./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844be7fa-621e-49f2-8c0e-90d7e31bc257/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844be7fa-621e-49f2-8c0e-90d7e31bc257/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844be7fa-621e-49f2-8c0e-90d7e31bc257/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844be7fa-621e-49f2-8c0e-90d7e31bc257/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844be7fa-621e-49f2-8c0e-90d7e31bc257/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844be7fa-621e-49f2-8c0e-90d7e31bc257/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7669776db00f6295c4028d825bdd51b22a88fb95e78feea7b33da1a0ac83f7c3 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:03:18,485 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:03:18,488 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:03:18,532 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:03:18,532 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:03:18,536 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:03:18,539 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:03:18,543 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:03:18,546 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:03:18,549 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:03:18,552 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:03:18,554 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:03:18,555 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:03:18,560 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:03:18,562 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:03:18,564 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:03:18,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:03:18,567 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:03:18,569 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:03:18,576 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:03:18,578 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:03:18,581 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:03:18,583 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:03:18,584 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:03:18,595 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:03:18,596 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:03:18,597 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:03:18,598 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:03:18,600 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:03:18,601 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:03:18,602 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:03:18,603 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:03:18,605 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:03:18,606 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:03:18,609 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:03:18,609 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:03:18,610 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:03:18,611 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:03:18,611 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:03:18,615 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:03:18,617 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:03:18,618 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844be7fa-621e-49f2-8c0e-90d7e31bc257/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:03:18,663 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:03:18,663 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:03:18,664 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:03:18,664 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:03:18,665 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:03:18,665 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:03:18,666 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:03:18,667 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:03:18,667 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:03:18,667 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:03:18,668 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:03:18,669 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:03:18,669 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:03:18,669 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:03:18,669 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:03:18,670 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:03:18,670 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:03:18,670 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:03:18,670 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:03:18,671 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:03:18,671 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:03:18,671 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:03:18,671 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:03:18,672 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:03:18,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:03:18,672 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:03:18,672 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:03:18,673 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:03:18,673 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:03:18,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:03:18,674 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:03:18,674 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:03:18,675 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:03:18,675 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844be7fa-621e-49f2-8c0e-90d7e31bc257/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844be7fa-621e-49f2-8c0e-90d7e31bc257/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7669776db00f6295c4028d825bdd51b22a88fb95e78feea7b33da1a0ac83f7c3 [2022-11-20 11:03:18,962 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:03:18,996 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:03:18,999 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:03:19,000 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:03:19,000 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:03:19,002 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844be7fa-621e-49f2-8c0e-90d7e31bc257/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c [2022-11-20 11:03:22,054 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:03:22,404 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:03:22,404 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844be7fa-621e-49f2-8c0e-90d7e31bc257/sv-benchmarks/c/seq-mthreaded/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c [2022-11-20 11:03:22,434 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844be7fa-621e-49f2-8c0e-90d7e31bc257/bin/uautomizer-ug76WZFUDN/data/fd63001f4/425fd83b795043e08431c6e2d1d82f6d/FLAG2cc6a5f75 [2022-11-20 11:03:22,448 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844be7fa-621e-49f2-8c0e-90d7e31bc257/bin/uautomizer-ug76WZFUDN/data/fd63001f4/425fd83b795043e08431c6e2d1d82f6d [2022-11-20 11:03:22,451 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:03:22,453 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:03:22,455 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:03:22,455 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:03:22,461 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:03:22,462 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:03:22" (1/1) ... [2022-11-20 11:03:22,463 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ec47b63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:03:22, skipping insertion in model container [2022-11-20 11:03:22,463 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:03:22" (1/1) ... [2022-11-20 11:03:22,471 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:03:22,531 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:03:22,850 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_844be7fa-621e-49f2-8c0e-90d7e31bc257/sv-benchmarks/c/seq-mthreaded/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c[28368,28381] [2022-11-20 11:03:22,854 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:03:22,866 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:03:22,966 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_844be7fa-621e-49f2-8c0e-90d7e31bc257/sv-benchmarks/c/seq-mthreaded/pals_floodmax.4.3.ufo.UNBOUNDED.pals.c[28368,28381] [2022-11-20 11:03:22,967 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:03:22,996 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:03:22,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:03:22 WrapperNode [2022-11-20 11:03:22,996 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:03:22,997 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:03:22,998 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:03:22,998 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:03:23,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:03:22" (1/1) ... [2022-11-20 11:03:23,039 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:03:22" (1/1) ... [2022-11-20 11:03:23,107 INFO L138 Inliner]: procedures = 24, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 904 [2022-11-20 11:03:23,108 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:03:23,109 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:03:23,109 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:03:23,109 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:03:23,119 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:03:22" (1/1) ... [2022-11-20 11:03:23,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:03:22" (1/1) ... [2022-11-20 11:03:23,124 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:03:22" (1/1) ... [2022-11-20 11:03:23,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:03:22" (1/1) ... [2022-11-20 11:03:23,140 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:03:22" (1/1) ... [2022-11-20 11:03:23,151 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:03:22" (1/1) ... [2022-11-20 11:03:23,156 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:03:22" (1/1) ... [2022-11-20 11:03:23,160 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:03:22" (1/1) ... [2022-11-20 11:03:23,168 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:03:23,169 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:03:23,169 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:03:23,169 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:03:23,170 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:03:22" (1/1) ... [2022-11-20 11:03:23,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:03:23,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844be7fa-621e-49f2-8c0e-90d7e31bc257/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:03:23,202 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844be7fa-621e-49f2-8c0e-90d7e31bc257/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:03:23,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:03:23,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:03:23,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:03:23,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:03:23,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_844be7fa-621e-49f2-8c0e-90d7e31bc257/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:03:23,445 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:03:23,447 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:03:24,800 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:03:24,815 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:03:24,815 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 11:03:24,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:03:24 BoogieIcfgContainer [2022-11-20 11:03:24,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:03:24,820 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:03:24,820 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:03:24,829 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:03:24,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:03:22" (1/3) ... [2022-11-20 11:03:24,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73b60135 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:03:24, skipping insertion in model container [2022-11-20 11:03:24,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:03:22" (2/3) ... [2022-11-20 11:03:24,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73b60135 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:03:24, skipping insertion in model container [2022-11-20 11:03:24,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:03:24" (3/3) ... [2022-11-20 11:03:24,832 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.3.ufo.UNBOUNDED.pals.c [2022-11-20 11:03:24,852 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:03:24,852 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:03:24,943 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:03:24,951 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;@600859c0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:03:24,951 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 11:03:24,960 INFO L276 IsEmpty]: Start isEmpty. Operand has 288 states, 286 states have (on average 1.8251748251748252) internal successors, (522), 287 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:24,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-20 11:03:24,989 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:03:24,990 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:03:24,990 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:03:24,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:24,996 INFO L85 PathProgramCache]: Analyzing trace with hash 2117571860, now seen corresponding path program 1 times [2022-11-20 11:03:25,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:25,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126095234] [2022-11-20 11:03:25,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:25,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:25,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:25,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:25,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:25,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126095234] [2022-11-20 11:03:25,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126095234] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:25,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:03:25,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:03:25,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911062632] [2022-11-20 11:03:25,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:25,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 11:03:25,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:25,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 11:03:25,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:03:25,596 INFO L87 Difference]: Start difference. First operand has 288 states, 286 states have (on average 1.8251748251748252) internal successors, (522), 287 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:25,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:03:25,671 INFO L93 Difference]: Finished difference Result 381 states and 687 transitions. [2022-11-20 11:03:25,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 11:03:25,674 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-20 11:03:25,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:03:25,688 INFO L225 Difference]: With dead ends: 381 [2022-11-20 11:03:25,689 INFO L226 Difference]: Without dead ends: 284 [2022-11-20 11:03:25,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:03:25,697 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:03:25,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:03:25,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-11-20 11:03:25,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2022-11-20 11:03:25,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 1.8197879858657244) internal successors, (515), 283 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:25,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 515 transitions. [2022-11-20 11:03:25,790 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 515 transitions. Word has length 77 [2022-11-20 11:03:25,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:03:25,791 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 515 transitions. [2022-11-20 11:03:25,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:25,791 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 515 transitions. [2022-11-20 11:03:25,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-20 11:03:25,795 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:03:25,795 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:03:25,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:03:25,796 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:03:25,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:25,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1983558354, now seen corresponding path program 1 times [2022-11-20 11:03:25,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:25,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789262104] [2022-11-20 11:03:25,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:25,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:25,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:26,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:26,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:26,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789262104] [2022-11-20 11:03:26,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789262104] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:26,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:03:26,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:03:26,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497964267] [2022-11-20 11:03:26,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:26,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:03:26,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:26,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:03:26,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:03:26,209 INFO L87 Difference]: Start difference. First operand 284 states and 515 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:26,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:03:26,374 INFO L93 Difference]: Finished difference Result 380 states and 680 transitions. [2022-11-20 11:03:26,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:03:26,375 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-20 11:03:26,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:03:26,379 INFO L225 Difference]: With dead ends: 380 [2022-11-20 11:03:26,380 INFO L226 Difference]: Without dead ends: 284 [2022-11-20 11:03:26,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:03:26,389 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 3 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2007 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:03:26,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2007 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:03:26,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-11-20 11:03:26,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2022-11-20 11:03:26,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 1.6713780918727916) internal successors, (473), 283 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:26,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 473 transitions. [2022-11-20 11:03:26,413 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 473 transitions. Word has length 77 [2022-11-20 11:03:26,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:03:26,413 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 473 transitions. [2022-11-20 11:03:26,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:26,414 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 473 transitions. [2022-11-20 11:03:26,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-20 11:03:26,420 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:03:26,420 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] [2022-11-20 11:03:26,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:03:26,421 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:03:26,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:26,421 INFO L85 PathProgramCache]: Analyzing trace with hash 188392410, now seen corresponding path program 1 times [2022-11-20 11:03:26,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:26,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184164215] [2022-11-20 11:03:26,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:26,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:26,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:26,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:26,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:26,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184164215] [2022-11-20 11:03:26,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184164215] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:26,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:03:26,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:03:26,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705548178] [2022-11-20 11:03:26,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:26,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:03:26,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:26,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:03:26,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:03:26,720 INFO L87 Difference]: Start difference. First operand 284 states and 473 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:26,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:03:26,795 INFO L93 Difference]: Finished difference Result 457 states and 774 transitions. [2022-11-20 11:03:26,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:03:26,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 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 118 [2022-11-20 11:03:26,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:03:26,799 INFO L225 Difference]: With dead ends: 457 [2022-11-20 11:03:26,800 INFO L226 Difference]: Without dead ends: 365 [2022-11-20 11:03:26,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:03:26,812 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 131 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:03:26,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 887 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:03:26,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2022-11-20 11:03:26,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 362. [2022-11-20 11:03:26,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 361 states have (on average 1.6759002770083102) internal successors, (605), 361 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:26,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 605 transitions. [2022-11-20 11:03:26,853 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 605 transitions. Word has length 118 [2022-11-20 11:03:26,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:03:26,856 INFO L495 AbstractCegarLoop]: Abstraction has 362 states and 605 transitions. [2022-11-20 11:03:26,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:26,856 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 605 transitions. [2022-11-20 11:03:26,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-20 11:03:26,864 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:03:26,865 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] [2022-11-20 11:03:26,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:03:26,865 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:03:26,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:26,866 INFO L85 PathProgramCache]: Analyzing trace with hash -2086049744, now seen corresponding path program 1 times [2022-11-20 11:03:26,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:26,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269433278] [2022-11-20 11:03:26,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:26,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:26,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:27,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:27,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:27,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269433278] [2022-11-20 11:03:27,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269433278] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:27,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:03:27,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:03:27,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7446608] [2022-11-20 11:03:27,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:27,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:03:27,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:27,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:03:27,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:03:27,086 INFO L87 Difference]: Start difference. First operand 362 states and 605 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:27,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:03:27,137 INFO L93 Difference]: Finished difference Result 684 states and 1157 transitions. [2022-11-20 11:03:27,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:03:27,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 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 121 [2022-11-20 11:03:27,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:03:27,143 INFO L225 Difference]: With dead ends: 684 [2022-11-20 11:03:27,144 INFO L226 Difference]: Without dead ends: 514 [2022-11-20 11:03:27,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:03:27,155 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 132 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:03:27,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 899 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:03:27,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2022-11-20 11:03:27,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 510. [2022-11-20 11:03:27,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 509 states have (on average 1.6836935166994107) internal successors, (857), 509 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:27,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 857 transitions. [2022-11-20 11:03:27,198 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 857 transitions. Word has length 121 [2022-11-20 11:03:27,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:03:27,200 INFO L495 AbstractCegarLoop]: Abstraction has 510 states and 857 transitions. [2022-11-20 11:03:27,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:27,200 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 857 transitions. [2022-11-20 11:03:27,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-20 11:03:27,203 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:03:27,203 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] [2022-11-20 11:03:27,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:03:27,204 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:03:27,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:27,205 INFO L85 PathProgramCache]: Analyzing trace with hash -623070795, now seen corresponding path program 1 times [2022-11-20 11:03:27,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:27,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144325138] [2022-11-20 11:03:27,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:27,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:27,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:27,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:27,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:27,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144325138] [2022-11-20 11:03:27,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144325138] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:27,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:03:27,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:03:27,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347053825] [2022-11-20 11:03:27,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:27,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:03:27,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:27,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:03:27,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:03:27,458 INFO L87 Difference]: Start difference. First operand 510 states and 857 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:27,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:03:27,516 INFO L93 Difference]: Finished difference Result 1110 states and 1879 transitions. [2022-11-20 11:03:27,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:03:27,517 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 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 124 [2022-11-20 11:03:27,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:03:27,520 INFO L225 Difference]: With dead ends: 1110 [2022-11-20 11:03:27,521 INFO L226 Difference]: Without dead ends: 792 [2022-11-20 11:03:27,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:03:27,522 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 125 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:03:27,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 900 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:03:27,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2022-11-20 11:03:27,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 786. [2022-11-20 11:03:27,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 786 states, 785 states have (on average 1.6828025477707007) internal successors, (1321), 785 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:27,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 1321 transitions. [2022-11-20 11:03:27,560 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 1321 transitions. Word has length 124 [2022-11-20 11:03:27,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:03:27,562 INFO L495 AbstractCegarLoop]: Abstraction has 786 states and 1321 transitions. [2022-11-20 11:03:27,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:27,566 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 1321 transitions. [2022-11-20 11:03:27,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-20 11:03:27,568 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:03:27,569 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] [2022-11-20 11:03:27,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:03:27,569 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:03:27,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:27,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1603254571, now seen corresponding path program 1 times [2022-11-20 11:03:27,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:27,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147126636] [2022-11-20 11:03:27,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:27,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:27,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:27,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:27,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:27,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147126636] [2022-11-20 11:03:27,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147126636] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:27,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:03:27,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:03:27,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523146476] [2022-11-20 11:03:27,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:27,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:03:27,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:27,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:03:27,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:03:27,769 INFO L87 Difference]: Start difference. First operand 786 states and 1321 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:27,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:03:27,837 INFO L93 Difference]: Finished difference Result 1902 states and 3203 transitions. [2022-11-20 11:03:27,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:03:27,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 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 127 [2022-11-20 11:03:27,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:03:27,843 INFO L225 Difference]: With dead ends: 1902 [2022-11-20 11:03:27,843 INFO L226 Difference]: Without dead ends: 1308 [2022-11-20 11:03:27,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:03:27,845 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 118 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:03:27,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 901 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:03:27,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1308 states. [2022-11-20 11:03:27,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1308 to 1298. [2022-11-20 11:03:27,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1298 states, 1297 states have (on average 1.6723207401696223) internal successors, (2169), 1297 states have internal predecessors, (2169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:27,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1298 states to 1298 states and 2169 transitions. [2022-11-20 11:03:27,899 INFO L78 Accepts]: Start accepts. Automaton has 1298 states and 2169 transitions. Word has length 127 [2022-11-20 11:03:27,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:03:27,900 INFO L495 AbstractCegarLoop]: Abstraction has 1298 states and 2169 transitions. [2022-11-20 11:03:27,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:27,900 INFO L276 IsEmpty]: Start isEmpty. Operand 1298 states and 2169 transitions. [2022-11-20 11:03:27,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-20 11:03:27,902 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:03:27,902 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] [2022-11-20 11:03:27,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:03:27,903 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:03:27,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:27,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1273370830, now seen corresponding path program 1 times [2022-11-20 11:03:27,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:27,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087159404] [2022-11-20 11:03:27,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:27,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:27,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:28,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:28,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:28,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087159404] [2022-11-20 11:03:28,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087159404] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:28,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:03:28,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:03:28,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42955813] [2022-11-20 11:03:28,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:28,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:03:28,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:28,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:03:28,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:03:28,169 INFO L87 Difference]: Start difference. First operand 1298 states and 2169 transitions. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 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) [2022-11-20 11:03:28,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:03:28,773 INFO L93 Difference]: Finished difference Result 6530 states and 11093 transitions. [2022-11-20 11:03:28,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:03:28,774 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 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 [2022-11-20 11:03:28,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:03:28,796 INFO L225 Difference]: With dead ends: 6530 [2022-11-20 11:03:28,796 INFO L226 Difference]: Without dead ends: 5424 [2022-11-20 11:03:28,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:03:28,800 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 1589 mSDsluCounter, 3043 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1589 SdHoareTripleChecker+Valid, 3516 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:03:28,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1589 Valid, 3516 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:03:28,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5424 states. [2022-11-20 11:03:28,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5424 to 2326. [2022-11-20 11:03:28,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2326 states, 2325 states have (on average 1.6748387096774193) internal successors, (3894), 2325 states have internal predecessors, (3894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:28,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2326 states to 2326 states and 3894 transitions. [2022-11-20 11:03:28,978 INFO L78 Accepts]: Start accepts. Automaton has 2326 states and 3894 transitions. Word has length 130 [2022-11-20 11:03:28,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:03:28,979 INFO L495 AbstractCegarLoop]: Abstraction has 2326 states and 3894 transitions. [2022-11-20 11:03:28,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 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) [2022-11-20 11:03:28,979 INFO L276 IsEmpty]: Start isEmpty. Operand 2326 states and 3894 transitions. [2022-11-20 11:03:28,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-20 11:03:28,982 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:03:28,983 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] [2022-11-20 11:03:28,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:03:28,983 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:03:28,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:28,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1274816655, now seen corresponding path program 1 times [2022-11-20 11:03:28,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:28,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607145313] [2022-11-20 11:03:28,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:28,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:29,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:29,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:29,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:29,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607145313] [2022-11-20 11:03:29,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607145313] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:29,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:03:29,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:03:29,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434394682] [2022-11-20 11:03:29,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:29,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:03:29,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:29,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:03:29,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:03:29,200 INFO L87 Difference]: Start difference. First operand 2326 states and 3894 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:29,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:03:29,556 INFO L93 Difference]: Finished difference Result 6744 states and 11406 transitions. [2022-11-20 11:03:29,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:03:29,557 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 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 131 [2022-11-20 11:03:29,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:03:29,573 INFO L225 Difference]: With dead ends: 6744 [2022-11-20 11:03:29,573 INFO L226 Difference]: Without dead ends: 4610 [2022-11-20 11:03:29,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:03:29,580 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 457 mSDsluCounter, 931 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 1404 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:03:29,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 1404 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:03:29,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4610 states. [2022-11-20 11:03:29,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4610 to 3451. [2022-11-20 11:03:29,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3451 states, 3450 states have (on average 1.6805797101449276) internal successors, (5798), 3450 states have internal predecessors, (5798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:29,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3451 states to 3451 states and 5798 transitions. [2022-11-20 11:03:29,892 INFO L78 Accepts]: Start accepts. Automaton has 3451 states and 5798 transitions. Word has length 131 [2022-11-20 11:03:29,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:03:29,892 INFO L495 AbstractCegarLoop]: Abstraction has 3451 states and 5798 transitions. [2022-11-20 11:03:29,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:29,893 INFO L276 IsEmpty]: Start isEmpty. Operand 3451 states and 5798 transitions. [2022-11-20 11:03:29,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-20 11:03:29,896 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:03:29,897 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] [2022-11-20 11:03:29,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:03:29,897 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:03:29,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:29,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1504754277, now seen corresponding path program 1 times [2022-11-20 11:03:29,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:29,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784912049] [2022-11-20 11:03:29,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:29,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:29,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:30,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:30,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:30,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784912049] [2022-11-20 11:03:30,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784912049] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:30,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:03:30,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:03:30,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997480394] [2022-11-20 11:03:30,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:30,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:03:30,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:30,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:03:30,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:03:30,094 INFO L87 Difference]: Start difference. First operand 3451 states and 5798 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 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) [2022-11-20 11:03:30,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:03:30,577 INFO L93 Difference]: Finished difference Result 10068 states and 17008 transitions. [2022-11-20 11:03:30,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:03:30,578 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 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 [2022-11-20 11:03:30,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:03:30,604 INFO L225 Difference]: With dead ends: 10068 [2022-11-20 11:03:30,604 INFO L226 Difference]: Without dead ends: 6809 [2022-11-20 11:03:30,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:03:30,611 INFO L413 NwaCegarLoop]: 461 mSDtfsCounter, 457 mSDsluCounter, 963 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 1424 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:03:30,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 1424 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:03:30,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6809 states. [2022-11-20 11:03:30,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6809 to 5106. [2022-11-20 11:03:30,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5106 states, 5105 states have (on average 1.6789422135161607) internal successors, (8571), 5105 states have internal predecessors, (8571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:31,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5106 states to 5106 states and 8571 transitions. [2022-11-20 11:03:31,006 INFO L78 Accepts]: Start accepts. Automaton has 5106 states and 8571 transitions. Word has length 132 [2022-11-20 11:03:31,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:03:31,007 INFO L495 AbstractCegarLoop]: Abstraction has 5106 states and 8571 transitions. [2022-11-20 11:03:31,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 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) [2022-11-20 11:03:31,007 INFO L276 IsEmpty]: Start isEmpty. Operand 5106 states and 8571 transitions. [2022-11-20 11:03:31,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-20 11:03:31,011 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:03:31,012 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] [2022-11-20 11:03:31,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:03:31,012 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:03:31,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:31,013 INFO L85 PathProgramCache]: Analyzing trace with hash -557803383, now seen corresponding path program 1 times [2022-11-20 11:03:31,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:31,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537871497] [2022-11-20 11:03:31,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:31,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:31,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:31,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:31,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:31,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537871497] [2022-11-20 11:03:31,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537871497] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:31,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:03:31,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:03:31,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143077254] [2022-11-20 11:03:31,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:31,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:03:31,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:31,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:03:31,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:03:31,131 INFO L87 Difference]: Start difference. First operand 5106 states and 8571 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:31,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:03:31,687 INFO L93 Difference]: Finished difference Result 11425 states and 19299 transitions. [2022-11-20 11:03:31,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:03:31,688 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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 133 [2022-11-20 11:03:31,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:03:31,730 INFO L225 Difference]: With dead ends: 11425 [2022-11-20 11:03:31,730 INFO L226 Difference]: Without dead ends: 7909 [2022-11-20 11:03:31,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:03:31,736 INFO L413 NwaCegarLoop]: 592 mSDtfsCounter, 138 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:03:31,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 1043 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:03:31,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7909 states. [2022-11-20 11:03:32,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7909 to 7907. [2022-11-20 11:03:32,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7907 states, 7906 states have (on average 1.6750569187958513) internal successors, (13243), 7906 states have internal predecessors, (13243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:32,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7907 states to 7907 states and 13243 transitions. [2022-11-20 11:03:32,315 INFO L78 Accepts]: Start accepts. Automaton has 7907 states and 13243 transitions. Word has length 133 [2022-11-20 11:03:32,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:03:32,316 INFO L495 AbstractCegarLoop]: Abstraction has 7907 states and 13243 transitions. [2022-11-20 11:03:32,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:32,317 INFO L276 IsEmpty]: Start isEmpty. Operand 7907 states and 13243 transitions. [2022-11-20 11:03:32,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-20 11:03:32,319 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:03:32,319 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] [2022-11-20 11:03:32,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 11:03:32,320 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:03:32,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:32,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1941111592, now seen corresponding path program 1 times [2022-11-20 11:03:32,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:32,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315769052] [2022-11-20 11:03:32,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:32,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:32,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:32,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:32,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:32,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315769052] [2022-11-20 11:03:32,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315769052] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:32,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:03:32,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:03:32,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686480809] [2022-11-20 11:03:32,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:32,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:03:32,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:32,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:03:32,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:03:32,537 INFO L87 Difference]: Start difference. First operand 7907 states and 13243 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:33,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:03:33,536 INFO L93 Difference]: Finished difference Result 23494 states and 39550 transitions. [2022-11-20 11:03:33,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:03:33,537 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 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 133 [2022-11-20 11:03:33,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:03:33,578 INFO L225 Difference]: With dead ends: 23494 [2022-11-20 11:03:33,578 INFO L226 Difference]: Without dead ends: 15781 [2022-11-20 11:03:33,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:03:33,588 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 455 mSDsluCounter, 1041 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 1518 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:03:33,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 1518 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:03:33,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15781 states. [2022-11-20 11:03:34,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15781 to 11788. [2022-11-20 11:03:34,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11788 states, 11787 states have (on average 1.6726054127428522) internal successors, (19715), 11787 states have internal predecessors, (19715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:34,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11788 states to 11788 states and 19715 transitions. [2022-11-20 11:03:34,528 INFO L78 Accepts]: Start accepts. Automaton has 11788 states and 19715 transitions. Word has length 133 [2022-11-20 11:03:34,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:03:34,529 INFO L495 AbstractCegarLoop]: Abstraction has 11788 states and 19715 transitions. [2022-11-20 11:03:34,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:34,529 INFO L276 IsEmpty]: Start isEmpty. Operand 11788 states and 19715 transitions. [2022-11-20 11:03:34,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-20 11:03:34,532 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:03:34,532 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] [2022-11-20 11:03:34,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 11:03:34,533 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:03:34,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:34,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1631061960, now seen corresponding path program 1 times [2022-11-20 11:03:34,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:34,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980044901] [2022-11-20 11:03:34,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:34,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:34,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:34,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:34,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:34,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980044901] [2022-11-20 11:03:34,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980044901] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:34,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:03:34,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:03:34,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310259326] [2022-11-20 11:03:34,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:34,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:03:34,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:34,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:03:34,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:03:34,647 INFO L87 Difference]: Start difference. First operand 11788 states and 19715 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:35,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:03:35,650 INFO L93 Difference]: Finished difference Result 23685 states and 39649 transitions. [2022-11-20 11:03:35,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:03:35,650 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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 133 [2022-11-20 11:03:35,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:03:35,693 INFO L225 Difference]: With dead ends: 23685 [2022-11-20 11:03:35,693 INFO L226 Difference]: Without dead ends: 17075 [2022-11-20 11:03:35,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:03:35,705 INFO L413 NwaCegarLoop]: 531 mSDtfsCounter, 117 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:03:35,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 985 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:03:35,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17075 states. [2022-11-20 11:03:37,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17075 to 17073. [2022-11-20 11:03:37,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17073 states, 17072 states have (on average 1.6617268041237114) internal successors, (28369), 17072 states have internal predecessors, (28369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:37,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17073 states to 17073 states and 28369 transitions. [2022-11-20 11:03:37,131 INFO L78 Accepts]: Start accepts. Automaton has 17073 states and 28369 transitions. Word has length 133 [2022-11-20 11:03:37,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:03:37,132 INFO L495 AbstractCegarLoop]: Abstraction has 17073 states and 28369 transitions. [2022-11-20 11:03:37,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:37,132 INFO L276 IsEmpty]: Start isEmpty. Operand 17073 states and 28369 transitions. [2022-11-20 11:03:37,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-20 11:03:37,135 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:03:37,135 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] [2022-11-20 11:03:37,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 11:03:37,136 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:03:37,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:37,136 INFO L85 PathProgramCache]: Analyzing trace with hash -15643545, now seen corresponding path program 1 times [2022-11-20 11:03:37,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:37,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710524959] [2022-11-20 11:03:37,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:37,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:37,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:37,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:37,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:37,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710524959] [2022-11-20 11:03:37,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710524959] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:37,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:03:37,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:03:37,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712238608] [2022-11-20 11:03:37,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:37,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:03:37,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:37,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:03:37,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:03:37,281 INFO L87 Difference]: Start difference. First operand 17073 states and 28369 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:39,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:03:39,162 INFO L93 Difference]: Finished difference Result 38023 states and 63245 transitions. [2022-11-20 11:03:39,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:03:39,163 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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 133 [2022-11-20 11:03:39,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:03:39,232 INFO L225 Difference]: With dead ends: 38023 [2022-11-20 11:03:39,232 INFO L226 Difference]: Without dead ends: 26128 [2022-11-20 11:03:39,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:03:39,249 INFO L413 NwaCegarLoop]: 560 mSDtfsCounter, 124 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:03:39,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 1013 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:03:39,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26128 states. [2022-11-20 11:03:41,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26128 to 26126. [2022-11-20 11:03:41,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26126 states, 26125 states have (on average 1.6492631578947368) internal successors, (43087), 26125 states have internal predecessors, (43087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:41,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26126 states to 26126 states and 43087 transitions. [2022-11-20 11:03:41,155 INFO L78 Accepts]: Start accepts. Automaton has 26126 states and 43087 transitions. Word has length 133 [2022-11-20 11:03:41,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:03:41,155 INFO L495 AbstractCegarLoop]: Abstraction has 26126 states and 43087 transitions. [2022-11-20 11:03:41,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:41,156 INFO L276 IsEmpty]: Start isEmpty. Operand 26126 states and 43087 transitions. [2022-11-20 11:03:41,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-20 11:03:41,158 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:03:41,158 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] [2022-11-20 11:03:41,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 11:03:41,159 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:03:41,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:41,159 INFO L85 PathProgramCache]: Analyzing trace with hash 2123016934, now seen corresponding path program 1 times [2022-11-20 11:03:41,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:41,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593381104] [2022-11-20 11:03:41,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:41,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:41,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:41,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:41,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:41,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593381104] [2022-11-20 11:03:41,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593381104] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:41,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:03:41,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:03:41,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426585758] [2022-11-20 11:03:41,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:41,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:03:41,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:41,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:03:41,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:03:41,443 INFO L87 Difference]: Start difference. First operand 26126 states and 43087 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:44,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:03:44,115 INFO L93 Difference]: Finished difference Result 58253 states and 96104 transitions. [2022-11-20 11:03:44,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:03:44,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 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 133 [2022-11-20 11:03:44,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:03:44,315 INFO L225 Difference]: With dead ends: 58253 [2022-11-20 11:03:44,315 INFO L226 Difference]: Without dead ends: 39892 [2022-11-20 11:03:44,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:03:44,333 INFO L413 NwaCegarLoop]: 590 mSDtfsCounter, 131 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 1042 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:03:44,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 1042 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:03:44,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39892 states. [2022-11-20 11:03:46,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39892 to 39890. [2022-11-20 11:03:46,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39890 states, 39889 states have (on average 1.633708541201835) internal successors, (65167), 39889 states have internal predecessors, (65167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:46,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39890 states to 39890 states and 65167 transitions. [2022-11-20 11:03:46,665 INFO L78 Accepts]: Start accepts. Automaton has 39890 states and 65167 transitions. Word has length 133 [2022-11-20 11:03:46,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:03:46,666 INFO L495 AbstractCegarLoop]: Abstraction has 39890 states and 65167 transitions. [2022-11-20 11:03:46,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:46,666 INFO L276 IsEmpty]: Start isEmpty. Operand 39890 states and 65167 transitions. [2022-11-20 11:03:46,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-20 11:03:46,668 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:03:46,669 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] [2022-11-20 11:03:46,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 11:03:46,669 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:03:46,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:46,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1542676484, now seen corresponding path program 1 times [2022-11-20 11:03:46,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:46,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884339776] [2022-11-20 11:03:46,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:46,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:46,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:46,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:46,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:46,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884339776] [2022-11-20 11:03:46,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884339776] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:46,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:03:46,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:03:46,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237299868] [2022-11-20 11:03:46,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:46,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:03:46,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:46,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:03:46,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:03:46,899 INFO L87 Difference]: Start difference. First operand 39890 states and 65167 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 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) [2022-11-20 11:03:51,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:03:51,446 INFO L93 Difference]: Finished difference Result 129245 states and 211740 transitions. [2022-11-20 11:03:51,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:03:51,448 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 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 [2022-11-20 11:03:51,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:03:51,642 INFO L225 Difference]: With dead ends: 129245 [2022-11-20 11:03:51,643 INFO L226 Difference]: Without dead ends: 89570 [2022-11-20 11:03:51,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:03:51,687 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 453 mSDsluCounter, 1043 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 1505 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:03:51,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 1505 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:03:51,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89570 states. [2022-11-20 11:03:55,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89570 to 64505. [2022-11-20 11:03:55,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64505 states, 64504 states have (on average 1.626658811856629) internal successors, (104926), 64504 states have internal predecessors, (104926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:03:55,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64505 states to 64505 states and 104926 transitions. [2022-11-20 11:03:55,552 INFO L78 Accepts]: Start accepts. Automaton has 64505 states and 104926 transitions. Word has length 134 [2022-11-20 11:03:55,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:03:55,553 INFO L495 AbstractCegarLoop]: Abstraction has 64505 states and 104926 transitions. [2022-11-20 11:03:55,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 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) [2022-11-20 11:03:55,553 INFO L276 IsEmpty]: Start isEmpty. Operand 64505 states and 104926 transitions. [2022-11-20 11:03:55,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-20 11:03:55,555 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:03:55,556 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] [2022-11-20 11:03:55,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 11:03:55,556 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:03:55,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:55,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1330430292, now seen corresponding path program 1 times [2022-11-20 11:03:55,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:55,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530897835] [2022-11-20 11:03:55,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:55,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:55,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:56,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:56,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:56,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530897835] [2022-11-20 11:03:56,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530897835] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:56,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:03:56,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:03:56,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331526291] [2022-11-20 11:03:56,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:56,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:03:56,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:56,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:03:56,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:03:56,029 INFO L87 Difference]: Start difference. First operand 64505 states and 104926 transitions. Second operand has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 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) [2022-11-20 11:03:59,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:03:59,494 INFO L93 Difference]: Finished difference Result 128797 states and 209509 transitions. [2022-11-20 11:03:59,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:03:59,495 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 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 [2022-11-20 11:03:59,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:03:59,650 INFO L225 Difference]: With dead ends: 128797 [2022-11-20 11:03:59,651 INFO L226 Difference]: Without dead ends: 64507 [2022-11-20 11:03:59,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:03:59,719 INFO L413 NwaCegarLoop]: 469 mSDtfsCounter, 623 mSDsluCounter, 1311 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 1780 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:03:59,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [623 Valid, 1780 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:03:59,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64507 states. [2022-11-20 11:04:03,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64507 to 64505. [2022-11-20 11:04:03,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64505 states, 64504 states have (on average 1.6169694902641696) internal successors, (104301), 64504 states have internal predecessors, (104301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:04:03,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64505 states to 64505 states and 104301 transitions. [2022-11-20 11:04:03,641 INFO L78 Accepts]: Start accepts. Automaton has 64505 states and 104301 transitions. Word has length 136 [2022-11-20 11:04:03,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:04:03,642 INFO L495 AbstractCegarLoop]: Abstraction has 64505 states and 104301 transitions. [2022-11-20 11:04:03,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 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) [2022-11-20 11:04:03,642 INFO L276 IsEmpty]: Start isEmpty. Operand 64505 states and 104301 transitions. [2022-11-20 11:04:03,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-20 11:04:03,643 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:04:03,643 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] [2022-11-20 11:04:03,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 11:04:03,644 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:04:03,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:04:03,644 INFO L85 PathProgramCache]: Analyzing trace with hash -156781653, now seen corresponding path program 1 times [2022-11-20 11:04:03,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:04:03,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524782207] [2022-11-20 11:04:03,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:04:03,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:04:03,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:03,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:04:03,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:04:03,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524782207] [2022-11-20 11:04:03,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524782207] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:04:03,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:04:03,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:04:03,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214867322] [2022-11-20 11:04:03,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:04:03,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:04:03,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:04:03,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:04:03,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:04:03,993 INFO L87 Difference]: Start difference. First operand 64505 states and 104301 transitions. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:04:10,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:04:10,370 INFO L93 Difference]: Finished difference Result 188667 states and 305529 transitions. [2022-11-20 11:04:10,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:04:10,371 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 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 139 [2022-11-20 11:04:10,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:04:10,594 INFO L225 Difference]: With dead ends: 188667 [2022-11-20 11:04:10,594 INFO L226 Difference]: Without dead ends: 124377 [2022-11-20 11:04:10,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:04:10,650 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 495 mSDsluCounter, 1329 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 1791 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:04:10,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 1791 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:04:10,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124377 states.