./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem13_label52.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f7208a-d7dd-483b-b391-2dc9a126dad9/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f7208a-d7dd-483b-b391-2dc9a126dad9/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f7208a-d7dd-483b-b391-2dc9a126dad9/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f7208a-d7dd-483b-b391-2dc9a126dad9/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem13_label52.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f7208a-d7dd-483b-b391-2dc9a126dad9/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f7208a-d7dd-483b-b391-2dc9a126dad9/bin/uautomizer-vX5HgA9Q3a --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 eceda023c7394c88c46221fb5ed6b67ae6e1976efca78e0b148b1f17e3b2b45b --- 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-b5237d8 [2022-11-21 17:01:39,608 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 17:01:39,611 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 17:01:39,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 17:01:39,656 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 17:01:39,660 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 17:01:39,662 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 17:01:39,664 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 17:01:39,666 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 17:01:39,667 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 17:01:39,668 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 17:01:39,671 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 17:01:39,675 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 17:01:39,683 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 17:01:39,684 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 17:01:39,685 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 17:01:39,686 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 17:01:39,687 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 17:01:39,688 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 17:01:39,690 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 17:01:39,692 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 17:01:39,698 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 17:01:39,700 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 17:01:39,701 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 17:01:39,716 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 17:01:39,719 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 17:01:39,719 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 17:01:39,720 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 17:01:39,722 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 17:01:39,723 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 17:01:39,724 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 17:01:39,725 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 17:01:39,727 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 17:01:39,729 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 17:01:39,730 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 17:01:39,730 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 17:01:39,731 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 17:01:39,731 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 17:01:39,732 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 17:01:39,734 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 17:01:39,734 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 17:01:39,735 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f7208a-d7dd-483b-b391-2dc9a126dad9/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 17:01:39,777 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 17:01:39,778 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 17:01:39,778 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 17:01:39,779 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 17:01:39,780 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 17:01:39,780 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 17:01:39,781 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 17:01:39,781 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 17:01:39,781 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 17:01:39,781 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 17:01:39,783 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 17:01:39,783 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 17:01:39,783 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 17:01:39,783 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 17:01:39,784 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 17:01:39,784 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 17:01:39,784 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 17:01:39,784 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 17:01:39,785 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 17:01:39,785 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 17:01:39,785 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 17:01:39,785 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 17:01:39,786 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 17:01:39,786 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 17:01:39,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:01:39,786 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 17:01:39,787 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 17:01:39,787 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 17:01:39,787 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 17:01:39,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 17:01:39,788 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 17:01:39,788 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 17:01:39,788 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 17:01:39,789 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_99f7208a-d7dd-483b-b391-2dc9a126dad9/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f7208a-d7dd-483b-b391-2dc9a126dad9/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eceda023c7394c88c46221fb5ed6b67ae6e1976efca78e0b148b1f17e3b2b45b [2022-11-21 17:01:40,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 17:01:40,103 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 17:01:40,106 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 17:01:40,107 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 17:01:40,108 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 17:01:40,109 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f7208a-d7dd-483b-b391-2dc9a126dad9/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/eca-rers2012/Problem13_label52.c [2022-11-21 17:01:43,183 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:01:43,777 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:01:43,778 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f7208a-d7dd-483b-b391-2dc9a126dad9/sv-benchmarks/c/eca-rers2012/Problem13_label52.c [2022-11-21 17:01:43,812 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f7208a-d7dd-483b-b391-2dc9a126dad9/bin/uautomizer-vX5HgA9Q3a/data/edd164050/43d42c6639a34463bf65675fda636753/FLAGd9467bcde [2022-11-21 17:01:43,830 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f7208a-d7dd-483b-b391-2dc9a126dad9/bin/uautomizer-vX5HgA9Q3a/data/edd164050/43d42c6639a34463bf65675fda636753 [2022-11-21 17:01:43,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:01:43,836 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:01:43,838 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:01:43,838 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:01:43,842 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:01:43,843 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:01:43" (1/1) ... [2022-11-21 17:01:43,844 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f5ca8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:01:43, skipping insertion in model container [2022-11-21 17:01:43,844 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:01:43" (1/1) ... [2022-11-21 17:01:43,851 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:01:44,008 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:01:44,355 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_99f7208a-d7dd-483b-b391-2dc9a126dad9/sv-benchmarks/c/eca-rers2012/Problem13_label52.c[9091,9104] [2022-11-21 17:01:45,453 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:01:45,464 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 17:01:45,500 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_99f7208a-d7dd-483b-b391-2dc9a126dad9/sv-benchmarks/c/eca-rers2012/Problem13_label52.c[9091,9104] [2022-11-21 17:01:46,173 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:01:46,199 INFO L208 MainTranslator]: Completed translation [2022-11-21 17:01:46,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:01:46 WrapperNode [2022-11-21 17:01:46,200 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:01:46,202 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 17:01:46,202 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 17:01:46,202 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 17:01:46,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:01:46" (1/1) ... [2022-11-21 17:01:46,282 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:01:46" (1/1) ... [2022-11-21 17:01:46,919 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5583 [2022-11-21 17:01:46,920 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 17:01:46,933 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 17:01:46,934 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 17:01:46,934 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 17:01:46,943 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:01:46" (1/1) ... [2022-11-21 17:01:46,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:01:46" (1/1) ... [2022-11-21 17:01:47,106 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:01:46" (1/1) ... [2022-11-21 17:01:47,106 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:01:46" (1/1) ... [2022-11-21 17:01:47,527 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:01:46" (1/1) ... [2022-11-21 17:01:47,560 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:01:46" (1/1) ... [2022-11-21 17:01:47,634 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:01:46" (1/1) ... [2022-11-21 17:01:47,652 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:01:46" (1/1) ... [2022-11-21 17:01:47,818 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 17:01:47,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 17:01:47,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 17:01:47,821 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 17:01:47,822 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:01:46" (1/1) ... [2022-11-21 17:01:47,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:01:47,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f7208a-d7dd-483b-b391-2dc9a126dad9/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:01:47,861 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f7208a-d7dd-483b-b391-2dc9a126dad9/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 17:01:47,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f7208a-d7dd-483b-b391-2dc9a126dad9/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 17:01:47,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 17:01:47,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 17:01:47,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 17:01:47,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 17:01:47,983 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 17:01:47,985 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 17:01:54,463 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 17:01:54,502 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 17:01:54,504 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-21 17:01:54,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:01:54 BoogieIcfgContainer [2022-11-21 17:01:54,509 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 17:01:54,512 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 17:01:54,513 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 17:01:54,517 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 17:01:54,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:01:43" (1/3) ... [2022-11-21 17:01:54,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@683c108a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:01:54, skipping insertion in model container [2022-11-21 17:01:54,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:01:46" (2/3) ... [2022-11-21 17:01:54,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@683c108a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:01:54, skipping insertion in model container [2022-11-21 17:01:54,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:01:54" (3/3) ... [2022-11-21 17:01:54,523 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label52.c [2022-11-21 17:01:54,544 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 17:01:54,545 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 17:01:54,631 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:01:54,638 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;@6663a64c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:01:54,638 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 17:01:54,647 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:01:54,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-21 17:01:54,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:01:54,658 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] [2022-11-21 17:01:54,658 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:01:54,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:01:54,664 INFO L85 PathProgramCache]: Analyzing trace with hash -107486446, now seen corresponding path program 1 times [2022-11-21 17:01:54,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:01:54,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757561379] [2022-11-21 17:01:54,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:01:54,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:01:54,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:01:55,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:01:55,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:01:55,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757561379] [2022-11-21 17:01:55,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757561379] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:01:55,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:01:55,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:01:55,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029237376] [2022-11-21 17:01:55,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:01:55,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:01:55,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:01:55,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:01:55,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:01:55,163 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 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 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:00,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:02:00,900 INFO L93 Difference]: Finished difference Result 3035 states and 5643 transitions. [2022-11-21 17:02:00,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:02:00,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2022-11-21 17:02:00,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:02:00,927 INFO L225 Difference]: With dead ends: 3035 [2022-11-21 17:02:00,927 INFO L226 Difference]: Without dead ends: 1873 [2022-11-21 17:02:00,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:02:00,938 INFO L413 NwaCegarLoop]: 991 mSDtfsCounter, 841 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 2505 mSolverCounterSat, 858 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 1145 SdHoareTripleChecker+Invalid, 3363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 858 IncrementalHoareTripleChecker+Valid, 2505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-21 17:02:00,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 1145 Invalid, 3363 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [858 Valid, 2505 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-11-21 17:02:00,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1873 states. [2022-11-21 17:02:01,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1873 to 1859. [2022-11-21 17:02:01,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1859 states, 1858 states have (on average 1.5441334768568353) internal successors, (2869), 1858 states have internal predecessors, (2869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:01,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1859 states to 1859 states and 2869 transitions. [2022-11-21 17:02:01,086 INFO L78 Accepts]: Start accepts. Automaton has 1859 states and 2869 transitions. Word has length 64 [2022-11-21 17:02:01,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:02:01,088 INFO L495 AbstractCegarLoop]: Abstraction has 1859 states and 2869 transitions. [2022-11-21 17:02:01,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:01,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1859 states and 2869 transitions. [2022-11-21 17:02:01,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-21 17:02:01,101 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:02:01,103 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:02:01,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 17:02:01,104 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:02:01,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:01,108 INFO L85 PathProgramCache]: Analyzing trace with hash 700651805, now seen corresponding path program 1 times [2022-11-21 17:02:01,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:02:01,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028860767] [2022-11-21 17:02:01,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:01,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:02:01,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:01,358 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:01,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:02:01,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028860767] [2022-11-21 17:02:01,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028860767] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:02:01,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:02:01,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:02:01,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694415704] [2022-11-21 17:02:01,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:02:01,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:02:01,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:02:01,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:02:01,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:02:01,362 INFO L87 Difference]: Start difference. First operand 1859 states and 2869 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 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) [2022-11-21 17:02:06,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:02:06,601 INFO L93 Difference]: Finished difference Result 5317 states and 8229 transitions. [2022-11-21 17:02:06,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:02:06,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 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 [2022-11-21 17:02:06,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:02:06,614 INFO L225 Difference]: With dead ends: 5317 [2022-11-21 17:02:06,615 INFO L226 Difference]: Without dead ends: 3460 [2022-11-21 17:02:06,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:02:06,619 INFO L413 NwaCegarLoop]: 1039 mSDtfsCounter, 826 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2402 mSolverCounterSat, 877 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 3279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 877 IncrementalHoareTripleChecker+Valid, 2402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:02:06,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 1192 Invalid, 3279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [877 Valid, 2402 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-21 17:02:06,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3460 states. [2022-11-21 17:02:06,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3460 to 3459. [2022-11-21 17:02:06,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3459 states, 3458 states have (on average 1.3805668016194332) internal successors, (4774), 3458 states have internal predecessors, (4774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:06,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3459 states to 3459 states and 4774 transitions. [2022-11-21 17:02:06,719 INFO L78 Accepts]: Start accepts. Automaton has 3459 states and 4774 transitions. Word has length 136 [2022-11-21 17:02:06,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:02:06,720 INFO L495 AbstractCegarLoop]: Abstraction has 3459 states and 4774 transitions. [2022-11-21 17:02:06,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 2 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) [2022-11-21 17:02:06,720 INFO L276 IsEmpty]: Start isEmpty. Operand 3459 states and 4774 transitions. [2022-11-21 17:02:06,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-11-21 17:02:06,727 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:02:06,727 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:02:06,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 17:02:06,728 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:02:06,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:06,729 INFO L85 PathProgramCache]: Analyzing trace with hash 656195604, now seen corresponding path program 1 times [2022-11-21 17:02:06,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:02:06,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773138759] [2022-11-21 17:02:06,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:06,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:02:06,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:07,486 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:07,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:02:07,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773138759] [2022-11-21 17:02:07,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773138759] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:02:07,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:02:07,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:02:07,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509377747] [2022-11-21 17:02:07,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:02:07,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:02:07,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:02:07,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:02:07,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:02:07,490 INFO L87 Difference]: Start difference. First operand 3459 states and 4774 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:14,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:02:14,603 INFO L93 Difference]: Finished difference Result 10870 states and 14768 transitions. [2022-11-21 17:02:14,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 17:02:14,607 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 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 150 [2022-11-21 17:02:14,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:02:14,630 INFO L225 Difference]: With dead ends: 10870 [2022-11-21 17:02:14,631 INFO L226 Difference]: Without dead ends: 7413 [2022-11-21 17:02:14,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:02:14,636 INFO L413 NwaCegarLoop]: 709 mSDtfsCounter, 2582 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 4117 mSolverCounterSat, 831 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2582 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 4948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 831 IncrementalHoareTripleChecker+Valid, 4117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-21 17:02:14,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2582 Valid, 1003 Invalid, 4948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [831 Valid, 4117 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-11-21 17:02:14,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7413 states. [2022-11-21 17:02:14,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7413 to 7412. [2022-11-21 17:02:14,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7412 states, 7411 states have (on average 1.2698691134799622) internal successors, (9411), 7411 states have internal predecessors, (9411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:14,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7412 states to 7412 states and 9411 transitions. [2022-11-21 17:02:14,781 INFO L78 Accepts]: Start accepts. Automaton has 7412 states and 9411 transitions. Word has length 150 [2022-11-21 17:02:14,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:02:14,782 INFO L495 AbstractCegarLoop]: Abstraction has 7412 states and 9411 transitions. [2022-11-21 17:02:14,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:14,782 INFO L276 IsEmpty]: Start isEmpty. Operand 7412 states and 9411 transitions. [2022-11-21 17:02:14,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2022-11-21 17:02:14,786 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:02:14,786 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:02:14,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 17:02:14,787 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:02:14,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:14,788 INFO L85 PathProgramCache]: Analyzing trace with hash 2018060010, now seen corresponding path program 1 times [2022-11-21 17:02:14,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:02:14,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168710810] [2022-11-21 17:02:14,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:14,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:02:14,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:15,155 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-21 17:02:15,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:02:15,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168710810] [2022-11-21 17:02:15,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168710810] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:02:15,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:02:15,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:02:15,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133636729] [2022-11-21 17:02:15,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:02:15,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:02:15,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:02:15,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:02:15,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:02:15,160 INFO L87 Difference]: Start difference. First operand 7412 states and 9411 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:20,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:02:20,152 INFO L93 Difference]: Finished difference Result 20357 states and 26252 transitions. [2022-11-21 17:02:20,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:02:20,155 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 0 states have call successors, (0), 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 231 [2022-11-21 17:02:20,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:02:20,201 INFO L225 Difference]: With dead ends: 20357 [2022-11-21 17:02:20,202 INFO L226 Difference]: Without dead ends: 13734 [2022-11-21 17:02:20,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:02:20,211 INFO L413 NwaCegarLoop]: 851 mSDtfsCounter, 889 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2576 mSolverCounterSat, 747 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 3323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 747 IncrementalHoareTripleChecker+Valid, 2576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-21 17:02:20,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 980 Invalid, 3323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [747 Valid, 2576 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-21 17:02:20,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13734 states. [2022-11-21 17:02:20,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13734 to 12937. [2022-11-21 17:02:20,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12937 states, 12936 states have (on average 1.215213358070501) internal successors, (15720), 12936 states have internal predecessors, (15720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:20,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12937 states to 12937 states and 15720 transitions. [2022-11-21 17:02:20,559 INFO L78 Accepts]: Start accepts. Automaton has 12937 states and 15720 transitions. Word has length 231 [2022-11-21 17:02:20,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:02:20,561 INFO L495 AbstractCegarLoop]: Abstraction has 12937 states and 15720 transitions. [2022-11-21 17:02:20,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:20,562 INFO L276 IsEmpty]: Start isEmpty. Operand 12937 states and 15720 transitions. [2022-11-21 17:02:20,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2022-11-21 17:02:20,568 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:02:20,568 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:02:20,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 17:02:20,569 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:02:20,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:20,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1278701466, now seen corresponding path program 1 times [2022-11-21 17:02:20,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:02:20,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837085393] [2022-11-21 17:02:20,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:20,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:02:20,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:20,953 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 218 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:02:20,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:02:20,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837085393] [2022-11-21 17:02:20,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837085393] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:02:20,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:02:20,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:02:20,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668100352] [2022-11-21 17:02:20,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:02:20,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:02:20,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:02:20,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:02:20,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:02:20,958 INFO L87 Difference]: Start difference. First operand 12937 states and 15720 transitions. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:25,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:02:25,666 INFO L93 Difference]: Finished difference Result 31392 states and 39119 transitions. [2022-11-21 17:02:25,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:02:25,667 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 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 263 [2022-11-21 17:02:25,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:02:25,726 INFO L225 Difference]: With dead ends: 31392 [2022-11-21 17:02:25,726 INFO L226 Difference]: Without dead ends: 19244 [2022-11-21 17:02:25,739 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 [2022-11-21 17:02:25,741 INFO L413 NwaCegarLoop]: 809 mSDtfsCounter, 858 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2381 mSolverCounterSat, 914 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 3295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 914 IncrementalHoareTripleChecker+Valid, 2381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-21 17:02:25,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [858 Valid, 926 Invalid, 3295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [914 Valid, 2381 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-21 17:02:25,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19244 states. [2022-11-21 17:02:25,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19244 to 18447. [2022-11-21 17:02:26,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18447 states, 18446 states have (on average 1.2024287108316165) internal successors, (22180), 18446 states have internal predecessors, (22180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:26,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18447 states to 18447 states and 22180 transitions. [2022-11-21 17:02:26,042 INFO L78 Accepts]: Start accepts. Automaton has 18447 states and 22180 transitions. Word has length 263 [2022-11-21 17:02:26,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:02:26,044 INFO L495 AbstractCegarLoop]: Abstraction has 18447 states and 22180 transitions. [2022-11-21 17:02:26,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:26,048 INFO L276 IsEmpty]: Start isEmpty. Operand 18447 states and 22180 transitions. [2022-11-21 17:02:26,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2022-11-21 17:02:26,058 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:02:26,058 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:02:26,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 17:02:26,060 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:02:26,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:26,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1840688272, now seen corresponding path program 1 times [2022-11-21 17:02:26,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:02:26,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851340788] [2022-11-21 17:02:26,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:26,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:02:26,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:26,442 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-11-21 17:02:26,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:02:26,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851340788] [2022-11-21 17:02:26,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851340788] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:02:26,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:02:26,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:02:26,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923972275] [2022-11-21 17:02:26,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:02:26,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:02:26,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:02:26,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:02:26,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:02:26,446 INFO L87 Difference]: Start difference. First operand 18447 states and 22180 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:31,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:02:31,416 INFO L93 Difference]: Finished difference Result 42412 states and 52037 transitions. [2022-11-21 17:02:31,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:02:31,417 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 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 352 [2022-11-21 17:02:31,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:02:31,455 INFO L225 Difference]: With dead ends: 42412 [2022-11-21 17:02:31,455 INFO L226 Difference]: Without dead ends: 24754 [2022-11-21 17:02:31,469 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 [2022-11-21 17:02:31,472 INFO L413 NwaCegarLoop]: 1796 mSDtfsCounter, 806 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2542 mSolverCounterSat, 723 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 1947 SdHoareTripleChecker+Invalid, 3265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 723 IncrementalHoareTripleChecker+Valid, 2542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-21 17:02:31,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 1947 Invalid, 3265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [723 Valid, 2542 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-21 17:02:31,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24754 states. [2022-11-21 17:02:31,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24754 to 23962. [2022-11-21 17:02:31,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23962 states, 23961 states have (on average 1.1787070656483452) internal successors, (28243), 23961 states have internal predecessors, (28243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:31,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23962 states to 23962 states and 28243 transitions. [2022-11-21 17:02:31,822 INFO L78 Accepts]: Start accepts. Automaton has 23962 states and 28243 transitions. Word has length 352 [2022-11-21 17:02:31,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:02:31,823 INFO L495 AbstractCegarLoop]: Abstraction has 23962 states and 28243 transitions. [2022-11-21 17:02:31,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:31,824 INFO L276 IsEmpty]: Start isEmpty. Operand 23962 states and 28243 transitions. [2022-11-21 17:02:31,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2022-11-21 17:02:31,833 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:02:31,833 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:02:31,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 17:02:31,834 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:02:31,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:31,834 INFO L85 PathProgramCache]: Analyzing trace with hash 328763766, now seen corresponding path program 1 times [2022-11-21 17:02:31,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:02:31,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983149962] [2022-11-21 17:02:31,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:31,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:02:31,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:32,256 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 413 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-11-21 17:02:32,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:02:32,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983149962] [2022-11-21 17:02:32,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983149962] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:02:32,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:02:32,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:02:32,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919819823] [2022-11-21 17:02:32,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:02:32,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:02:32,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:02:32,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:02:32,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:02:32,259 INFO L87 Difference]: Start difference. First operand 23962 states and 28243 transitions. Second operand has 4 states, 4 states have (on average 75.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:41,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:02:41,840 INFO L93 Difference]: Finished difference Result 89064 states and 105284 transitions. [2022-11-21 17:02:41,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 17:02:41,841 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 75.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 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 361 [2022-11-21 17:02:41,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:02:41,932 INFO L225 Difference]: With dead ends: 89064 [2022-11-21 17:02:41,932 INFO L226 Difference]: Without dead ends: 65891 [2022-11-21 17:02:41,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:02:41,962 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 1732 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 6612 mSolverCounterSat, 1141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1732 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 7753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1141 IncrementalHoareTripleChecker+Valid, 6612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:02:41,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1732 Valid, 679 Invalid, 7753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1141 Valid, 6612 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2022-11-21 17:02:42,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65891 states. [2022-11-21 17:02:42,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65891 to 64189. [2022-11-21 17:02:42,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64189 states, 64188 states have (on average 1.1559325730666168) internal successors, (74197), 64188 states have internal predecessors, (74197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:43,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64189 states to 64189 states and 74197 transitions. [2022-11-21 17:02:43,041 INFO L78 Accepts]: Start accepts. Automaton has 64189 states and 74197 transitions. Word has length 361 [2022-11-21 17:02:43,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:02:43,042 INFO L495 AbstractCegarLoop]: Abstraction has 64189 states and 74197 transitions. [2022-11-21 17:02:43,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:43,042 INFO L276 IsEmpty]: Start isEmpty. Operand 64189 states and 74197 transitions. [2022-11-21 17:02:43,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2022-11-21 17:02:43,051 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:02:43,051 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:02:43,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 17:02:43,052 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:02:43,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:43,052 INFO L85 PathProgramCache]: Analyzing trace with hash -523227709, now seen corresponding path program 1 times [2022-11-21 17:02:43,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:02:43,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945656354] [2022-11-21 17:02:43,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:43,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:02:43,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:43,555 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 292 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2022-11-21 17:02:43,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:02:43,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945656354] [2022-11-21 17:02:43,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945656354] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:02:43,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:02:43,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:02:43,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481844492] [2022-11-21 17:02:43,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:02:43,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:02:43,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:02:43,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:02:43,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:02:43,558 INFO L87 Difference]: Start difference. First operand 64189 states and 74197 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:48,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:02:48,747 INFO L93 Difference]: Finished difference Result 140992 states and 162393 transitions. [2022-11-21 17:02:48,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:02:48,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 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 361 [2022-11-21 17:02:48,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:02:48,838 INFO L225 Difference]: With dead ends: 140992 [2022-11-21 17:02:48,838 INFO L226 Difference]: Without dead ends: 77592 [2022-11-21 17:02:48,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:02:48,875 INFO L413 NwaCegarLoop]: 1019 mSDtfsCounter, 730 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 2705 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 1199 SdHoareTripleChecker+Invalid, 2885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 2705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-21 17:02:48,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 1199 Invalid, 2885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 2705 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-21 17:02:48,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77592 states. [2022-11-21 17:02:49,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77592 to 76794. [2022-11-21 17:02:50,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76794 states, 76793 states have (on average 1.1395830349120362) internal successors, (87512), 76793 states have internal predecessors, (87512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:50,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76794 states to 76794 states and 87512 transitions. [2022-11-21 17:02:50,111 INFO L78 Accepts]: Start accepts. Automaton has 76794 states and 87512 transitions. Word has length 361 [2022-11-21 17:02:50,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:02:50,111 INFO L495 AbstractCegarLoop]: Abstraction has 76794 states and 87512 transitions. [2022-11-21 17:02:50,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:50,112 INFO L276 IsEmpty]: Start isEmpty. Operand 76794 states and 87512 transitions. [2022-11-21 17:02:50,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2022-11-21 17:02:50,124 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:02:50,124 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:02:50,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 17:02:50,125 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:02:50,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:50,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1820069785, now seen corresponding path program 1 times [2022-11-21 17:02:50,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:02:50,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163074350] [2022-11-21 17:02:50,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:50,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:02:50,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:52,486 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 292 proven. 113 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-11-21 17:02:52,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:02:52,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163074350] [2022-11-21 17:02:52,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163074350] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:02:52,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521020734] [2022-11-21 17:02:52,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:52,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:02:52,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f7208a-d7dd-483b-b391-2dc9a126dad9/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:02:52,491 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f7208a-d7dd-483b-b391-2dc9a126dad9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:02:52,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f7208a-d7dd-483b-b391-2dc9a126dad9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 17:02:52,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:52,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 17:02:52,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:02:53,026 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 292 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-11-21 17:02:53,027 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:02:53,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521020734] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:02:53,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:02:53,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-21 17:02:53,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370232839] [2022-11-21 17:02:53,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:02:53,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:02:53,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:02:53,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:02:53,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-21 17:02:53,030 INFO L87 Difference]: Start difference. First operand 76794 states and 87512 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:57,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:02:57,663 INFO L93 Difference]: Finished difference Result 152797 states and 174229 transitions. [2022-11-21 17:02:57,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:02:57,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 390 [2022-11-21 17:02:57,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:02:57,755 INFO L225 Difference]: With dead ends: 152797 [2022-11-21 17:02:57,755 INFO L226 Difference]: Without dead ends: 76792 [2022-11-21 17:02:57,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 389 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-21 17:02:57,796 INFO L413 NwaCegarLoop]: 1362 mSDtfsCounter, 1122 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 2466 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1122 SdHoareTripleChecker+Valid, 1443 SdHoareTripleChecker+Invalid, 2916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 2466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:02:57,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1122 Valid, 1443 Invalid, 2916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 2466 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-21 17:02:57,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76792 states. [2022-11-21 17:02:58,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76792 to 76004. [2022-11-21 17:02:58,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76004 states, 76003 states have (on average 1.1082325697669828) internal successors, (84229), 76003 states have internal predecessors, (84229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:58,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76004 states to 76004 states and 84229 transitions. [2022-11-21 17:02:58,840 INFO L78 Accepts]: Start accepts. Automaton has 76004 states and 84229 transitions. Word has length 390 [2022-11-21 17:02:58,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:02:58,840 INFO L495 AbstractCegarLoop]: Abstraction has 76004 states and 84229 transitions. [2022-11-21 17:02:58,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:02:58,840 INFO L276 IsEmpty]: Start isEmpty. Operand 76004 states and 84229 transitions. [2022-11-21 17:02:58,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2022-11-21 17:02:58,855 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:02:58,855 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:02:58,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f7208a-d7dd-483b-b391-2dc9a126dad9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 17:02:59,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f7208a-d7dd-483b-b391-2dc9a126dad9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-21 17:02:59,062 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:02:59,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:02:59,062 INFO L85 PathProgramCache]: Analyzing trace with hash 357739575, now seen corresponding path program 1 times [2022-11-21 17:02:59,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:02:59,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000046859] [2022-11-21 17:02:59,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:02:59,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:02:59,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:02:59,802 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 576 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-11-21 17:02:59,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:02:59,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000046859] [2022-11-21 17:02:59,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000046859] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:02:59,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:02:59,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:02:59,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090302631] [2022-11-21 17:02:59,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:02:59,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:02:59,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:02:59,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:02:59,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:02:59,805 INFO L87 Difference]: Start difference. First operand 76004 states and 84229 transitions. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:05,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:03:05,222 INFO L93 Difference]: Finished difference Result 170117 states and 190568 transitions. [2022-11-21 17:03:05,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:03:05,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 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 420 [2022-11-21 17:03:05,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:03:05,363 INFO L225 Difference]: With dead ends: 170117 [2022-11-21 17:03:05,363 INFO L226 Difference]: Without dead ends: 94902 [2022-11-21 17:03:05,401 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 [2022-11-21 17:03:05,402 INFO L413 NwaCegarLoop]: 825 mSDtfsCounter, 903 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 2415 mSolverCounterSat, 944 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 903 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 3359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 944 IncrementalHoareTripleChecker+Valid, 2415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-21 17:03:05,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [903 Valid, 909 Invalid, 3359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [944 Valid, 2415 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-21 17:03:05,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94902 states. [2022-11-21 17:03:06,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94902 to 93310. [2022-11-21 17:03:06,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93310 states, 93309 states have (on average 1.1153157787566044) internal successors, (104069), 93309 states have internal predecessors, (104069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:06,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93310 states to 93310 states and 104069 transitions. [2022-11-21 17:03:06,908 INFO L78 Accepts]: Start accepts. Automaton has 93310 states and 104069 transitions. Word has length 420 [2022-11-21 17:03:06,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:03:06,909 INFO L495 AbstractCegarLoop]: Abstraction has 93310 states and 104069 transitions. [2022-11-21 17:03:06,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:06,910 INFO L276 IsEmpty]: Start isEmpty. Operand 93310 states and 104069 transitions. [2022-11-21 17:03:06,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2022-11-21 17:03:06,927 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:03:06,928 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:03:06,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 17:03:06,929 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:03:06,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:03:06,929 INFO L85 PathProgramCache]: Analyzing trace with hash -85367684, now seen corresponding path program 1 times [2022-11-21 17:03:06,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:03:06,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950928406] [2022-11-21 17:03:06,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:03:06,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:03:07,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:03:07,485 INFO L134 CoverageAnalysis]: Checked inductivity of 746 backedges. 474 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-11-21 17:03:07,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:03:07,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950928406] [2022-11-21 17:03:07,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950928406] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:03:07,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:03:07,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:03:07,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048296842] [2022-11-21 17:03:07,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:03:07,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:03:07,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:03:07,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:03:07,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:03:07,488 INFO L87 Difference]: Start difference. First operand 93310 states and 104069 transitions. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:12,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:03:12,853 INFO L93 Difference]: Finished difference Result 185840 states and 207365 transitions. [2022-11-21 17:03:12,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:03:12,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 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 458 [2022-11-21 17:03:12,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:03:12,943 INFO L225 Difference]: With dead ends: 185840 [2022-11-21 17:03:12,944 INFO L226 Difference]: Without dead ends: 93319 [2022-11-21 17:03:12,967 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 [2022-11-21 17:03:12,968 INFO L413 NwaCegarLoop]: 1717 mSDtfsCounter, 795 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 2506 mSolverCounterSat, 680 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 1867 SdHoareTripleChecker+Invalid, 3186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 680 IncrementalHoareTripleChecker+Valid, 2506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-21 17:03:12,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 1867 Invalid, 3186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [680 Valid, 2506 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-21 17:03:13,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93319 states. [2022-11-21 17:03:14,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93319 to 93300. [2022-11-21 17:03:14,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93300 states, 93299 states have (on average 1.0810512438504165) internal successors, (100861), 93299 states have internal predecessors, (100861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:14,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93300 states to 93300 states and 100861 transitions. [2022-11-21 17:03:14,198 INFO L78 Accepts]: Start accepts. Automaton has 93300 states and 100861 transitions. Word has length 458 [2022-11-21 17:03:14,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:03:14,199 INFO L495 AbstractCegarLoop]: Abstraction has 93300 states and 100861 transitions. [2022-11-21 17:03:14,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:14,199 INFO L276 IsEmpty]: Start isEmpty. Operand 93300 states and 100861 transitions. [2022-11-21 17:03:14,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2022-11-21 17:03:14,208 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:03:14,208 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:03:14,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 17:03:14,209 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:03:14,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:03:14,209 INFO L85 PathProgramCache]: Analyzing trace with hash -428167132, now seen corresponding path program 1 times [2022-11-21 17:03:14,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:03:14,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249638637] [2022-11-21 17:03:14,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:03:14,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:03:14,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:03:14,497 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 424 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-11-21 17:03:14,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:03:14,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249638637] [2022-11-21 17:03:14,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249638637] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:03:14,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:03:14,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:03:14,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030366563] [2022-11-21 17:03:14,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:03:14,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:03:14,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:03:14,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:03:14,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:03:14,500 INFO L87 Difference]: Start difference. First operand 93300 states and 100861 transitions. Second operand has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:19,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:03:19,566 INFO L93 Difference]: Finished difference Result 192871 states and 208133 transitions. [2022-11-21 17:03:19,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:03:19,567 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 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 486 [2022-11-21 17:03:19,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:03:19,672 INFO L225 Difference]: With dead ends: 192871 [2022-11-21 17:03:19,672 INFO L226 Difference]: Without dead ends: 99573 [2022-11-21 17:03:19,705 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 [2022-11-21 17:03:19,706 INFO L413 NwaCegarLoop]: 1493 mSDtfsCounter, 1023 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 2348 mSolverCounterSat, 589 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1023 SdHoareTripleChecker+Valid, 1627 SdHoareTripleChecker+Invalid, 2937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 589 IncrementalHoareTripleChecker+Valid, 2348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-21 17:03:19,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1023 Valid, 1627 Invalid, 2937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [589 Valid, 2348 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-21 17:03:19,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99573 states. [2022-11-21 17:03:20,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99573 to 92482. [2022-11-21 17:03:20,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92482 states, 92481 states have (on average 1.0580659811204463) internal successors, (97851), 92481 states have internal predecessors, (97851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:21,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92482 states to 92482 states and 97851 transitions. [2022-11-21 17:03:21,121 INFO L78 Accepts]: Start accepts. Automaton has 92482 states and 97851 transitions. Word has length 486 [2022-11-21 17:03:21,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:03:21,122 INFO L495 AbstractCegarLoop]: Abstraction has 92482 states and 97851 transitions. [2022-11-21 17:03:21,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:21,122 INFO L276 IsEmpty]: Start isEmpty. Operand 92482 states and 97851 transitions. [2022-11-21 17:03:21,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2022-11-21 17:03:21,130 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:03:21,131 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:03:21,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 17:03:21,131 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:03:21,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:03:21,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1065805810, now seen corresponding path program 1 times [2022-11-21 17:03:21,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:03:21,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946299286] [2022-11-21 17:03:21,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:03:21,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:03:21,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:03:23,824 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 361 proven. 113 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-11-21 17:03:23,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:03:23,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946299286] [2022-11-21 17:03:23,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946299286] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:03:23,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427863107] [2022-11-21 17:03:23,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:03:23,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:03:23,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f7208a-d7dd-483b-b391-2dc9a126dad9/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:03:23,827 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f7208a-d7dd-483b-b391-2dc9a126dad9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:03:23,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f7208a-d7dd-483b-b391-2dc9a126dad9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 17:03:24,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:03:24,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 17:03:24,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:03:24,373 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 423 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-11-21 17:03:24,374 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:03:24,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427863107] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:03:24,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:03:24,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-21 17:03:24,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745282947] [2022-11-21 17:03:24,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:03:24,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:03:24,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:03:24,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:03:24,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-21 17:03:24,377 INFO L87 Difference]: Start difference. First operand 92482 states and 97851 transitions. Second operand has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:28,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:03:28,933 INFO L93 Difference]: Finished difference Result 180995 states and 192672 transitions. [2022-11-21 17:03:28,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:03:28,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 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 494 [2022-11-21 17:03:28,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:03:29,038 INFO L225 Difference]: With dead ends: 180995 [2022-11-21 17:03:29,038 INFO L226 Difference]: Without dead ends: 102688 [2022-11-21 17:03:29,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 493 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-21 17:03:29,068 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 1127 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 2256 mSolverCounterSat, 799 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1127 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 3055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 799 IncrementalHoareTripleChecker+Valid, 2256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:03:29,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1127 Valid, 367 Invalid, 3055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [799 Valid, 2256 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-21 17:03:29,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102688 states. [2022-11-21 17:03:30,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102688 to 102688. [2022-11-21 17:03:30,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102688 states, 102687 states have (on average 1.057553536474919) internal successors, (108597), 102687 states have internal predecessors, (108597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:30,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102688 states to 102688 states and 108597 transitions. [2022-11-21 17:03:30,516 INFO L78 Accepts]: Start accepts. Automaton has 102688 states and 108597 transitions. Word has length 494 [2022-11-21 17:03:30,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:03:30,516 INFO L495 AbstractCegarLoop]: Abstraction has 102688 states and 108597 transitions. [2022-11-21 17:03:30,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:30,517 INFO L276 IsEmpty]: Start isEmpty. Operand 102688 states and 108597 transitions. [2022-11-21 17:03:30,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2022-11-21 17:03:30,525 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:03:30,525 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:03:30,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f7208a-d7dd-483b-b391-2dc9a126dad9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 17:03:30,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f7208a-d7dd-483b-b391-2dc9a126dad9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:03:30,726 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:03:30,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:03:30,727 INFO L85 PathProgramCache]: Analyzing trace with hash 852708963, now seen corresponding path program 1 times [2022-11-21 17:03:30,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:03:30,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106197088] [2022-11-21 17:03:30,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:03:30,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:03:30,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:03:32,971 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 361 proven. 113 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-11-21 17:03:32,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:03:32,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106197088] [2022-11-21 17:03:32,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106197088] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:03:32,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828545518] [2022-11-21 17:03:32,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:03:32,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:03:32,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f7208a-d7dd-483b-b391-2dc9a126dad9/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:03:32,974 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f7208a-d7dd-483b-b391-2dc9a126dad9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:03:33,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f7208a-d7dd-483b-b391-2dc9a126dad9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 17:03:33,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:03:33,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 17:03:33,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:03:34,188 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 361 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-11-21 17:03:34,189 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:03:34,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828545518] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:03:34,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:03:34,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-11-21 17:03:34,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807601051] [2022-11-21 17:03:34,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:03:34,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:03:34,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:03:34,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:03:34,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-21 17:03:34,192 INFO L87 Difference]: Start difference. First operand 102688 states and 108597 transitions. Second operand has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 2 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:38,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:03:38,784 INFO L93 Difference]: Finished difference Result 195936 states and 207573 transitions. [2022-11-21 17:03:38,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:03:38,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 2 states have internal predecessors, (337), 0 states have call successors, (0), 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 510 [2022-11-21 17:03:38,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:03:38,900 INFO L225 Difference]: With dead ends: 195936 [2022-11-21 17:03:38,900 INFO L226 Difference]: Without dead ends: 105846 [2022-11-21 17:03:38,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 509 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-21 17:03:38,937 INFO L413 NwaCegarLoop]: 991 mSDtfsCounter, 680 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2430 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 2538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-21 17:03:38,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [680 Valid, 1120 Invalid, 2538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2430 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-21 17:03:39,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105846 states. [2022-11-21 17:03:40,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105846 to 105837. [2022-11-21 17:03:40,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105837 states, 105836 states have (on average 1.0517404285876262) internal successors, (111312), 105836 states have internal predecessors, (111312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:40,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105837 states to 105837 states and 111312 transitions. [2022-11-21 17:03:40,706 INFO L78 Accepts]: Start accepts. Automaton has 105837 states and 111312 transitions. Word has length 510 [2022-11-21 17:03:40,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:03:40,707 INFO L495 AbstractCegarLoop]: Abstraction has 105837 states and 111312 transitions. [2022-11-21 17:03:40,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 2 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:40,707 INFO L276 IsEmpty]: Start isEmpty. Operand 105837 states and 111312 transitions. [2022-11-21 17:03:40,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2022-11-21 17:03:40,719 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:03:40,720 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:03:40,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f7208a-d7dd-483b-b391-2dc9a126dad9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 17:03:40,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99f7208a-d7dd-483b-b391-2dc9a126dad9/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-21 17:03:40,926 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:03:40,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:03:40,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1245832051, now seen corresponding path program 1 times [2022-11-21 17:03:40,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:03:40,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199821302] [2022-11-21 17:03:40,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:03:40,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:03:41,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:03:41,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1066 backedges. 309 proven. 0 refuted. 0 times theorem prover too weak. 757 trivial. 0 not checked. [2022-11-21 17:03:41,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:03:41,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199821302] [2022-11-21 17:03:41,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199821302] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:03:41,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:03:41,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:03:41,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83432049] [2022-11-21 17:03:41,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:03:41,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:03:41,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:03:41,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:03:41,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:03:41,272 INFO L87 Difference]: Start difference. First operand 105837 states and 111312 transitions. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 2 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:44,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:03:44,671 INFO L93 Difference]: Finished difference Result 196696 states and 207192 transitions. [2022-11-21 17:03:44,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:03:44,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 2 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 549 [2022-11-21 17:03:44,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:03:44,773 INFO L225 Difference]: With dead ends: 196696 [2022-11-21 17:03:44,773 INFO L226 Difference]: Without dead ends: 105034 [2022-11-21 17:03:44,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:03:44,800 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 1557 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1446 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1557 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 1458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-21 17:03:44,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1557 Valid, 275 Invalid, 1458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1446 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-21 17:03:44,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105034 states. [2022-11-21 17:03:46,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105034 to 105033. [2022-11-21 17:03:46,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105033 states, 105032 states have (on average 1.0504417701271993) internal successors, (110330), 105032 states have internal predecessors, (110330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:46,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105033 states to 105033 states and 110330 transitions. [2022-11-21 17:03:46,233 INFO L78 Accepts]: Start accepts. Automaton has 105033 states and 110330 transitions. Word has length 549 [2022-11-21 17:03:46,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:03:46,234 INFO L495 AbstractCegarLoop]: Abstraction has 105033 states and 110330 transitions. [2022-11-21 17:03:46,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 2 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:46,235 INFO L276 IsEmpty]: Start isEmpty. Operand 105033 states and 110330 transitions. [2022-11-21 17:03:46,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 564 [2022-11-21 17:03:46,255 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:03:46,255 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:03:46,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-21 17:03:46,256 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:03:46,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:03:46,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1654894083, now seen corresponding path program 1 times [2022-11-21 17:03:46,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:03:46,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646894356] [2022-11-21 17:03:46,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:03:46,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:03:46,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:03:47,548 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 560 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-11-21 17:03:47,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:03:47,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646894356] [2022-11-21 17:03:47,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646894356] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:03:47,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:03:47,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:03:47,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124384817] [2022-11-21 17:03:47,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:03:47,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:03:47,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:03:47,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:03:47,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:03:47,551 INFO L87 Difference]: Start difference. First operand 105033 states and 110330 transitions. Second operand has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:52,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:03:52,038 INFO L93 Difference]: Finished difference Result 196682 states and 207027 transitions. [2022-11-21 17:03:52,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:03:52,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 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 563 [2022-11-21 17:03:52,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:03:52,163 INFO L225 Difference]: With dead ends: 196682 [2022-11-21 17:03:52,163 INFO L226 Difference]: Without dead ends: 105824 [2022-11-21 17:03:52,197 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 [2022-11-21 17:03:52,198 INFO L413 NwaCegarLoop]: 1703 mSDtfsCounter, 609 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 2415 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 1827 SdHoareTripleChecker+Invalid, 2431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-21 17:03:52,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [609 Valid, 1827 Invalid, 2431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2415 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-21 17:03:52,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105824 states. [2022-11-21 17:03:53,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105824 to 105821. [2022-11-21 17:03:53,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105821 states, 105820 states have (on average 1.0503213003213003) internal successors, (111145), 105820 states have internal predecessors, (111145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:53,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105821 states to 105821 states and 111145 transitions. [2022-11-21 17:03:53,429 INFO L78 Accepts]: Start accepts. Automaton has 105821 states and 111145 transitions. Word has length 563 [2022-11-21 17:03:53,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:03:53,429 INFO L495 AbstractCegarLoop]: Abstraction has 105821 states and 111145 transitions. [2022-11-21 17:03:53,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:03:53,430 INFO L276 IsEmpty]: Start isEmpty. Operand 105821 states and 111145 transitions. [2022-11-21 17:03:53,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2022-11-21 17:03:53,442 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:03:53,442 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:03:53,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-21 17:03:53,442 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:03:53,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:03:53,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1530728712, now seen corresponding path program 1 times [2022-11-21 17:03:53,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:03:53,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609590170] [2022-11-21 17:03:53,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:03:53,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:03:53,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:03:54,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1066 backedges. 771 proven. 0 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2022-11-21 17:03:54,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:03:54,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609590170] [2022-11-21 17:03:54,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609590170] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:03:54,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:03:54,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:03:54,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254185172] [2022-11-21 17:03:54,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:03:54,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:03:54,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:03:54,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:03:54,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:03:54,549 INFO L87 Difference]: Start difference. First operand 105821 states and 111145 transitions. Second operand has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:04:00,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:04:00,378 INFO L93 Difference]: Finished difference Result 233707 states and 246446 transitions. [2022-11-21 17:04:00,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:04:00,379 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 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 594 [2022-11-21 17:04:00,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:04:00,525 INFO L225 Difference]: With dead ends: 233707 [2022-11-21 17:04:00,525 INFO L226 Difference]: Without dead ends: 142061 [2022-11-21 17:04:00,568 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 [2022-11-21 17:04:00,568 INFO L413 NwaCegarLoop]: 585 mSDtfsCounter, 949 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 2399 mSolverCounterSat, 850 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 3249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 850 IncrementalHoareTripleChecker+Valid, 2399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-21 17:04:00,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [949 Valid, 661 Invalid, 3249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [850 Valid, 2399 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-21 17:04:00,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142061 states.