./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.06.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2d6340-9b1e-427b-b515-3b53d5e9c8d5/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2d6340-9b1e-427b-b515-3b53d5e9c8d5/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2d6340-9b1e-427b-b515-3b53d5e9c8d5/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2d6340-9b1e-427b-b515-3b53d5e9c8d5/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.06.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2d6340-9b1e-427b-b515-3b53d5e9c8d5/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2d6340-9b1e-427b-b515-3b53d5e9c8d5/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 52e4ee61a76abd07bd19c87e00a938922ca891ef038e845cba6c6b4d21ef1798 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:02:16,454 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:02:16,457 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:02:16,504 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:02:16,506 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:02:16,510 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:02:16,513 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:02:16,517 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:02:16,520 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:02:16,526 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:02:16,528 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:02:16,530 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:02:16,531 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:02:16,534 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:02:16,536 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:02:16,540 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:02:16,542 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:02:16,544 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:02:16,545 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:02:16,554 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:02:16,556 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:02:16,559 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:02:16,561 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:02:16,562 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:02:16,573 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:02:16,575 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:02:16,576 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:02:16,578 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:02:16,580 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:02:16,581 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:02:16,581 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:02:16,582 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:02:16,585 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:02:16,586 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:02:16,589 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:02:16,590 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:02:16,591 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:02:16,592 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:02:16,592 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:02:16,594 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:02:16,595 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:02:16,596 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2d6340-9b1e-427b-b515-3b53d5e9c8d5/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:02:16,645 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:02:16,645 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:02:16,646 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:02:16,646 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:02:16,647 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:02:16,648 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:02:16,648 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:02:16,649 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:02:16,649 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:02:16,649 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:02:16,650 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:02:16,651 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:02:16,651 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:02:16,651 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:02:16,651 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:02:16,652 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:02:16,652 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:02:16,652 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:02:16,652 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:02:16,653 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:02:16,653 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:02:16,653 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:02:16,653 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:02:16,654 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:02:16,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:02:16,654 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:02:16,654 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:02:16,655 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:02:16,655 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:02:16,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:02:16,656 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:02:16,656 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:02:16,657 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:02:16,657 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_5d2d6340-9b1e-427b-b515-3b53d5e9c8d5/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2d6340-9b1e-427b-b515-3b53d5e9c8d5/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52e4ee61a76abd07bd19c87e00a938922ca891ef038e845cba6c6b4d21ef1798 [2022-11-20 11:02:17,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:02:17,082 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:02:17,085 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:02:17,087 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:02:17,087 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:02:17,089 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2d6340-9b1e-427b-b515-3b53d5e9c8d5/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.06.cil-1.c [2022-11-20 11:02:20,267 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:02:21,129 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:02:21,130 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2d6340-9b1e-427b-b515-3b53d5e9c8d5/sv-benchmarks/c/combinations/Problem05_label42+token_ring.06.cil-1.c [2022-11-20 11:02:21,186 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2d6340-9b1e-427b-b515-3b53d5e9c8d5/bin/uautomizer-ug76WZFUDN/data/55713d974/7cb355b4cf1447e9badf378bf857b7e8/FLAG2001145c1 [2022-11-20 11:02:21,208 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2d6340-9b1e-427b-b515-3b53d5e9c8d5/bin/uautomizer-ug76WZFUDN/data/55713d974/7cb355b4cf1447e9badf378bf857b7e8 [2022-11-20 11:02:21,212 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:02:21,214 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:02:21,217 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:02:21,217 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:02:21,222 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:02:21,223 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:02:21" (1/1) ... [2022-11-20 11:02:21,224 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f40909f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:02:21, skipping insertion in model container [2022-11-20 11:02:21,225 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:02:21" (1/1) ... [2022-11-20 11:02:21,235 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:02:21,521 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:02:24,029 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2d6340-9b1e-427b-b515-3b53d5e9c8d5/sv-benchmarks/c/combinations/Problem05_label42+token_ring.06.cil-1.c[378560,378573] [2022-11-20 11:02:24,069 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2d6340-9b1e-427b-b515-3b53d5e9c8d5/sv-benchmarks/c/combinations/Problem05_label42+token_ring.06.cil-1.c[383339,383352] [2022-11-20 11:02:24,332 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:02:24,346 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:02:25,738 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2d6340-9b1e-427b-b515-3b53d5e9c8d5/sv-benchmarks/c/combinations/Problem05_label42+token_ring.06.cil-1.c[378560,378573] [2022-11-20 11:02:25,762 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2d6340-9b1e-427b-b515-3b53d5e9c8d5/sv-benchmarks/c/combinations/Problem05_label42+token_ring.06.cil-1.c[383339,383352] [2022-11-20 11:02:25,791 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:02:25,906 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:02:25,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:02:25 WrapperNode [2022-11-20 11:02:25,907 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:02:25,908 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:02:25,908 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:02:25,908 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:02:25,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:02:25" (1/1) ... [2022-11-20 11:02:26,061 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:02:25" (1/1) ... [2022-11-20 11:02:26,430 INFO L138 Inliner]: procedures = 56, calls = 60, calls flagged for inlining = 33, calls inlined = 33, statements flattened = 12856 [2022-11-20 11:02:26,431 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:02:26,432 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:02:26,432 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:02:26,432 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:02:26,442 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:02:25" (1/1) ... [2022-11-20 11:02:26,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:02:25" (1/1) ... [2022-11-20 11:02:26,581 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:02:25" (1/1) ... [2022-11-20 11:02:26,582 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:02:25" (1/1) ... [2022-11-20 11:02:26,819 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:02:25" (1/1) ... [2022-11-20 11:02:26,865 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:02:25" (1/1) ... [2022-11-20 11:02:26,888 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:02:25" (1/1) ... [2022-11-20 11:02:26,922 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:02:25" (1/1) ... [2022-11-20 11:02:27,068 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:02:27,084 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:02:27,084 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:02:27,084 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:02:27,087 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:02:25" (1/1) ... [2022-11-20 11:02:27,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:02:27,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2d6340-9b1e-427b-b515-3b53d5e9c8d5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:02:27,124 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2d6340-9b1e-427b-b515-3b53d5e9c8d5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:02:27,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d2d6340-9b1e-427b-b515-3b53d5e9c8d5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:02:27,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:02:27,216 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-20 11:02:27,216 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-20 11:02:27,216 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-20 11:02:27,217 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-20 11:02:27,217 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-20 11:02:27,217 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-20 11:02:27,217 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-11-20 11:02:27,217 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-11-20 11:02:27,217 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-20 11:02:27,217 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-20 11:02:27,217 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-20 11:02:27,218 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-20 11:02:27,218 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-20 11:02:27,218 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-20 11:02:27,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:02:27,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:02:27,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:02:27,438 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:02:27,452 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:02:37,931 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:02:37,960 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:02:37,960 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-20 11:02:37,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:02:37 BoogieIcfgContainer [2022-11-20 11:02:37,965 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:02:37,980 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:02:37,981 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:02:37,984 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:02:37,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:02:21" (1/3) ... [2022-11-20 11:02:37,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bca0c97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:02:37, skipping insertion in model container [2022-11-20 11:02:37,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:02:25" (2/3) ... [2022-11-20 11:02:37,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bca0c97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:02:37, skipping insertion in model container [2022-11-20 11:02:37,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:02:37" (3/3) ... [2022-11-20 11:02:37,987 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.06.cil-1.c [2022-11-20 11:02:38,009 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:02:38,009 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-20 11:02:38,107 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:02:38,115 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;@59adab9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:02:38,115 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-20 11:02:38,129 INFO L276 IsEmpty]: Start isEmpty. Operand has 2423 states, 2391 states have (on average 1.8515265579255542) internal successors, (4427), 2396 states have internal predecessors, (4427), 22 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-20 11:02:38,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-20 11:02:38,148 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:02:38,149 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:02:38,150 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:02:38,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:02:38,156 INFO L85 PathProgramCache]: Analyzing trace with hash 787057146, now seen corresponding path program 1 times [2022-11-20 11:02:38,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:02:38,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970275815] [2022-11-20 11:02:38,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:02:38,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:02:38,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:38,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:02:38,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:38,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 11:02:38,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:38,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 11:02:38,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:38,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 11:02:38,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:38,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-20 11:02:38,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:38,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:02:38,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:02:38,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970275815] [2022-11-20 11:02:38,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970275815] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:02:38,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:02:38,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:02:38,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742703406] [2022-11-20 11:02:38,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:02:38,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:02:38,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:02:38,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:02:38,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:02:38,766 INFO L87 Difference]: Start difference. First operand has 2423 states, 2391 states have (on average 1.8515265579255542) internal successors, (4427), 2396 states have internal predecessors, (4427), 22 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:02:40,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:02:40,607 INFO L93 Difference]: Finished difference Result 4911 states and 9054 transitions. [2022-11-20 11:02:40,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:02:40,613 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2022-11-20 11:02:40,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:02:40,662 INFO L225 Difference]: With dead ends: 4911 [2022-11-20 11:02:40,663 INFO L226 Difference]: Without dead ends: 2431 [2022-11-20 11:02:40,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:02:40,683 INFO L413 NwaCegarLoop]: 4249 mSDtfsCounter, 602 mSDsluCounter, 12327 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 16576 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:02:40,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [620 Valid, 16576 Invalid, 620 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [48 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 11:02:40,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2022-11-20 11:02:40,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 2355. [2022-11-20 11:02:40,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2355 states, 2325 states have (on average 1.8391397849462365) internal successors, (4276), 2328 states have internal predecessors, (4276), 22 states have call successors, (22), 7 states have call predecessors, (22), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-20 11:02:40,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2355 states to 2355 states and 4318 transitions. [2022-11-20 11:02:40,887 INFO L78 Accepts]: Start accepts. Automaton has 2355 states and 4318 transitions. Word has length 113 [2022-11-20 11:02:40,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:02:40,887 INFO L495 AbstractCegarLoop]: Abstraction has 2355 states and 4318 transitions. [2022-11-20 11:02:40,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:02:40,888 INFO L276 IsEmpty]: Start isEmpty. Operand 2355 states and 4318 transitions. [2022-11-20 11:02:40,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-20 11:02:40,893 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:02:40,893 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:02:40,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:02:40,894 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:02:40,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:02:40,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1110439620, now seen corresponding path program 1 times [2022-11-20 11:02:40,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:02:40,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233486496] [2022-11-20 11:02:40,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:02:40,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:02:40,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:41,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:02:41,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:41,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 11:02:41,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:41,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 11:02:41,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:41,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 11:02:41,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:41,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-20 11:02:41,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:41,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:02:41,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:02:41,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233486496] [2022-11-20 11:02:41,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233486496] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:02:41,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:02:41,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:02:41,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844592690] [2022-11-20 11:02:41,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:02:41,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:02:41,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:02:41,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:02:41,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:02:41,354 INFO L87 Difference]: Start difference. First operand 2355 states and 4318 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:02:44,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:02:44,902 INFO L93 Difference]: Finished difference Result 2966 states and 5298 transitions. [2022-11-20 11:02:44,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:02:44,908 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2022-11-20 11:02:44,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:02:44,932 INFO L225 Difference]: With dead ends: 2966 [2022-11-20 11:02:44,932 INFO L226 Difference]: Without dead ends: 2746 [2022-11-20 11:02:44,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:02:44,941 INFO L413 NwaCegarLoop]: 4321 mSDtfsCounter, 4803 mSDsluCounter, 17021 mSDsCounter, 0 mSdLazyCounter, 2120 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4816 SdHoareTripleChecker+Valid, 21342 SdHoareTripleChecker+Invalid, 2180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 2120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:02:44,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4816 Valid, 21342 Invalid, 2180 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [60 Valid, 2120 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-20 11:02:44,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2746 states. [2022-11-20 11:02:45,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2746 to 2583. [2022-11-20 11:02:45,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2583 states, 2528 states have (on average 1.8184335443037976) internal successors, (4597), 2533 states have internal predecessors, (4597), 39 states have call successors, (39), 13 states have call predecessors, (39), 14 states have return successors, (44), 38 states have call predecessors, (44), 37 states have call successors, (44) [2022-11-20 11:02:45,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2583 states to 2583 states and 4680 transitions. [2022-11-20 11:02:45,118 INFO L78 Accepts]: Start accepts. Automaton has 2583 states and 4680 transitions. Word has length 113 [2022-11-20 11:02:45,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:02:45,122 INFO L495 AbstractCegarLoop]: Abstraction has 2583 states and 4680 transitions. [2022-11-20 11:02:45,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:02:45,123 INFO L276 IsEmpty]: Start isEmpty. Operand 2583 states and 4680 transitions. [2022-11-20 11:02:45,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-20 11:02:45,137 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:02:45,138 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:02:45,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:02:45,138 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:02:45,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:02:45,139 INFO L85 PathProgramCache]: Analyzing trace with hash 240945598, now seen corresponding path program 1 times [2022-11-20 11:02:45,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:02:45,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392167518] [2022-11-20 11:02:45,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:02:45,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:02:45,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:45,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:02:45,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:45,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 11:02:45,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:45,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 11:02:45,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:45,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 11:02:45,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:45,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-20 11:02:45,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:45,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:02:45,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:02:45,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392167518] [2022-11-20 11:02:45,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392167518] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:02:45,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:02:45,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:02:45,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435448160] [2022-11-20 11:02:45,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:02:45,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:02:45,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:02:45,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:02:45,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:02:45,565 INFO L87 Difference]: Start difference. First operand 2583 states and 4680 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:02:48,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:02:48,626 INFO L93 Difference]: Finished difference Result 3740 states and 6520 transitions. [2022-11-20 11:02:48,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:02:48,627 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2022-11-20 11:02:48,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:02:48,649 INFO L225 Difference]: With dead ends: 3740 [2022-11-20 11:02:48,650 INFO L226 Difference]: Without dead ends: 3294 [2022-11-20 11:02:48,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:02:48,665 INFO L413 NwaCegarLoop]: 4296 mSDtfsCounter, 4828 mSDsluCounter, 16958 mSDsCounter, 0 mSdLazyCounter, 1996 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4841 SdHoareTripleChecker+Valid, 21254 SdHoareTripleChecker+Invalid, 2062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:02:48,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4841 Valid, 21254 Invalid, 2062 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [66 Valid, 1996 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-20 11:02:48,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3294 states. [2022-11-20 11:02:48,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3294 to 3003. [2022-11-20 11:02:48,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3003 states, 2904 states have (on average 1.7837465564738293) internal successors, (5180), 2911 states have internal predecessors, (5180), 69 states have call successors, (69), 25 states have call predecessors, (69), 28 states have return successors, (84), 70 states have call predecessors, (84), 67 states have call successors, (84) [2022-11-20 11:02:48,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3003 states to 3003 states and 5333 transitions. [2022-11-20 11:02:48,830 INFO L78 Accepts]: Start accepts. Automaton has 3003 states and 5333 transitions. Word has length 113 [2022-11-20 11:02:48,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:02:48,830 INFO L495 AbstractCegarLoop]: Abstraction has 3003 states and 5333 transitions. [2022-11-20 11:02:48,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:02:48,831 INFO L276 IsEmpty]: Start isEmpty. Operand 3003 states and 5333 transitions. [2022-11-20 11:02:48,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-20 11:02:48,834 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:02:48,834 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:02:48,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:02:48,835 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:02:48,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:02:48,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1378029316, now seen corresponding path program 1 times [2022-11-20 11:02:48,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:02:48,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845830829] [2022-11-20 11:02:48,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:02:48,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:02:48,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:48,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:02:48,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:48,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 11:02:48,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:49,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 11:02:49,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:49,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 11:02:49,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:49,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-20 11:02:49,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:49,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:02:49,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:02:49,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845830829] [2022-11-20 11:02:49,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845830829] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:02:49,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:02:49,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:02:49,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222307481] [2022-11-20 11:02:49,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:02:49,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:02:49,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:02:49,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:02:49,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:02:49,099 INFO L87 Difference]: Start difference. First operand 3003 states and 5333 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:02:52,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:02:52,005 INFO L93 Difference]: Finished difference Result 5254 states and 8905 transitions. [2022-11-20 11:02:52,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:02:52,006 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2022-11-20 11:02:52,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:02:52,030 INFO L225 Difference]: With dead ends: 5254 [2022-11-20 11:02:52,033 INFO L226 Difference]: Without dead ends: 4388 [2022-11-20 11:02:52,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:02:52,048 INFO L413 NwaCegarLoop]: 4318 mSDtfsCounter, 4803 mSDsluCounter, 17021 mSDsCounter, 0 mSdLazyCounter, 2110 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4816 SdHoareTripleChecker+Valid, 21339 SdHoareTripleChecker+Invalid, 2172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:02:52,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4816 Valid, 21339 Invalid, 2172 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 2110 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-20 11:02:52,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4388 states. [2022-11-20 11:02:52,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4388 to 3845. [2022-11-20 11:02:52,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3845 states, 3658 states have (on average 1.7353745215965009) internal successors, (6348), 3669 states have internal predecessors, (6348), 129 states have call successors, (129), 49 states have call predecessors, (129), 56 states have return successors, (170), 134 states have call predecessors, (170), 127 states have call successors, (170) [2022-11-20 11:02:52,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3845 states to 3845 states and 6647 transitions. [2022-11-20 11:02:52,281 INFO L78 Accepts]: Start accepts. Automaton has 3845 states and 6647 transitions. Word has length 113 [2022-11-20 11:02:52,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:02:52,288 INFO L495 AbstractCegarLoop]: Abstraction has 3845 states and 6647 transitions. [2022-11-20 11:02:52,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:02:52,288 INFO L276 IsEmpty]: Start isEmpty. Operand 3845 states and 6647 transitions. [2022-11-20 11:02:52,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-20 11:02:52,291 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:02:52,292 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:02:52,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:02:52,292 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:02:52,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:02:52,293 INFO L85 PathProgramCache]: Analyzing trace with hash 2033428990, now seen corresponding path program 1 times [2022-11-20 11:02:52,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:02:52,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832073464] [2022-11-20 11:02:52,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:02:52,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:02:52,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:52,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:02:52,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:52,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 11:02:52,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:52,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 11:02:52,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:52,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 11:02:52,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:52,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-20 11:02:52,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:52,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:02:52,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:02:52,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832073464] [2022-11-20 11:02:52,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832073464] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:02:52,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:02:52,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:02:52,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84600476] [2022-11-20 11:02:52,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:02:52,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:02:52,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:02:52,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:02:52,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:02:52,508 INFO L87 Difference]: Start difference. First operand 3845 states and 6647 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:02:55,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:02:55,762 INFO L93 Difference]: Finished difference Result 8280 states and 13689 transitions. [2022-11-20 11:02:55,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:02:55,763 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2022-11-20 11:02:55,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:02:55,801 INFO L225 Difference]: With dead ends: 8280 [2022-11-20 11:02:55,801 INFO L226 Difference]: Without dead ends: 6572 [2022-11-20 11:02:55,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:02:55,812 INFO L413 NwaCegarLoop]: 4318 mSDtfsCounter, 4803 mSDsluCounter, 17021 mSDsCounter, 0 mSdLazyCounter, 2101 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4816 SdHoareTripleChecker+Valid, 21339 SdHoareTripleChecker+Invalid, 2163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:02:55,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4816 Valid, 21339 Invalid, 2163 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 2101 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-20 11:02:55,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6572 states. [2022-11-20 11:02:56,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6572 to 5535. [2022-11-20 11:02:56,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5535 states, 5172 states have (on average 1.6805877803557618) internal successors, (8692), 5191 states have internal predecessors, (8692), 249 states have call successors, (249), 97 states have call predecessors, (249), 112 states have return successors, (360), 262 states have call predecessors, (360), 247 states have call successors, (360) [2022-11-20 11:02:56,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5535 states to 5535 states and 9301 transitions. [2022-11-20 11:02:56,213 INFO L78 Accepts]: Start accepts. Automaton has 5535 states and 9301 transitions. Word has length 113 [2022-11-20 11:02:56,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:02:56,214 INFO L495 AbstractCegarLoop]: Abstraction has 5535 states and 9301 transitions. [2022-11-20 11:02:56,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:02:56,215 INFO L276 IsEmpty]: Start isEmpty. Operand 5535 states and 9301 transitions. [2022-11-20 11:02:56,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-20 11:02:56,219 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:02:56,219 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:02:56,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:02:56,220 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:02:56,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:02:56,221 INFO L85 PathProgramCache]: Analyzing trace with hash 2004928700, now seen corresponding path program 1 times [2022-11-20 11:02:56,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:02:56,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014625226] [2022-11-20 11:02:56,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:02:56,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:02:56,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:56,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:02:56,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:56,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 11:02:56,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:56,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 11:02:56,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:56,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 11:02:56,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:56,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-20 11:02:56,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:02:56,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:02:56,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:02:56,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014625226] [2022-11-20 11:02:56,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014625226] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:02:56,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:02:56,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:02:56,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512134526] [2022-11-20 11:02:56,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:02:56,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:02:56,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:02:56,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:02:56,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:02:56,451 INFO L87 Difference]: Start difference. First operand 5535 states and 9301 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:03:00,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:03:00,132 INFO L93 Difference]: Finished difference Result 14330 states and 23313 transitions. [2022-11-20 11:03:00,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:03:00,132 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2022-11-20 11:03:00,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:03:00,212 INFO L225 Difference]: With dead ends: 14330 [2022-11-20 11:03:00,212 INFO L226 Difference]: Without dead ends: 10932 [2022-11-20 11:03:00,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:03:00,232 INFO L413 NwaCegarLoop]: 4318 mSDtfsCounter, 4803 mSDsluCounter, 17021 mSDsCounter, 0 mSdLazyCounter, 2092 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4816 SdHoareTripleChecker+Valid, 21339 SdHoareTripleChecker+Invalid, 2154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:03:00,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4816 Valid, 21339 Invalid, 2154 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 2092 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-20 11:03:00,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10932 states. [2022-11-20 11:03:01,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10932 to 8929. [2022-11-20 11:03:01,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8929 states, 8214 states have (on average 1.6313610908205503) internal successors, (13400), 8249 states have internal predecessors, (13400), 489 states have call successors, (489), 193 states have call predecessors, (489), 224 states have return successors, (794), 518 states have call predecessors, (794), 487 states have call successors, (794) [2022-11-20 11:03:01,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8929 states to 8929 states and 14683 transitions. [2022-11-20 11:03:01,163 INFO L78 Accepts]: Start accepts. Automaton has 8929 states and 14683 transitions. Word has length 113 [2022-11-20 11:03:01,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:03:01,164 INFO L495 AbstractCegarLoop]: Abstraction has 8929 states and 14683 transitions. [2022-11-20 11:03:01,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:03:01,165 INFO L276 IsEmpty]: Start isEmpty. Operand 8929 states and 14683 transitions. [2022-11-20 11:03:01,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-20 11:03:01,173 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:03:01,173 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:03:01,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:03:01,174 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:03:01,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:01,177 INFO L85 PathProgramCache]: Analyzing trace with hash 64346686, now seen corresponding path program 1 times [2022-11-20 11:03:01,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:01,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44901526] [2022-11-20 11:03:01,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:01,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:01,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:01,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:03:01,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:01,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 11:03:01,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:01,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 11:03:01,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:01,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 11:03:01,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:01,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-20 11:03:01,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:01,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:01,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:01,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44901526] [2022-11-20 11:03:01,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44901526] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:01,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:03:01,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:03:01,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236083198] [2022-11-20 11:03:01,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:01,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:03:01,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:01,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:03:01,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:03:01,426 INFO L87 Difference]: Start difference. First operand 8929 states and 14683 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:03:05,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:03:05,333 INFO L93 Difference]: Finished difference Result 26428 states and 42749 transitions. [2022-11-20 11:03:05,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:03:05,334 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2022-11-20 11:03:05,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:03:05,426 INFO L225 Difference]: With dead ends: 26428 [2022-11-20 11:03:05,426 INFO L226 Difference]: Without dead ends: 19636 [2022-11-20 11:03:05,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:03:05,459 INFO L413 NwaCegarLoop]: 4318 mSDtfsCounter, 4803 mSDsluCounter, 17021 mSDsCounter, 0 mSdLazyCounter, 2083 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4816 SdHoareTripleChecker+Valid, 21339 SdHoareTripleChecker+Invalid, 2145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:03:05,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4816 Valid, 21339 Invalid, 2145 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 2083 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-20 11:03:05,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19636 states. [2022-11-20 11:03:07,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19636 to 15747. [2022-11-20 11:03:07,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15747 states, 14328 states have (on average 1.5954773869346734) internal successors, (22860), 14395 states have internal predecessors, (22860), 969 states have call successors, (969), 385 states have call predecessors, (969), 448 states have return successors, (1824), 1030 states have call predecessors, (1824), 967 states have call successors, (1824) [2022-11-20 11:03:07,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15747 states to 15747 states and 25653 transitions. [2022-11-20 11:03:07,330 INFO L78 Accepts]: Start accepts. Automaton has 15747 states and 25653 transitions. Word has length 113 [2022-11-20 11:03:07,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:03:07,330 INFO L495 AbstractCegarLoop]: Abstraction has 15747 states and 25653 transitions. [2022-11-20 11:03:07,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:03:07,331 INFO L276 IsEmpty]: Start isEmpty. Operand 15747 states and 25653 transitions. [2022-11-20 11:03:07,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-20 11:03:07,349 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:03:07,349 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:03:07,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:03:07,350 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:03:07,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:07,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1941409916, now seen corresponding path program 1 times [2022-11-20 11:03:07,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:07,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722029625] [2022-11-20 11:03:07,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:07,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:07,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:07,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:03:07,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:07,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 11:03:07,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:07,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 11:03:07,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:07,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 11:03:07,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:07,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-20 11:03:07,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:07,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:07,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:07,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722029625] [2022-11-20 11:03:07,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722029625] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:07,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:03:07,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:03:07,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429317458] [2022-11-20 11:03:07,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:07,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:03:07,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:07,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:03:07,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:03:07,608 INFO L87 Difference]: Start difference. First operand 15747 states and 25653 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:03:13,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:03:13,908 INFO L93 Difference]: Finished difference Result 56574 states and 91179 transitions. [2022-11-20 11:03:13,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 11:03:13,908 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2022-11-20 11:03:13,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:03:14,120 INFO L225 Difference]: With dead ends: 56574 [2022-11-20 11:03:14,121 INFO L226 Difference]: Without dead ends: 42964 [2022-11-20 11:03:14,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-20 11:03:14,185 INFO L413 NwaCegarLoop]: 4316 mSDtfsCounter, 5061 mSDsluCounter, 17013 mSDsCounter, 0 mSdLazyCounter, 2062 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5081 SdHoareTripleChecker+Valid, 21329 SdHoareTripleChecker+Invalid, 2129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 2062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:03:14,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5081 Valid, 21329 Invalid, 2129 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 2062 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-20 11:03:14,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42964 states. [2022-11-20 11:03:17,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42964 to 29253. [2022-11-20 11:03:17,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29253 states, 26490 states have (on average 1.575839939599849) internal successors, (41744), 26621 states have internal predecessors, (41744), 1865 states have call successors, (1865), 769 states have call predecessors, (1865), 896 states have return successors, (4306), 1990 states have call predecessors, (4306), 1863 states have call successors, (4306) [2022-11-20 11:03:17,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29253 states to 29253 states and 47915 transitions. [2022-11-20 11:03:17,158 INFO L78 Accepts]: Start accepts. Automaton has 29253 states and 47915 transitions. Word has length 113 [2022-11-20 11:03:17,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:03:17,158 INFO L495 AbstractCegarLoop]: Abstraction has 29253 states and 47915 transitions. [2022-11-20 11:03:17,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:03:17,159 INFO L276 IsEmpty]: Start isEmpty. Operand 29253 states and 47915 transitions. [2022-11-20 11:03:17,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-20 11:03:17,191 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:03:17,191 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:03:17,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:03:17,192 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:03:17,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:17,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1170676350, now seen corresponding path program 1 times [2022-11-20 11:03:17,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:17,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562911145] [2022-11-20 11:03:17,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:17,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:17,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:17,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:03:17,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:17,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 11:03:17,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:17,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 11:03:17,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:17,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 11:03:17,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:17,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-20 11:03:17,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:17,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:17,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:17,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562911145] [2022-11-20 11:03:17,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562911145] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:17,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:03:17,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:03:17,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18631265] [2022-11-20 11:03:17,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:17,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:03:17,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:17,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:03:17,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:03:17,402 INFO L87 Difference]: Start difference. First operand 29253 states and 47915 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:03:28,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:03:28,638 INFO L93 Difference]: Finished difference Result 107011 states and 175039 transitions. [2022-11-20 11:03:28,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 11:03:28,639 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 113 [2022-11-20 11:03:28,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:03:29,223 INFO L225 Difference]: With dead ends: 107011 [2022-11-20 11:03:29,224 INFO L226 Difference]: Without dead ends: 79895 [2022-11-20 11:03:29,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-20 11:03:29,363 INFO L413 NwaCegarLoop]: 4316 mSDtfsCounter, 4996 mSDsluCounter, 17013 mSDsCounter, 0 mSdLazyCounter, 2007 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5016 SdHoareTripleChecker+Valid, 21329 SdHoareTripleChecker+Invalid, 2074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 2007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:03:29,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5016 Valid, 21329 Invalid, 2074 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 2007 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-20 11:03:29,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79895 states. [2022-11-20 11:03:36,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79895 to 56327. [2022-11-20 11:03:36,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56327 states, 50940 states have (on average 1.5670985473105614) internal successors, (79828), 51199 states have internal predecessors, (79828), 3593 states have call successors, (3593), 1537 states have call predecessors, (3593), 1792 states have return successors, (10664), 3846 states have call predecessors, (10664), 3591 states have call successors, (10664) [2022-11-20 11:03:36,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56327 states to 56327 states and 94085 transitions. [2022-11-20 11:03:36,579 INFO L78 Accepts]: Start accepts. Automaton has 56327 states and 94085 transitions. Word has length 113 [2022-11-20 11:03:36,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:03:36,579 INFO L495 AbstractCegarLoop]: Abstraction has 56327 states and 94085 transitions. [2022-11-20 11:03:36,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:03:36,580 INFO L276 IsEmpty]: Start isEmpty. Operand 56327 states and 94085 transitions. [2022-11-20 11:03:36,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-20 11:03:36,630 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:03:36,630 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:03:36,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:03:36,631 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:03:36,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:36,631 INFO L85 PathProgramCache]: Analyzing trace with hash 584400128, now seen corresponding path program 1 times [2022-11-20 11:03:36,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:36,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134663661] [2022-11-20 11:03:36,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:36,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:36,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:36,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:03:36,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:36,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 11:03:36,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:36,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 11:03:36,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:36,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 11:03:36,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:36,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-20 11:03:36,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:36,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:36,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:36,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134663661] [2022-11-20 11:03:36,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134663661] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:36,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:03:36,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:03:36,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988656882] [2022-11-20 11:03:36,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:36,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:03:36,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:36,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:03:36,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:03:36,852 INFO L87 Difference]: Start difference. First operand 56327 states and 94085 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)