./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14db152-60ed-42cb-acef-3227fd54509f/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14db152-60ed-42cb-acef-3227fd54509f/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14db152-60ed-42cb-acef-3227fd54509f/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14db152-60ed-42cb-acef-3227fd54509f/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14db152-60ed-42cb-acef-3227fd54509f/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14db152-60ed-42cb-acef-3227fd54509f/bin/uautomizer-uyxdKDjOR8 --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 bf9b303f0455860ff73b360d674f9b56750c61e03c2589dbf0115b0e5bdacb76 --- 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-2329fc7 [2022-12-13 11:41:14,566 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 11:41:14,567 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 11:41:14,581 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 11:41:14,582 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 11:41:14,582 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 11:41:14,583 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 11:41:14,584 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 11:41:14,585 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 11:41:14,586 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 11:41:14,587 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 11:41:14,588 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 11:41:14,588 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 11:41:14,589 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 11:41:14,589 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 11:41:14,590 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 11:41:14,591 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 11:41:14,591 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 11:41:14,593 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 11:41:14,594 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 11:41:14,595 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 11:41:14,596 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 11:41:14,597 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 11:41:14,597 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 11:41:14,600 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 11:41:14,600 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 11:41:14,600 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 11:41:14,601 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 11:41:14,601 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 11:41:14,602 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 11:41:14,602 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 11:41:14,603 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 11:41:14,603 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 11:41:14,604 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 11:41:14,605 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 11:41:14,605 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 11:41:14,605 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 11:41:14,606 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 11:41:14,606 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 11:41:14,606 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 11:41:14,607 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 11:41:14,608 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14db152-60ed-42cb-acef-3227fd54509f/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 11:41:14,628 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 11:41:14,628 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 11:41:14,629 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 11:41:14,629 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 11:41:14,629 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 11:41:14,629 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 11:41:14,630 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 11:41:14,630 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 11:41:14,630 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 11:41:14,630 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 11:41:14,630 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 11:41:14,631 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 11:41:14,631 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 11:41:14,631 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 11:41:14,631 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 11:41:14,631 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 11:41:14,631 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 11:41:14,631 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 11:41:14,631 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 11:41:14,631 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 11:41:14,632 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 11:41:14,632 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 11:41:14,632 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 11:41:14,632 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 11:41:14,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:41:14,632 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 11:41:14,632 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 11:41:14,633 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 11:41:14,633 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 11:41:14,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 11:41:14,633 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 11:41:14,633 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 11:41:14,633 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 11:41:14,633 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 11:41:14,637 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 11:41:14,637 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_b14db152-60ed-42cb-acef-3227fd54509f/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14db152-60ed-42cb-acef-3227fd54509f/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf9b303f0455860ff73b360d674f9b56750c61e03c2589dbf0115b0e5bdacb76 [2022-12-13 11:41:14,792 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 11:41:14,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 11:41:14,811 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 11:41:14,813 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 11:41:14,813 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 11:41:14,814 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14db152-60ed-42cb-acef-3227fd54509f/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2022-12-13 11:41:17,437 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 11:41:17,607 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 11:41:17,608 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14db152-60ed-42cb-acef-3227fd54509f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2022-12-13 11:41:17,623 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14db152-60ed-42cb-acef-3227fd54509f/bin/uautomizer-uyxdKDjOR8/data/3b12b39ef/f53a792880ea49439104c5f9258bbdc6/FLAG8ad82250f [2022-12-13 11:41:17,636 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14db152-60ed-42cb-acef-3227fd54509f/bin/uautomizer-uyxdKDjOR8/data/3b12b39ef/f53a792880ea49439104c5f9258bbdc6 [2022-12-13 11:41:17,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 11:41:17,640 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 11:41:17,641 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 11:41:17,641 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 11:41:17,644 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 11:41:17,644 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:41:17" (1/1) ... [2022-12-13 11:41:17,645 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9230783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:41:17, skipping insertion in model container [2022-12-13 11:41:17,645 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:41:17" (1/1) ... [2022-12-13 11:41:17,652 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 11:41:17,709 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:41:17,937 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_b14db152-60ed-42cb-acef-3227fd54509f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c[11904,11917] [2022-12-13 11:41:17,978 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:41:17,989 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 11:41:18,041 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_b14db152-60ed-42cb-acef-3227fd54509f/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c[11904,11917] [2022-12-13 11:41:18,068 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:41:18,080 INFO L208 MainTranslator]: Completed translation [2022-12-13 11:41:18,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:41:18 WrapperNode [2022-12-13 11:41:18,081 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 11:41:18,082 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 11:41:18,082 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 11:41:18,082 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 11:41:18,087 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:41:18" (1/1) ... [2022-12-13 11:41:18,098 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:41:18" (1/1) ... [2022-12-13 11:41:18,136 INFO L138 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 971 [2022-12-13 11:41:18,137 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 11:41:18,138 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 11:41:18,138 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 11:41:18,138 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 11:41:18,147 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:41:18" (1/1) ... [2022-12-13 11:41:18,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:41:18" (1/1) ... [2022-12-13 11:41:18,150 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:41:18" (1/1) ... [2022-12-13 11:41:18,150 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:41:18" (1/1) ... [2022-12-13 11:41:18,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:41:18" (1/1) ... [2022-12-13 11:41:18,166 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:41:18" (1/1) ... [2022-12-13 11:41:18,169 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:41:18" (1/1) ... [2022-12-13 11:41:18,171 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:41:18" (1/1) ... [2022-12-13 11:41:18,176 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 11:41:18,177 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 11:41:18,177 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 11:41:18,177 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 11:41:18,178 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:41:18" (1/1) ... [2022-12-13 11:41:18,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:41:18,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14db152-60ed-42cb-acef-3227fd54509f/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:41:18,206 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14db152-60ed-42cb-acef-3227fd54509f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 11:41:18,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b14db152-60ed-42cb-acef-3227fd54509f/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 11:41:18,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 11:41:18,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 11:41:18,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 11:41:18,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 11:41:18,366 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 11:41:18,368 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 11:41:18,915 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 11:41:18,925 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 11:41:18,925 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 11:41:18,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:41:18 BoogieIcfgContainer [2022-12-13 11:41:18,927 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 11:41:18,930 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 11:41:18,930 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 11:41:18,933 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 11:41:18,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 11:41:17" (1/3) ... [2022-12-13 11:41:18,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@81d371a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:41:18, skipping insertion in model container [2022-12-13 11:41:18,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:41:18" (2/3) ... [2022-12-13 11:41:18,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@81d371a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:41:18, skipping insertion in model container [2022-12-13 11:41:18,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:41:18" (3/3) ... [2022-12-13 11:41:18,936 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2022-12-13 11:41:18,954 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 11:41:18,954 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 11:41:19,009 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:41:19,014 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;@faa45df, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 11:41:19,014 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 11:41:19,019 INFO L276 IsEmpty]: Start isEmpty. Operand has 295 states, 252 states have (on average 1.6785714285714286) internal successors, (423), 294 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:19,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-12-13 11:41:19,032 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:41:19,033 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] [2022-12-13 11:41:19,033 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:41:19,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:41:19,038 INFO L85 PathProgramCache]: Analyzing trace with hash 526717400, now seen corresponding path program 1 times [2022-12-13 11:41:19,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:41:19,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327938400] [2022-12-13 11:41:19,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:41:19,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:41:19,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:41:19,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:41:19,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:41:19,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327938400] [2022-12-13 11:41:19,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327938400] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:41:19,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:41:19,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 11:41:19,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249488501] [2022-12-13 11:41:19,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:41:19,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:41:19,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:41:19,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:41:19,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:41:19,514 INFO L87 Difference]: Start difference. First operand has 295 states, 252 states have (on average 1.6785714285714286) internal successors, (423), 294 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:19,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:41:19,639 INFO L93 Difference]: Finished difference Result 516 states and 768 transitions. [2022-12-13 11:41:19,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 11:41:19,642 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2022-12-13 11:41:19,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:41:19,652 INFO L225 Difference]: With dead ends: 516 [2022-12-13 11:41:19,653 INFO L226 Difference]: Without dead ends: 248 [2022-12-13 11:41:19,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:41:19,659 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 118 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 1094 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:41:19,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 1094 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:41:19,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-12-13 11:41:19,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2022-12-13 11:41:19,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 1.4777327935222673) internal successors, (365), 247 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:19,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 365 transitions. [2022-12-13 11:41:19,705 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 365 transitions. Word has length 91 [2022-12-13 11:41:19,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:41:19,705 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 365 transitions. [2022-12-13 11:41:19,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:19,705 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 365 transitions. [2022-12-13 11:41:19,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-12-13 11:41:19,709 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:41:19,709 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:41:19,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 11:41:19,710 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:41:19,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:41:19,710 INFO L85 PathProgramCache]: Analyzing trace with hash 2028572103, now seen corresponding path program 1 times [2022-12-13 11:41:19,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:41:19,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309898104] [2022-12-13 11:41:19,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:41:19,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:41:19,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:41:19,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:41:19,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:41:19,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309898104] [2022-12-13 11:41:19,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309898104] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:41:19,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:41:19,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:41:19,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209685718] [2022-12-13 11:41:19,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:41:19,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:41:19,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:41:19,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:41:19,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:41:19,875 INFO L87 Difference]: Start difference. First operand 248 states and 365 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:19,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:41:19,930 INFO L93 Difference]: Finished difference Result 561 states and 856 transitions. [2022-12-13 11:41:19,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:41:19,931 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2022-12-13 11:41:19,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:41:19,933 INFO L225 Difference]: With dead ends: 561 [2022-12-13 11:41:19,933 INFO L226 Difference]: Without dead ends: 363 [2022-12-13 11:41:19,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:41:19,935 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 201 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:41:19,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 738 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:41:19,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2022-12-13 11:41:19,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 361. [2022-12-13 11:41:19,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 360 states have (on average 1.5027777777777778) internal successors, (541), 360 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:19,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 541 transitions. [2022-12-13 11:41:19,977 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 541 transitions. Word has length 130 [2022-12-13 11:41:19,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:41:19,977 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 541 transitions. [2022-12-13 11:41:19,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:19,977 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 541 transitions. [2022-12-13 11:41:19,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-12-13 11:41:19,981 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:41:19,982 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:41:19,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 11:41:19,982 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:41:19,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:41:19,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1858506137, now seen corresponding path program 1 times [2022-12-13 11:41:19,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:41:19,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996680723] [2022-12-13 11:41:19,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:41:19,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:41:20,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:41:20,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:41:20,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:41:20,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996680723] [2022-12-13 11:41:20,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996680723] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:41:20,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:41:20,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:41:20,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832262632] [2022-12-13 11:41:20,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:41:20,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:41:20,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:41:20,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:41:20,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:41:20,100 INFO L87 Difference]: Start difference. First operand 361 states and 541 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:20,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:41:20,159 INFO L93 Difference]: Finished difference Result 870 states and 1339 transitions. [2022-12-13 11:41:20,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:41:20,160 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-12-13 11:41:20,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:41:20,162 INFO L225 Difference]: With dead ends: 870 [2022-12-13 11:41:20,163 INFO L226 Difference]: Without dead ends: 565 [2022-12-13 11:41:20,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:41:20,165 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 188 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:41:20,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 626 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:41:20,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2022-12-13 11:41:20,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 563. [2022-12-13 11:41:20,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 562 states have (on average 1.5213523131672597) internal successors, (855), 562 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:20,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 855 transitions. [2022-12-13 11:41:20,208 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 855 transitions. Word has length 132 [2022-12-13 11:41:20,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:41:20,208 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 855 transitions. [2022-12-13 11:41:20,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:20,208 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 855 transitions. [2022-12-13 11:41:20,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-12-13 11:41:20,211 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:41:20,211 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:41:20,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 11:41:20,211 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:41:20,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:41:20,212 INFO L85 PathProgramCache]: Analyzing trace with hash -84400586, now seen corresponding path program 1 times [2022-12-13 11:41:20,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:41:20,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496866647] [2022-12-13 11:41:20,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:41:20,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:41:20,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:41:20,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:41:20,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:41:20,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496866647] [2022-12-13 11:41:20,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496866647] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:41:20,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:41:20,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:41:20,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890386154] [2022-12-13 11:41:20,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:41:20,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:41:20,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:41:20,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:41:20,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:41:20,310 INFO L87 Difference]: Start difference. First operand 563 states and 855 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:20,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:41:20,401 INFO L93 Difference]: Finished difference Result 1418 states and 2191 transitions. [2022-12-13 11:41:20,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:41:20,402 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2022-12-13 11:41:20,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:41:20,404 INFO L225 Difference]: With dead ends: 1418 [2022-12-13 11:41:20,405 INFO L226 Difference]: Without dead ends: 917 [2022-12-13 11:41:20,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:41:20,406 INFO L413 NwaCegarLoop]: 399 mSDtfsCounter, 175 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:41:20,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 666 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:41:20,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2022-12-13 11:41:20,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 915. [2022-12-13 11:41:20,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 915 states, 914 states have (on average 1.5306345733041575) internal successors, (1399), 914 states have internal predecessors, (1399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:20,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 915 states to 915 states and 1399 transitions. [2022-12-13 11:41:20,466 INFO L78 Accepts]: Start accepts. Automaton has 915 states and 1399 transitions. Word has length 134 [2022-12-13 11:41:20,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:41:20,466 INFO L495 AbstractCegarLoop]: Abstraction has 915 states and 1399 transitions. [2022-12-13 11:41:20,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:20,467 INFO L276 IsEmpty]: Start isEmpty. Operand 915 states and 1399 transitions. [2022-12-13 11:41:20,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-12-13 11:41:20,468 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:41:20,468 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:41:20,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 11:41:20,469 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:41:20,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:41:20,469 INFO L85 PathProgramCache]: Analyzing trace with hash 2009321658, now seen corresponding path program 1 times [2022-12-13 11:41:20,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:41:20,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884333214] [2022-12-13 11:41:20,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:41:20,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:41:20,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:41:20,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:41:20,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:41:20,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884333214] [2022-12-13 11:41:20,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884333214] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:41:20,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:41:20,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:41:20,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391735170] [2022-12-13 11:41:20,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:41:20,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:41:20,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:41:20,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:41:20,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:41:20,538 INFO L87 Difference]: Start difference. First operand 915 states and 1399 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:20,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:41:20,645 INFO L93 Difference]: Finished difference Result 2360 states and 3643 transitions. [2022-12-13 11:41:20,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:41:20,646 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2022-12-13 11:41:20,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:41:20,649 INFO L225 Difference]: With dead ends: 2360 [2022-12-13 11:41:20,650 INFO L226 Difference]: Without dead ends: 1513 [2022-12-13 11:41:20,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:41:20,651 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 162 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:41:20,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 630 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:41:20,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1513 states. [2022-12-13 11:41:20,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1513 to 1511. [2022-12-13 11:41:20,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1511 states, 1510 states have (on average 1.5304635761589405) internal successors, (2311), 1510 states have internal predecessors, (2311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:20,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1511 states to 1511 states and 2311 transitions. [2022-12-13 11:41:20,774 INFO L78 Accepts]: Start accepts. Automaton has 1511 states and 2311 transitions. Word has length 136 [2022-12-13 11:41:20,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:41:20,774 INFO L495 AbstractCegarLoop]: Abstraction has 1511 states and 2311 transitions. [2022-12-13 11:41:20,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:20,774 INFO L276 IsEmpty]: Start isEmpty. Operand 1511 states and 2311 transitions. [2022-12-13 11:41:20,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-12-13 11:41:20,777 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:41:20,777 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:41:20,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 11:41:20,777 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:41:20,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:41:20,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1215616482, now seen corresponding path program 1 times [2022-12-13 11:41:20,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:41:20,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862992478] [2022-12-13 11:41:20,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:41:20,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:41:20,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:41:20,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:41:20,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:41:20,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862992478] [2022-12-13 11:41:20,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862992478] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:41:20,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:41:20,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:41:20,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285703311] [2022-12-13 11:41:20,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:41:20,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:41:20,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:41:20,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:41:20,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:41:20,855 INFO L87 Difference]: Start difference. First operand 1511 states and 2311 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:21,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:41:21,032 INFO L93 Difference]: Finished difference Result 3922 states and 6019 transitions. [2022-12-13 11:41:21,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:41:21,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2022-12-13 11:41:21,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:41:21,042 INFO L225 Difference]: With dead ends: 3922 [2022-12-13 11:41:21,042 INFO L226 Difference]: Without dead ends: 2485 [2022-12-13 11:41:21,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:41:21,044 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 149 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:41:21,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 566 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:41:21,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2485 states. [2022-12-13 11:41:21,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2485 to 2483. [2022-12-13 11:41:21,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2483 states, 2482 states have (on average 1.5209508460918615) internal successors, (3775), 2482 states have internal predecessors, (3775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:21,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2483 states to 2483 states and 3775 transitions. [2022-12-13 11:41:21,210 INFO L78 Accepts]: Start accepts. Automaton has 2483 states and 3775 transitions. Word has length 138 [2022-12-13 11:41:21,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:41:21,210 INFO L495 AbstractCegarLoop]: Abstraction has 2483 states and 3775 transitions. [2022-12-13 11:41:21,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:21,211 INFO L276 IsEmpty]: Start isEmpty. Operand 2483 states and 3775 transitions. [2022-12-13 11:41:21,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-12-13 11:41:21,216 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:41:21,217 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:41:21,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 11:41:21,217 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:41:21,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:41:21,217 INFO L85 PathProgramCache]: Analyzing trace with hash 2020324179, now seen corresponding path program 1 times [2022-12-13 11:41:21,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:41:21,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573997554] [2022-12-13 11:41:21,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:41:21,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:41:21,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:41:21,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:41:21,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:41:21,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573997554] [2022-12-13 11:41:21,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573997554] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:41:21,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:41:21,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:41:21,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245885601] [2022-12-13 11:41:21,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:41:21,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:41:21,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:41:21,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:41:21,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:41:21,311 INFO L87 Difference]: Start difference. First operand 2483 states and 3775 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:21,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:41:21,585 INFO L93 Difference]: Finished difference Result 6388 states and 9691 transitions. [2022-12-13 11:41:21,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:41:21,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-12-13 11:41:21,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:41:21,600 INFO L225 Difference]: With dead ends: 6388 [2022-12-13 11:41:21,600 INFO L226 Difference]: Without dead ends: 3985 [2022-12-13 11:41:21,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:41:21,605 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 136 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:41:21,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 558 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:41:21,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3985 states. [2022-12-13 11:41:21,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3985 to 3983. [2022-12-13 11:41:21,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3983 states, 3982 states have (on average 1.5005022601707685) internal successors, (5975), 3982 states have internal predecessors, (5975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:21,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3983 states to 3983 states and 5975 transitions. [2022-12-13 11:41:21,889 INFO L78 Accepts]: Start accepts. Automaton has 3983 states and 5975 transitions. Word has length 140 [2022-12-13 11:41:21,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:41:21,889 INFO L495 AbstractCegarLoop]: Abstraction has 3983 states and 5975 transitions. [2022-12-13 11:41:21,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:21,889 INFO L276 IsEmpty]: Start isEmpty. Operand 3983 states and 5975 transitions. [2022-12-13 11:41:21,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-12-13 11:41:21,894 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:41:21,894 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:41:21,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 11:41:21,894 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:41:21,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:41:21,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1664881719, now seen corresponding path program 1 times [2022-12-13 11:41:21,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:41:21,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464179750] [2022-12-13 11:41:21,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:41:21,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:41:21,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:41:22,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:41:22,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:41:22,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464179750] [2022-12-13 11:41:22,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464179750] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:41:22,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:41:22,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 11:41:22,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136976613] [2022-12-13 11:41:22,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:41:22,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 11:41:22,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:41:22,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 11:41:22,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 11:41:22,093 INFO L87 Difference]: Start difference. First operand 3983 states and 5975 transitions. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:24,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:41:24,990 INFO L93 Difference]: Finished difference Result 42056 states and 62852 transitions. [2022-12-13 11:41:24,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 11:41:24,991 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2022-12-13 11:41:24,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:41:25,075 INFO L225 Difference]: With dead ends: 42056 [2022-12-13 11:41:25,076 INFO L226 Difference]: Without dead ends: 38158 [2022-12-13 11:41:25,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2022-12-13 11:41:25,091 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 2601 mSDsluCounter, 3036 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2601 SdHoareTripleChecker+Valid, 3570 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:41:25,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2601 Valid, 3570 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 11:41:25,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38158 states. [2022-12-13 11:41:26,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38158 to 7816. [2022-12-13 11:41:26,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7816 states, 7815 states have (on average 1.4866282789507357) internal successors, (11618), 7815 states have internal predecessors, (11618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:26,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7816 states to 7816 states and 11618 transitions. [2022-12-13 11:41:26,524 INFO L78 Accepts]: Start accepts. Automaton has 7816 states and 11618 transitions. Word has length 142 [2022-12-13 11:41:26,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:41:26,524 INFO L495 AbstractCegarLoop]: Abstraction has 7816 states and 11618 transitions. [2022-12-13 11:41:26,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:26,524 INFO L276 IsEmpty]: Start isEmpty. Operand 7816 states and 11618 transitions. [2022-12-13 11:41:26,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-13 11:41:26,534 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:41:26,534 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:41:26,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 11:41:26,534 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:41:26,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:41:26,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1887106134, now seen corresponding path program 1 times [2022-12-13 11:41:26,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:41:26,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765580099] [2022-12-13 11:41:26,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:41:26,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:41:26,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:41:26,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:41:26,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:41:26,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765580099] [2022-12-13 11:41:26,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765580099] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:41:26,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:41:26,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 11:41:26,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872023897] [2022-12-13 11:41:26,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:41:26,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 11:41:26,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:41:26,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 11:41:26,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-12-13 11:41:26,822 INFO L87 Difference]: Start difference. First operand 7816 states and 11618 transitions. Second operand has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:28,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:41:28,066 INFO L93 Difference]: Finished difference Result 15549 states and 23138 transitions. [2022-12-13 11:41:28,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 11:41:28,066 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2022-12-13 11:41:28,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:41:28,078 INFO L225 Difference]: With dead ends: 15549 [2022-12-13 11:41:28,078 INFO L226 Difference]: Without dead ends: 7818 [2022-12-13 11:41:28,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2022-12-13 11:41:28,085 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 924 mSDsluCounter, 948 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 1361 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:41:28,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [924 Valid, 1361 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:41:28,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7818 states. [2022-12-13 11:41:28,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7818 to 7816. [2022-12-13 11:41:28,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7816 states, 7815 states have (on average 1.470121561100448) internal successors, (11489), 7815 states have internal predecessors, (11489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:28,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7816 states to 7816 states and 11489 transitions. [2022-12-13 11:41:28,892 INFO L78 Accepts]: Start accepts. Automaton has 7816 states and 11489 transitions. Word has length 146 [2022-12-13 11:41:28,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:41:28,892 INFO L495 AbstractCegarLoop]: Abstraction has 7816 states and 11489 transitions. [2022-12-13 11:41:28,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:28,892 INFO L276 IsEmpty]: Start isEmpty. Operand 7816 states and 11489 transitions. [2022-12-13 11:41:28,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-13 11:41:28,900 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:41:28,900 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:41:28,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 11:41:28,900 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:41:28,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:41:28,901 INFO L85 PathProgramCache]: Analyzing trace with hash -104991063, now seen corresponding path program 1 times [2022-12-13 11:41:28,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:41:28,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675510716] [2022-12-13 11:41:28,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:41:28,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:41:28,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:41:28,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:41:28,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:41:28,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675510716] [2022-12-13 11:41:28,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675510716] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:41:28,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:41:28,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:41:28,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242865315] [2022-12-13 11:41:28,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:41:28,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:41:28,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:41:28,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:41:28,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:41:28,975 INFO L87 Difference]: Start difference. First operand 7816 states and 11489 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:30,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:41:30,007 INFO L93 Difference]: Finished difference Result 18303 states and 26979 transitions. [2022-12-13 11:41:30,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:41:30,008 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2022-12-13 11:41:30,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:41:30,020 INFO L225 Difference]: With dead ends: 18303 [2022-12-13 11:41:30,020 INFO L226 Difference]: Without dead ends: 10571 [2022-12-13 11:41:30,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:41:30,026 INFO L413 NwaCegarLoop]: 495 mSDtfsCounter, 220 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:41:30,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 694 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:41:30,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10571 states. [2022-12-13 11:41:31,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10571 to 10569. [2022-12-13 11:41:31,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10569 states, 10568 states have (on average 1.4627176381529146) internal successors, (15458), 10568 states have internal predecessors, (15458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:31,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10569 states to 10569 states and 15458 transitions. [2022-12-13 11:41:31,241 INFO L78 Accepts]: Start accepts. Automaton has 10569 states and 15458 transitions. Word has length 146 [2022-12-13 11:41:31,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:41:31,241 INFO L495 AbstractCegarLoop]: Abstraction has 10569 states and 15458 transitions. [2022-12-13 11:41:31,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:31,241 INFO L276 IsEmpty]: Start isEmpty. Operand 10569 states and 15458 transitions. [2022-12-13 11:41:31,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-12-13 11:41:31,251 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:41:31,251 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:41:31,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 11:41:31,251 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:41:31,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:41:31,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1280692474, now seen corresponding path program 1 times [2022-12-13 11:41:31,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:41:31,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819124257] [2022-12-13 11:41:31,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:41:31,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:41:31,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:41:31,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:41:31,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:41:31,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819124257] [2022-12-13 11:41:31,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819124257] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:41:31,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:41:31,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:41:31,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625502479] [2022-12-13 11:41:31,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:41:31,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:41:31,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:41:31,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:41:31,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:41:31,306 INFO L87 Difference]: Start difference. First operand 10569 states and 15458 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:33,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:41:33,499 INFO L93 Difference]: Finished difference Result 30402 states and 44477 transitions. [2022-12-13 11:41:33,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:41:33,500 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2022-12-13 11:41:33,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:41:33,522 INFO L225 Difference]: With dead ends: 30402 [2022-12-13 11:41:33,522 INFO L226 Difference]: Without dead ends: 20985 [2022-12-13 11:41:33,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:41:33,530 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 213 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:41:33,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 380 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 11:41:33,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20985 states. [2022-12-13 11:41:35,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20985 to 20983. [2022-12-13 11:41:35,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20983 states, 20982 states have (on average 1.456486512248594) internal successors, (30560), 20982 states have internal predecessors, (30560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:35,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20983 states to 20983 states and 30560 transitions. [2022-12-13 11:41:35,657 INFO L78 Accepts]: Start accepts. Automaton has 20983 states and 30560 transitions. Word has length 147 [2022-12-13 11:41:35,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:41:35,658 INFO L495 AbstractCegarLoop]: Abstraction has 20983 states and 30560 transitions. [2022-12-13 11:41:35,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:35,658 INFO L276 IsEmpty]: Start isEmpty. Operand 20983 states and 30560 transitions. [2022-12-13 11:41:35,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-12-13 11:41:35,677 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:41:35,677 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:41:35,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 11:41:35,677 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:41:35,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:41:35,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1511438497, now seen corresponding path program 1 times [2022-12-13 11:41:35,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:41:35,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451017255] [2022-12-13 11:41:35,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:41:35,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:41:35,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:41:35,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:41:35,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:41:35,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451017255] [2022-12-13 11:41:35,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451017255] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:41:35,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:41:35,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:41:35,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392619201] [2022-12-13 11:41:35,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:41:35,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:41:35,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:41:35,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:41:35,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:41:35,738 INFO L87 Difference]: Start difference. First operand 20983 states and 30560 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:40,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:41:40,471 INFO L93 Difference]: Finished difference Result 59958 states and 87145 transitions. [2022-12-13 11:41:40,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:41:40,472 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2022-12-13 11:41:40,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:41:40,519 INFO L225 Difference]: With dead ends: 59958 [2022-12-13 11:41:40,520 INFO L226 Difference]: Without dead ends: 41622 [2022-12-13 11:41:40,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:41:40,538 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 195 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:41:40,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 392 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 11:41:40,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41622 states. [2022-12-13 11:41:44,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41622 to 41620. [2022-12-13 11:41:44,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41620 states, 41619 states have (on average 1.4476801460871236) internal successors, (60251), 41619 states have internal predecessors, (60251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:44,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41620 states to 41620 states and 60251 transitions. [2022-12-13 11:41:44,977 INFO L78 Accepts]: Start accepts. Automaton has 41620 states and 60251 transitions. Word has length 147 [2022-12-13 11:41:44,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:41:44,977 INFO L495 AbstractCegarLoop]: Abstraction has 41620 states and 60251 transitions. [2022-12-13 11:41:44,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:41:44,977 INFO L276 IsEmpty]: Start isEmpty. Operand 41620 states and 60251 transitions. [2022-12-13 11:41:45,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-12-13 11:41:45,020 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:41:45,020 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:41:45,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 11:41:45,021 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:41:45,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:41:45,021 INFO L85 PathProgramCache]: Analyzing trace with hash 597943516, now seen corresponding path program 1 times [2022-12-13 11:41:45,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:41:45,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779677193] [2022-12-13 11:41:45,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:41:45,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:41:45,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:41:45,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:41:45,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:41:45,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779677193] [2022-12-13 11:41:45,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779677193] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:41:45,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:41:45,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 11:41:45,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890724142] [2022-12-13 11:41:45,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:41:45,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 11:41:45,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:41:45,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 11:41:45,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 11:41:45,298 INFO L87 Difference]: Start difference. First operand 41620 states and 60251 transitions. Second operand has 8 states, 8 states have (on average 18.375) internal successors, (147), 8 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:42:10,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:42:10,082 INFO L93 Difference]: Finished difference Result 256060 states and 370624 transitions. [2022-12-13 11:42:10,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 11:42:10,083 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.375) internal successors, (147), 8 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2022-12-13 11:42:10,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:42:10,525 INFO L225 Difference]: With dead ends: 256060 [2022-12-13 11:42:10,525 INFO L226 Difference]: Without dead ends: 222522 [2022-12-13 11:42:10,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-12-13 11:42:10,580 INFO L413 NwaCegarLoop]: 602 mSDtfsCounter, 2079 mSDsluCounter, 1841 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2079 SdHoareTripleChecker+Valid, 2443 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:42:10,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2079 Valid, 2443 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 11:42:10,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222522 states. [2022-12-13 11:42:21,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222522 to 77462. [2022-12-13 11:42:21,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77462 states, 77461 states have (on average 1.4403248086133666) internal successors, (111569), 77461 states have internal predecessors, (111569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:42:22,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77462 states to 77462 states and 111569 transitions. [2022-12-13 11:42:22,007 INFO L78 Accepts]: Start accepts. Automaton has 77462 states and 111569 transitions. Word has length 147 [2022-12-13 11:42:22,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:42:22,007 INFO L495 AbstractCegarLoop]: Abstraction has 77462 states and 111569 transitions. [2022-12-13 11:42:22,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.375) internal successors, (147), 8 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:42:22,008 INFO L276 IsEmpty]: Start isEmpty. Operand 77462 states and 111569 transitions. [2022-12-13 11:42:22,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-12-13 11:42:22,090 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:42:22,090 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:42:22,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 11:42:22,091 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:42:22,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:42:22,091 INFO L85 PathProgramCache]: Analyzing trace with hash -473675422, now seen corresponding path program 1 times [2022-12-13 11:42:22,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:42:22,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922035892] [2022-12-13 11:42:22,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:42:22,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:42:22,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:42:22,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:42:22,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:42:22,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922035892] [2022-12-13 11:42:22,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922035892] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:42:22,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:42:22,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 11:42:22,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855212276] [2022-12-13 11:42:22,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:42:22,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 11:42:22,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:42:22,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 11:42:22,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 11:42:22,245 INFO L87 Difference]: Start difference. First operand 77462 states and 111569 transitions. Second operand has 8 states, 8 states have (on average 18.375) internal successors, (147), 8 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:42:57,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:42:57,855 INFO L93 Difference]: Finished difference Result 291084 states and 420888 transitions. [2022-12-13 11:42:57,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 11:42:57,856 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.375) internal successors, (147), 8 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2022-12-13 11:42:57,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:42:58,256 INFO L225 Difference]: With dead ends: 291084 [2022-12-13 11:42:58,256 INFO L226 Difference]: Without dead ends: 257546 [2022-12-13 11:42:58,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-12-13 11:42:58,314 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 2500 mSDsluCounter, 1631 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2500 SdHoareTripleChecker+Valid, 2118 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:42:58,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2500 Valid, 2118 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:42:58,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257546 states. [2022-12-13 11:43:18,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257546 to 129912. [2022-12-13 11:43:18,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129912 states, 129911 states have (on average 1.436298696800117) internal successors, (186591), 129911 states have internal predecessors, (186591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:43:18,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129912 states to 129912 states and 186591 transitions. [2022-12-13 11:43:18,956 INFO L78 Accepts]: Start accepts. Automaton has 129912 states and 186591 transitions. Word has length 147 [2022-12-13 11:43:18,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:43:18,956 INFO L495 AbstractCegarLoop]: Abstraction has 129912 states and 186591 transitions. [2022-12-13 11:43:18,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.375) internal successors, (147), 8 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:43:18,957 INFO L276 IsEmpty]: Start isEmpty. Operand 129912 states and 186591 transitions. [2022-12-13 11:43:19,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-12-13 11:43:19,060 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:43:19,060 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:43:19,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 11:43:19,060 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:43:19,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:43:19,060 INFO L85 PathProgramCache]: Analyzing trace with hash -446928346, now seen corresponding path program 1 times [2022-12-13 11:43:19,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:43:19,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084038234] [2022-12-13 11:43:19,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:43:19,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:43:19,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:43:19,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:43:19,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:43:19,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084038234] [2022-12-13 11:43:19,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084038234] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:43:19,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:43:19,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 11:43:19,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126166240] [2022-12-13 11:43:19,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:43:19,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 11:43:19,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:43:19,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 11:43:19,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 11:43:19,204 INFO L87 Difference]: Start difference. First operand 129912 states and 186591 transitions. Second operand has 8 states, 8 states have (on average 18.375) internal successors, (147), 8 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:44:04,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:44:04,743 INFO L93 Difference]: Finished difference Result 325660 states and 470488 transitions. [2022-12-13 11:44:04,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 11:44:04,744 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.375) internal successors, (147), 8 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2022-12-13 11:44:04,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:44:05,202 INFO L225 Difference]: With dead ends: 325660 [2022-12-13 11:44:05,203 INFO L226 Difference]: Without dead ends: 292122 [2022-12-13 11:44:05,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-12-13 11:44:05,267 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 2331 mSDsluCounter, 1852 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2331 SdHoareTripleChecker+Valid, 2307 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:44:05,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2331 Valid, 2307 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:44:05,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292122 states. [2022-12-13 11:44:32,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292122 to 164496. [2022-12-13 11:44:32,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164496 states, 164495 states have (on average 1.4351743214079455) internal successors, (236079), 164495 states have internal predecessors, (236079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:44:32,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164496 states to 164496 states and 236079 transitions. [2022-12-13 11:44:32,751 INFO L78 Accepts]: Start accepts. Automaton has 164496 states and 236079 transitions. Word has length 147 [2022-12-13 11:44:32,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:44:32,751 INFO L495 AbstractCegarLoop]: Abstraction has 164496 states and 236079 transitions. [2022-12-13 11:44:32,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.375) internal successors, (147), 8 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:44:32,751 INFO L276 IsEmpty]: Start isEmpty. Operand 164496 states and 236079 transitions. [2022-12-13 11:44:32,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-12-13 11:44:32,895 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:44:32,895 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:44:32,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 11:44:32,895 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:44:32,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:44:32,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1972266254, now seen corresponding path program 1 times [2022-12-13 11:44:32,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:44:32,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847694092] [2022-12-13 11:44:32,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:44:32,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:44:32,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:44:33,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:44:33,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:44:33,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847694092] [2022-12-13 11:44:33,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847694092] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:44:33,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:44:33,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 11:44:33,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100725475] [2022-12-13 11:44:33,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:44:33,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 11:44:33,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:44:33,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 11:44:33,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 11:44:33,040 INFO L87 Difference]: Start difference. First operand 164496 states and 236079 transitions. Second operand has 8 states, 8 states have (on average 18.375) internal successors, (147), 8 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:45:24,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:45:24,388 INFO L93 Difference]: Finished difference Result 359612 states and 519192 transitions. [2022-12-13 11:45:24,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 11:45:24,389 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.375) internal successors, (147), 8 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2022-12-13 11:45:24,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:45:24,918 INFO L225 Difference]: With dead ends: 359612 [2022-12-13 11:45:24,918 INFO L226 Difference]: Without dead ends: 326074 [2022-12-13 11:45:24,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-12-13 11:45:24,996 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 2077 mSDsluCounter, 2138 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2077 SdHoareTripleChecker+Valid, 2609 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:45:24,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2077 Valid, 2609 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 11:45:25,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326074 states. [2022-12-13 11:45:58,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326074 to 199620. [2022-12-13 11:45:58,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199620 states, 199619 states have (on average 1.435068806075574) internal successors, (286467), 199619 states have internal predecessors, (286467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:45:58,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199620 states to 199620 states and 286467 transitions. [2022-12-13 11:45:58,719 INFO L78 Accepts]: Start accepts. Automaton has 199620 states and 286467 transitions. Word has length 147 [2022-12-13 11:45:58,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:45:58,719 INFO L495 AbstractCegarLoop]: Abstraction has 199620 states and 286467 transitions. [2022-12-13 11:45:58,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.375) internal successors, (147), 8 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:45:58,719 INFO L276 IsEmpty]: Start isEmpty. Operand 199620 states and 286467 transitions. [2022-12-13 11:45:58,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-12-13 11:45:58,877 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:45:58,877 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:45:58,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 11:45:58,877 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:45:58,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:45:58,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1932345232, now seen corresponding path program 1 times [2022-12-13 11:45:58,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:45:58,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288274486] [2022-12-13 11:45:58,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:45:58,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:45:58,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:45:59,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:45:59,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:45:59,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288274486] [2022-12-13 11:45:59,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288274486] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:45:59,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:45:59,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 11:45:59,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826032490] [2022-12-13 11:45:59,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:45:59,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 11:45:59,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:45:59,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 11:45:59,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 11:45:59,036 INFO L87 Difference]: Start difference. First operand 199620 states and 286467 transitions. Second operand has 8 states, 8 states have (on average 18.375) internal successors, (147), 8 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:47:03,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:47:03,736 INFO L93 Difference]: Finished difference Result 394932 states and 569908 transitions. [2022-12-13 11:47:03,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 11:47:03,737 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.375) internal successors, (147), 8 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2022-12-13 11:47:03,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:47:04,309 INFO L225 Difference]: With dead ends: 394932 [2022-12-13 11:47:04,309 INFO L226 Difference]: Without dead ends: 361394 [2022-12-13 11:47:04,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-12-13 11:47:04,469 INFO L413 NwaCegarLoop]: 495 mSDtfsCounter, 2183 mSDsluCounter, 2327 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2183 SdHoareTripleChecker+Valid, 2822 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:47:04,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2183 Valid, 2822 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 11:47:04,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361394 states. [2022-12-13 11:47:48,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361394 to 235126. [2022-12-13 11:47:48,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235126 states, 235125 states have (on average 1.4352918660287082) internal successors, (337473), 235125 states have internal predecessors, (337473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:47:49,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235126 states to 235126 states and 337473 transitions. [2022-12-13 11:47:49,306 INFO L78 Accepts]: Start accepts. Automaton has 235126 states and 337473 transitions. Word has length 147 [2022-12-13 11:47:49,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:47:49,306 INFO L495 AbstractCegarLoop]: Abstraction has 235126 states and 337473 transitions. [2022-12-13 11:47:49,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.375) internal successors, (147), 8 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:47:49,306 INFO L276 IsEmpty]: Start isEmpty. Operand 235126 states and 337473 transitions. [2022-12-13 11:47:49,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-12-13 11:47:49,486 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:47:49,486 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:47:49,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 11:47:49,486 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:47:49,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:47:49,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1832603772, now seen corresponding path program 1 times [2022-12-13 11:47:49,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:47:49,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958813198] [2022-12-13 11:47:49,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:47:49,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:47:49,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:47:49,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:47:49,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:47:49,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958813198] [2022-12-13 11:47:49,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958813198] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:47:49,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:47:49,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 11:47:49,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501472967] [2022-12-13 11:47:49,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:47:49,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 11:47:49,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:47:49,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 11:47:49,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 11:47:49,632 INFO L87 Difference]: Start difference. First operand 235126 states and 337473 transitions. Second operand has 8 states, 8 states have (on average 18.375) internal successors, (147), 8 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:49:08,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:49:08,681 INFO L93 Difference]: Finished difference Result 408482 states and 589290 transitions. [2022-12-13 11:49:08,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 11:49:08,682 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.375) internal successors, (147), 8 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2022-12-13 11:49:08,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:49:09,297 INFO L225 Difference]: With dead ends: 408482 [2022-12-13 11:49:09,297 INFO L226 Difference]: Without dead ends: 385952 [2022-12-13 11:49:09,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-12-13 11:49:09,386 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 2191 mSDsluCounter, 2181 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2191 SdHoareTripleChecker+Valid, 2687 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:49:09,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2191 Valid, 2687 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 11:49:09,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385952 states. [2022-12-13 11:50:03,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385952 to 259684. [2022-12-13 11:50:03,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259684 states, 259683 states have (on average 1.4358082739339888) internal successors, (372855), 259683 states have internal predecessors, (372855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:50:04,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259684 states to 259684 states and 372855 transitions. [2022-12-13 11:50:04,282 INFO L78 Accepts]: Start accepts. Automaton has 259684 states and 372855 transitions. Word has length 147 [2022-12-13 11:50:04,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:50:04,282 INFO L495 AbstractCegarLoop]: Abstraction has 259684 states and 372855 transitions. [2022-12-13 11:50:04,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.375) internal successors, (147), 8 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:50:04,282 INFO L276 IsEmpty]: Start isEmpty. Operand 259684 states and 372855 transitions. [2022-12-13 11:50:04,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-12-13 11:50:04,494 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:50:04,494 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:50:04,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 11:50:04,495 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:50:04,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:50:04,495 INFO L85 PathProgramCache]: Analyzing trace with hash -118618252, now seen corresponding path program 1 times [2022-12-13 11:50:04,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:50:04,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870323285] [2022-12-13 11:50:04,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:50:04,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:50:04,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:50:04,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:50:04,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:50:04,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870323285] [2022-12-13 11:50:04,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870323285] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:50:04,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:50:04,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 11:50:04,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049373155] [2022-12-13 11:50:04,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:50:04,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:50:04,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:50:04,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:50:04,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:50:04,722 INFO L87 Difference]: Start difference. First operand 259684 states and 372855 transitions. Second operand has 5 states, 5 states have (on average 29.8) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:51:01,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:51:01,620 INFO L93 Difference]: Finished difference Result 519290 states and 745620 transitions. [2022-12-13 11:51:01,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 11:51:01,621 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2022-12-13 11:51:01,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:51:02,047 INFO L225 Difference]: With dead ends: 519290 [2022-12-13 11:51:02,048 INFO L226 Difference]: Without dead ends: 259684 [2022-12-13 11:51:02,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 11:51:02,269 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 838 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 838 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:51:02,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [838 Valid, 198 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:51:02,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259684 states. [2022-12-13 11:51:59,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259684 to 259684. [2022-12-13 11:52:00,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259684 states, 259683 states have (on average 1.4248333545130023) internal successors, (370005), 259683 states have internal predecessors, (370005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:52:00,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259684 states to 259684 states and 370005 transitions. [2022-12-13 11:52:00,715 INFO L78 Accepts]: Start accepts. Automaton has 259684 states and 370005 transitions. Word has length 149 [2022-12-13 11:52:00,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:52:00,715 INFO L495 AbstractCegarLoop]: Abstraction has 259684 states and 370005 transitions. [2022-12-13 11:52:00,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:52:00,715 INFO L276 IsEmpty]: Start isEmpty. Operand 259684 states and 370005 transitions. [2022-12-13 11:52:00,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-12-13 11:52:00,930 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:52:00,930 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:52:00,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 11:52:00,930 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:52:00,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:52:00,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1730275092, now seen corresponding path program 1 times [2022-12-13 11:52:00,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:52:00,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027750181] [2022-12-13 11:52:00,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:52:00,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:52:00,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:52:01,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:52:01,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:52:01,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027750181] [2022-12-13 11:52:01,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027750181] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:52:01,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:52:01,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 11:52:01,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539851334] [2022-12-13 11:52:01,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:52:01,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:52:01,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:52:01,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:52:01,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:52:01,008 INFO L87 Difference]: Start difference. First operand 259684 states and 370005 transitions. Second operand has 5 states, 5 states have (on average 29.8) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:52:31,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:52:31,933 INFO L93 Difference]: Finished difference Result 384146 states and 548890 transitions. [2022-12-13 11:52:31,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 11:52:31,934 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2022-12-13 11:52:31,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:52:32,117 INFO L225 Difference]: With dead ends: 384146 [2022-12-13 11:52:32,117 INFO L226 Difference]: Without dead ends: 130561 [2022-12-13 11:52:32,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 11:52:32,244 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 855 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 855 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 11:52:32,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [855 Valid, 182 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 11:52:32,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130561 states. [2022-12-13 11:53:01,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130561 to 130561. [2022-12-13 11:53:01,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130561 states, 130560 states have (on average 1.4225030637254903) internal successors, (185722), 130560 states have internal predecessors, (185722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:53:01,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130561 states to 130561 states and 185722 transitions. [2022-12-13 11:53:01,892 INFO L78 Accepts]: Start accepts. Automaton has 130561 states and 185722 transitions. Word has length 149 [2022-12-13 11:53:01,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:53:01,892 INFO L495 AbstractCegarLoop]: Abstraction has 130561 states and 185722 transitions. [2022-12-13 11:53:01,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:53:01,892 INFO L276 IsEmpty]: Start isEmpty. Operand 130561 states and 185722 transitions. [2022-12-13 11:53:01,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-12-13 11:53:01,991 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:53:01,991 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:53:01,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 11:53:01,991 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:53:01,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:53:01,992 INFO L85 PathProgramCache]: Analyzing trace with hash -60957986, now seen corresponding path program 1 times [2022-12-13 11:53:01,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:53:01,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742736897] [2022-12-13 11:53:01,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:53:01,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:53:02,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:53:02,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:53:02,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:53:02,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742736897] [2022-12-13 11:53:02,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742736897] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:53:02,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:53:02,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 11:53:02,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458978766] [2022-12-13 11:53:02,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:53:02,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:53:02,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:53:02,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:53:02,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:53:02,132 INFO L87 Difference]: Start difference. First operand 130561 states and 185722 transitions. Second operand has 5 states, 5 states have (on average 29.8) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 11:53:33,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:53:33,115 INFO L93 Difference]: Finished difference Result 261038 states and 371348 transitions. [2022-12-13 11:53:33,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 11:53:33,116 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2022-12-13 11:53:33,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:53:33,291 INFO L225 Difference]: With dead ends: 261038 [2022-12-13 11:53:33,291 INFO L226 Difference]: Without dead ends: 130561 [2022-12-13 11:53:33,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 11:53:33,367 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 794 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:53:33,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 214 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:53:33,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130561 states.