./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label05.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc801cf3-18e5-445d-9011-3a27da9597c6/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc801cf3-18e5-445d-9011-3a27da9597c6/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc801cf3-18e5-445d-9011-3a27da9597c6/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc801cf3-18e5-445d-9011-3a27da9597c6/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label05.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc801cf3-18e5-445d-9011-3a27da9597c6/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc801cf3-18e5-445d-9011-3a27da9597c6/bin/uautomizer-TMbwUNV5ro --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 616bab40818b87d728a052729e2d9dd8669a50a14a8b23186662b937cbcc108d --- 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-8393723 [2022-11-18 18:38:25,001 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:38:25,004 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:38:25,022 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:38:25,023 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:38:25,024 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:38:25,025 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:38:25,027 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:38:25,029 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:38:25,030 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:38:25,031 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:38:25,033 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:38:25,033 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:38:25,034 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:38:25,036 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:38:25,037 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:38:25,039 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:38:25,040 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:38:25,042 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:38:25,044 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:38:25,046 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:38:25,048 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:38:25,050 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:38:25,051 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:38:25,055 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:38:25,055 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:38:25,056 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:38:25,057 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:38:25,058 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:38:25,059 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:38:25,059 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:38:25,060 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:38:25,061 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:38:25,063 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:38:25,064 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:38:25,064 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:38:25,066 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:38:25,066 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:38:25,067 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:38:25,068 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:38:25,069 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:38:25,070 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc801cf3-18e5-445d-9011-3a27da9597c6/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 18:38:25,098 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:38:25,099 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:38:25,099 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:38:25,099 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:38:25,100 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:38:25,100 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:38:25,101 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:38:25,102 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:38:25,102 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:38:25,102 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:38:25,109 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:38:25,110 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:38:25,110 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:38:25,110 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:38:25,111 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:38:25,111 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:38:25,111 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:38:25,112 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:38:25,112 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:38:25,112 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:38:25,112 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:38:25,113 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:38:25,113 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:38:25,114 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:38:25,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:38:25,114 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:38:25,114 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:38:25,115 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:38:25,115 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:38:25,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:38:25,117 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:38:25,117 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:38:25,118 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:38:25,118 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_bc801cf3-18e5-445d-9011-3a27da9597c6/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc801cf3-18e5-445d-9011-3a27da9597c6/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 616bab40818b87d728a052729e2d9dd8669a50a14a8b23186662b937cbcc108d [2022-11-18 18:38:25,443 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:38:25,466 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:38:25,469 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:38:25,470 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:38:25,472 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:38:25,473 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc801cf3-18e5-445d-9011-3a27da9597c6/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label05.c [2022-11-18 18:38:25,568 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc801cf3-18e5-445d-9011-3a27da9597c6/bin/uautomizer-TMbwUNV5ro/data/900ce36ca/4118fbce976a42a991c89d9293db6f44/FLAGd85fd0727 [2022-11-18 18:38:26,314 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:38:26,315 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc801cf3-18e5-445d-9011-3a27da9597c6/sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label05.c [2022-11-18 18:38:26,376 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc801cf3-18e5-445d-9011-3a27da9597c6/bin/uautomizer-TMbwUNV5ro/data/900ce36ca/4118fbce976a42a991c89d9293db6f44/FLAGd85fd0727 [2022-11-18 18:38:26,896 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc801cf3-18e5-445d-9011-3a27da9597c6/bin/uautomizer-TMbwUNV5ro/data/900ce36ca/4118fbce976a42a991c89d9293db6f44 [2022-11-18 18:38:26,898 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:38:26,902 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:38:26,903 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:38:26,903 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:38:26,907 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:38:26,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:38:26" (1/1) ... [2022-11-18 18:38:26,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5309e89f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:26, skipping insertion in model container [2022-11-18 18:38:26,909 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:38:26" (1/1) ... [2022-11-18 18:38:26,916 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:38:27,070 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:38:27,567 WARN L234 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_bc801cf3-18e5-445d-9011-3a27da9597c6/sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label05.c[20463,20476] [2022-11-18 18:38:27,622 WARN L234 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_bc801cf3-18e5-445d-9011-3a27da9597c6/sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label05.c[27399,27412] [2022-11-18 18:38:28,590 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:38:28,603 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:38:28,676 WARN L234 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_bc801cf3-18e5-445d-9011-3a27da9597c6/sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label05.c[20463,20476] [2022-11-18 18:38:28,697 WARN L234 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_bc801cf3-18e5-445d-9011-3a27da9597c6/sv-benchmarks/c/combinations/pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label05.c[27399,27412] [2022-11-18 18:38:29,309 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:38:29,340 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:38:29,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:29 WrapperNode [2022-11-18 18:38:29,341 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:38:29,343 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:38:29,343 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:38:29,343 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:38:29,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:29" (1/1) ... [2022-11-18 18:38:29,414 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:29" (1/1) ... [2022-11-18 18:38:29,781 INFO L138 Inliner]: procedures = 38, calls = 24, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 5183 [2022-11-18 18:38:29,782 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:38:29,783 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:38:29,783 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:38:29,783 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:38:29,794 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:29" (1/1) ... [2022-11-18 18:38:29,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:29" (1/1) ... [2022-11-18 18:38:29,941 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:29" (1/1) ... [2022-11-18 18:38:29,941 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:29" (1/1) ... [2022-11-18 18:38:30,075 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:29" (1/1) ... [2022-11-18 18:38:30,097 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:29" (1/1) ... [2022-11-18 18:38:30,116 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:29" (1/1) ... [2022-11-18 18:38:30,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:29" (1/1) ... [2022-11-18 18:38:30,245 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:38:30,255 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:38:30,256 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:38:30,256 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:38:30,262 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:29" (1/1) ... [2022-11-18 18:38:30,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:38:30,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc801cf3-18e5-445d-9011-3a27da9597c6/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:38:30,302 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc801cf3-18e5-445d-9011-3a27da9597c6/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:38:30,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc801cf3-18e5-445d-9011-3a27da9597c6/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:38:30,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:38:30,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:38:30,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:38:30,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:38:30,600 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:38:30,602 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:38:36,260 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:38:36,283 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:38:36,283 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-18 18:38:36,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:38:36 BoogieIcfgContainer [2022-11-18 18:38:36,287 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:38:36,290 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:38:36,290 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:38:36,294 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:38:36,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:38:26" (1/3) ... [2022-11-18 18:38:36,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a994bfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:38:36, skipping insertion in model container [2022-11-18 18:38:36,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:38:29" (2/3) ... [2022-11-18 18:38:36,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a994bfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:38:36, skipping insertion in model container [2022-11-18 18:38:36,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:38:36" (3/3) ... [2022-11-18 18:38:36,298 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.BOUNDED-14.pals+Problem12_label05.c [2022-11-18 18:38:36,317 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:38:36,317 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-18 18:38:36,423 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:38:36,430 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;@2489b69c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:38:36,430 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-18 18:38:36,439 INFO L276 IsEmpty]: Start isEmpty. Operand has 930 states, 927 states have (on average 1.9039913700107876) internal successors, (1765), 929 states have internal predecessors, (1765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:36,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-18 18:38:36,449 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:36,450 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:36,450 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:38:36,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:36,456 INFO L85 PathProgramCache]: Analyzing trace with hash 495960789, now seen corresponding path program 1 times [2022-11-18 18:38:36,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:36,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604667594] [2022-11-18 18:38:36,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:36,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:36,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:36,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:36,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:36,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604667594] [2022-11-18 18:38:36,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604667594] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:36,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:36,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:38:36,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981851435] [2022-11-18 18:38:36,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:36,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 18:38:36,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:36,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 18:38:36,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 18:38:36,757 INFO L87 Difference]: Start difference. First operand has 930 states, 927 states have (on average 1.9039913700107876) internal successors, (1765), 929 states have internal predecessors, (1765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:36,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:36,859 INFO L93 Difference]: Finished difference Result 1804 states and 3422 transitions. [2022-11-18 18:38:36,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 18:38:36,868 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-18 18:38:36,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:36,894 INFO L225 Difference]: With dead ends: 1804 [2022-11-18 18:38:36,904 INFO L226 Difference]: Without dead ends: 864 [2022-11-18 18:38:36,911 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 [2022-11-18 18:38:36,919 INFO L413 NwaCegarLoop]: 1699 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1699 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:36,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1699 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:38:36,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2022-11-18 18:38:37,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 864. [2022-11-18 18:38:37,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 862 states have (on average 1.8932714617169373) internal successors, (1632), 863 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:37,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1632 transitions. [2022-11-18 18:38:37,037 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1632 transitions. Word has length 28 [2022-11-18 18:38:37,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:37,038 INFO L495 AbstractCegarLoop]: Abstraction has 864 states and 1632 transitions. [2022-11-18 18:38:37,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:37,038 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1632 transitions. [2022-11-18 18:38:37,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-18 18:38:37,040 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:37,041 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:37,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:38:37,042 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:38:37,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:37,042 INFO L85 PathProgramCache]: Analyzing trace with hash 714815507, now seen corresponding path program 1 times [2022-11-18 18:38:37,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:37,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568871679] [2022-11-18 18:38:37,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:37,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:37,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:37,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:37,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:37,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568871679] [2022-11-18 18:38:37,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568871679] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:37,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:37,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:38:37,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383324521] [2022-11-18 18:38:37,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:37,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:38:37,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:37,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:38:37,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:38:37,393 INFO L87 Difference]: Start difference. First operand 864 states and 1632 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:37,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:37,667 INFO L93 Difference]: Finished difference Result 922 states and 1723 transitions. [2022-11-18 18:38:37,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:38:37,668 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-18 18:38:37,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:37,674 INFO L225 Difference]: With dead ends: 922 [2022-11-18 18:38:37,675 INFO L226 Difference]: Without dead ends: 864 [2022-11-18 18:38:37,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:38:37,680 INFO L413 NwaCegarLoop]: 1630 mSDtfsCounter, 3 mSDsluCounter, 4837 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6467 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:37,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6467 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 18:38:37,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2022-11-18 18:38:37,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 864. [2022-11-18 18:38:37,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 862 states have (on average 1.8352668213457077) internal successors, (1582), 863 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:37,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1582 transitions. [2022-11-18 18:38:37,717 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1582 transitions. Word has length 28 [2022-11-18 18:38:37,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:37,717 INFO L495 AbstractCegarLoop]: Abstraction has 864 states and 1582 transitions. [2022-11-18 18:38:37,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:37,718 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1582 transitions. [2022-11-18 18:38:37,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-18 18:38:37,720 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:37,720 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] [2022-11-18 18:38:37,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:38:37,721 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:38:37,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:37,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1438669637, now seen corresponding path program 1 times [2022-11-18 18:38:37,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:37,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057010459] [2022-11-18 18:38:37,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:37,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:37,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:38,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:38,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:38,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057010459] [2022-11-18 18:38:38,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057010459] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:38,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:38,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:38:38,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78960289] [2022-11-18 18:38:38,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:38,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:38:38,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:38,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:38:38,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:38:38,091 INFO L87 Difference]: Start difference. First operand 864 states and 1582 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2022-11-18 18:38:47,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:47,411 INFO L93 Difference]: Finished difference Result 3119 states and 5891 transitions. [2022-11-18 18:38:47,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:38:47,412 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 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 60 [2022-11-18 18:38:47,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:47,427 INFO L225 Difference]: With dead ends: 3119 [2022-11-18 18:38:47,431 INFO L226 Difference]: Without dead ends: 2366 [2022-11-18 18:38:47,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:38:47,439 INFO L413 NwaCegarLoop]: 836 mSDtfsCounter, 2467 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5518 mSolverCounterSat, 1100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2467 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 6618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1100 IncrementalHoareTripleChecker+Valid, 5518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:47,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2467 Valid, 854 Invalid, 6618 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1100 Valid, 5518 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2022-11-18 18:38:47,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2366 states. [2022-11-18 18:38:47,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2366 to 2366. [2022-11-18 18:38:47,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2366 states, 2364 states have (on average 1.5685279187817258) internal successors, (3708), 2365 states have internal predecessors, (3708), 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) [2022-11-18 18:38:47,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2366 states to 2366 states and 3708 transitions. [2022-11-18 18:38:47,515 INFO L78 Accepts]: Start accepts. Automaton has 2366 states and 3708 transitions. Word has length 60 [2022-11-18 18:38:47,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:47,516 INFO L495 AbstractCegarLoop]: Abstraction has 2366 states and 3708 transitions. [2022-11-18 18:38:47,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2022-11-18 18:38:47,516 INFO L276 IsEmpty]: Start isEmpty. Operand 2366 states and 3708 transitions. [2022-11-18 18:38:47,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-18 18:38:47,518 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:47,518 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:47,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 18:38:47,519 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:38:47,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:47,520 INFO L85 PathProgramCache]: Analyzing trace with hash -585081934, now seen corresponding path program 1 times [2022-11-18 18:38:47,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:47,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27784013] [2022-11-18 18:38:47,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:47,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:47,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:47,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:47,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:47,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27784013] [2022-11-18 18:38:47,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27784013] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:47,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:47,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 18:38:47,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373655197] [2022-11-18 18:38:47,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:47,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 18:38:47,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:47,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 18:38:47,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:38:47,858 INFO L87 Difference]: Start difference. First operand 2366 states and 3708 transitions. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:48,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:48,467 INFO L93 Difference]: Finished difference Result 3122 states and 4926 transitions. [2022-11-18 18:38:48,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 18:38:48,468 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-18 18:38:48,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:48,481 INFO L225 Difference]: With dead ends: 3122 [2022-11-18 18:38:48,482 INFO L226 Difference]: Without dead ends: 3068 [2022-11-18 18:38:48,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-11-18 18:38:48,495 INFO L413 NwaCegarLoop]: 1578 mSDtfsCounter, 11503 mSDsluCounter, 3556 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11503 SdHoareTripleChecker+Valid, 5134 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:48,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11503 Valid, 5134 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 18:38:48,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3068 states. [2022-11-18 18:38:48,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3068 to 2418. [2022-11-18 18:38:48,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2418 states, 2416 states have (on average 1.5695364238410596) internal successors, (3792), 2417 states have internal predecessors, (3792), 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) [2022-11-18 18:38:48,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2418 states to 2418 states and 3792 transitions. [2022-11-18 18:38:48,601 INFO L78 Accepts]: Start accepts. Automaton has 2418 states and 3792 transitions. Word has length 77 [2022-11-18 18:38:48,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:48,603 INFO L495 AbstractCegarLoop]: Abstraction has 2418 states and 3792 transitions. [2022-11-18 18:38:48,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:48,603 INFO L276 IsEmpty]: Start isEmpty. Operand 2418 states and 3792 transitions. [2022-11-18 18:38:48,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-18 18:38:48,605 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:48,606 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:48,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 18:38:48,607 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:38:48,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:48,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1038714270, now seen corresponding path program 1 times [2022-11-18 18:38:48,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:48,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474140141] [2022-11-18 18:38:48,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:48,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:48,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:48,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:48,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:48,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474140141] [2022-11-18 18:38:48,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474140141] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:48,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:48,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:38:48,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815029824] [2022-11-18 18:38:48,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:48,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:38:48,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:48,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:38:48,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:38:48,769 INFO L87 Difference]: Start difference. First operand 2418 states and 3792 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:48,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:48,852 INFO L93 Difference]: Finished difference Result 2619 states and 4115 transitions. [2022-11-18 18:38:48,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:38:48,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-11-18 18:38:48,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:48,864 INFO L225 Difference]: With dead ends: 2619 [2022-11-18 18:38:48,865 INFO L226 Difference]: Without dead ends: 2513 [2022-11-18 18:38:48,866 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 [2022-11-18 18:38:48,867 INFO L413 NwaCegarLoop]: 1580 mSDtfsCounter, 1498 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 1662 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:48,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 1662 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:38:48,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2513 states. [2022-11-18 18:38:48,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2513 to 2511. [2022-11-18 18:38:48,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2511 states, 2509 states have (on average 1.570346751693902) internal successors, (3940), 2510 states have internal predecessors, (3940), 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) [2022-11-18 18:38:48,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2511 states to 2511 states and 3940 transitions. [2022-11-18 18:38:48,980 INFO L78 Accepts]: Start accepts. Automaton has 2511 states and 3940 transitions. Word has length 79 [2022-11-18 18:38:48,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:48,983 INFO L495 AbstractCegarLoop]: Abstraction has 2511 states and 3940 transitions. [2022-11-18 18:38:48,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:48,984 INFO L276 IsEmpty]: Start isEmpty. Operand 2511 states and 3940 transitions. [2022-11-18 18:38:48,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-18 18:38:48,985 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:48,987 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:48,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 18:38:48,988 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:38:48,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:48,992 INFO L85 PathProgramCache]: Analyzing trace with hash -972220758, now seen corresponding path program 1 times [2022-11-18 18:38:48,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:48,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527863103] [2022-11-18 18:38:48,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:48,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:49,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:49,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:49,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:49,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527863103] [2022-11-18 18:38:49,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527863103] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:49,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:49,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 18:38:49,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559424306] [2022-11-18 18:38:49,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:49,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 18:38:49,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:49,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 18:38:49,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:38:49,477 INFO L87 Difference]: Start difference. First operand 2511 states and 3940 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:49,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:49,891 INFO L93 Difference]: Finished difference Result 2712 states and 4260 transitions. [2022-11-18 18:38:49,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:38:49,892 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-11-18 18:38:49,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:49,901 INFO L225 Difference]: With dead ends: 2712 [2022-11-18 18:38:49,902 INFO L226 Difference]: Without dead ends: 2513 [2022-11-18 18:38:49,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2022-11-18 18:38:49,904 INFO L413 NwaCegarLoop]: 1573 mSDtfsCounter, 7825 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7825 SdHoareTripleChecker+Valid, 2080 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:49,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7825 Valid, 2080 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:38:49,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2513 states. [2022-11-18 18:38:49,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2513 to 2511. [2022-11-18 18:38:49,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2511 states, 2509 states have (on average 1.5695496213630928) internal successors, (3938), 2510 states have internal predecessors, (3938), 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) [2022-11-18 18:38:50,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2511 states to 2511 states and 3938 transitions. [2022-11-18 18:38:50,003 INFO L78 Accepts]: Start accepts. Automaton has 2511 states and 3938 transitions. Word has length 79 [2022-11-18 18:38:50,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:50,004 INFO L495 AbstractCegarLoop]: Abstraction has 2511 states and 3938 transitions. [2022-11-18 18:38:50,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:50,005 INFO L276 IsEmpty]: Start isEmpty. Operand 2511 states and 3938 transitions. [2022-11-18 18:38:50,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-18 18:38:50,006 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:50,006 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:50,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 18:38:50,006 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:38:50,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:50,007 INFO L85 PathProgramCache]: Analyzing trace with hash -488795339, now seen corresponding path program 1 times [2022-11-18 18:38:50,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:50,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248014770] [2022-11-18 18:38:50,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:50,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:50,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:50,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:50,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:50,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248014770] [2022-11-18 18:38:50,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248014770] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:50,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:50,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 18:38:50,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169713052] [2022-11-18 18:38:50,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:50,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:38:50,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:50,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:38:50,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:38:50,435 INFO L87 Difference]: Start difference. First operand 2511 states and 3938 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:50,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:50,675 INFO L93 Difference]: Finished difference Result 2707 states and 4245 transitions. [2022-11-18 18:38:50,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:38:50,676 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-11-18 18:38:50,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:50,685 INFO L225 Difference]: With dead ends: 2707 [2022-11-18 18:38:50,685 INFO L226 Difference]: Without dead ends: 2705 [2022-11-18 18:38:50,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-18 18:38:50,688 INFO L413 NwaCegarLoop]: 1657 mSDtfsCounter, 514 mSDsluCounter, 9209 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 10866 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:50,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [514 Valid, 10866 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:38:50,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2705 states. [2022-11-18 18:38:50,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2705 to 2517. [2022-11-18 18:38:50,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2517 states, 2515 states have (on average 1.5677932405566601) internal successors, (3943), 2516 states have internal predecessors, (3943), 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) [2022-11-18 18:38:50,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2517 states to 2517 states and 3943 transitions. [2022-11-18 18:38:50,852 INFO L78 Accepts]: Start accepts. Automaton has 2517 states and 3943 transitions. Word has length 80 [2022-11-18 18:38:50,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:50,852 INFO L495 AbstractCegarLoop]: Abstraction has 2517 states and 3943 transitions. [2022-11-18 18:38:50,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:50,853 INFO L276 IsEmpty]: Start isEmpty. Operand 2517 states and 3943 transitions. [2022-11-18 18:38:50,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-18 18:38:50,859 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:50,859 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:50,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 18:38:50,860 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:38:50,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:50,861 INFO L85 PathProgramCache]: Analyzing trace with hash 295676394, now seen corresponding path program 1 times [2022-11-18 18:38:50,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:50,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746943814] [2022-11-18 18:38:50,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:50,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:50,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:50,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:50,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:50,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746943814] [2022-11-18 18:38:50,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746943814] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:50,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:50,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:38:50,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718974359] [2022-11-18 18:38:50,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:50,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:38:50,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:50,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:38:50,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:38:50,935 INFO L87 Difference]: Start difference. First operand 2517 states and 3943 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:51,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:51,028 INFO L93 Difference]: Finished difference Result 2735 states and 4284 transitions. [2022-11-18 18:38:51,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:38:51,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-11-18 18:38:51,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:51,037 INFO L225 Difference]: With dead ends: 2735 [2022-11-18 18:38:51,038 INFO L226 Difference]: Without dead ends: 2623 [2022-11-18 18:38:51,039 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 [2022-11-18 18:38:51,040 INFO L413 NwaCegarLoop]: 1654 mSDtfsCounter, 1516 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 1742 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:51,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1516 Valid, 1742 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:38:51,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2623 states. [2022-11-18 18:38:51,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2623 to 2621. [2022-11-18 18:38:51,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2621 states, 2619 states have (on average 1.5670103092783505) internal successors, (4104), 2620 states have internal predecessors, (4104), 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) [2022-11-18 18:38:51,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2621 states to 2621 states and 4104 transitions. [2022-11-18 18:38:51,163 INFO L78 Accepts]: Start accepts. Automaton has 2621 states and 4104 transitions. Word has length 81 [2022-11-18 18:38:51,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:51,163 INFO L495 AbstractCegarLoop]: Abstraction has 2621 states and 4104 transitions. [2022-11-18 18:38:51,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:51,164 INFO L276 IsEmpty]: Start isEmpty. Operand 2621 states and 4104 transitions. [2022-11-18 18:38:51,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-18 18:38:51,166 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:51,167 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:51,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 18:38:51,168 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:38:51,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:51,168 INFO L85 PathProgramCache]: Analyzing trace with hash -2057221398, now seen corresponding path program 1 times [2022-11-18 18:38:51,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:51,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419781473] [2022-11-18 18:38:51,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:51,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:51,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:51,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:51,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:51,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419781473] [2022-11-18 18:38:51,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419781473] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:51,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:51,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:38:51,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205820658] [2022-11-18 18:38:51,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:51,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:38:51,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:51,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:38:51,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:38:51,247 INFO L87 Difference]: Start difference. First operand 2621 states and 4104 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:51,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:51,396 INFO L93 Difference]: Finished difference Result 3211 states and 5024 transitions. [2022-11-18 18:38:51,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:38:51,397 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-11-18 18:38:51,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:51,407 INFO L225 Difference]: With dead ends: 3211 [2022-11-18 18:38:51,407 INFO L226 Difference]: Without dead ends: 2904 [2022-11-18 18:38:51,409 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 [2022-11-18 18:38:51,412 INFO L413 NwaCegarLoop]: 1656 mSDtfsCounter, 1514 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 1748 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:51,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1514 Valid, 1748 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:38:51,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2904 states. [2022-11-18 18:38:51,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2904 to 2902. [2022-11-18 18:38:51,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2902 states, 2900 states have (on average 1.5641379310344827) internal successors, (4536), 2901 states have internal predecessors, (4536), 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) [2022-11-18 18:38:51,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2902 states to 2902 states and 4536 transitions. [2022-11-18 18:38:51,573 INFO L78 Accepts]: Start accepts. Automaton has 2902 states and 4536 transitions. Word has length 81 [2022-11-18 18:38:51,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:51,574 INFO L495 AbstractCegarLoop]: Abstraction has 2902 states and 4536 transitions. [2022-11-18 18:38:51,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:51,574 INFO L276 IsEmpty]: Start isEmpty. Operand 2902 states and 4536 transitions. [2022-11-18 18:38:51,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-18 18:38:51,575 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:51,575 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:51,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 18:38:51,576 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:38:51,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:51,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1894306838, now seen corresponding path program 1 times [2022-11-18 18:38:51,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:51,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484708250] [2022-11-18 18:38:51,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:51,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:51,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:51,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:51,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:51,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484708250] [2022-11-18 18:38:51,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484708250] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:51,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:51,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:38:51,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121685612] [2022-11-18 18:38:51,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:51,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:38:51,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:51,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:38:51,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:38:51,661 INFO L87 Difference]: Start difference. First operand 2902 states and 4536 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:51,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:51,922 INFO L93 Difference]: Finished difference Result 4030 states and 6278 transitions. [2022-11-18 18:38:51,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:38:51,923 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-11-18 18:38:51,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:51,950 INFO L225 Difference]: With dead ends: 4030 [2022-11-18 18:38:51,957 INFO L226 Difference]: Without dead ends: 3442 [2022-11-18 18:38:51,960 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 [2022-11-18 18:38:51,960 INFO L413 NwaCegarLoop]: 1654 mSDtfsCounter, 1512 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 1750 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:51,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1512 Valid, 1750 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:38:51,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3442 states. [2022-11-18 18:38:52,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3442 to 3440. [2022-11-18 18:38:52,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3440 states, 3438 states have (on average 1.556719022687609) internal successors, (5352), 3439 states have internal predecessors, (5352), 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) [2022-11-18 18:38:52,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3440 states to 3440 states and 5352 transitions. [2022-11-18 18:38:52,324 INFO L78 Accepts]: Start accepts. Automaton has 3440 states and 5352 transitions. Word has length 81 [2022-11-18 18:38:52,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:52,325 INFO L495 AbstractCegarLoop]: Abstraction has 3440 states and 5352 transitions. [2022-11-18 18:38:52,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:52,326 INFO L276 IsEmpty]: Start isEmpty. Operand 3440 states and 5352 transitions. [2022-11-18 18:38:52,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-18 18:38:52,327 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:52,327 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:52,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 18:38:52,327 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:38:52,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:52,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1630450454, now seen corresponding path program 1 times [2022-11-18 18:38:52,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:52,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830989993] [2022-11-18 18:38:52,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:52,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:52,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:52,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:52,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:52,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830989993] [2022-11-18 18:38:52,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830989993] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:52,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:52,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:38:52,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753100609] [2022-11-18 18:38:52,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:52,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:38:52,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:52,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:38:52,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:38:52,407 INFO L87 Difference]: Start difference. First operand 3440 states and 5352 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:52,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:52,955 INFO L93 Difference]: Finished difference Result 5596 states and 8642 transitions. [2022-11-18 18:38:52,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:38:52,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-11-18 18:38:52,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:52,976 INFO L225 Difference]: With dead ends: 5596 [2022-11-18 18:38:52,976 INFO L226 Difference]: Without dead ends: 4470 [2022-11-18 18:38:52,980 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 [2022-11-18 18:38:52,981 INFO L413 NwaCegarLoop]: 1652 mSDtfsCounter, 1510 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 1752 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:52,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 1752 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:38:52,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4470 states. [2022-11-18 18:38:53,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4470 to 4468. [2022-11-18 18:38:53,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4468 states, 4466 states have (on average 1.542319749216301) internal successors, (6888), 4467 states have internal predecessors, (6888), 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) [2022-11-18 18:38:53,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4468 states to 4468 states and 6888 transitions. [2022-11-18 18:38:53,505 INFO L78 Accepts]: Start accepts. Automaton has 4468 states and 6888 transitions. Word has length 81 [2022-11-18 18:38:53,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:53,507 INFO L495 AbstractCegarLoop]: Abstraction has 4468 states and 6888 transitions. [2022-11-18 18:38:53,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:53,507 INFO L276 IsEmpty]: Start isEmpty. Operand 4468 states and 6888 transitions. [2022-11-18 18:38:53,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-18 18:38:53,508 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:53,509 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:53,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 18:38:53,509 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:38:53,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:53,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1687310058, now seen corresponding path program 1 times [2022-11-18 18:38:53,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:53,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022903937] [2022-11-18 18:38:53,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:53,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:53,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:53,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:53,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:53,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022903937] [2022-11-18 18:38:53,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022903937] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:53,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:53,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:38:53,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669274323] [2022-11-18 18:38:53,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:53,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:38:53,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:53,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:38:53,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:38:53,589 INFO L87 Difference]: Start difference. First operand 4468 states and 6888 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:54,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:54,509 INFO L93 Difference]: Finished difference Result 8584 states and 13082 transitions. [2022-11-18 18:38:54,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:38:54,510 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-11-18 18:38:54,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:54,523 INFO L225 Difference]: With dead ends: 8584 [2022-11-18 18:38:54,524 INFO L226 Difference]: Without dead ends: 6430 [2022-11-18 18:38:54,528 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 [2022-11-18 18:38:54,529 INFO L413 NwaCegarLoop]: 1640 mSDtfsCounter, 1506 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1506 SdHoareTripleChecker+Valid, 1748 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:54,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1506 Valid, 1748 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:38:54,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6430 states. [2022-11-18 18:38:55,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6430 to 6428. [2022-11-18 18:38:55,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6428 states, 6426 states have (on average 1.5200746965452847) internal successors, (9768), 6427 states have internal predecessors, (9768), 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) [2022-11-18 18:38:55,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6428 states to 6428 states and 9768 transitions. [2022-11-18 18:38:55,670 INFO L78 Accepts]: Start accepts. Automaton has 6428 states and 9768 transitions. Word has length 81 [2022-11-18 18:38:55,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:55,671 INFO L495 AbstractCegarLoop]: Abstraction has 6428 states and 9768 transitions. [2022-11-18 18:38:55,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:55,671 INFO L276 IsEmpty]: Start isEmpty. Operand 6428 states and 9768 transitions. [2022-11-18 18:38:55,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-18 18:38:55,672 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:55,672 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:55,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 18:38:55,673 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:38:55,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:55,674 INFO L85 PathProgramCache]: Analyzing trace with hash -826724374, now seen corresponding path program 1 times [2022-11-18 18:38:55,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:55,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811266340] [2022-11-18 18:38:55,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:55,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:55,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:55,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:55,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:55,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811266340] [2022-11-18 18:38:55,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811266340] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:55,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:55,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:38:55,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032180834] [2022-11-18 18:38:55,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:55,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:38:55,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:55,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:38:55,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:38:55,743 INFO L87 Difference]: Start difference. First operand 6428 states and 9768 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:57,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:57,456 INFO L93 Difference]: Finished difference Result 14272 states and 21386 transitions. [2022-11-18 18:38:57,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:38:57,457 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-11-18 18:38:57,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:57,479 INFO L225 Difference]: With dead ends: 14272 [2022-11-18 18:38:57,479 INFO L226 Difference]: Without dead ends: 10158 [2022-11-18 18:38:57,487 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 [2022-11-18 18:38:57,488 INFO L413 NwaCegarLoop]: 1638 mSDtfsCounter, 1504 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1750 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:57,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 1750 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:38:57,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10158 states. [2022-11-18 18:38:59,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10158 to 10156. [2022-11-18 18:38:59,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10156 states, 10154 states have (on average 1.4914319480007878) internal successors, (15144), 10155 states have internal predecessors, (15144), 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) [2022-11-18 18:38:59,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10156 states to 10156 states and 15144 transitions. [2022-11-18 18:38:59,315 INFO L78 Accepts]: Start accepts. Automaton has 10156 states and 15144 transitions. Word has length 81 [2022-11-18 18:38:59,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:59,316 INFO L495 AbstractCegarLoop]: Abstraction has 10156 states and 15144 transitions. [2022-11-18 18:38:59,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:38:59,316 INFO L276 IsEmpty]: Start isEmpty. Operand 10156 states and 15144 transitions. [2022-11-18 18:38:59,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-18 18:38:59,317 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:59,317 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:59,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 18:38:59,318 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:38:59,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:59,318 INFO L85 PathProgramCache]: Analyzing trace with hash -392188438, now seen corresponding path program 1 times [2022-11-18 18:38:59,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:38:59,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63472261] [2022-11-18 18:38:59,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:38:59,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:38:59,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:38:59,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:38:59,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:38:59,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63472261] [2022-11-18 18:38:59,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63472261] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:38:59,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:38:59,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:38:59,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819307426] [2022-11-18 18:38:59,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:38:59,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:38:59,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:38:59,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:38:59,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:38:59,395 INFO L87 Difference]: Start difference. First operand 10156 states and 15144 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:01,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:39:01,997 INFO L93 Difference]: Finished difference Result 25072 states and 36842 transitions. [2022-11-18 18:39:01,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:39:01,998 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-11-18 18:39:01,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:39:02,037 INFO L225 Difference]: With dead ends: 25072 [2022-11-18 18:39:02,037 INFO L226 Difference]: Without dead ends: 17230 [2022-11-18 18:39:02,049 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 [2022-11-18 18:39:02,049 INFO L413 NwaCegarLoop]: 1650 mSDtfsCounter, 1508 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1508 SdHoareTripleChecker+Valid, 1754 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:39:02,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1508 Valid, 1754 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:39:02,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17230 states. [2022-11-18 18:39:04,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17230 to 17228. [2022-11-18 18:39:04,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17228 states, 17226 states have (on average 1.4587251828631138) internal successors, (25128), 17227 states have internal predecessors, (25128), 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) [2022-11-18 18:39:04,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17228 states to 17228 states and 25128 transitions. [2022-11-18 18:39:04,641 INFO L78 Accepts]: Start accepts. Automaton has 17228 states and 25128 transitions. Word has length 81 [2022-11-18 18:39:04,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:39:04,641 INFO L495 AbstractCegarLoop]: Abstraction has 17228 states and 25128 transitions. [2022-11-18 18:39:04,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:04,642 INFO L276 IsEmpty]: Start isEmpty. Operand 17228 states and 25128 transitions. [2022-11-18 18:39:04,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-18 18:39:04,648 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:04,648 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:39:04,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 18:39:04,649 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:39:04,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:04,650 INFO L85 PathProgramCache]: Analyzing trace with hash -730351122, now seen corresponding path program 1 times [2022-11-18 18:39:04,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:04,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329504443] [2022-11-18 18:39:04,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:04,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:04,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:04,968 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:39:04,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:04,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329504443] [2022-11-18 18:39:04,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329504443] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:39:04,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:39:04,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 18:39:04,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670900388] [2022-11-18 18:39:04,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:39:04,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 18:39:04,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:04,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 18:39:04,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:39:04,971 INFO L87 Difference]: Start difference. First operand 17228 states and 25128 transitions. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:22,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:39:22,831 INFO L93 Difference]: Finished difference Result 120284 states and 173616 transitions. [2022-11-18 18:39:22,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:39:22,832 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2022-11-18 18:39:22,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:39:23,148 INFO L225 Difference]: With dead ends: 120284 [2022-11-18 18:39:23,148 INFO L226 Difference]: Without dead ends: 109786 [2022-11-18 18:39:23,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-11-18 18:39:23,187 INFO L413 NwaCegarLoop]: 1668 mSDtfsCounter, 9869 mSDsluCounter, 2988 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9869 SdHoareTripleChecker+Valid, 4656 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:39:23,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9869 Valid, 4656 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:39:23,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109786 states. [2022-11-18 18:39:30,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109786 to 29964. [2022-11-18 18:39:30,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29964 states, 29962 states have (on average 1.4452973766771244) internal successors, (43304), 29963 states have internal predecessors, (43304), 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) [2022-11-18 18:39:30,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29964 states to 29964 states and 43304 transitions. [2022-11-18 18:39:30,264 INFO L78 Accepts]: Start accepts. Automaton has 29964 states and 43304 transitions. Word has length 104 [2022-11-18 18:39:30,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:39:30,264 INFO L495 AbstractCegarLoop]: Abstraction has 29964 states and 43304 transitions. [2022-11-18 18:39:30,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:39:30,265 INFO L276 IsEmpty]: Start isEmpty. Operand 29964 states and 43304 transitions. [2022-11-18 18:39:30,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-18 18:39:30,272 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:30,273 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:39:30,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 18:39:30,273 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:39:30,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:30,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1211718382, now seen corresponding path program 1 times [2022-11-18 18:39:30,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:39:30,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925470461] [2022-11-18 18:39:30,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:30,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:39:30,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:30,521 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 18:39:30,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:39:30,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925470461] [2022-11-18 18:39:30,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925470461] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:39:30,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:39:30,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 18:39:30,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630371333] [2022-11-18 18:39:30,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:39:30,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 18:39:30,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:39:30,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 18:39:30,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:39:30,526 INFO L87 Difference]: Start difference. First operand 29964 states and 43304 transitions. Second operand has 9 states, 9 states have (on average 11.222222222222221) internal successors, (101), 9 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)