25:08,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:25:08,298 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 157 [2022-11-20 11:25:08,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:25:08,301 INFO L225 Difference]: With dead ends: 530 [2022-11-20 11:25:08,301 INFO L226 Difference]: Without dead ends: 323 [2022-11-20 11:25:08,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:25:08,305 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 13 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:25:08,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 733 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:25:08,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2022-11-20 11:25:08,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2022-11-20 11:25:08,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 259 states have (on average 1.332046332046332) internal successors, (345), 263 states have internal predecessors, (345), 52 states have call successors, (52), 11 states have call predecessors, (52), 11 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-11-20 11:25:08,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 449 transitions. [2022-11-20 11:25:08,323 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 449 transitions. Word has length 157 [2022-11-20 11:25:08,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:25:08,323 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 449 transitions. [2022-11-20 11:25:08,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-20 11:25:08,324 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 449 transitions. [2022-11-20 11:25:08,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-11-20 11:25:08,327 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:25:08,328 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:08,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 11:25:08,328 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:25:08,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:08,329 INFO L85 PathProgramCache]: Analyzing trace with hash -233735844, now seen corresponding path program 1 times [2022-11-20 11:25:08,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:08,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901358154] [2022-11-20 11:25:08,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:08,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:08,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:08,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:25:08,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:08,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:25:08,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:08,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 11:25:08,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:08,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:25:08,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:08,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:25:08,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:08,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:25:08,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:08,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:25:08,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:08,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 11:25:08,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:08,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 11:25:08,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:08,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 11:25:08,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:08,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:25:08,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:08,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 11:25:08,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:08,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-20 11:25:08,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:08,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:25:08,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:08,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-11-20 11:25:08,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:08,540 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2022-11-20 11:25:08,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:08,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901358154] [2022-11-20 11:25:08,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901358154] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:08,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:08,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:25:08,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838485052] [2022-11-20 11:25:08,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:08,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:25:08,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:08,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:25:08,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:25:08,543 INFO L87 Difference]: Start difference. First operand 323 states and 449 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-20 11:25:08,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:25:08,617 INFO L93 Difference]: Finished difference Result 470 states and 670 transitions. [2022-11-20 11:25:08,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:25:08,617 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 176 [2022-11-20 11:25:08,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:25:08,620 INFO L225 Difference]: With dead ends: 470 [2022-11-20 11:25:08,620 INFO L226 Difference]: Without dead ends: 306 [2022-11-20 11:25:08,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:25:08,622 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 35 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:25:08,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 714 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:25:08,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2022-11-20 11:25:08,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 306. [2022-11-20 11:25:08,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 245 states have (on average 1.3224489795918368) internal successors, (324), 249 states have internal predecessors, (324), 49 states have call successors, (49), 11 states have call predecessors, (49), 11 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-11-20 11:25:08,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 422 transitions. [2022-11-20 11:25:08,641 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 422 transitions. Word has length 176 [2022-11-20 11:25:08,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:25:08,642 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 422 transitions. [2022-11-20 11:25:08,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-20 11:25:08,642 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 422 transitions. [2022-11-20 11:25:08,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-20 11:25:08,645 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:25:08,645 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:08,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 11:25:08,646 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:25:08,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:08,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1725258332, now seen corresponding path program 1 times [2022-11-20 11:25:08,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:08,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499671442] [2022-11-20 11:25:08,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:08,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:08,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:08,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:25:08,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:08,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:25:08,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:08,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 11:25:08,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:08,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:25:08,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:08,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:25:08,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:08,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:25:08,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:08,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:25:08,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:08,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 11:25:08,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:08,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 11:25:08,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:08,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 11:25:08,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:08,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:25:08,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:08,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 11:25:08,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:08,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-20 11:25:08,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:08,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:25:08,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:08,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-11-20 11:25:08,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:08,816 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2022-11-20 11:25:08,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:08,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499671442] [2022-11-20 11:25:08,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499671442] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:08,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:08,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:25:08,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342234090] [2022-11-20 11:25:08,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:08,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:25:08,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:08,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:25:08,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:25:08,821 INFO L87 Difference]: Start difference. First operand 306 states and 422 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-20 11:25:08,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:25:08,886 INFO L93 Difference]: Finished difference Result 453 states and 643 transitions. [2022-11-20 11:25:08,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:25:08,887 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 178 [2022-11-20 11:25:08,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:25:08,890 INFO L225 Difference]: With dead ends: 453 [2022-11-20 11:25:08,890 INFO L226 Difference]: Without dead ends: 287 [2022-11-20 11:25:08,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:25:08,893 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 30 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:25:08,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 718 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:25:08,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-11-20 11:25:08,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2022-11-20 11:25:08,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 229 states have (on average 1.314410480349345) internal successors, (301), 233 states have internal predecessors, (301), 46 states have call successors, (46), 11 states have call predecessors, (46), 11 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-11-20 11:25:08,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 393 transitions. [2022-11-20 11:25:08,908 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 393 transitions. Word has length 178 [2022-11-20 11:25:08,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:25:08,909 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 393 transitions. [2022-11-20 11:25:08,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-20 11:25:08,909 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 393 transitions. [2022-11-20 11:25:08,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-20 11:25:08,912 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:25:08,912 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 7, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:08,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 11:25:08,912 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:25:08,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:08,914 INFO L85 PathProgramCache]: Analyzing trace with hash 209603569, now seen corresponding path program 1 times [2022-11-20 11:25:08,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:08,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82817069] [2022-11-20 11:25:08,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:08,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:08,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:09,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:25:09,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:09,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:25:09,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:09,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 11:25:09,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:09,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:25:09,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:09,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:25:09,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:09,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:25:09,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:09,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:25:09,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:09,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 11:25:09,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:09,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 11:25:09,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:09,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 11:25:09,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:09,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:25:09,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:09,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 11:25:09,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:09,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-20 11:25:09,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:09,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:25:09,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:09,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-11-20 11:25:09,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:09,114 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2022-11-20 11:25:09,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:09,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82817069] [2022-11-20 11:25:09,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82817069] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:09,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:09,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:25:09,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084387737] [2022-11-20 11:25:09,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:09,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:25:09,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:09,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:25:09,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:25:09,117 INFO L87 Difference]: Start difference. First operand 287 states and 393 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-20 11:25:09,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:25:09,143 INFO L93 Difference]: Finished difference Result 433 states and 613 transitions. [2022-11-20 11:25:09,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:25:09,144 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 179 [2022-11-20 11:25:09,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:25:09,146 INFO L225 Difference]: With dead ends: 433 [2022-11-20 11:25:09,146 INFO L226 Difference]: Without dead ends: 287 [2022-11-20 11:25:09,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:25:09,148 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 0 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1036 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:25:09,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1036 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:25:09,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-11-20 11:25:09,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2022-11-20 11:25:09,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 229 states have (on average 1.2882096069868996) internal successors, (295), 233 states have internal predecessors, (295), 46 states have call successors, (46), 11 states have call predecessors, (46), 11 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-11-20 11:25:09,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 387 transitions. [2022-11-20 11:25:09,162 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 387 transitions. Word has length 179 [2022-11-20 11:25:09,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:25:09,163 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 387 transitions. [2022-11-20 11:25:09,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-20 11:25:09,163 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 387 transitions. [2022-11-20 11:25:09,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-11-20 11:25:09,166 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:25:09,166 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:09,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 11:25:09,167 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:25:09,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:09,167 INFO L85 PathProgramCache]: Analyzing trace with hash -927323165, now seen corresponding path program 1 times [2022-11-20 11:25:09,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:09,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364772840] [2022-11-20 11:25:09,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:09,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:09,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:09,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:25:09,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:09,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:25:09,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:09,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 11:25:09,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:09,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:25:09,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:09,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:25:09,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:09,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:25:09,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:09,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:25:09,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:09,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 11:25:09,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:09,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 11:25:09,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:09,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 11:25:09,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:09,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:25:09,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:09,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 11:25:09,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:09,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-20 11:25:09,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:09,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-11-20 11:25:09,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:09,359 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 138 proven. 11 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2022-11-20 11:25:09,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:09,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364772840] [2022-11-20 11:25:09,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364772840] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:25:09,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13435819] [2022-11-20 11:25:09,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:09,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:25:09,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:25:09,363 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:25:09,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:25:09,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:09,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:25:09,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:25:09,581 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 138 proven. 11 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2022-11-20 11:25:09,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:25:09,758 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2022-11-20 11:25:09,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13435819] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 11:25:09,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:25:09,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 5 [2022-11-20 11:25:09,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815347862] [2022-11-20 11:25:09,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:09,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:25:09,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:09,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:25:09,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:25:09,763 INFO L87 Difference]: Start difference. First operand 287 states and 387 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 11:25:09,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:25:09,827 INFO L93 Difference]: Finished difference Result 454 states and 635 transitions. [2022-11-20 11:25:09,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:25:09,828 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 186 [2022-11-20 11:25:09,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:25:09,830 INFO L225 Difference]: With dead ends: 454 [2022-11-20 11:25:09,831 INFO L226 Difference]: Without dead ends: 266 [2022-11-20 11:25:09,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 398 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:25:09,832 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 25 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:25:09,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 717 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:25:09,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-20 11:25:09,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2022-11-20 11:25:09,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 211 states have (on average 1.2796208530805686) internal successors, (270), 215 states have internal predecessors, (270), 43 states have call successors, (43), 11 states have call predecessors, (43), 11 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-11-20 11:25:09,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 356 transitions. [2022-11-20 11:25:09,847 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 356 transitions. Word has length 186 [2022-11-20 11:25:09,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:25:09,847 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 356 transitions. [2022-11-20 11:25:09,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 11:25:09,848 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 356 transitions. [2022-11-20 11:25:09,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-11-20 11:25:09,850 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:25:09,851 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:09,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:25:10,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 11:25:10,057 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:25:10,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:10,058 INFO L85 PathProgramCache]: Analyzing trace with hash 522512342, now seen corresponding path program 1 times [2022-11-20 11:25:10,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:10,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810191182] [2022-11-20 11:25:10,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:10,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:10,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:10,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:25:10,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:10,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:25:10,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:10,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 11:25:10,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:10,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:25:10,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:10,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:25:10,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:10,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:25:10,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:10,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:25:10,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:10,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 11:25:10,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:10,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 11:25:10,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:10,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 11:25:10,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:10,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:25:10,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:10,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 11:25:10,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:10,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-20 11:25:10,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:10,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:25:10,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:10,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:25:10,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:10,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 11:25:10,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:10,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-20 11:25:10,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:10,215 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2022-11-20 11:25:10,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:10,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810191182] [2022-11-20 11:25:10,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810191182] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:10,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:10,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:25:10,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020457154] [2022-11-20 11:25:10,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:10,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:25:10,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:10,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:25:10,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:25:10,218 INFO L87 Difference]: Start difference. First operand 266 states and 356 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-20 11:25:10,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:25:10,253 INFO L93 Difference]: Finished difference Result 411 states and 576 transitions. [2022-11-20 11:25:10,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:25:10,253 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 210 [2022-11-20 11:25:10,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:25:10,255 INFO L225 Difference]: With dead ends: 411 [2022-11-20 11:25:10,256 INFO L226 Difference]: Without dead ends: 272 [2022-11-20 11:25:10,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:25:10,257 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 6 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:25:10,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 758 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:25:10,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-11-20 11:25:10,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 270. [2022-11-20 11:25:10,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 214 states have (on average 1.2757009345794392) internal successors, (273), 218 states have internal predecessors, (273), 43 states have call successors, (43), 12 states have call predecessors, (43), 12 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-11-20 11:25:10,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 359 transitions. [2022-11-20 11:25:10,271 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 359 transitions. Word has length 210 [2022-11-20 11:25:10,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:25:10,272 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 359 transitions. [2022-11-20 11:25:10,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-20 11:25:10,273 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 359 transitions. [2022-11-20 11:25:10,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-11-20 11:25:10,275 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:25:10,276 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:10,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 11:25:10,276 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:25:10,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:10,277 INFO L85 PathProgramCache]: Analyzing trace with hash 2072955924, now seen corresponding path program 1 times [2022-11-20 11:25:10,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:10,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414273366] [2022-11-20 11:25:10,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:10,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:10,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:10,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:25:10,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:10,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:25:10,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:10,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 11:25:10,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:10,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:25:10,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:10,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:25:10,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:10,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:25:10,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:10,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:25:10,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:10,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 11:25:10,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:10,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 11:25:10,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:10,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 11:25:10,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:10,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:25:10,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:10,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 11:25:10,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:10,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-20 11:25:10,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:10,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:25:10,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:10,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:25:10,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:10,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 11:25:10,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:10,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-20 11:25:10,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:10,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-11-20 11:25:10,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:10,486 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2022-11-20 11:25:10,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:10,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414273366] [2022-11-20 11:25:10,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414273366] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:25:10,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898044202] [2022-11-20 11:25:10,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:10,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:25:10,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:25:10,488 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:25:10,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:25:10,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:10,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:25:10,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:25:10,725 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2022-11-20 11:25:10,725 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:25:10,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898044202] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:10,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:25:10,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-11-20 11:25:10,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127653850] [2022-11-20 11:25:10,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:10,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:25:10,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:10,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:25:10,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:25:10,728 INFO L87 Difference]: Start difference. First operand 270 states and 359 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-20 11:25:10,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:25:10,768 INFO L93 Difference]: Finished difference Result 420 states and 583 transitions. [2022-11-20 11:25:10,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:25:10,769 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 217 [2022-11-20 11:25:10,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:25:10,771 INFO L225 Difference]: With dead ends: 420 [2022-11-20 11:25:10,771 INFO L226 Difference]: Without dead ends: 277 [2022-11-20 11:25:10,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:25:10,773 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 7 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:25:10,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 763 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:25:10,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2022-11-20 11:25:10,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 275. [2022-11-20 11:25:10,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 218 states have (on average 1.2706422018348624) internal successors, (277), 222 states have internal predecessors, (277), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-11-20 11:25:10,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 363 transitions. [2022-11-20 11:25:10,787 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 363 transitions. Word has length 217 [2022-11-20 11:25:10,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:25:10,787 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 363 transitions. [2022-11-20 11:25:10,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-20 11:25:10,788 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 363 transitions. [2022-11-20 11:25:10,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-11-20 11:25:10,790 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:25:10,791 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:10,801 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-20 11:25:10,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:25:10,997 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:25:10,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:10,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1425681232, now seen corresponding path program 1 times [2022-11-20 11:25:10,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:10,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058256656] [2022-11-20 11:25:10,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:10,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:11,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:11,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:25:11,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:11,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:25:11,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:11,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 11:25:11,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:11,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:25:11,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:11,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:25:11,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:11,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:25:11,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:11,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:25:11,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:11,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 11:25:11,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:11,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 11:25:11,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:11,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 11:25:11,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:11,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:25:11,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:11,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 11:25:11,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:11,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-20 11:25:11,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:11,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:25:11,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:11,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:25:11,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:11,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 11:25:11,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:11,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-20 11:25:11,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:11,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-11-20 11:25:11,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:11,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-11-20 11:25:11,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:11,199 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2022-11-20 11:25:11,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:11,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058256656] [2022-11-20 11:25:11,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058256656] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:25:11,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169683470] [2022-11-20 11:25:11,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:11,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:25:11,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:25:11,201 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:25:11,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:25:11,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:11,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:25:11,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:25:11,420 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2022-11-20 11:25:11,420 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:25:11,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169683470] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:11,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:25:11,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-11-20 11:25:11,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153247326] [2022-11-20 11:25:11,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:11,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:25:11,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:11,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:25:11,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:25:11,423 INFO L87 Difference]: Start difference. First operand 275 states and 363 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-20 11:25:11,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:25:11,468 INFO L93 Difference]: Finished difference Result 422 states and 581 transitions. [2022-11-20 11:25:11,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:25:11,469 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 225 [2022-11-20 11:25:11,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:25:11,471 INFO L225 Difference]: With dead ends: 422 [2022-11-20 11:25:11,472 INFO L226 Difference]: Without dead ends: 274 [2022-11-20 11:25:11,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:25:11,473 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 7 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:25:11,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 749 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:25:11,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-11-20 11:25:11,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2022-11-20 11:25:11,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 218 states have (on average 1.2568807339449541) internal successors, (274), 221 states have internal predecessors, (274), 42 states have call successors, (42), 13 states have call predecessors, (42), 13 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-11-20 11:25:11,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 358 transitions. [2022-11-20 11:25:11,489 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 358 transitions. Word has length 225 [2022-11-20 11:25:11,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:25:11,489 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 358 transitions. [2022-11-20 11:25:11,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-20 11:25:11,490 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 358 transitions. [2022-11-20 11:25:11,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-11-20 11:25:11,493 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:25:11,493 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 11:25:11,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:25:11,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:25:11,699 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:25:11,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:11,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1356260272, now seen corresponding path program 1 times [2022-11-20 11:25:11,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:11,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798965598] [2022-11-20 11:25:11,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:11,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:11,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:11,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:25:11,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:11,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:25:11,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:11,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 11:25:11,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:11,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:25:11,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:11,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:25:11,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:11,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:25:11,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:11,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:25:11,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:11,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 11:25:11,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:11,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 11:25:11,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:11,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 11:25:11,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:11,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:25:11,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:11,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 11:25:11,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:11,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-20 11:25:11,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:11,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:25:11,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:11,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:25:11,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:11,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 11:25:11,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:11,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-20 11:25:11,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:11,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-11-20 11:25:11,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:11,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-11-20 11:25:11,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:11,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-11-20 11:25:11,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:11,890 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2022-11-20 11:25:11,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:11,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798965598] [2022-11-20 11:25:11,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798965598] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:11,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:11,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:25:11,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982783818] [2022-11-20 11:25:11,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:11,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:25:11,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:11,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:25:11,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:25:11,893 INFO L87 Difference]: Start difference. First operand 274 states and 358 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-20 11:25:12,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:25:12,209 INFO L93 Difference]: Finished difference Result 454 states and 630 transitions. [2022-11-20 11:25:12,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:25:12,210 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 233 [2022-11-20 11:25:12,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:25:12,212 INFO L225 Difference]: With dead ends: 454 [2022-11-20 11:25:12,213 INFO L226 Difference]: Without dead ends: 307 [2022-11-20 11:25:12,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:25:12,214 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 173 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:25:12,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 519 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 11:25:12,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2022-11-20 11:25:12,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 273. [2022-11-20 11:25:12,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 218 states have (on average 1.2522935779816513) internal successors, (273), 220 states have internal predecessors, (273), 41 states have call successors, (41), 13 states have call predecessors, (41), 13 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-11-20 11:25:12,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 355 transitions. [2022-11-20 11:25:12,241 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 355 transitions. Word has length 233 [2022-11-20 11:25:12,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:25:12,241 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 355 transitions. [2022-11-20 11:25:12,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-20 11:25:12,242 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 355 transitions. [2022-11-20 11:25:12,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-11-20 11:25:12,245 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:25:12,245 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:12,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-20 11:25:12,245 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:25:12,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:12,246 INFO L85 PathProgramCache]: Analyzing trace with hash -2142269095, now seen corresponding path program 1 times [2022-11-20 11:25:12,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:12,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129391505] [2022-11-20 11:25:12,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:12,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:12,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:12,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:25:12,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:12,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:25:12,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:12,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 11:25:12,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:12,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:25:12,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:12,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:25:12,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:12,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:25:12,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:12,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:25:12,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:12,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 11:25:12,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:12,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 11:25:12,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:12,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 11:25:12,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:12,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:25:12,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:12,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 11:25:12,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:12,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-20 11:25:12,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:12,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:25:12,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:12,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:25:12,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:12,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 11:25:12,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:12,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-20 11:25:12,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:12,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-11-20 11:25:12,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:12,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-11-20 11:25:12,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:12,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-11-20 11:25:12,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:12,563 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2022-11-20 11:25:12,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:12,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129391505] [2022-11-20 11:25:12,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129391505] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:12,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:12,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:25:12,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305174151] [2022-11-20 11:25:12,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:12,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:25:12,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:12,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:25:12,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:25:12,566 INFO L87 Difference]: Start difference. First operand 273 states and 355 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 3 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 11:25:13,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:25:13,367 INFO L93 Difference]: Finished difference Result 632 states and 851 transitions. [2022-11-20 11:25:13,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:25:13,368 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 3 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 234 [2022-11-20 11:25:13,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:25:13,371 INFO L225 Difference]: With dead ends: 632 [2022-11-20 11:25:13,372 INFO L226 Difference]: Without dead ends: 486 [2022-11-20 11:25:13,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:25:13,377 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 421 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:25:13,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 645 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 11:25:13,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2022-11-20 11:25:13,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 480. [2022-11-20 11:25:13,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 378 states have (on average 1.306878306878307) internal successors, (494), 380 states have internal predecessors, (494), 70 states have call successors, (70), 31 states have call predecessors, (70), 31 states have return successors, (70), 69 states have call predecessors, (70), 70 states have call successors, (70) [2022-11-20 11:25:13,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 634 transitions. [2022-11-20 11:25:13,443 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 634 transitions. Word has length 234 [2022-11-20 11:25:13,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:25:13,443 INFO L495 AbstractCegarLoop]: Abstraction has 480 states and 634 transitions. [2022-11-20 11:25:13,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 3 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 11:25:13,444 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 634 transitions. [2022-11-20 11:25:13,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2022-11-20 11:25:13,448 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:25:13,448 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:13,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-20 11:25:13,449 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:25:13,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:13,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1811435868, now seen corresponding path program 1 times [2022-11-20 11:25:13,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:13,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112615510] [2022-11-20 11:25:13,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:13,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:13,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:13,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:25:13,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:13,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:25:13,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:13,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 11:25:13,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:13,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:25:13,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:13,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:25:13,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:13,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:25:13,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:13,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:25:13,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:13,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 11:25:13,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:13,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 11:25:13,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:13,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 11:25:13,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:13,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:25:13,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:13,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 11:25:13,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:13,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-20 11:25:13,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:13,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:25:13,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:13,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:25:13,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:13,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 11:25:13,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:13,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-20 11:25:13,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:13,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-11-20 11:25:13,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:13,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-11-20 11:25:13,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:13,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-11-20 11:25:13,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:13,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-11-20 11:25:13,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:13,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-11-20 11:25:13,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:13,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-11-20 11:25:13,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:13,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-11-20 11:25:13,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:13,715 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 643 trivial. 0 not checked. [2022-11-20 11:25:13,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:13,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112615510] [2022-11-20 11:25:13,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112615510] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:13,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:13,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:25:13,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119508785] [2022-11-20 11:25:13,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:13,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:25:13,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:13,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:25:13,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:25:13,719 INFO L87 Difference]: Start difference. First operand 480 states and 634 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-20 11:25:14,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:25:14,345 INFO L93 Difference]: Finished difference Result 1049 states and 1436 transitions. [2022-11-20 11:25:14,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:25:14,346 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 267 [2022-11-20 11:25:14,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:25:14,350 INFO L225 Difference]: With dead ends: 1049 [2022-11-20 11:25:14,350 INFO L226 Difference]: Without dead ends: 768 [2022-11-20 11:25:14,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:25:14,352 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 221 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:25:14,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 488 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 11:25:14,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2022-11-20 11:25:14,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 599. [2022-11-20 11:25:14,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 472 states have (on average 1.3135593220338984) internal successors, (620), 478 states have internal predecessors, (620), 85 states have call successors, (85), 41 states have call predecessors, (85), 41 states have return successors, (85), 81 states have call predecessors, (85), 85 states have call successors, (85) [2022-11-20 11:25:14,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 790 transitions. [2022-11-20 11:25:14,431 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 790 transitions. Word has length 267 [2022-11-20 11:25:14,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:25:14,432 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 790 transitions. [2022-11-20 11:25:14,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-20 11:25:14,432 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 790 transitions. [2022-11-20 11:25:14,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2022-11-20 11:25:14,436 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:25:14,437 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:14,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-20 11:25:14,437 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:25:14,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:14,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1916258247, now seen corresponding path program 1 times [2022-11-20 11:25:14,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:14,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395710087] [2022-11-20 11:25:14,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:14,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:14,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:14,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:25:14,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:14,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:25:14,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:14,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 11:25:14,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:14,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:25:14,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:14,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:25:14,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:14,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:25:14,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:14,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:25:14,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:14,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 11:25:14,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:14,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 11:25:14,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:14,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 11:25:14,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:14,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:25:14,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:14,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 11:25:14,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:14,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-20 11:25:14,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:14,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:25:14,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:14,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:25:14,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:14,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 11:25:14,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:14,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-20 11:25:14,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:14,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-11-20 11:25:14,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:14,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-11-20 11:25:14,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:14,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-11-20 11:25:14,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:14,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-11-20 11:25:14,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:14,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-11-20 11:25:14,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:14,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-11-20 11:25:14,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:14,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-11-20 11:25:14,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:14,629 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 643 trivial. 0 not checked. [2022-11-20 11:25:14,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:14,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395710087] [2022-11-20 11:25:14,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395710087] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:14,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:14,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:25:14,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469360779] [2022-11-20 11:25:14,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:14,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:25:14,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:14,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:25:14,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:25:14,635 INFO L87 Difference]: Start difference. First operand 599 states and 790 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-20 11:25:15,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:25:15,287 INFO L93 Difference]: Finished difference Result 1323 states and 1794 transitions. [2022-11-20 11:25:15,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:25:15,288 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 268 [2022-11-20 11:25:15,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:25:15,294 INFO L225 Difference]: With dead ends: 1323 [2022-11-20 11:25:15,294 INFO L226 Difference]: Without dead ends: 956 [2022-11-20 11:25:15,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:25:15,296 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 222 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:25:15,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 513 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 11:25:15,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2022-11-20 11:25:15,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 948. [2022-11-20 11:25:15,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 741 states have (on average 1.3400809716599191) internal successors, (993), 755 states have internal predecessors, (993), 139 states have call successors, (139), 67 states have call predecessors, (139), 67 states have return successors, (139), 129 states have call predecessors, (139), 139 states have call successors, (139) [2022-11-20 11:25:15,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1271 transitions. [2022-11-20 11:25:15,411 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1271 transitions. Word has length 268 [2022-11-20 11:25:15,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:25:15,412 INFO L495 AbstractCegarLoop]: Abstraction has 948 states and 1271 transitions. [2022-11-20 11:25:15,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-20 11:25:15,413 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1271 transitions. [2022-11-20 11:25:15,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2022-11-20 11:25:15,417 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:25:15,417 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:15,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-20 11:25:15,418 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:25:15,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:15,419 INFO L85 PathProgramCache]: Analyzing trace with hash -349092137, now seen corresponding path program 1 times [2022-11-20 11:25:15,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:15,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412680269] [2022-11-20 11:25:15,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:15,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:15,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:15,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:25:15,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:15,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:25:15,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:15,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 11:25:15,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:15,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:25:15,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:15,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:25:15,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:15,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:25:15,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:15,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:25:15,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:15,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 11:25:15,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:15,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 11:25:15,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:15,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 11:25:15,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:15,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:25:15,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:15,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 11:25:15,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:15,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-20 11:25:15,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:15,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:25:15,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:15,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:25:15,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:15,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 11:25:15,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:15,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-20 11:25:15,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:15,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-11-20 11:25:15,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:15,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-11-20 11:25:15,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:15,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-11-20 11:25:15,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:15,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-11-20 11:25:15,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:15,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-11-20 11:25:15,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:15,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-11-20 11:25:15,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:15,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-11-20 11:25:15,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:15,612 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 643 trivial. 0 not checked. [2022-11-20 11:25:15,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:15,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412680269] [2022-11-20 11:25:15,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412680269] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:15,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:15,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:25:15,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219128063] [2022-11-20 11:25:15,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:15,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:25:15,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:15,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:25:15,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:25:15,616 INFO L87 Difference]: Start difference. First operand 948 states and 1271 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 11:25:16,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:25:16,317 INFO L93 Difference]: Finished difference Result 2208 states and 3033 transitions. [2022-11-20 11:25:16,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:25:16,323 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 269 [2022-11-20 11:25:16,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:25:16,331 INFO L225 Difference]: With dead ends: 2208 [2022-11-20 11:25:16,331 INFO L226 Difference]: Without dead ends: 1532 [2022-11-20 11:25:16,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:25:16,335 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 222 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:25:16,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 537 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 11:25:16,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1532 states. [2022-11-20 11:25:16,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1532 to 1518. [2022-11-20 11:25:16,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1518 states, 1179 states have (on average 1.364715860899067) internal successors, (1609), 1207 states have internal predecessors, (1609), 231 states have call successors, (231), 107 states have call predecessors, (231), 107 states have return successors, (231), 211 states have call predecessors, (231), 231 states have call successors, (231) [2022-11-20 11:25:16,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1518 states to 1518 states and 2071 transitions. [2022-11-20 11:25:16,549 INFO L78 Accepts]: Start accepts. Automaton has 1518 states and 2071 transitions. Word has length 269 [2022-11-20 11:25:16,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:25:16,550 INFO L495 AbstractCegarLoop]: Abstraction has 1518 states and 2071 transitions. [2022-11-20 11:25:16,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 11:25:16,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1518 states and 2071 transitions. [2022-11-20 11:25:16,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2022-11-20 11:25:16,555 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:25:16,556 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:16,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-20 11:25:16,556 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:25:16,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:16,557 INFO L85 PathProgramCache]: Analyzing trace with hash -743458923, now seen corresponding path program 1 times [2022-11-20 11:25:16,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:16,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799142737] [2022-11-20 11:25:16,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:16,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:16,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:16,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:25:16,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:16,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:25:16,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:16,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 11:25:16,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:16,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:25:16,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:16,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:25:16,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:16,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:25:16,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:16,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:25:16,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:16,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 11:25:16,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:16,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 11:25:16,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:16,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 11:25:16,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:16,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:25:16,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:16,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 11:25:16,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:16,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-20 11:25:16,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:16,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:25:16,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:16,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:25:16,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:16,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 11:25:16,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:16,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-20 11:25:16,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:16,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-11-20 11:25:16,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:16,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-11-20 11:25:16,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:16,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-11-20 11:25:16,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:16,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-11-20 11:25:16,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:16,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-11-20 11:25:16,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:16,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-11-20 11:25:16,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:16,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-11-20 11:25:16,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:16,892 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 30 proven. 6 refuted. 0 times theorem prover too weak. 607 trivial. 0 not checked. [2022-11-20 11:25:16,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:16,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799142737] [2022-11-20 11:25:16,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799142737] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:25:16,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740223648] [2022-11-20 11:25:16,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:16,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:25:16,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:25:16,895 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:25:16,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 11:25:17,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:17,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 911 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:25:17,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:25:17,167 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2022-11-20 11:25:17,167 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:25:17,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740223648] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:17,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:25:17,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2022-11-20 11:25:17,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423480013] [2022-11-20 11:25:17,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:17,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:25:17,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:17,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:25:17,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:25:17,171 INFO L87 Difference]: Start difference. First operand 1518 states and 2071 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 11:25:17,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:25:17,428 INFO L93 Difference]: Finished difference Result 2804 states and 3882 transitions. [2022-11-20 11:25:17,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:25:17,429 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 269 [2022-11-20 11:25:17,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:25:17,436 INFO L225 Difference]: With dead ends: 2804 [2022-11-20 11:25:17,437 INFO L226 Difference]: Without dead ends: 1518 [2022-11-20 11:25:17,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:25:17,441 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 51 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:25:17,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 666 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:25:17,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2022-11-20 11:25:17,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1518. [2022-11-20 11:25:17,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1518 states, 1179 states have (on average 1.344359626802375) internal successors, (1585), 1207 states have internal predecessors, (1585), 231 states have call successors, (231), 107 states have call predecessors, (231), 107 states have return successors, (231), 211 states have call predecessors, (231), 231 states have call successors, (231) [2022-11-20 11:25:17,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1518 states to 1518 states and 2047 transitions. [2022-11-20 11:25:17,632 INFO L78 Accepts]: Start accepts. Automaton has 1518 states and 2047 transitions. Word has length 269 [2022-11-20 11:25:17,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:25:17,633 INFO L495 AbstractCegarLoop]: Abstraction has 1518 states and 2047 transitions. [2022-11-20 11:25:17,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 11:25:17,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1518 states and 2047 transitions. [2022-11-20 11:25:17,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2022-11-20 11:25:17,638 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:25:17,638 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:17,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:25:17,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-20 11:25:17,846 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:25:17,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:17,846 INFO L85 PathProgramCache]: Analyzing trace with hash 407381820, now seen corresponding path program 1 times [2022-11-20 11:25:17,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:17,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456891918] [2022-11-20 11:25:17,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:17,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:17,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:18,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:25:18,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:18,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:25:18,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:18,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 11:25:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:18,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:25:18,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:18,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:25:18,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:18,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:25:18,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:18,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:25:18,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:18,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 11:25:18,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:18,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 11:25:18,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:18,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 11:25:18,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:18,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:25:18,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:18,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 11:25:18,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:18,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-20 11:25:18,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:18,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:25:18,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:18,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:25:18,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:18,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 11:25:18,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:18,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-20 11:25:18,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:18,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-11-20 11:25:18,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:18,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-11-20 11:25:18,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:18,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-11-20 11:25:18,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:18,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-11-20 11:25:18,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:18,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-11-20 11:25:18,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:18,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-11-20 11:25:18,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:18,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-11-20 11:25:18,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:18,202 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 621 trivial. 0 not checked. [2022-11-20 11:25:18,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:18,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456891918] [2022-11-20 11:25:18,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456891918] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:25:18,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726326429] [2022-11-20 11:25:18,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:18,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:25:18,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:25:18,207 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:25:18,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 11:25:18,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:18,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 912 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:25:18,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:25:18,473 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 611 trivial. 0 not checked. [2022-11-20 11:25:18,473 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:25:18,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726326429] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:18,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:25:18,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2022-11-20 11:25:18,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104571865] [2022-11-20 11:25:18,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:18,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:25:18,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:18,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:25:18,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:25:18,478 INFO L87 Difference]: Start difference. First operand 1518 states and 2047 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 11:25:18,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:25:18,712 INFO L93 Difference]: Finished difference Result 2804 states and 3826 transitions. [2022-11-20 11:25:18,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:25:18,713 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 270 [2022-11-20 11:25:18,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:25:18,721 INFO L225 Difference]: With dead ends: 2804 [2022-11-20 11:25:18,722 INFO L226 Difference]: Without dead ends: 1566 [2022-11-20 11:25:18,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:25:18,726 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 15 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:25:18,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 689 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:25:18,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1566 states. [2022-11-20 11:25:18,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1566 to 1566. [2022-11-20 11:25:18,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1566 states, 1219 states have (on average 1.3461853978671041) internal successors, (1641), 1247 states have internal predecessors, (1641), 231 states have call successors, (231), 115 states have call predecessors, (231), 115 states have return successors, (231), 211 states have call predecessors, (231), 231 states have call successors, (231) [2022-11-20 11:25:18,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 2103 transitions. [2022-11-20 11:25:18,939 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 2103 transitions. Word has length 270 [2022-11-20 11:25:18,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:25:18,940 INFO L495 AbstractCegarLoop]: Abstraction has 1566 states and 2103 transitions. [2022-11-20 11:25:18,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 11:25:18,940 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 2103 transitions. [2022-11-20 11:25:18,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-11-20 11:25:18,945 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:25:18,945 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:18,963 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-20 11:25:19,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:25:19,152 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:25:19,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:19,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1806296465, now seen corresponding path program 1 times [2022-11-20 11:25:19,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:19,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915851611] [2022-11-20 11:25:19,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:19,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:19,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:19,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:25:19,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:19,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:25:19,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:19,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 11:25:19,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:19,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:25:19,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:19,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:25:19,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:19,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:25:19,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:19,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:25:19,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:19,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 11:25:19,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:19,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 11:25:19,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:19,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 11:25:19,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:19,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:25:19,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:19,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 11:25:19,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:19,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-20 11:25:19,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:19,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:25:19,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:19,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:25:19,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:19,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 11:25:19,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:19,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-20 11:25:19,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:19,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-11-20 11:25:19,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:19,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-11-20 11:25:19,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:19,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-11-20 11:25:19,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:19,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-11-20 11:25:19,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:19,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-11-20 11:25:19,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:19,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-11-20 11:25:19,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:19,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-11-20 11:25:19,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:19,699 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 643 trivial. 0 not checked. [2022-11-20 11:25:19,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:19,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915851611] [2022-11-20 11:25:19,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915851611] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:19,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:19,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:25:19,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950328217] [2022-11-20 11:25:19,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:19,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:25:19,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:19,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:25:19,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:25:19,702 INFO L87 Difference]: Start difference. First operand 1566 states and 2103 transitions. Second operand has 7 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-20 11:25:20,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:25:20,619 INFO L93 Difference]: Finished difference Result 2388 states and 3434 transitions. [2022-11-20 11:25:20,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:25:20,620 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 271 [2022-11-20 11:25:20,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:25:20,632 INFO L225 Difference]: With dead ends: 2388 [2022-11-20 11:25:20,632 INFO L226 Difference]: Without dead ends: 2386 [2022-11-20 11:25:20,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:25:20,634 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 230 mSDsluCounter, 1165 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 1486 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:25:20,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 1486 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 11:25:20,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2386 states. [2022-11-20 11:25:20,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2386 to 1614. [2022-11-20 11:25:20,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1614 states, 1251 states have (on average 1.337330135891287) internal successors, (1673), 1287 states have internal predecessors, (1673), 239 states have call successors, (239), 123 states have call predecessors, (239), 123 states have return successors, (239), 211 states have call predecessors, (239), 239 states have call successors, (239) [2022-11-20 11:25:20,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1614 states to 1614 states and 2151 transitions. [2022-11-20 11:25:20,875 INFO L78 Accepts]: Start accepts. Automaton has 1614 states and 2151 transitions. Word has length 271 [2022-11-20 11:25:20,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:25:20,876 INFO L495 AbstractCegarLoop]: Abstraction has 1614 states and 2151 transitions. [2022-11-20 11:25:20,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-20 11:25:20,876 INFO L276 IsEmpty]: Start isEmpty. Operand 1614 states and 2151 transitions. [2022-11-20 11:25:20,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2022-11-20 11:25:20,879 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:25:20,879 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:20,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-20 11:25:20,880 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:25:20,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:20,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1178133577, now seen corresponding path program 1 times [2022-11-20 11:25:20,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:20,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123306521] [2022-11-20 11:25:20,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:20,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:20,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:21,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:25:21,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:21,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:25:21,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:21,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 11:25:21,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:21,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:25:21,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:21,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:25:21,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:21,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:25:21,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:21,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:25:21,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:21,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 11:25:21,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:21,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 11:25:21,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:21,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 11:25:21,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:21,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:25:21,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:21,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 11:25:21,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:21,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-20 11:25:21,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:21,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:25:21,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:21,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:25:21,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:21,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 11:25:21,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:21,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-20 11:25:21,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:21,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-11-20 11:25:21,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:21,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-11-20 11:25:21,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:21,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-11-20 11:25:21,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:21,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-11-20 11:25:21,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:21,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-11-20 11:25:21,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:21,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-11-20 11:25:21,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:21,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-11-20 11:25:21,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:21,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-11-20 11:25:21,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:21,299 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 142 proven. 27 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2022-11-20 11:25:21,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:21,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123306521] [2022-11-20 11:25:21,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123306521] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:25:21,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682744425] [2022-11-20 11:25:21,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:21,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:25:21,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:25:21,302 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:25:21,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 11:25:21,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:21,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 937 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 11:25:21,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:25:21,851 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 251 proven. 37 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2022-11-20 11:25:21,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:25:22,301 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 146 proven. 23 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2022-11-20 11:25:22,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682744425] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:25:22,302 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:25:22,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 19 [2022-11-20 11:25:22,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145232141] [2022-11-20 11:25:22,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:25:22,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:25:22,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:22,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:25:22,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:25:22,304 INFO L87 Difference]: Start difference. First operand 1614 states and 2151 transitions. Second operand has 19 states, 19 states have (on average 8.0) internal successors, (152), 14 states have internal predecessors, (152), 5 states have call successors, (32), 5 states have call predecessors, (32), 9 states have return successors, (31), 8 states have call predecessors, (31), 5 states have call successors, (31) [2022-11-20 11:25:25,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:25:25,413 INFO L93 Difference]: Finished difference Result 4692 states and 6766 transitions. [2022-11-20 11:25:25,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-20 11:25:25,414 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 8.0) internal successors, (152), 14 states have internal predecessors, (152), 5 states have call successors, (32), 5 states have call predecessors, (32), 9 states have return successors, (31), 8 states have call predecessors, (31), 5 states have call successors, (31) Word has length 279 [2022-11-20 11:25:25,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:25:25,431 INFO L225 Difference]: With dead ends: 4692 [2022-11-20 11:25:25,431 INFO L226 Difference]: Without dead ends: 3358 [2022-11-20 11:25:25,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 643 GetRequests, 603 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=211, Invalid=1121, Unknown=0, NotChecked=0, Total=1332 [2022-11-20 11:25:25,437 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 677 mSDsluCounter, 2167 mSDsCounter, 0 mSdLazyCounter, 2390 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 2462 SdHoareTripleChecker+Invalid, 2612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 2390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:25:25,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 2462 Invalid, 2612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 2390 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-20 11:25:25,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3358 states. [2022-11-20 11:25:25,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3358 to 2408. [2022-11-20 11:25:25,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2408 states, 1862 states have (on average 1.3286788399570355) internal successors, (2474), 1914 states have internal predecessors, (2474), 356 states have call successors, (356), 183 states have call predecessors, (356), 189 states have return successors, (364), 318 states have call predecessors, (364), 356 states have call successors, (364) [2022-11-20 11:25:25,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2408 states to 2408 states and 3194 transitions. [2022-11-20 11:25:25,754 INFO L78 Accepts]: Start accepts. Automaton has 2408 states and 3194 transitions. Word has length 279 [2022-11-20 11:25:25,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:25:25,755 INFO L495 AbstractCegarLoop]: Abstraction has 2408 states and 3194 transitions. [2022-11-20 11:25:25,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.0) internal successors, (152), 14 states have internal predecessors, (152), 5 states have call successors, (32), 5 states have call predecessors, (32), 9 states have return successors, (31), 8 states have call predecessors, (31), 5 states have call successors, (31) [2022-11-20 11:25:25,755 INFO L276 IsEmpty]: Start isEmpty. Operand 2408 states and 3194 transitions. [2022-11-20 11:25:25,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2022-11-20 11:25:25,760 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:25:25,760 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:25,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 11:25:25,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-20 11:25:25,972 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:25:25,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:25,973 INFO L85 PathProgramCache]: Analyzing trace with hash -216519560, now seen corresponding path program 1 times [2022-11-20 11:25:25,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:25,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841749455] [2022-11-20 11:25:25,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:25,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:26,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:26,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:25:26,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:26,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:25:26,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:26,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 11:25:26,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:26,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:25:26,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:26,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:25:26,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:26,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:25:26,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:26,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:25:26,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:26,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 11:25:26,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:26,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 11:25:26,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:26,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 11:25:26,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:26,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:25:26,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:26,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 11:25:26,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:26,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-20 11:25:26,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:26,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:25:26,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:26,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:25:26,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:26,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 11:25:26,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:26,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-20 11:25:26,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:26,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-11-20 11:25:26,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:26,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-11-20 11:25:26,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:26,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-11-20 11:25:26,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:26,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-11-20 11:25:26,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:26,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-11-20 11:25:26,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:26,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-11-20 11:25:26,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:26,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-11-20 11:25:26,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:26,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-11-20 11:25:26,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:26,279 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2022-11-20 11:25:26,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:26,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841749455] [2022-11-20 11:25:26,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841749455] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:25:26,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398720598] [2022-11-20 11:25:26,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:26,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:25:26,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:25:26,281 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:25:26,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 11:25:26,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:26,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 936 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:25:26,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:25:26,537 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 611 trivial. 0 not checked. [2022-11-20 11:25:26,538 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:25:26,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398720598] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:26,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:25:26,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-11-20 11:25:26,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895907069] [2022-11-20 11:25:26,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:26,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:25:26,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:26,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:25:26,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:25:26,541 INFO L87 Difference]: Start difference. First operand 2408 states and 3194 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-20 11:25:26,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:25:26,820 INFO L93 Difference]: Finished difference Result 4649 states and 6264 transitions. [2022-11-20 11:25:26,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:25:26,821 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 279 [2022-11-20 11:25:26,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:25:26,832 INFO L225 Difference]: With dead ends: 4649 [2022-11-20 11:25:26,833 INFO L226 Difference]: Without dead ends: 2344 [2022-11-20 11:25:26,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:25:26,839 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 11 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:25:26,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 689 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:25:26,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2344 states. [2022-11-20 11:25:27,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2344 to 2344. [2022-11-20 11:25:27,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2344 states, 1818 states have (on average 1.3113311331133113) internal successors, (2384), 1870 states have internal predecessors, (2384), 340 states have call successors, (340), 183 states have call predecessors, (340), 185 states have return successors, (344), 298 states have call predecessors, (344), 340 states have call successors, (344) [2022-11-20 11:25:27,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2344 states to 2344 states and 3068 transitions. [2022-11-20 11:25:27,153 INFO L78 Accepts]: Start accepts. Automaton has 2344 states and 3068 transitions. Word has length 279 [2022-11-20 11:25:27,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:25:27,154 INFO L495 AbstractCegarLoop]: Abstraction has 2344 states and 3068 transitions. [2022-11-20 11:25:27,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-20 11:25:27,154 INFO L276 IsEmpty]: Start isEmpty. Operand 2344 states and 3068 transitions. [2022-11-20 11:25:27,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2022-11-20 11:25:27,158 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:25:27,159 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:27,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 11:25:27,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:25:27,366 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:25:27,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:27,366 INFO L85 PathProgramCache]: Analyzing trace with hash -487785417, now seen corresponding path program 1 times [2022-11-20 11:25:27,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:27,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132381825] [2022-11-20 11:25:27,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:27,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:27,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:27,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:25:27,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:27,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:25:27,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:27,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 11:25:27,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:27,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:25:27,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:27,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:25:27,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:27,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:25:27,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:27,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:25:27,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:27,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 11:25:27,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:27,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 11:25:27,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:27,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 11:25:27,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:27,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:25:27,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:27,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 11:25:27,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:27,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-20 11:25:27,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:27,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:25:27,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:27,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-20 11:25:27,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:27,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 11:25:27,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:27,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-11-20 11:25:27,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:27,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-11-20 11:25:27,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:27,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-11-20 11:25:27,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:27,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-11-20 11:25:27,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:27,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-11-20 11:25:27,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:27,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-11-20 11:25:27,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:27,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-11-20 11:25:27,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:27,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-11-20 11:25:27,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:27,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-11-20 11:25:27,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:27,566 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 121 proven. 19 refuted. 0 times theorem prover too weak. 554 trivial. 0 not checked. [2022-11-20 11:25:27,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:27,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132381825] [2022-11-20 11:25:27,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132381825] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:25:27,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665258529] [2022-11-20 11:25:27,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:27,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:25:27,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:25:27,569 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:25:27,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 11:25:27,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:27,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 937 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:25:27,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:25:27,827 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2022-11-20 11:25:27,827 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:25:27,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665258529] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:27,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:25:27,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-11-20 11:25:27,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338247524] [2022-11-20 11:25:27,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:27,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:25:27,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:27,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:25:27,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:25:27,829 INFO L87 Difference]: Start difference. First operand 2344 states and 3068 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 11:25:28,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:25:28,189 INFO L93 Difference]: Finished difference Result 4431 states and 5905 transitions. [2022-11-20 11:25:28,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:25:28,190 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 282 [2022-11-20 11:25:28,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:25:28,201 INFO L225 Difference]: With dead ends: 4431 [2022-11-20 11:25:28,201 INFO L226 Difference]: Without dead ends: 2172 [2022-11-20 11:25:28,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:25:28,207 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 8 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:25:28,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 692 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:25:28,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2172 states. [2022-11-20 11:25:28,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2172 to 2172. [2022-11-20 11:25:28,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2172 states, 1676 states have (on average 1.3048926014319808) internal successors, (2187), 1728 states have internal predecessors, (2187), 323 states have call successors, (323), 172 states have call predecessors, (323), 172 states have return successors, (323), 279 states have call predecessors, (323), 323 states have call successors, (323) [2022-11-20 11:25:28,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2172 states to 2172 states and 2833 transitions. [2022-11-20 11:25:28,463 INFO L78 Accepts]: Start accepts. Automaton has 2172 states and 2833 transitions. Word has length 282 [2022-11-20 11:25:28,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:25:28,464 INFO L495 AbstractCegarLoop]: Abstraction has 2172 states and 2833 transitions. [2022-11-20 11:25:28,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 11:25:28,464 INFO L276 IsEmpty]: Start isEmpty. Operand 2172 states and 2833 transitions. [2022-11-20 11:25:28,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-11-20 11:25:28,467 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:25:28,468 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 8, 8, 8, 7, 6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:28,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 11:25:28,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-11-20 11:25:28,674 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:25:28,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:28,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1403066076, now seen corresponding path program 1 times [2022-11-20 11:25:28,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:28,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004933655] [2022-11-20 11:25:28,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:28,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:28,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:29,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:25:29,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:29,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:25:29,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:29,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 11:25:29,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:29,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:25:29,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:29,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:25:29,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:29,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:25:29,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:29,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:25:29,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:29,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 11:25:29,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:29,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 11:25:29,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:29,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 11:25:29,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:29,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:25:29,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:29,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 11:25:29,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:29,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-20 11:25:29,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:29,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:25:29,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:29,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:25:29,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:29,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 11:25:29,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:29,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-20 11:25:29,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:29,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-11-20 11:25:29,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:29,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-11-20 11:25:29,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:29,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-11-20 11:25:29,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:29,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-11-20 11:25:29,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:29,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-11-20 11:25:29,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:29,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-11-20 11:25:29,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:29,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-11-20 11:25:29,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:29,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-11-20 11:25:29,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:29,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-11-20 11:25:29,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:29,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-11-20 11:25:29,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:29,685 INFO L134 CoverageAnalysis]: Checked inductivity of 733 backedges. 16 proven. 146 refuted. 0 times theorem prover too weak. 571 trivial. 0 not checked. [2022-11-20 11:25:29,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:29,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004933655] [2022-11-20 11:25:29,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004933655] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:25:29,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424921524] [2022-11-20 11:25:29,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:29,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:25:29,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:25:29,691 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:25:29,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 11:25:29,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:29,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 984 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 11:25:29,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:25:30,214 INFO L134 CoverageAnalysis]: Checked inductivity of 733 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2022-11-20 11:25:30,214 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:25:30,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424921524] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:30,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:25:30,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [15] total 23 [2022-11-20 11:25:30,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490393444] [2022-11-20 11:25:30,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:30,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:25:30,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:30,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:25:30,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=460, Unknown=0, NotChecked=0, Total=506 [2022-11-20 11:25:30,217 INFO L87 Difference]: Start difference. First operand 2172 states and 2833 transitions. Second operand has 10 states, 10 states have (on average 10.9) internal successors, (109), 9 states have internal predecessors, (109), 4 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2022-11-20 11:25:32,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:25:32,099 INFO L93 Difference]: Finished difference Result 8006 states and 10819 transitions. [2022-11-20 11:25:32,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-20 11:25:32,099 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.9) internal successors, (109), 9 states have internal predecessors, (109), 4 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) Word has length 294 [2022-11-20 11:25:32,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:25:32,130 INFO L225 Difference]: With dead ends: 8006 [2022-11-20 11:25:32,130 INFO L226 Difference]: Without dead ends: 6408 [2022-11-20 11:25:32,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=174, Invalid=1386, Unknown=0, NotChecked=0, Total=1560 [2022-11-20 11:25:32,137 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 1007 mSDsluCounter, 2765 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1014 SdHoareTripleChecker+Valid, 3206 SdHoareTripleChecker+Invalid, 1266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:25:32,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1014 Valid, 3206 Invalid, 1266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 11:25:32,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6408 states. [2022-11-20 11:25:32,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6408 to 5188. [2022-11-20 11:25:32,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5188 states, 3969 states have (on average 1.2950365331317713) internal successors, (5140), 4097 states have internal predecessors, (5140), 787 states have call successors, (787), 431 states have call predecessors, (787), 431 states have return successors, (787), 667 states have call predecessors, (787), 787 states have call successors, (787) [2022-11-20 11:25:32,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5188 states to 5188 states and 6714 transitions. [2022-11-20 11:25:32,929 INFO L78 Accepts]: Start accepts. Automaton has 5188 states and 6714 transitions. Word has length 294 [2022-11-20 11:25:32,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:25:32,930 INFO L495 AbstractCegarLoop]: Abstraction has 5188 states and 6714 transitions. [2022-11-20 11:25:32,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.9) internal successors, (109), 9 states have internal predecessors, (109), 4 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2022-11-20 11:25:32,930 INFO L276 IsEmpty]: Start isEmpty. Operand 5188 states and 6714 transitions. [2022-11-20 11:25:32,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2022-11-20 11:25:32,933 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:25:32,934 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:32,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 11:25:33,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-11-20 11:25:33,141 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:25:33,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:33,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1391814303, now seen corresponding path program 1 times [2022-11-20 11:25:33,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:33,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223800792] [2022-11-20 11:25:33,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:33,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:33,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:33,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:25:33,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:33,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:25:33,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:33,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 11:25:33,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:33,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:25:33,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:33,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:25:33,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:33,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:25:33,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:33,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:25:33,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:33,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 11:25:33,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:33,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 11:25:33,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:33,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 11:25:33,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:33,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:25:33,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:33,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 11:25:33,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:33,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-20 11:25:33,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:33,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:25:33,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:33,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:25:33,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:33,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 11:25:33,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:33,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-20 11:25:33,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:33,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-11-20 11:25:33,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:33,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-11-20 11:25:33,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:33,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-11-20 11:25:33,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:33,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-11-20 11:25:33,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:33,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-11-20 11:25:33,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:33,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-11-20 11:25:33,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:33,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-11-20 11:25:33,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:33,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-11-20 11:25:33,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:33,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-11-20 11:25:33,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:33,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-11-20 11:25:33,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:33,410 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 774 trivial. 0 not checked. [2022-11-20 11:25:33,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:33,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223800792] [2022-11-20 11:25:33,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223800792] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:33,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:33,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:25:33,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24695185] [2022-11-20 11:25:33,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:33,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:25:33,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:33,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:25:33,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:25:33,414 INFO L87 Difference]: Start difference. First operand 5188 states and 6714 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 6 states have internal predecessors, (97), 5 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2022-11-20 11:25:35,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:25:35,580 INFO L93 Difference]: Finished difference Result 16238 states and 23255 transitions. [2022-11-20 11:25:35,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:25:35,581 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 6 states have internal predecessors, (97), 5 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) Word has length 300 [2022-11-20 11:25:35,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:25:35,637 INFO L225 Difference]: With dead ends: 16238 [2022-11-20 11:25:35,637 INFO L226 Difference]: Without dead ends: 11564 [2022-11-20 11:25:35,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:25:35,649 INFO L413 NwaCegarLoop]: 538 mSDtfsCounter, 438 mSDsluCounter, 1236 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 1774 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:25:35,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 1774 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 11:25:35,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11564 states. [2022-11-20 11:25:36,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11564 to 5620. [2022-11-20 11:25:36,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5620 states, 4317 states have (on average 1.3055362520268705) internal successors, (5636), 4445 states have internal predecessors, (5636), 871 states have call successors, (871), 431 states have call predecessors, (871), 431 states have return successors, (871), 751 states have call predecessors, (871), 871 states have call successors, (871) [2022-11-20 11:25:36,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5620 states to 5620 states and 7378 transitions. [2022-11-20 11:25:36,768 INFO L78 Accepts]: Start accepts. Automaton has 5620 states and 7378 transitions. Word has length 300 [2022-11-20 11:25:36,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:25:36,770 INFO L495 AbstractCegarLoop]: Abstraction has 5620 states and 7378 transitions. [2022-11-20 11:25:36,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 6 states have internal predecessors, (97), 5 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2022-11-20 11:25:36,770 INFO L276 IsEmpty]: Start isEmpty. Operand 5620 states and 7378 transitions. [2022-11-20 11:25:36,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2022-11-20 11:25:36,775 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:25:36,776 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:36,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-20 11:25:36,776 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:25:36,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:36,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1072738013, now seen corresponding path program 1 times [2022-11-20 11:25:36,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:36,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865315881] [2022-11-20 11:25:36,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:36,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:36,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:37,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:25:37,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:37,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:25:37,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:37,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 11:25:37,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:37,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:25:37,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:37,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:25:37,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:37,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:25:37,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:37,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:25:37,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:37,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 11:25:37,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:37,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 11:25:37,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:37,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 11:25:37,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:37,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:25:37,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:37,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 11:25:37,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:37,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-20 11:25:37,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:37,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:25:37,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:37,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:25:37,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:37,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 11:25:37,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:37,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-20 11:25:37,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:37,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-11-20 11:25:37,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:37,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-11-20 11:25:37,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:37,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-11-20 11:25:37,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:37,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-11-20 11:25:37,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:37,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-11-20 11:25:37,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:37,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-11-20 11:25:37,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:37,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-11-20 11:25:37,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:37,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-11-20 11:25:37,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:37,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2022-11-20 11:25:37,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:37,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-11-20 11:25:37,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:37,211 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 771 trivial. 0 not checked. [2022-11-20 11:25:37,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:37,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865315881] [2022-11-20 11:25:37,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865315881] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:37,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:37,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:25:37,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991805413] [2022-11-20 11:25:37,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:37,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:25:37,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:37,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:25:37,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:25:37,214 INFO L87 Difference]: Start difference. First operand 5620 states and 7378 transitions. Second operand has 6 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 3 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-20 11:25:38,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:25:38,353 INFO L93 Difference]: Finished difference Result 10571 states and 13925 transitions. [2022-11-20 11:25:38,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:25:38,354 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 3 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) Word has length 300 [2022-11-20 11:25:38,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:25:38,381 INFO L225 Difference]: With dead ends: 10571 [2022-11-20 11:25:38,381 INFO L226 Difference]: Without dead ends: 5529 [2022-11-20 11:25:38,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:25:38,392 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 63 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:25:38,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 771 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 11:25:38,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5529 states. [2022-11-20 11:25:39,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5529 to 5529. [2022-11-20 11:25:39,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5529 states, 4241 states have (on average 1.303701957085593) internal successors, (5529), 4361 states have internal predecessors, (5529), 864 states have call successors, (864), 424 states have call predecessors, (864), 423 states have return successors, (863), 750 states have call predecessors, (863), 863 states have call successors, (863) [2022-11-20 11:25:39,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5529 states to 5529 states and 7256 transitions. [2022-11-20 11:25:39,069 INFO L78 Accepts]: Start accepts. Automaton has 5529 states and 7256 transitions. Word has length 300 [2022-11-20 11:25:39,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:25:39,070 INFO L495 AbstractCegarLoop]: Abstraction has 5529 states and 7256 transitions. [2022-11-20 11:25:39,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 3 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-20 11:25:39,070 INFO L276 IsEmpty]: Start isEmpty. Operand 5529 states and 7256 transitions. [2022-11-20 11:25:39,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-11-20 11:25:39,074 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:25:39,074 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:39,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-20 11:25:39,075 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:25:39,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:39,075 INFO L85 PathProgramCache]: Analyzing trace with hash -732264696, now seen corresponding path program 1 times [2022-11-20 11:25:39,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:39,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328251766] [2022-11-20 11:25:39,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:39,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:39,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:39,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:25:39,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:39,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:25:39,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:39,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 11:25:39,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:39,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:25:39,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:39,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:25:39,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:39,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:25:39,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:39,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:25:39,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:39,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 11:25:39,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:39,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 11:25:39,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:39,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 11:25:39,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:39,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:25:39,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:39,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 11:25:39,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:39,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-20 11:25:39,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:39,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:25:39,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:39,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:25:39,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:39,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 11:25:39,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:39,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-20 11:25:39,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:39,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-11-20 11:25:39,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:39,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-11-20 11:25:39,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:39,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-11-20 11:25:39,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:39,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-11-20 11:25:39,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:39,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-11-20 11:25:39,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:39,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-11-20 11:25:39,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:39,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-11-20 11:25:39,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:39,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-11-20 11:25:39,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:39,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-11-20 11:25:39,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:39,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-11-20 11:25:39,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:39,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-11-20 11:25:39,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:39,635 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 766 trivial. 0 not checked. [2022-11-20 11:25:39,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:39,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328251766] [2022-11-20 11:25:39,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328251766] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:25:39,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364198624] [2022-11-20 11:25:39,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:39,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:25:39,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:25:39,638 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:25:39,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 11:25:39,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:39,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 1014 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 11:25:39,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:25:40,086 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2022-11-20 11:25:40,086 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:25:40,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364198624] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:40,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:25:40,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 19 [2022-11-20 11:25:40,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182095722] [2022-11-20 11:25:40,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:40,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:25:40,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:40,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:25:40,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:25:40,089 INFO L87 Difference]: Start difference. First operand 5529 states and 7256 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-20 11:25:42,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:25:42,023 INFO L93 Difference]: Finished difference Result 15149 states and 20758 transitions. [2022-11-20 11:25:42,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:25:42,024 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 305 [2022-11-20 11:25:42,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:25:42,067 INFO L225 Difference]: With dead ends: 15149 [2022-11-20 11:25:42,067 INFO L226 Difference]: Without dead ends: 10147 [2022-11-20 11:25:42,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2022-11-20 11:25:42,081 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 392 mSDsluCounter, 1720 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 2187 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:25:42,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 2187 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 11:25:42,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10147 states. [2022-11-20 11:25:43,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10147 to 6705. [2022-11-20 11:25:43,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6705 states, 5137 states have (on average 1.2990072026474595) internal successors, (6673), 5287 states have internal predecessors, (6673), 1050 states have call successors, (1050), 518 states have call predecessors, (1050), 517 states have return successors, (1049), 906 states have call predecessors, (1049), 1049 states have call successors, (1049) [2022-11-20 11:25:43,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6705 states to 6705 states and 8772 transitions. [2022-11-20 11:25:43,165 INFO L78 Accepts]: Start accepts. Automaton has 6705 states and 8772 transitions. Word has length 305 [2022-11-20 11:25:43,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:25:43,166 INFO L495 AbstractCegarLoop]: Abstraction has 6705 states and 8772 transitions. [2022-11-20 11:25:43,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-20 11:25:43,167 INFO L276 IsEmpty]: Start isEmpty. Operand 6705 states and 8772 transitions. [2022-11-20 11:25:43,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-11-20 11:25:43,174 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:25:43,175 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:43,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 11:25:43,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-11-20 11:25:43,381 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:25:43,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:43,382 INFO L85 PathProgramCache]: Analyzing trace with hash -56931576, now seen corresponding path program 1 times [2022-11-20 11:25:43,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:43,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279130281] [2022-11-20 11:25:43,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:43,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:43,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:43,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:25:43,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:43,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:25:43,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:43,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 11:25:43,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:43,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:25:43,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:43,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:25:43,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:43,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:25:43,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:43,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:25:43,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:43,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 11:25:43,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:43,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 11:25:43,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:43,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 11:25:43,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:43,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:25:43,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:43,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 11:25:43,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:43,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-20 11:25:43,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:43,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:25:43,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:43,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:25:43,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:43,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 11:25:43,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:43,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-20 11:25:43,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:43,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-11-20 11:25:43,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:43,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-11-20 11:25:43,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:43,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-11-20 11:25:43,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:43,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-11-20 11:25:43,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:43,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-11-20 11:25:43,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:43,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-11-20 11:25:43,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:43,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-11-20 11:25:43,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:43,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-11-20 11:25:43,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:43,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-11-20 11:25:43,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:43,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-11-20 11:25:43,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:43,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-11-20 11:25:43,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:43,907 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2022-11-20 11:25:43,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:43,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279130281] [2022-11-20 11:25:43,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279130281] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:25:43,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987909611] [2022-11-20 11:25:43,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:43,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:25:43,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:25:43,910 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:25:43,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 11:25:44,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:44,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 1014 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 11:25:44,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:25:44,363 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 195 proven. 4 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2022-11-20 11:25:44,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:25:44,596 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2022-11-20 11:25:44,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987909611] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:25:44,597 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:25:44,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 18 [2022-11-20 11:25:44,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192256502] [2022-11-20 11:25:44,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:25:44,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:25:44,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:44,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:25:44,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:25:44,601 INFO L87 Difference]: Start difference. First operand 6705 states and 8772 transitions. Second operand has 18 states, 18 states have (on average 8.444444444444445) internal successors, (152), 16 states have internal predecessors, (152), 5 states have call successors, (36), 5 states have call predecessors, (36), 7 states have return successors, (36), 6 states have call predecessors, (36), 5 states have call successors, (36) [2022-11-20 11:25:51,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:25:51,634 INFO L93 Difference]: Finished difference Result 16853 states and 23030 transitions. [2022-11-20 11:25:51,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-20 11:25:51,634 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.444444444444445) internal successors, (152), 16 states have internal predecessors, (152), 5 states have call successors, (36), 5 states have call predecessors, (36), 7 states have return successors, (36), 6 states have call predecessors, (36), 5 states have call successors, (36) Word has length 305 [2022-11-20 11:25:51,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:25:51,676 INFO L225 Difference]: With dead ends: 16853 [2022-11-20 11:25:51,677 INFO L226 Difference]: Without dead ends: 10627 [2022-11-20 11:25:51,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 725 GetRequests, 667 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 883 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=505, Invalid=3035, Unknown=0, NotChecked=0, Total=3540 [2022-11-20 11:25:51,690 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 1516 mSDsluCounter, 4280 mSDsCounter, 0 mSdLazyCounter, 5808 mSolverCounterSat, 670 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1579 SdHoareTripleChecker+Valid, 4770 SdHoareTripleChecker+Invalid, 6478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 670 IncrementalHoareTripleChecker+Valid, 5808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:25:51,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1579 Valid, 4770 Invalid, 6478 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [670 Valid, 5808 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-20 11:25:51,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10627 states. [2022-11-20 11:25:52,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10627 to 5975. [2022-11-20 11:25:52,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5975 states, 4580 states have (on average 1.2945414847161572) internal successors, (5929), 4711 states have internal predecessors, (5929), 927 states have call successors, (927), 468 states have call predecessors, (927), 467 states have return successors, (926), 802 states have call predecessors, (926), 926 states have call successors, (926) [2022-11-20 11:25:52,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5975 states to 5975 states and 7782 transitions. [2022-11-20 11:25:52,614 INFO L78 Accepts]: Start accepts. Automaton has 5975 states and 7782 transitions. Word has length 305 [2022-11-20 11:25:52,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:25:52,615 INFO L495 AbstractCegarLoop]: Abstraction has 5975 states and 7782 transitions. [2022-11-20 11:25:52,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.444444444444445) internal successors, (152), 16 states have internal predecessors, (152), 5 states have call successors, (36), 5 states have call predecessors, (36), 7 states have return successors, (36), 6 states have call predecessors, (36), 5 states have call successors, (36) [2022-11-20 11:25:52,616 INFO L276 IsEmpty]: Start isEmpty. Operand 5975 states and 7782 transitions. [2022-11-20 11:25:52,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2022-11-20 11:25:52,621 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:25:52,621 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:52,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-20 11:25:52,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-11-20 11:25:52,828 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:25:52,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:52,829 INFO L85 PathProgramCache]: Analyzing trace with hash 996206097, now seen corresponding path program 1 times [2022-11-20 11:25:52,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:52,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252418654] [2022-11-20 11:25:52,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:52,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:52,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:52,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:25:52,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:52,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:25:52,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:52,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 11:25:52,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:53,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:25:53,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:53,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:25:53,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:53,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:25:53,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:53,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:25:53,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:53,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 11:25:53,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:53,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 11:25:53,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:53,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 11:25:53,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:53,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:25:53,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:53,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 11:25:53,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:53,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-20 11:25:53,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:53,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:25:53,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:53,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:25:53,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:53,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 11:25:53,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:53,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-20 11:25:53,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:53,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-11-20 11:25:53,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:53,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-11-20 11:25:53,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:53,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-11-20 11:25:53,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:53,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-11-20 11:25:53,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:53,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-11-20 11:25:53,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:53,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-11-20 11:25:53,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:53,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-11-20 11:25:53,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:53,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-11-20 11:25:53,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:53,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-11-20 11:25:53,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:53,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-11-20 11:25:53,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:53,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-11-20 11:25:53,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:53,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-11-20 11:25:53,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:53,119 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 716 trivial. 0 not checked. [2022-11-20 11:25:53,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:53,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252418654] [2022-11-20 11:25:53,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252418654] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:25:53,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:25:53,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:25:53,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178109013] [2022-11-20 11:25:53,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:25:53,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:25:53,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:53,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:25:53,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:25:53,126 INFO L87 Difference]: Start difference. First operand 5975 states and 7782 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-11-20 11:25:54,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:25:54,634 INFO L93 Difference]: Finished difference Result 9803 states and 12849 transitions. [2022-11-20 11:25:54,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:25:54,634 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 311 [2022-11-20 11:25:54,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:25:54,653 INFO L225 Difference]: With dead ends: 9803 [2022-11-20 11:25:54,653 INFO L226 Difference]: Without dead ends: 4608 [2022-11-20 11:25:54,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:25:54,664 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 356 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:25:54,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 1003 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 11:25:54,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4608 states. [2022-11-20 11:25:55,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4608 to 4582. [2022-11-20 11:25:55,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4582 states, 3519 states have (on average 1.2776356919579426) internal successors, (4496), 3616 states have internal predecessors, (4496), 716 states have call successors, (716), 346 states have call predecessors, (716), 346 states have return successors, (716), 619 states have call predecessors, (716), 716 states have call successors, (716) [2022-11-20 11:25:55,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4582 states to 4582 states and 5928 transitions. [2022-11-20 11:25:55,310 INFO L78 Accepts]: Start accepts. Automaton has 4582 states and 5928 transitions. Word has length 311 [2022-11-20 11:25:55,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:25:55,312 INFO L495 AbstractCegarLoop]: Abstraction has 4582 states and 5928 transitions. [2022-11-20 11:25:55,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-11-20 11:25:55,312 INFO L276 IsEmpty]: Start isEmpty. Operand 4582 states and 5928 transitions. [2022-11-20 11:25:55,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2022-11-20 11:25:55,322 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:25:55,322 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:25:55,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-20 11:25:55,323 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:25:55,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:25:55,324 INFO L85 PathProgramCache]: Analyzing trace with hash 197121380, now seen corresponding path program 1 times [2022-11-20 11:25:55,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:25:55,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775519735] [2022-11-20 11:25:55,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:55,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:25:55,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:56,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:25:56,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:56,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:25:56,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:56,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 11:25:56,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:56,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:25:56,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:56,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:25:56,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:56,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:25:56,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:56,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:25:56,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:56,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 11:25:56,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:56,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 11:25:56,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:56,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 11:25:56,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:56,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:25:56,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:56,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 11:25:56,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:56,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-20 11:25:56,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:56,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:25:56,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:56,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:25:56,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:56,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 11:25:56,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:56,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-20 11:25:56,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:56,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-11-20 11:25:56,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:56,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-11-20 11:25:56,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:56,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-11-20 11:25:56,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:56,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-11-20 11:25:56,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:56,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-11-20 11:25:56,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:56,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-11-20 11:25:56,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:56,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-11-20 11:25:56,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:56,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-11-20 11:25:56,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:56,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-11-20 11:25:56,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:56,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-11-20 11:25:56,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:56,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-11-20 11:25:56,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:56,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-11-20 11:25:56,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:56,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-11-20 11:25:56,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:56,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-11-20 11:25:56,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:56,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-11-20 11:25:56,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:56,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-11-20 11:25:56,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:56,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-11-20 11:25:56,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:56,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-11-20 11:25:56,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:56,353 INFO L134 CoverageAnalysis]: Checked inductivity of 916 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 885 trivial. 0 not checked. [2022-11-20 11:25:56,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:25:56,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775519735] [2022-11-20 11:25:56,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775519735] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:25:56,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636338376] [2022-11-20 11:25:56,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:25:56,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:25:56,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:25:56,369 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:25:56,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-20 11:25:56,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:25:56,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 1303 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-20 11:25:56,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:25:57,122 INFO L134 CoverageAnalysis]: Checked inductivity of 916 backedges. 240 proven. 92 refuted. 0 times theorem prover too weak. 584 trivial. 0 not checked. [2022-11-20 11:25:57,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:25:57,864 INFO L134 CoverageAnalysis]: Checked inductivity of 916 backedges. 34 proven. 72 refuted. 0 times theorem prover too weak. 810 trivial. 0 not checked. [2022-11-20 11:25:57,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636338376] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:25:57,865 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:25:57,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 13] total 28 [2022-11-20 11:25:57,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120803503] [2022-11-20 11:25:57,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:25:57,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-20 11:25:57,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:25:57,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-20 11:25:57,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2022-11-20 11:25:57,868 INFO L87 Difference]: Start difference. First operand 4582 states and 5928 transitions. Second operand has 28 states, 28 states have (on average 8.678571428571429) internal successors, (243), 24 states have internal predecessors, (243), 9 states have call successors, (65), 9 states have call predecessors, (65), 14 states have return successors, (65), 12 states have call predecessors, (65), 9 states have call successors, (65) [2022-11-20 11:26:31,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:26:31,075 INFO L93 Difference]: Finished difference Result 33443 states and 45951 transitions. [2022-11-20 11:26:31,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 227 states. [2022-11-20 11:26:31,076 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 8.678571428571429) internal successors, (243), 24 states have internal predecessors, (243), 9 states have call successors, (65), 9 states have call predecessors, (65), 14 states have return successors, (65), 12 states have call predecessors, (65), 9 states have call successors, (65) Word has length 361 [2022-11-20 11:26:31,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:26:31,217 INFO L225 Difference]: With dead ends: 33443 [2022-11-20 11:26:31,217 INFO L226 Difference]: Without dead ends: 29276 [2022-11-20 11:26:31,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1055 GetRequests, 804 SyntacticMatches, 1 SemanticMatches, 250 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24646 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=6010, Invalid=57242, Unknown=0, NotChecked=0, Total=63252 [2022-11-20 11:26:31,251 INFO L413 NwaCegarLoop]: 696 mSDtfsCounter, 6030 mSDsluCounter, 8088 mSDsCounter, 0 mSdLazyCounter, 12537 mSolverCounterSat, 5122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6030 SdHoareTripleChecker+Valid, 8784 SdHoareTripleChecker+Invalid, 17659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5122 IncrementalHoareTripleChecker+Valid, 12537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:26:31,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6030 Valid, 8784 Invalid, 17659 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5122 Valid, 12537 Invalid, 0 Unknown, 0 Unchecked, 13.3s Time] [2022-11-20 11:26:31,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29276 states. [2022-11-20 11:26:33,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29276 to 9758. [2022-11-20 11:26:33,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9758 states, 7439 states have (on average 1.267509073800242) internal successors, (9429), 7607 states have internal predecessors, (9429), 1593 states have call successors, (1593), 689 states have call predecessors, (1593), 725 states have return successors, (1665), 1461 states have call predecessors, (1665), 1593 states have call successors, (1665) [2022-11-20 11:26:33,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9758 states to 9758 states and 12687 transitions. [2022-11-20 11:26:33,405 INFO L78 Accepts]: Start accepts. Automaton has 9758 states and 12687 transitions. Word has length 361 [2022-11-20 11:26:33,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:26:33,406 INFO L495 AbstractCegarLoop]: Abstraction has 9758 states and 12687 transitions. [2022-11-20 11:26:33,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 8.678571428571429) internal successors, (243), 24 states have internal predecessors, (243), 9 states have call successors, (65), 9 states have call predecessors, (65), 14 states have return successors, (65), 12 states have call predecessors, (65), 9 states have call successors, (65) [2022-11-20 11:26:33,406 INFO L276 IsEmpty]: Start isEmpty. Operand 9758 states and 12687 transitions. [2022-11-20 11:26:33,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2022-11-20 11:26:33,431 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:26:33,431 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:26:33,439 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-11-20 11:26:33,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-11-20 11:26:33,638 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:26:33,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:26:33,638 INFO L85 PathProgramCache]: Analyzing trace with hash 118835525, now seen corresponding path program 1 times [2022-11-20 11:26:33,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:26:33,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426575995] [2022-11-20 11:26:33,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:26:33,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:26:33,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:33,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:26:33,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:33,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:26:33,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:33,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 11:26:33,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:33,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:26:33,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:33,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:26:33,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:33,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:26:33,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:33,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:26:33,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:33,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 11:26:33,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:33,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 11:26:33,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:33,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 11:26:33,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:33,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:26:33,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:33,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 11:26:33,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:33,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-20 11:26:33,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:33,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:26:33,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:33,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:26:33,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:33,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 11:26:33,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:33,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-20 11:26:33,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:33,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-11-20 11:26:33,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:33,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-11-20 11:26:33,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:33,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-11-20 11:26:33,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:33,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-11-20 11:26:33,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:33,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-11-20 11:26:33,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:33,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-11-20 11:26:33,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:33,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-11-20 11:26:33,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:33,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-11-20 11:26:33,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:33,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-11-20 11:26:33,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:33,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-11-20 11:26:33,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:33,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2022-11-20 11:26:33,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:33,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-11-20 11:26:33,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:33,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-11-20 11:26:33,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:33,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-11-20 11:26:33,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:33,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-11-20 11:26:33,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:33,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-11-20 11:26:33,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:33,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-11-20 11:26:33,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:33,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-11-20 11:26:33,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:33,937 INFO L134 CoverageAnalysis]: Checked inductivity of 916 backedges. 44 proven. 5 refuted. 0 times theorem prover too weak. 867 trivial. 0 not checked. [2022-11-20 11:26:33,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:26:33,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426575995] [2022-11-20 11:26:33,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426575995] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:26:33,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901642012] [2022-11-20 11:26:33,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:26:33,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:26:33,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:26:33,940 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:26:33,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-20 11:26:34,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:34,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 1301 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 11:26:34,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:26:34,391 INFO L134 CoverageAnalysis]: Checked inductivity of 916 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2022-11-20 11:26:34,391 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:26:34,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901642012] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:26:34,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:26:34,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2022-11-20 11:26:34,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23700847] [2022-11-20 11:26:34,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:26:34,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:26:34,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:26:34,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:26:34,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:26:34,394 INFO L87 Difference]: Start difference. First operand 9758 states and 12687 transitions. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 7 states have internal predecessors, (126), 3 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-20 11:26:37,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:26:37,644 INFO L93 Difference]: Finished difference Result 22242 states and 29455 transitions. [2022-11-20 11:26:37,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 11:26:37,644 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 7 states have internal predecessors, (126), 3 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) Word has length 361 [2022-11-20 11:26:37,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:26:37,698 INFO L225 Difference]: With dead ends: 22242 [2022-11-20 11:26:37,698 INFO L226 Difference]: Without dead ends: 13408 [2022-11-20 11:26:37,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 428 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:26:37,715 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 430 mSDsluCounter, 1960 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 2404 SdHoareTripleChecker+Invalid, 747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:26:37,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 2404 Invalid, 747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 11:26:37,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13408 states. [2022-11-20 11:26:39,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13408 to 8016. [2022-11-20 11:26:39,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8016 states, 6127 states have (on average 1.2438387465317446) internal successors, (7621), 6305 states have internal predecessors, (7621), 1235 states have call successors, (1235), 617 states have call predecessors, (1235), 653 states have return successors, (1283), 1093 states have call predecessors, (1283), 1235 states have call successors, (1283) [2022-11-20 11:26:39,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8016 states to 8016 states and 10139 transitions. [2022-11-20 11:26:39,323 INFO L78 Accepts]: Start accepts. Automaton has 8016 states and 10139 transitions. Word has length 361 [2022-11-20 11:26:39,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:26:39,324 INFO L495 AbstractCegarLoop]: Abstraction has 8016 states and 10139 transitions. [2022-11-20 11:26:39,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 7 states have internal predecessors, (126), 3 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (23), 4 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-20 11:26:39,324 INFO L276 IsEmpty]: Start isEmpty. Operand 8016 states and 10139 transitions. [2022-11-20 11:26:39,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2022-11-20 11:26:39,339 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:26:39,340 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:26:39,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-20 11:26:39,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-11-20 11:26:39,547 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:26:39,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:26:39,548 INFO L85 PathProgramCache]: Analyzing trace with hash 494839499, now seen corresponding path program 1 times [2022-11-20 11:26:39,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:26:39,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827007125] [2022-11-20 11:26:39,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:26:39,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:26:39,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:40,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:26:40,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:40,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:26:40,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:40,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 11:26:40,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:40,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:26:40,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:40,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:26:40,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:40,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:26:40,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:40,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:26:40,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:40,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 11:26:40,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:40,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 11:26:40,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:40,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 11:26:40,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:40,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:26:40,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:40,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 11:26:40,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:40,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-20 11:26:40,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:40,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:26:40,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:40,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:26:40,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:40,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 11:26:40,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:40,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-20 11:26:40,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:40,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-11-20 11:26:40,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:40,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-11-20 11:26:40,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:40,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-11-20 11:26:40,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:40,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-11-20 11:26:40,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:40,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-11-20 11:26:40,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:40,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-11-20 11:26:40,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:40,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-11-20 11:26:40,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:40,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-11-20 11:26:40,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:40,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-11-20 11:26:40,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:40,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-11-20 11:26:40,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:40,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-11-20 11:26:40,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:40,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-11-20 11:26:40,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:40,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-11-20 11:26:40,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:40,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-11-20 11:26:40,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:40,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2022-11-20 11:26:40,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:40,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-11-20 11:26:40,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:40,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-11-20 11:26:40,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:40,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-11-20 11:26:40,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:40,774 INFO L134 CoverageAnalysis]: Checked inductivity of 913 backedges. 24 proven. 16 refuted. 0 times theorem prover too weak. 873 trivial. 0 not checked. [2022-11-20 11:26:40,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:26:40,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827007125] [2022-11-20 11:26:40,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827007125] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:26:40,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570935828] [2022-11-20 11:26:40,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:26:40,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:26:40,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:26:40,777 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:26:40,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-20 11:26:41,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:26:41,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 1304 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-20 11:26:41,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:26:41,660 INFO L134 CoverageAnalysis]: Checked inductivity of 913 backedges. 206 proven. 119 refuted. 0 times theorem prover too weak. 588 trivial. 0 not checked. [2022-11-20 11:26:41,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:26:42,514 INFO L134 CoverageAnalysis]: Checked inductivity of 913 backedges. 33 proven. 70 refuted. 0 times theorem prover too weak. 810 trivial. 0 not checked. [2022-11-20 11:26:42,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570935828] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:26:42,515 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:26:42,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 13, 13] total 37 [2022-11-20 11:26:42,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614330763] [2022-11-20 11:26:42,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:26:42,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-20 11:26:42,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:26:42,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-20 11:26:42,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1234, Unknown=0, NotChecked=0, Total=1332 [2022-11-20 11:26:42,519 INFO L87 Difference]: Start difference. First operand 8016 states and 10139 transitions. Second operand has 37 states, 37 states have (on average 6.756756756756757) internal successors, (250), 32 states have internal predecessors, (250), 10 states have call successors, (68), 9 states have call predecessors, (68), 14 states have return successors, (68), 14 states have call predecessors, (68), 10 states have call successors, (68) [2022-11-20 11:27:17,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:27:17,582 INFO L93 Difference]: Finished difference Result 22978 states and 29441 transitions. [2022-11-20 11:27:17,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 246 states. [2022-11-20 11:27:17,583 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 6.756756756756757) internal successors, (250), 32 states have internal predecessors, (250), 10 states have call successors, (68), 9 states have call predecessors, (68), 14 states have return successors, (68), 14 states have call predecessors, (68), 10 states have call successors, (68) Word has length 362 [2022-11-20 11:27:17,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:27:17,651 INFO L225 Difference]: With dead ends: 22978 [2022-11-20 11:27:17,651 INFO L226 Difference]: Without dead ends: 15794 [2022-11-20 11:27:17,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1077 GetRequests, 799 SyntacticMatches, 1 SemanticMatches, 277 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29505 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=5897, Invalid=71665, Unknown=0, NotChecked=0, Total=77562 [2022-11-20 11:27:17,671 INFO L413 NwaCegarLoop]: 947 mSDtfsCounter, 4343 mSDsluCounter, 19465 mSDsCounter, 0 mSdLazyCounter, 25728 mSolverCounterSat, 3362 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4344 SdHoareTripleChecker+Valid, 20412 SdHoareTripleChecker+Invalid, 29090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3362 IncrementalHoareTripleChecker+Valid, 25728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:27:17,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4344 Valid, 20412 Invalid, 29090 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3362 Valid, 25728 Invalid, 0 Unknown, 0 Unchecked, 19.0s Time] [2022-11-20 11:27:17,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15794 states. [2022-11-20 11:27:19,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15794 to 8846. [2022-11-20 11:27:19,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8846 states, 6772 states have (on average 1.2427643236857648) internal successors, (8416), 6957 states have internal predecessors, (8416), 1332 states have call successors, (1332), 693 states have call predecessors, (1332), 741 states have return successors, (1404), 1195 states have call predecessors, (1404), 1332 states have call successors, (1404) [2022-11-20 11:27:19,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8846 states to 8846 states and 11152 transitions. [2022-11-20 11:27:19,694 INFO L78 Accepts]: Start accepts. Automaton has 8846 states and 11152 transitions. Word has length 362 [2022-11-20 11:27:19,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:27:19,695 INFO L495 AbstractCegarLoop]: Abstraction has 8846 states and 11152 transitions. [2022-11-20 11:27:19,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 6.756756756756757) internal successors, (250), 32 states have internal predecessors, (250), 10 states have call successors, (68), 9 states have call predecessors, (68), 14 states have return successors, (68), 14 states have call predecessors, (68), 10 states have call successors, (68) [2022-11-20 11:27:19,695 INFO L276 IsEmpty]: Start isEmpty. Operand 8846 states and 11152 transitions. [2022-11-20 11:27:19,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2022-11-20 11:27:19,716 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:27:19,716 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:27:19,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-20 11:27:19,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-11-20 11:27:19,924 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:27:19,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:27:19,924 INFO L85 PathProgramCache]: Analyzing trace with hash 586029794, now seen corresponding path program 1 times [2022-11-20 11:27:19,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:27:19,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225035377] [2022-11-20 11:27:19,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:27:19,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:27:19,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:20,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:27:20,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:20,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:27:20,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:20,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 11:27:20,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:20,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:27:20,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:20,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:27:20,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:20,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:27:20,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:20,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:27:20,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:20,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 11:27:20,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:20,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 11:27:20,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:20,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 11:27:20,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:20,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:27:20,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:20,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 11:27:20,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:20,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-20 11:27:20,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:20,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:27:20,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:20,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:27:20,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:20,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 11:27:20,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:20,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-20 11:27:20,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:20,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-11-20 11:27:20,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:20,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-11-20 11:27:20,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:20,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-11-20 11:27:20,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:20,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-11-20 11:27:20,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:20,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-11-20 11:27:20,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:20,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-11-20 11:27:20,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:20,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-11-20 11:27:20,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:20,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-11-20 11:27:20,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:20,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-11-20 11:27:20,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:20,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-11-20 11:27:20,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:20,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-11-20 11:27:20,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:20,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-11-20 11:27:20,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:20,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-11-20 11:27:20,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:20,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-11-20 11:27:20,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:20,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-11-20 11:27:20,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:20,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-11-20 11:27:20,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:20,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-11-20 11:27:20,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:20,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-11-20 11:27:20,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:20,163 INFO L134 CoverageAnalysis]: Checked inductivity of 913 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 869 trivial. 0 not checked. [2022-11-20 11:27:20,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:27:20,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225035377] [2022-11-20 11:27:20,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225035377] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:27:20,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:27:20,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:27:20,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477592795] [2022-11-20 11:27:20,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:27:20,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:27:20,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:27:20,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:27:20,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:27:20,168 INFO L87 Difference]: Start difference. First operand 8846 states and 11152 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2022-11-20 11:27:22,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:27:22,387 INFO L93 Difference]: Finished difference Result 17937 states and 22583 transitions. [2022-11-20 11:27:22,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:27:22,387 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) Word has length 363 [2022-11-20 11:27:22,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:27:22,413 INFO L225 Difference]: With dead ends: 17937 [2022-11-20 11:27:22,414 INFO L226 Difference]: Without dead ends: 8702 [2022-11-20 11:27:22,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:27:22,427 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 114 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:27:22,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 594 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 11:27:22,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8702 states. [2022-11-20 11:27:24,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8702 to 8702. [2022-11-20 11:27:24,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8702 states, 6676 states have (on average 1.212552426602756) internal successors, (8095), 6837 states have internal predecessors, (8095), 1332 states have call successors, (1332), 693 states have call predecessors, (1332), 693 states have return successors, (1332), 1171 states have call predecessors, (1332), 1332 states have call successors, (1332) [2022-11-20 11:27:24,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8702 states to 8702 states and 10759 transitions. [2022-11-20 11:27:24,411 INFO L78 Accepts]: Start accepts. Automaton has 8702 states and 10759 transitions. Word has length 363 [2022-11-20 11:27:24,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:27:24,411 INFO L495 AbstractCegarLoop]: Abstraction has 8702 states and 10759 transitions. [2022-11-20 11:27:24,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2022-11-20 11:27:24,412 INFO L276 IsEmpty]: Start isEmpty. Operand 8702 states and 10759 transitions. [2022-11-20 11:27:24,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2022-11-20 11:27:24,425 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:27:24,425 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:27:24,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-11-20 11:27:24,425 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:27:24,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:27:24,426 INFO L85 PathProgramCache]: Analyzing trace with hash -2058777752, now seen corresponding path program 1 times [2022-11-20 11:27:24,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:27:24,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922128009] [2022-11-20 11:27:24,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:27:24,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:27:24,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:25,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:27:25,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:25,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:27:25,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:25,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 11:27:25,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:25,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:27:25,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:25,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:27:25,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:25,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:27:25,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:25,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:27:25,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:25,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 11:27:25,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:25,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 11:27:25,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:25,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 11:27:25,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:25,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:27:25,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:25,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 11:27:25,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:25,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-20 11:27:25,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:25,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:27:25,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:25,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:27:25,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:25,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 11:27:25,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:25,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-20 11:27:25,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:25,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-11-20 11:27:25,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:25,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-11-20 11:27:25,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:25,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-11-20 11:27:25,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:25,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-11-20 11:27:25,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:25,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-11-20 11:27:25,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:25,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-11-20 11:27:25,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:25,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-11-20 11:27:25,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:25,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-11-20 11:27:25,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:25,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-11-20 11:27:25,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:25,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-11-20 11:27:25,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:25,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-11-20 11:27:25,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:25,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2022-11-20 11:27:25,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:25,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2022-11-20 11:27:25,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:25,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-11-20 11:27:25,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:25,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-11-20 11:27:25,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:25,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-11-20 11:27:25,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:25,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-11-20 11:27:25,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:25,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-11-20 11:27:25,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:25,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-11-20 11:27:25,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:25,587 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 16 proven. 24 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2022-11-20 11:27:25,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:27:25,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922128009] [2022-11-20 11:27:25,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922128009] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:27:25,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249805893] [2022-11-20 11:27:25,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:27:25,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:27:25,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:27:25,591 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:27:25,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-20 11:27:25,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:27:25,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 1329 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-20 11:27:25,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:27:26,428 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 274 proven. 102 refuted. 0 times theorem prover too weak. 594 trivial. 0 not checked. [2022-11-20 11:27:26,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:27:27,153 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 56 proven. 53 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2022-11-20 11:27:27,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249805893] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:27:27,153 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:27:27,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 13] total 34 [2022-11-20 11:27:27,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323603226] [2022-11-20 11:27:27,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:27:27,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-20 11:27:27,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:27:27,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-20 11:27:27,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1033, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 11:27:27,156 INFO L87 Difference]: Start difference. First operand 8702 states and 10759 transitions. Second operand has 34 states, 34 states have (on average 7.705882352941177) internal successors, (262), 29 states have internal predecessors, (262), 9 states have call successors, (70), 9 states have call predecessors, (70), 14 states have return successors, (70), 13 states have call predecessors, (70), 9 states have call successors, (70) [2022-11-20 11:30:30,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:30:30,028 INFO L93 Difference]: Finished difference Result 137886 states and 183262 transitions. [2022-11-20 11:30:30,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1027 states. [2022-11-20 11:30:30,028 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 7.705882352941177) internal successors, (262), 29 states have internal predecessors, (262), 9 states have call successors, (70), 9 states have call predecessors, (70), 14 states have return successors, (70), 13 states have call predecessors, (70), 9 states have call successors, (70) Word has length 373 [2022-11-20 11:30:30,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:30:30,728 INFO L225 Difference]: With dead ends: 137886 [2022-11-20 11:30:30,728 INFO L226 Difference]: Without dead ends: 130798 [2022-11-20 11:30:30,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2008 GetRequests, 951 SyntacticMatches, 1 SemanticMatches, 1056 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523420 ImplicationChecksByTransitivity, 78.9s TimeCoverageRelationStatistics Valid=43368, Invalid=1074938, Unknown=0, NotChecked=0, Total=1118306 [2022-11-20 11:30:30,916 INFO L413 NwaCegarLoop]: 2548 mSDtfsCounter, 7267 mSDsluCounter, 43943 mSDsCounter, 0 mSdLazyCounter, 66043 mSolverCounterSat, 16970 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7268 SdHoareTripleChecker+Valid, 46491 SdHoareTripleChecker+Invalid, 83013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 16970 IncrementalHoareTripleChecker+Valid, 66043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:30:30,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7268 Valid, 46491 Invalid, 83013 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [16970 Valid, 66043 Invalid, 0 Unknown, 0 Unchecked, 51.3s Time] [2022-11-20 11:30:31,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130798 states. [2022-11-20 11:30:40,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130798 to 25850. [2022-11-20 11:30:40,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25850 states, 19656 states have (on average 1.2178469678469679) internal successors, (23938), 20110 states have internal predecessors, (23938), 4231 states have call successors, (4231), 1962 states have call predecessors, (4231), 1962 states have return successors, (4231), 3777 states have call predecessors, (4231), 4231 states have call successors, (4231) [2022-11-20 11:30:40,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25850 states to 25850 states and 32400 transitions. [2022-11-20 11:30:40,264 INFO L78 Accepts]: Start accepts. Automaton has 25850 states and 32400 transitions. Word has length 373 [2022-11-20 11:30:40,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:30:40,265 INFO L495 AbstractCegarLoop]: Abstraction has 25850 states and 32400 transitions. [2022-11-20 11:30:40,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 7.705882352941177) internal successors, (262), 29 states have internal predecessors, (262), 9 states have call successors, (70), 9 states have call predecessors, (70), 14 states have return successors, (70), 13 states have call predecessors, (70), 9 states have call successors, (70) [2022-11-20 11:30:40,266 INFO L276 IsEmpty]: Start isEmpty. Operand 25850 states and 32400 transitions. [2022-11-20 11:30:40,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2022-11-20 11:30:40,311 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:30:40,312 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:30:40,323 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-11-20 11:30:40,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b81a0d37-5d35-4022-86e5-300b116c9df9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:30:40,519 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:30:40,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:30:40,519 INFO L85 PathProgramCache]: Analyzing trace with hash 12867067, now seen corresponding path program 1 times [2022-11-20 11:30:40,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:30:40,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146933878] [2022-11-20 11:30:40,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:30:40,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:30:40,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:40,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:30:40,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:40,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:30:40,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:40,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 11:30:40,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:40,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:30:40,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:40,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:30:40,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:40,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:30:40,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:40,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:30:40,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:40,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 11:30:40,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:40,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 11:30:40,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:40,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-20 11:30:40,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:40,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:30:40,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:40,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 11:30:40,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:40,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-11-20 11:30:40,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:40,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:30:40,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:40,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-20 11:30:40,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:40,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 11:30:40,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:40,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-11-20 11:30:40,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:40,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-11-20 11:30:40,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:40,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-11-20 11:30:40,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:40,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-11-20 11:30:40,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:40,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-11-20 11:30:40,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:40,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-11-20 11:30:40,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:40,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-11-20 11:30:40,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:40,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-11-20 11:30:40,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:40,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-11-20 11:30:40,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:40,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-11-20 11:30:40,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:40,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-11-20 11:30:40,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:40,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-11-20 11:30:40,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:40,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2022-11-20 11:30:40,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:40,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2022-11-20 11:30:40,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:40,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2022-11-20 11:30:40,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:40,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2022-11-20 11:30:40,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:40,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2022-11-20 11:30:40,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:40,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2022-11-20 11:30:40,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:40,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-11-20 11:30:40,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:40,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-11-20 11:30:40,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:40,919 INFO L134 CoverageAnalysis]: Checked inductivity of 969 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 941 trivial. 0 not checked. [2022-11-20 11:30:40,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:30:40,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146933878] [2022-11-20 11:30:40,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146933878] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:30:40,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:30:40,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 11:30:40,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626593465] [2022-11-20 11:30:40,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:30:40,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:30:40,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:30:40,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:30:40,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:30:40,923 INFO L87 Difference]: Start difference. First operand 25850 states and 32400 transitions. Second operand has 10 states, 10 states have (on average 11.9) internal successors, (119), 8 states have internal predecessors, (119), 3 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (25), 4 states have call predecessors, (25), 3 states have call successors, (25)