./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49030a27-9a56-44a5-9054-4e0000f31c1b/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49030a27-9a56-44a5-9054-4e0000f31c1b/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_49030a27-9a56-44a5-9054-4e0000f31c1b/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49030a27-9a56-44a5-9054-4e0000f31c1b/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49030a27-9a56-44a5-9054-4e0000f31c1b/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_49030a27-9a56-44a5-9054-4e0000f31c1b/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 34327c45f5bb67454914f640ebf6bf1380406f6d81b1c1440537dbf8cffc8ffd --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 10:51:11,567 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:51:11,570 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:51:11,621 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:51:11,621 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:51:11,626 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:51:11,628 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:51:11,632 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:51:11,635 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:51:11,641 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:51:11,643 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:51:11,646 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:51:11,647 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:51:11,650 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:51:11,654 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:51:11,656 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:51:11,658 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:51:11,659 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:51:11,661 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:51:11,669 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:51:11,671 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:51:11,674 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:51:11,676 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:51:11,677 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:51:11,689 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:51:11,691 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:51:11,691 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:51:11,693 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:51:11,694 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:51:11,696 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:51:11,696 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:51:11,697 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:51:11,700 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:51:11,701 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:51:11,703 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:51:11,703 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:51:11,704 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:51:11,704 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:51:11,705 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:51:11,707 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:51:11,708 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:51:11,709 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49030a27-9a56-44a5-9054-4e0000f31c1b/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 10:51:11,759 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:51:11,760 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:51:11,761 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:51:11,761 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:51:11,762 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:51:11,762 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:51:11,763 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:51:11,764 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:51:11,764 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:51:11,764 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:51:11,765 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:51:11,766 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:51:11,766 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:51:11,766 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:51:11,766 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:51:11,767 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:51:11,767 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:51:11,767 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:51:11,767 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:51:11,768 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:51:11,768 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:51:11,768 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:51:11,768 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:51:11,769 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:51:11,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:51:11,769 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:51:11,770 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:51:11,770 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:51:11,771 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:51:11,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:51:11,771 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:51:11,771 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:51:11,772 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:51:11,772 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_49030a27-9a56-44a5-9054-4e0000f31c1b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49030a27-9a56-44a5-9054-4e0000f31c1b/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34327c45f5bb67454914f640ebf6bf1380406f6d81b1c1440537dbf8cffc8ffd [2022-11-20 10:51:12,123 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:51:12,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:51:12,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:51:12,154 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:51:12,155 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:51:12,156 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49030a27-9a56-44a5-9054-4e0000f31c1b/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c [2022-11-20 10:51:15,518 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:51:15,844 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:51:15,845 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49030a27-9a56-44a5-9054-4e0000f31c1b/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c [2022-11-20 10:51:15,867 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49030a27-9a56-44a5-9054-4e0000f31c1b/bin/uautomizer-ug76WZFUDN/data/06644dcb1/00ae0daa55c84e6ca0c795c2e34a20f2/FLAG7fa0f48ba [2022-11-20 10:51:15,894 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49030a27-9a56-44a5-9054-4e0000f31c1b/bin/uautomizer-ug76WZFUDN/data/06644dcb1/00ae0daa55c84e6ca0c795c2e34a20f2 [2022-11-20 10:51:15,898 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:51:15,900 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:51:15,902 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:51:15,902 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:51:15,907 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:51:15,908 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:51:15" (1/1) ... [2022-11-20 10:51:15,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@383b8aa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:15, skipping insertion in model container [2022-11-20 10:51:15,910 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:51:15" (1/1) ... [2022-11-20 10:51:15,920 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:51:16,000 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:51:16,583 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_49030a27-9a56-44a5-9054-4e0000f31c1b/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c[65471,65484] [2022-11-20 10:51:16,588 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:51:16,606 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:51:16,810 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_49030a27-9a56-44a5-9054-4e0000f31c1b/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c[65471,65484] [2022-11-20 10:51:16,823 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:51:16,845 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:51:16,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:16 WrapperNode [2022-11-20 10:51:16,847 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:51:16,850 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:51:16,850 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:51:16,850 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:51:16,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:16" (1/1) ... [2022-11-20 10:51:16,899 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:16" (1/1) ... [2022-11-20 10:51:17,060 INFO L138 Inliner]: procedures = 24, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 2051 [2022-11-20 10:51:17,061 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:51:17,063 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:51:17,063 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:51:17,063 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:51:17,075 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:16" (1/1) ... [2022-11-20 10:51:17,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:16" (1/1) ... [2022-11-20 10:51:17,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:16" (1/1) ... [2022-11-20 10:51:17,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:16" (1/1) ... [2022-11-20 10:51:17,116 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:16" (1/1) ... [2022-11-20 10:51:17,143 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:16" (1/1) ... [2022-11-20 10:51:17,149 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:16" (1/1) ... [2022-11-20 10:51:17,157 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:16" (1/1) ... [2022-11-20 10:51:17,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:51:17,171 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:51:17,171 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:51:17,172 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:51:17,173 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:16" (1/1) ... [2022-11-20 10:51:17,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:51:17,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49030a27-9a56-44a5-9054-4e0000f31c1b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:51:17,214 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49030a27-9a56-44a5-9054-4e0000f31c1b/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:51:17,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49030a27-9a56-44a5-9054-4e0000f31c1b/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:51:17,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:51:17,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:51:17,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:51:17,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:51:17,605 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:51:17,608 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:51:19,812 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:51:19,845 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:51:19,846 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 10:51:19,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:51:19 BoogieIcfgContainer [2022-11-20 10:51:19,853 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:51:19,857 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:51:19,857 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:51:19,861 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:51:19,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:51:15" (1/3) ... [2022-11-20 10:51:19,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2750bf59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:51:19, skipping insertion in model container [2022-11-20 10:51:19,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:16" (2/3) ... [2022-11-20 10:51:19,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2750bf59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:51:19, skipping insertion in model container [2022-11-20 10:51:19,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:51:19" (3/3) ... [2022-11-20 10:51:19,876 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c [2022-11-20 10:51:19,912 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:51:19,912 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 10:51:19,996 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:51:20,013 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;@15c68191, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:51:20,013 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 10:51:20,026 INFO L276 IsEmpty]: Start isEmpty. Operand has 696 states, 694 states have (on average 1.8703170028818443) internal successors, (1298), 695 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:20,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-11-20 10:51:20,063 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:51:20,064 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:51:20,064 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:51:20,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:20,080 INFO L85 PathProgramCache]: Analyzing trace with hash 46633421, now seen corresponding path program 1 times [2022-11-20 10:51:20,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:20,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054336664] [2022-11-20 10:51:20,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:20,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:20,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:20,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:20,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:20,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054336664] [2022-11-20 10:51:20,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054336664] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:20,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:20,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:51:20,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179057095] [2022-11-20 10:51:20,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:20,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 10:51:20,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:20,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 10:51:20,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 10:51:20,838 INFO L87 Difference]: Start difference. First operand has 696 states, 694 states have (on average 1.8703170028818443) internal successors, (1298), 695 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:20,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:51:20,942 INFO L93 Difference]: Finished difference Result 842 states and 1560 transitions. [2022-11-20 10:51:20,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 10:51:20,956 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 153 [2022-11-20 10:51:20,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:51:20,988 INFO L225 Difference]: With dead ends: 842 [2022-11-20 10:51:20,988 INFO L226 Difference]: Without dead ends: 692 [2022-11-20 10:51:20,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 10:51:21,000 INFO L413 NwaCegarLoop]: 1295 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1295 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:51:21,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1295 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:51:21,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2022-11-20 10:51:21,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 692. [2022-11-20 10:51:21,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 691 states have (on average 1.8683068017366136) internal successors, (1291), 691 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:21,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1291 transitions. [2022-11-20 10:51:21,126 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1291 transitions. Word has length 153 [2022-11-20 10:51:21,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:51:21,132 INFO L495 AbstractCegarLoop]: Abstraction has 692 states and 1291 transitions. [2022-11-20 10:51:21,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:21,133 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1291 transitions. [2022-11-20 10:51:21,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-11-20 10:51:21,147 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:51:21,147 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:51:21,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:51:21,148 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:51:21,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:21,149 INFO L85 PathProgramCache]: Analyzing trace with hash -462839669, now seen corresponding path program 1 times [2022-11-20 10:51:21,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:21,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292552141] [2022-11-20 10:51:21,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:21,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:21,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:21,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:21,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:21,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292552141] [2022-11-20 10:51:21,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292552141] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:21,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:21,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:51:21,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124351520] [2022-11-20 10:51:21,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:21,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:51:21,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:21,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:51:21,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:51:21,882 INFO L87 Difference]: Start difference. First operand 692 states and 1291 transitions. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:22,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:51:22,087 INFO L93 Difference]: Finished difference Result 837 states and 1550 transitions. [2022-11-20 10:51:22,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:51:22,088 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 153 [2022-11-20 10:51:22,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:51:22,092 INFO L225 Difference]: With dead ends: 837 [2022-11-20 10:51:22,093 INFO L226 Difference]: Without dead ends: 692 [2022-11-20 10:51:22,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:51:22,096 INFO L413 NwaCegarLoop]: 1289 mSDtfsCounter, 3 mSDsluCounter, 3799 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 5088 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:51:22,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 5088 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:51:22,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2022-11-20 10:51:22,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 692. [2022-11-20 10:51:22,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 691 states have (on average 1.7742402315484804) internal successors, (1226), 691 states have internal predecessors, (1226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:22,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1226 transitions. [2022-11-20 10:51:22,121 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1226 transitions. Word has length 153 [2022-11-20 10:51:22,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:51:22,121 INFO L495 AbstractCegarLoop]: Abstraction has 692 states and 1226 transitions. [2022-11-20 10:51:22,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:22,122 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1226 transitions. [2022-11-20 10:51:22,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-11-20 10:51:22,126 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:51:22,127 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:51:22,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:51:22,128 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:51:22,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:22,128 INFO L85 PathProgramCache]: Analyzing trace with hash 2032916201, now seen corresponding path program 1 times [2022-11-20 10:51:22,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:22,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153410352] [2022-11-20 10:51:22,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:22,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:22,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:22,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:22,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:22,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153410352] [2022-11-20 10:51:22,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153410352] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:22,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:22,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:51:22,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104758031] [2022-11-20 10:51:22,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:22,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:51:22,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:22,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:51:22,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:51:22,552 INFO L87 Difference]: Start difference. First operand 692 states and 1226 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:22,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:51:22,647 INFO L93 Difference]: Finished difference Result 960 states and 1710 transitions. [2022-11-20 10:51:22,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:51:22,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 217 [2022-11-20 10:51:22,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:51:22,657 INFO L225 Difference]: With dead ends: 960 [2022-11-20 10:51:22,658 INFO L226 Difference]: Without dead ends: 819 [2022-11-20 10:51:22,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:51:22,671 INFO L413 NwaCegarLoop]: 1225 mSDtfsCounter, 221 mSDsluCounter, 1157 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 2382 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 10:51:22,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 2382 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:51:22,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2022-11-20 10:51:22,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 817. [2022-11-20 10:51:22,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 816 states have (on average 1.775735294117647) internal successors, (1449), 816 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:22,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1449 transitions. [2022-11-20 10:51:22,717 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1449 transitions. Word has length 217 [2022-11-20 10:51:22,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:51:22,719 INFO L495 AbstractCegarLoop]: Abstraction has 817 states and 1449 transitions. [2022-11-20 10:51:22,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:22,720 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1449 transitions. [2022-11-20 10:51:22,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-11-20 10:51:22,725 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:51:22,726 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:51:22,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 10:51:22,727 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:51:22,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:22,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1022770877, now seen corresponding path program 1 times [2022-11-20 10:51:22,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:22,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840740965] [2022-11-20 10:51:22,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:22,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:22,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:23,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:23,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:23,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840740965] [2022-11-20 10:51:23,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840740965] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:23,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:23,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:51:23,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449093895] [2022-11-20 10:51:23,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:23,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:51:23,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:23,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:51:23,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:51:23,073 INFO L87 Difference]: Start difference. First operand 817 states and 1449 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:23,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:51:23,119 INFO L93 Difference]: Finished difference Result 1325 states and 2361 transitions. [2022-11-20 10:51:23,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:51:23,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 221 [2022-11-20 10:51:23,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:51:23,128 INFO L225 Difference]: With dead ends: 1325 [2022-11-20 10:51:23,128 INFO L226 Difference]: Without dead ends: 1059 [2022-11-20 10:51:23,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:51:23,144 INFO L413 NwaCegarLoop]: 1224 mSDtfsCounter, 221 mSDsluCounter, 1166 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 2390 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:51:23,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 2390 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:51:23,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2022-11-20 10:51:23,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 1057. [2022-11-20 10:51:23,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 1056 states have (on average 1.7803030303030303) internal successors, (1880), 1056 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:23,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1880 transitions. [2022-11-20 10:51:23,187 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1880 transitions. Word has length 221 [2022-11-20 10:51:23,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:51:23,187 INFO L495 AbstractCegarLoop]: Abstraction has 1057 states and 1880 transitions. [2022-11-20 10:51:23,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:23,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1880 transitions. [2022-11-20 10:51:23,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-11-20 10:51:23,193 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:51:23,193 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:51:23,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 10:51:23,194 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:51:23,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:23,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1113466973, now seen corresponding path program 1 times [2022-11-20 10:51:23,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:23,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802313407] [2022-11-20 10:51:23,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:23,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:23,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:23,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:23,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:23,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802313407] [2022-11-20 10:51:23,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802313407] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:23,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:23,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:51:23,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947780478] [2022-11-20 10:51:23,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:23,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:51:23,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:23,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:51:23,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:51:23,467 INFO L87 Difference]: Start difference. First operand 1057 states and 1880 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:23,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:51:23,523 INFO L93 Difference]: Finished difference Result 2021 states and 3610 transitions. [2022-11-20 10:51:23,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:51:23,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 225 [2022-11-20 10:51:23,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:51:23,530 INFO L225 Difference]: With dead ends: 2021 [2022-11-20 10:51:23,531 INFO L226 Difference]: Without dead ends: 1515 [2022-11-20 10:51:23,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:51:23,533 INFO L413 NwaCegarLoop]: 1224 mSDtfsCounter, 213 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 2391 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:51:23,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 2391 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:51:23,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2022-11-20 10:51:23,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 1513. [2022-11-20 10:51:23,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1513 states, 1512 states have (on average 1.783068783068783) internal successors, (2696), 1512 states have internal predecessors, (2696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:23,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1513 states to 1513 states and 2696 transitions. [2022-11-20 10:51:23,587 INFO L78 Accepts]: Start accepts. Automaton has 1513 states and 2696 transitions. Word has length 225 [2022-11-20 10:51:23,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:51:23,588 INFO L495 AbstractCegarLoop]: Abstraction has 1513 states and 2696 transitions. [2022-11-20 10:51:23,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:23,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1513 states and 2696 transitions. [2022-11-20 10:51:23,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-11-20 10:51:23,600 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:51:23,600 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:51:23,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 10:51:23,601 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:51:23,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:23,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1539339209, now seen corresponding path program 1 times [2022-11-20 10:51:23,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:23,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768009371] [2022-11-20 10:51:23,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:23,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:23,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:23,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:23,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:23,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768009371] [2022-11-20 10:51:23,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768009371] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:23,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:23,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:51:23,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315450448] [2022-11-20 10:51:23,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:23,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:51:23,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:23,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:51:23,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:51:23,946 INFO L87 Difference]: Start difference. First operand 1513 states and 2696 transitions. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:24,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:51:24,025 INFO L93 Difference]: Finished difference Result 3341 states and 5970 transitions. [2022-11-20 10:51:24,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:51:24,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 229 [2022-11-20 10:51:24,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:51:24,036 INFO L225 Difference]: With dead ends: 3341 [2022-11-20 10:51:24,037 INFO L226 Difference]: Without dead ends: 2379 [2022-11-20 10:51:24,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:51:24,040 INFO L413 NwaCegarLoop]: 1224 mSDtfsCounter, 205 mSDsluCounter, 1168 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 2392 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:51:24,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 2392 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:51:24,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2379 states. [2022-11-20 10:51:24,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2379 to 2377. [2022-11-20 10:51:24,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2377 states, 2376 states have (on average 1.7828282828282829) internal successors, (4236), 2376 states have internal predecessors, (4236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:24,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2377 states to 2377 states and 4236 transitions. [2022-11-20 10:51:24,138 INFO L78 Accepts]: Start accepts. Automaton has 2377 states and 4236 transitions. Word has length 229 [2022-11-20 10:51:24,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:51:24,139 INFO L495 AbstractCegarLoop]: Abstraction has 2377 states and 4236 transitions. [2022-11-20 10:51:24,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:24,139 INFO L276 IsEmpty]: Start isEmpty. Operand 2377 states and 4236 transitions. [2022-11-20 10:51:24,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-11-20 10:51:24,145 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:51:24,146 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:51:24,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 10:51:24,146 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:51:24,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:24,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1794403537, now seen corresponding path program 1 times [2022-11-20 10:51:24,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:24,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973037017] [2022-11-20 10:51:24,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:24,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:24,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:24,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:24,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:24,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973037017] [2022-11-20 10:51:24,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973037017] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:24,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:24,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:51:24,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294791000] [2022-11-20 10:51:24,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:24,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:51:24,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:24,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:51:24,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:51:24,472 INFO L87 Difference]: Start difference. First operand 2377 states and 4236 transitions. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:24,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:51:24,578 INFO L93 Difference]: Finished difference Result 5837 states and 10414 transitions. [2022-11-20 10:51:24,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:51:24,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 233 [2022-11-20 10:51:24,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:51:24,596 INFO L225 Difference]: With dead ends: 5837 [2022-11-20 10:51:24,597 INFO L226 Difference]: Without dead ends: 4011 [2022-11-20 10:51:24,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:51:24,605 INFO L413 NwaCegarLoop]: 1224 mSDtfsCounter, 197 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 2393 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:51:24,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 2393 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:51:24,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4011 states. [2022-11-20 10:51:24,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4011 to 4009. [2022-11-20 10:51:24,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4009 states, 4008 states have (on average 1.7794411177644711) internal successors, (7132), 4008 states have internal predecessors, (7132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:24,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4009 states to 4009 states and 7132 transitions. [2022-11-20 10:51:24,770 INFO L78 Accepts]: Start accepts. Automaton has 4009 states and 7132 transitions. Word has length 233 [2022-11-20 10:51:24,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:51:24,771 INFO L495 AbstractCegarLoop]: Abstraction has 4009 states and 7132 transitions. [2022-11-20 10:51:24,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:24,772 INFO L276 IsEmpty]: Start isEmpty. Operand 4009 states and 7132 transitions. [2022-11-20 10:51:24,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-11-20 10:51:24,778 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:51:24,778 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:51:24,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 10:51:24,779 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:51:24,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:24,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1913435605, now seen corresponding path program 1 times [2022-11-20 10:51:24,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:24,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098473448] [2022-11-20 10:51:24,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:24,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:24,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:25,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:25,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:25,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098473448] [2022-11-20 10:51:25,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098473448] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:25,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:25,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 10:51:25,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926240981] [2022-11-20 10:51:25,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:25,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 10:51:25,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:25,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 10:51:25,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 10:51:25,252 INFO L87 Difference]: Start difference. First operand 4009 states and 7132 transitions. Second operand has 7 states, 7 states have (on average 33.857142857142854) internal successors, (237), 7 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:26,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:51:26,585 INFO L93 Difference]: Finished difference Result 23805 states and 42646 transitions. [2022-11-20 10:51:26,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 10:51:26,586 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 33.857142857142854) internal successors, (237), 7 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 237 [2022-11-20 10:51:26,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:51:26,687 INFO L225 Difference]: With dead ends: 23805 [2022-11-20 10:51:26,688 INFO L226 Difference]: Without dead ends: 20347 [2022-11-20 10:51:26,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-11-20 10:51:26,699 INFO L413 NwaCegarLoop]: 1221 mSDtfsCounter, 2628 mSDsluCounter, 10211 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2628 SdHoareTripleChecker+Valid, 11432 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:51:26,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2628 Valid, 11432 Invalid, 356 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 10:51:26,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20347 states. [2022-11-20 10:51:27,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20347 to 7328. [2022-11-20 10:51:27,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7328 states, 7327 states have (on average 1.7794458850825714) internal successors, (13038), 7327 states have internal predecessors, (13038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:27,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7328 states to 7328 states and 13038 transitions. [2022-11-20 10:51:27,298 INFO L78 Accepts]: Start accepts. Automaton has 7328 states and 13038 transitions. Word has length 237 [2022-11-20 10:51:27,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:51:27,299 INFO L495 AbstractCegarLoop]: Abstraction has 7328 states and 13038 transitions. [2022-11-20 10:51:27,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.857142857142854) internal successors, (237), 7 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:27,300 INFO L276 IsEmpty]: Start isEmpty. Operand 7328 states and 13038 transitions. [2022-11-20 10:51:27,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-11-20 10:51:27,310 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:51:27,310 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:51:27,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 10:51:27,311 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:51:27,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:27,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1453341025, now seen corresponding path program 1 times [2022-11-20 10:51:27,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:27,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151384681] [2022-11-20 10:51:27,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:27,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:27,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:27,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:27,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:27,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151384681] [2022-11-20 10:51:27,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151384681] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:27,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:27,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:51:27,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879055825] [2022-11-20 10:51:27,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:27,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:51:27,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:27,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:51:27,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:51:27,613 INFO L87 Difference]: Start difference. First operand 7328 states and 13038 transitions. Second operand has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:28,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:51:28,174 INFO L93 Difference]: Finished difference Result 21287 states and 38031 transitions. [2022-11-20 10:51:28,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:51:28,184 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 238 [2022-11-20 10:51:28,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:51:28,279 INFO L225 Difference]: With dead ends: 21287 [2022-11-20 10:51:28,279 INFO L226 Difference]: Without dead ends: 14510 [2022-11-20 10:51:28,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 10:51:28,291 INFO L413 NwaCegarLoop]: 1224 mSDtfsCounter, 736 mSDsluCounter, 2622 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 3846 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:51:28,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 3846 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:51:28,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14510 states. [2022-11-20 10:51:28,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14510 to 10886. [2022-11-20 10:51:28,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10886 states, 10885 states have (on average 1.780064308681672) internal successors, (19376), 10885 states have internal predecessors, (19376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:28,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10886 states to 10886 states and 19376 transitions. [2022-11-20 10:51:28,930 INFO L78 Accepts]: Start accepts. Automaton has 10886 states and 19376 transitions. Word has length 238 [2022-11-20 10:51:28,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:51:28,931 INFO L495 AbstractCegarLoop]: Abstraction has 10886 states and 19376 transitions. [2022-11-20 10:51:28,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:28,931 INFO L276 IsEmpty]: Start isEmpty. Operand 10886 states and 19376 transitions. [2022-11-20 10:51:28,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-11-20 10:51:28,940 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:51:28,940 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:51:28,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 10:51:28,941 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:51:28,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:28,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1866481297, now seen corresponding path program 1 times [2022-11-20 10:51:28,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:28,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266948643] [2022-11-20 10:51:28,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:28,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:28,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:29,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:29,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:29,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266948643] [2022-11-20 10:51:29,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266948643] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:29,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:29,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:51:29,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006594969] [2022-11-20 10:51:29,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:29,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:51:29,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:29,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:51:29,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:51:29,111 INFO L87 Difference]: Start difference. First operand 10886 states and 19376 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:29,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:51:29,756 INFO L93 Difference]: Finished difference Result 24013 states and 42846 transitions. [2022-11-20 10:51:29,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:51:29,756 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 239 [2022-11-20 10:51:29,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:51:29,793 INFO L225 Difference]: With dead ends: 24013 [2022-11-20 10:51:29,794 INFO L226 Difference]: Without dead ends: 16773 [2022-11-20 10:51:29,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:51:29,803 INFO L413 NwaCegarLoop]: 1427 mSDtfsCounter, 230 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 2615 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:51:29,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 2615 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:51:29,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16773 states. [2022-11-20 10:51:30,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16773 to 16771. [2022-11-20 10:51:30,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16771 states, 16770 states have (on average 1.7762075134168158) internal successors, (29787), 16770 states have internal predecessors, (29787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:30,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16771 states to 16771 states and 29787 transitions. [2022-11-20 10:51:30,631 INFO L78 Accepts]: Start accepts. Automaton has 16771 states and 29787 transitions. Word has length 239 [2022-11-20 10:51:30,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:51:30,632 INFO L495 AbstractCegarLoop]: Abstraction has 16771 states and 29787 transitions. [2022-11-20 10:51:30,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:30,632 INFO L276 IsEmpty]: Start isEmpty. Operand 16771 states and 29787 transitions. [2022-11-20 10:51:30,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-11-20 10:51:30,639 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:51:30,639 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:51:30,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 10:51:30,640 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:51:30,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:30,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1951768689, now seen corresponding path program 1 times [2022-11-20 10:51:30,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:30,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082430172] [2022-11-20 10:51:30,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:30,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:30,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:30,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:30,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:30,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082430172] [2022-11-20 10:51:30,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082430172] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:30,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:30,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:51:30,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014965447] [2022-11-20 10:51:30,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:30,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:51:30,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:30,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:51:30,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:51:30,895 INFO L87 Difference]: Start difference. First operand 16771 states and 29787 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:31,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:51:31,898 INFO L93 Difference]: Finished difference Result 32435 states and 57586 transitions. [2022-11-20 10:51:31,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:51:31,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 239 [2022-11-20 10:51:31,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:51:31,963 INFO L225 Difference]: With dead ends: 32435 [2022-11-20 10:51:31,963 INFO L226 Difference]: Without dead ends: 23729 [2022-11-20 10:51:31,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:51:31,976 INFO L413 NwaCegarLoop]: 1416 mSDtfsCounter, 222 mSDsluCounter, 1189 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 2605 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:51:31,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 2605 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:51:32,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23729 states. [2022-11-20 10:51:33,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23729 to 23727. [2022-11-20 10:51:33,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23727 states, 23726 states have (on average 1.7691561999494225) internal successors, (41975), 23726 states have internal predecessors, (41975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:33,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23727 states to 23727 states and 41975 transitions. [2022-11-20 10:51:33,196 INFO L78 Accepts]: Start accepts. Automaton has 23727 states and 41975 transitions. Word has length 239 [2022-11-20 10:51:33,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:51:33,198 INFO L495 AbstractCegarLoop]: Abstraction has 23727 states and 41975 transitions. [2022-11-20 10:51:33,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:33,198 INFO L276 IsEmpty]: Start isEmpty. Operand 23727 states and 41975 transitions. [2022-11-20 10:51:33,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-11-20 10:51:33,203 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:51:33,204 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:51:33,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 10:51:33,204 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:51:33,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:33,205 INFO L85 PathProgramCache]: Analyzing trace with hash 844816977, now seen corresponding path program 1 times [2022-11-20 10:51:33,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:33,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233522304] [2022-11-20 10:51:33,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:33,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:33,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:33,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:33,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:33,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233522304] [2022-11-20 10:51:33,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233522304] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:33,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:33,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:51:33,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080210353] [2022-11-20 10:51:33,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:33,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:51:33,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:33,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:51:33,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:51:33,394 INFO L87 Difference]: Start difference. First operand 23727 states and 41975 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:35,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:51:35,023 INFO L93 Difference]: Finished difference Result 45935 states and 81222 transitions. [2022-11-20 10:51:35,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:51:35,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 239 [2022-11-20 10:51:35,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:51:35,106 INFO L225 Difference]: With dead ends: 45935 [2022-11-20 10:51:35,106 INFO L226 Difference]: Without dead ends: 33517 [2022-11-20 10:51:35,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:51:35,122 INFO L413 NwaCegarLoop]: 1396 mSDtfsCounter, 214 mSDsluCounter, 1190 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 2586 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:51:35,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 2586 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:51:35,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33517 states. [2022-11-20 10:51:36,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33517 to 33515. [2022-11-20 10:51:36,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33515 states, 33514 states have (on average 1.761263949394283) internal successors, (59027), 33514 states have internal predecessors, (59027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:36,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33515 states to 33515 states and 59027 transitions. [2022-11-20 10:51:36,544 INFO L78 Accepts]: Start accepts. Automaton has 33515 states and 59027 transitions. Word has length 239 [2022-11-20 10:51:36,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:51:36,545 INFO L495 AbstractCegarLoop]: Abstraction has 33515 states and 59027 transitions. [2022-11-20 10:51:36,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:36,546 INFO L276 IsEmpty]: Start isEmpty. Operand 33515 states and 59027 transitions. [2022-11-20 10:51:36,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-11-20 10:51:36,551 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:51:36,552 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:51:36,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 10:51:36,552 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:51:36,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:36,553 INFO L85 PathProgramCache]: Analyzing trace with hash 120587313, now seen corresponding path program 1 times [2022-11-20 10:51:36,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:36,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510728587] [2022-11-20 10:51:36,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:36,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:36,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:36,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:36,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:36,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510728587] [2022-11-20 10:51:36,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510728587] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:36,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:36,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:51:36,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739350276] [2022-11-20 10:51:36,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:36,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:51:36,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:36,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:51:36,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:51:36,774 INFO L87 Difference]: Start difference. First operand 33515 states and 59027 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:39,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:51:39,074 INFO L93 Difference]: Finished difference Result 64899 states and 114226 transitions. [2022-11-20 10:51:39,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:51:39,075 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 239 [2022-11-20 10:51:39,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:51:39,177 INFO L225 Difference]: With dead ends: 64899 [2022-11-20 10:51:39,178 INFO L226 Difference]: Without dead ends: 47233 [2022-11-20 10:51:39,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:51:39,209 INFO L413 NwaCegarLoop]: 1376 mSDtfsCounter, 206 mSDsluCounter, 1191 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 2567 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:51:39,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 2567 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:51:39,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47233 states. [2022-11-20 10:51:41,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47233 to 47231. [2022-11-20 10:51:41,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47231 states, 47230 states have (on average 1.7523819606182511) internal successors, (82765), 47230 states have internal predecessors, (82765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:41,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47231 states to 47231 states and 82765 transitions. [2022-11-20 10:51:41,327 INFO L78 Accepts]: Start accepts. Automaton has 47231 states and 82765 transitions. Word has length 239 [2022-11-20 10:51:41,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:51:41,327 INFO L495 AbstractCegarLoop]: Abstraction has 47231 states and 82765 transitions. [2022-11-20 10:51:41,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:41,328 INFO L276 IsEmpty]: Start isEmpty. Operand 47231 states and 82765 transitions. [2022-11-20 10:51:41,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-11-20 10:51:41,332 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:51:41,332 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:51:41,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 10:51:41,332 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:51:41,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:41,333 INFO L85 PathProgramCache]: Analyzing trace with hash 817169937, now seen corresponding path program 1 times [2022-11-20 10:51:41,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:41,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231287987] [2022-11-20 10:51:41,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:41,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:41,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:41,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:41,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:41,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231287987] [2022-11-20 10:51:41,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231287987] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:41,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:41,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:51:41,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043884833] [2022-11-20 10:51:41,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:41,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:51:41,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:41,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:51:41,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:51:41,507 INFO L87 Difference]: Start difference. First operand 47231 states and 82765 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:43,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:51:43,752 INFO L93 Difference]: Finished difference Result 91419 states and 160062 transitions. [2022-11-20 10:51:43,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:51:43,752 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 239 [2022-11-20 10:51:43,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:51:43,873 INFO L225 Difference]: With dead ends: 91419 [2022-11-20 10:51:43,873 INFO L226 Difference]: Without dead ends: 66361 [2022-11-20 10:51:43,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:51:43,904 INFO L413 NwaCegarLoop]: 1356 mSDtfsCounter, 198 mSDsluCounter, 1192 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 2548 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:51:43,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 2548 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:51:43,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66361 states. [2022-11-20 10:51:46,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66361 to 66359. [2022-11-20 10:51:46,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66359 states, 66358 states have (on average 1.7423219506314236) internal successors, (115617), 66358 states have internal predecessors, (115617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:46,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66359 states to 66359 states and 115617 transitions. [2022-11-20 10:51:46,463 INFO L78 Accepts]: Start accepts. Automaton has 66359 states and 115617 transitions. Word has length 239 [2022-11-20 10:51:46,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:51:46,463 INFO L495 AbstractCegarLoop]: Abstraction has 66359 states and 115617 transitions. [2022-11-20 10:51:46,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:46,464 INFO L276 IsEmpty]: Start isEmpty. Operand 66359 states and 115617 transitions. [2022-11-20 10:51:46,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-11-20 10:51:46,466 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:51:46,467 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:51:46,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 10:51:46,467 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:51:46,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:46,468 INFO L85 PathProgramCache]: Analyzing trace with hash 93693410, now seen corresponding path program 1 times [2022-11-20 10:51:46,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:46,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260997177] [2022-11-20 10:51:46,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:46,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:46,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:46,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:46,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:46,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260997177] [2022-11-20 10:51:46,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260997177] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:46,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:46,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:51:46,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420944630] [2022-11-20 10:51:46,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:46,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:51:46,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:46,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:51:46,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:51:46,687 INFO L87 Difference]: Start difference. First operand 66359 states and 115617 transitions. Second operand has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:52,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:51:52,210 INFO L93 Difference]: Finished difference Result 219525 states and 382555 transitions. [2022-11-20 10:51:52,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:51:52,211 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 239 [2022-11-20 10:51:52,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:51:52,610 INFO L225 Difference]: With dead ends: 219525 [2022-11-20 10:51:52,610 INFO L226 Difference]: Without dead ends: 153767 [2022-11-20 10:51:52,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 10:51:52,703 INFO L413 NwaCegarLoop]: 1219 mSDtfsCounter, 734 mSDsluCounter, 2624 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 3843 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:51:52,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 3843 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:51:52,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153767 states. [2022-11-20 10:51:57,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153767 to 109794. [2022-11-20 10:51:57,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109794 states, 109793 states have (on average 1.734791835545071) internal successors, (190468), 109793 states have internal predecessors, (190468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:57,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109794 states to 109794 states and 190468 transitions. [2022-11-20 10:51:57,831 INFO L78 Accepts]: Start accepts. Automaton has 109794 states and 190468 transitions. Word has length 239 [2022-11-20 10:51:57,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:51:57,831 INFO L495 AbstractCegarLoop]: Abstraction has 109794 states and 190468 transitions. [2022-11-20 10:51:57,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:57,832 INFO L276 IsEmpty]: Start isEmpty. Operand 109794 states and 190468 transitions. [2022-11-20 10:51:57,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-11-20 10:51:57,835 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:51:57,835 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:51:57,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 10:51:57,835 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:51:57,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:57,836 INFO L85 PathProgramCache]: Analyzing trace with hash 976124982, now seen corresponding path program 1 times [2022-11-20 10:51:57,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:57,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404154604] [2022-11-20 10:51:57,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:57,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:57,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:58,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:58,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:58,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404154604] [2022-11-20 10:51:58,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404154604] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:58,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:58,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:51:58,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606021849] [2022-11-20 10:51:58,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:58,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:51:58,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:58,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:51:58,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:51:58,106 INFO L87 Difference]: Start difference. First operand 109794 states and 190468 transitions. Second operand has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)