./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_92128a90-6b35-441c-bcd2-e74b731e3307/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92128a90-6b35-441c-bcd2-e74b731e3307/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92128a90-6b35-441c-bcd2-e74b731e3307/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92128a90-6b35-441c-bcd2-e74b731e3307/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92128a90-6b35-441c-bcd2-e74b731e3307/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92128a90-6b35-441c-bcd2-e74b731e3307/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1bb463b167b254c80aafe9ad09b54a56308dc50dcf4a4adbb2aa58670e8927d0 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 18:47:28,687 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:47:28,691 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:47:28,721 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:47:28,721 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:47:28,722 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:47:28,724 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:47:28,726 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:47:28,728 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:47:28,730 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:47:28,731 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:47:28,732 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:47:28,733 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:47:28,734 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:47:28,736 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:47:28,737 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:47:28,739 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:47:28,740 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:47:28,742 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:47:28,745 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:47:28,747 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:47:28,748 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:47:28,750 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:47:28,751 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:47:28,757 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:47:28,757 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:47:28,758 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:47:28,759 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:47:28,759 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:47:28,761 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:47:28,761 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:47:28,763 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:47:28,764 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:47:28,765 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:47:28,766 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:47:28,767 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:47:28,768 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:47:28,768 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:47:28,769 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:47:28,770 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:47:28,771 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:47:28,772 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92128a90-6b35-441c-bcd2-e74b731e3307/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 18:47:28,799 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:47:28,799 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:47:28,800 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:47:28,800 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:47:28,801 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:47:28,801 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:47:28,802 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:47:28,803 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:47:28,803 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:47:28,803 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:47:28,804 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:47:28,804 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:47:28,804 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:47:28,804 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:47:28,805 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:47:28,805 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:47:28,805 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:47:28,806 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:47:28,806 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:47:28,806 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:47:28,806 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:47:28,807 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:47:28,807 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:47:28,807 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:47:28,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:47:28,808 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:47:28,808 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:47:28,809 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:47:28,809 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:47:28,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:47:28,809 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:47:28,810 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:47:28,810 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:47:28,810 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_92128a90-6b35-441c-bcd2-e74b731e3307/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92128a90-6b35-441c-bcd2-e74b731e3307/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1bb463b167b254c80aafe9ad09b54a56308dc50dcf4a4adbb2aa58670e8927d0 [2022-11-18 18:47:29,159 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:47:29,186 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:47:29,190 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:47:29,192 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:47:29,193 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:47:29,194 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92128a90-6b35-441c-bcd2-e74b731e3307/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c [2022-11-18 18:47:29,289 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92128a90-6b35-441c-bcd2-e74b731e3307/bin/uautomizer-TMbwUNV5ro/data/45d7dfd0e/73b5ad53cb624efb9a332db1737c0f2c/FLAGf2afb1840 [2022-11-18 18:47:29,945 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:47:29,945 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92128a90-6b35-441c-bcd2-e74b731e3307/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c [2022-11-18 18:47:29,959 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92128a90-6b35-441c-bcd2-e74b731e3307/bin/uautomizer-TMbwUNV5ro/data/45d7dfd0e/73b5ad53cb624efb9a332db1737c0f2c/FLAGf2afb1840 [2022-11-18 18:47:30,225 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92128a90-6b35-441c-bcd2-e74b731e3307/bin/uautomizer-TMbwUNV5ro/data/45d7dfd0e/73b5ad53cb624efb9a332db1737c0f2c [2022-11-18 18:47:30,228 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:47:30,229 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:47:30,231 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:47:30,232 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:47:30,235 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:47:30,236 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:47:30" (1/1) ... [2022-11-18 18:47:30,238 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79850dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:30, skipping insertion in model container [2022-11-18 18:47:30,238 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:47:30" (1/1) ... [2022-11-18 18:47:30,246 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:47:30,314 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:47:30,743 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92128a90-6b35-441c-bcd2-e74b731e3307/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c[30998,31011] [2022-11-18 18:47:30,748 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:47:30,759 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:47:30,861 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92128a90-6b35-441c-bcd2-e74b731e3307/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c[30998,31011] [2022-11-18 18:47:30,862 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:47:30,881 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:47:30,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:30 WrapperNode [2022-11-18 18:47:30,882 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:47:30,883 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:47:30,884 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:47:30,884 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:47:30,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:30" (1/1) ... [2022-11-18 18:47:30,912 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:30" (1/1) ... [2022-11-18 18:47:31,021 INFO L138 Inliner]: procedures = 23, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 959 [2022-11-18 18:47:31,021 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:47:31,022 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:47:31,023 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:47:31,023 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:47:31,034 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:30" (1/1) ... [2022-11-18 18:47:31,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:30" (1/1) ... [2022-11-18 18:47:31,048 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:30" (1/1) ... [2022-11-18 18:47:31,048 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:30" (1/1) ... [2022-11-18 18:47:31,078 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:30" (1/1) ... [2022-11-18 18:47:31,090 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:30" (1/1) ... [2022-11-18 18:47:31,095 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:30" (1/1) ... [2022-11-18 18:47:31,099 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:30" (1/1) ... [2022-11-18 18:47:31,105 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:47:31,106 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:47:31,106 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:47:31,107 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:47:31,121 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:30" (1/1) ... [2022-11-18 18:47:31,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:47:31,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92128a90-6b35-441c-bcd2-e74b731e3307/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:47:31,183 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92128a90-6b35-441c-bcd2-e74b731e3307/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:47:31,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92128a90-6b35-441c-bcd2-e74b731e3307/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:47:31,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:47:31,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:47:31,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:47:31,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:47:31,428 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:47:31,430 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:47:32,987 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:47:33,015 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:47:33,016 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 18:47:33,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:47:33 BoogieIcfgContainer [2022-11-18 18:47:33,021 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:47:33,029 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:47:33,029 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:47:33,034 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:47:33,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:47:30" (1/3) ... [2022-11-18 18:47:33,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74a2b77e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:47:33, skipping insertion in model container [2022-11-18 18:47:33,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:47:30" (2/3) ... [2022-11-18 18:47:33,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74a2b77e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:47:33, skipping insertion in model container [2022-11-18 18:47:33,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:47:33" (3/3) ... [2022-11-18 18:47:33,041 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c [2022-11-18 18:47:33,066 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:47:33,067 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 18:47:33,139 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:47:33,147 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;@6f947b61, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:47:33,147 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 18:47:33,154 INFO L276 IsEmpty]: Start isEmpty. Operand has 300 states, 298 states have (on average 1.832214765100671) internal successors, (546), 299 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:33,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-18 18:47:33,172 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:47:33,173 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:47:33,174 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:47:33,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:47:33,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1955462636, now seen corresponding path program 1 times [2022-11-18 18:47:33,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:47:33,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665553992] [2022-11-18 18:47:33,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:47:33,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:47:33,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:47:33,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:47:33,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:47:33,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665553992] [2022-11-18 18:47:33,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665553992] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:47:33,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:47:33,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:47:33,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044310106] [2022-11-18 18:47:33,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:47:33,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 18:47:33,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:47:33,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 18:47:33,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 18:47:33,705 INFO L87 Difference]: Start difference. First operand has 300 states, 298 states have (on average 1.832214765100671) internal successors, (546), 299 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:33,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:47:33,761 INFO L93 Difference]: Finished difference Result 405 states and 730 transitions. [2022-11-18 18:47:33,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 18:47:33,764 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-18 18:47:33,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:47:33,779 INFO L225 Difference]: With dead ends: 405 [2022-11-18 18:47:33,780 INFO L226 Difference]: Without dead ends: 296 [2022-11-18 18:47:33,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 18:47:33,788 INFO L413 NwaCegarLoop]: 543 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:47:33,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:47:33,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-11-18 18:47:33,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2022-11-18 18:47:33,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 295 states have (on average 1.8271186440677967) internal successors, (539), 295 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:33,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 539 transitions. [2022-11-18 18:47:33,876 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 539 transitions. Word has length 77 [2022-11-18 18:47:33,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:47:33,877 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 539 transitions. [2022-11-18 18:47:33,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:33,878 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 539 transitions. [2022-11-18 18:47:33,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-18 18:47:33,882 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:47:33,882 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:47:33,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:47:33,883 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:47:33,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:47:33,885 INFO L85 PathProgramCache]: Analyzing trace with hash -2089476142, now seen corresponding path program 1 times [2022-11-18 18:47:33,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:47:33,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234671997] [2022-11-18 18:47:33,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:47:33,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:47:33,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:47:34,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:47:34,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:47:34,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234671997] [2022-11-18 18:47:34,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234671997] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:47:34,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:47:34,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:47:34,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977162749] [2022-11-18 18:47:34,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:47:34,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:47:34,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:47:34,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:47:34,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:47:34,405 INFO L87 Difference]: Start difference. First operand 296 states and 539 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:34,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:47:34,620 INFO L93 Difference]: Finished difference Result 400 states and 720 transitions. [2022-11-18 18:47:34,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:47:34,621 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-18 18:47:34,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:47:34,630 INFO L225 Difference]: With dead ends: 400 [2022-11-18 18:47:34,630 INFO L226 Difference]: Without dead ends: 296 [2022-11-18 18:47:34,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:47:34,640 INFO L413 NwaCegarLoop]: 537 mSDtfsCounter, 3 mSDsluCounter, 1562 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2099 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:47:34,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2099 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:47:34,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-11-18 18:47:34,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2022-11-18 18:47:34,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 295 states have (on average 1.6711864406779662) internal successors, (493), 295 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:34,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 493 transitions. [2022-11-18 18:47:34,685 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 493 transitions. Word has length 77 [2022-11-18 18:47:34,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:47:34,685 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 493 transitions. [2022-11-18 18:47:34,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:34,686 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 493 transitions. [2022-11-18 18:47:34,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-18 18:47:34,691 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:47:34,691 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:47:34,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:47:34,692 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:47:34,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:47:34,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1985083144, now seen corresponding path program 1 times [2022-11-18 18:47:34,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:47:34,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199897559] [2022-11-18 18:47:34,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:47:34,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:47:34,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:47:35,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:47:35,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:47:35,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199897559] [2022-11-18 18:47:35,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199897559] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:47:35,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:47:35,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:47:35,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488468686] [2022-11-18 18:47:35,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:47:35,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:47:35,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:47:35,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:47:35,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:47:35,134 INFO L87 Difference]: Start difference. First operand 296 states and 493 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:35,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:47:35,199 INFO L93 Difference]: Finished difference Result 484 states and 825 transitions. [2022-11-18 18:47:35,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:47:35,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-11-18 18:47:35,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:47:35,203 INFO L225 Difference]: With dead ends: 484 [2022-11-18 18:47:35,204 INFO L226 Difference]: Without dead ends: 384 [2022-11-18 18:47:35,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:47:35,206 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 147 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:47:35,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 926 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:47:35,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2022-11-18 18:47:35,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 382. [2022-11-18 18:47:35,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 1.68503937007874) internal successors, (642), 381 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:35,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 642 transitions. [2022-11-18 18:47:35,230 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 642 transitions. Word has length 122 [2022-11-18 18:47:35,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:47:35,231 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 642 transitions. [2022-11-18 18:47:35,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:35,232 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 642 transitions. [2022-11-18 18:47:35,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-18 18:47:35,237 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:47:35,237 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:47:35,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 18:47:35,238 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:47:35,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:47:35,239 INFO L85 PathProgramCache]: Analyzing trace with hash -387323276, now seen corresponding path program 1 times [2022-11-18 18:47:35,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:47:35,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420689783] [2022-11-18 18:47:35,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:47:35,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:47:35,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:47:35,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:47:35,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:47:35,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420689783] [2022-11-18 18:47:35,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420689783] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:47:35,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:47:35,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:47:35,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117515853] [2022-11-18 18:47:35,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:47:35,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:47:35,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:47:35,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:47:35,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:47:35,429 INFO L87 Difference]: Start difference. First operand 382 states and 642 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:35,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:47:35,503 INFO L93 Difference]: Finished difference Result 734 states and 1258 transitions. [2022-11-18 18:47:35,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:47:35,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2022-11-18 18:47:35,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:47:35,509 INFO L225 Difference]: With dead ends: 734 [2022-11-18 18:47:35,509 INFO L226 Difference]: Without dead ends: 548 [2022-11-18 18:47:35,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:47:35,512 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 148 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 938 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:47:35,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 938 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:47:35,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2022-11-18 18:47:35,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 546. [2022-11-18 18:47:35,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 545 states have (on average 1.7045871559633028) internal successors, (929), 545 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:35,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 929 transitions. [2022-11-18 18:47:35,543 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 929 transitions. Word has length 125 [2022-11-18 18:47:35,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:47:35,544 INFO L495 AbstractCegarLoop]: Abstraction has 546 states and 929 transitions. [2022-11-18 18:47:35,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:35,545 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 929 transitions. [2022-11-18 18:47:35,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-18 18:47:35,553 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:47:35,553 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:47:35,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 18:47:35,554 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:47:35,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:47:35,556 INFO L85 PathProgramCache]: Analyzing trace with hash 274346619, now seen corresponding path program 1 times [2022-11-18 18:47:35,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:47:35,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978960595] [2022-11-18 18:47:35,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:47:35,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:47:35,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:47:35,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:47:35,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:47:35,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978960595] [2022-11-18 18:47:35,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978960595] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:47:35,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:47:35,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:47:35,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601394027] [2022-11-18 18:47:35,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:47:35,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:47:35,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:47:35,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:47:35,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:47:35,814 INFO L87 Difference]: Start difference. First operand 546 states and 929 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:35,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:47:35,864 INFO L93 Difference]: Finished difference Result 1206 states and 2083 transitions. [2022-11-18 18:47:35,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:47:35,865 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 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 128 [2022-11-18 18:47:35,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:47:35,872 INFO L225 Difference]: With dead ends: 1206 [2022-11-18 18:47:35,873 INFO L226 Difference]: Without dead ends: 856 [2022-11-18 18:47:35,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:47:35,882 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 141 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 939 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:47:35,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 939 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:47:35,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2022-11-18 18:47:35,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 854. [2022-11-18 18:47:35,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 853 states have (on average 1.7174677608440798) internal successors, (1465), 853 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:35,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1465 transitions. [2022-11-18 18:47:35,930 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1465 transitions. Word has length 128 [2022-11-18 18:47:35,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:47:35,932 INFO L495 AbstractCegarLoop]: Abstraction has 854 states and 1465 transitions. [2022-11-18 18:47:35,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:35,936 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1465 transitions. [2022-11-18 18:47:35,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-18 18:47:35,942 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:47:35,942 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:47:35,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 18:47:35,943 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:47:35,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:47:35,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1678930553, now seen corresponding path program 1 times [2022-11-18 18:47:35,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:47:35,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115408445] [2022-11-18 18:47:35,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:47:35,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:47:36,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:47:36,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:47:36,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:47:36,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115408445] [2022-11-18 18:47:36,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115408445] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:47:36,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:47:36,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:47:36,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225447033] [2022-11-18 18:47:36,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:47:36,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:47:36,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:47:36,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:47:36,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:47:36,149 INFO L87 Difference]: Start difference. First operand 854 states and 1465 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:36,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:47:36,226 INFO L93 Difference]: Finished difference Result 2090 states and 3619 transitions. [2022-11-18 18:47:36,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:47:36,227 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2022-11-18 18:47:36,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:47:36,236 INFO L225 Difference]: With dead ends: 2090 [2022-11-18 18:47:36,237 INFO L226 Difference]: Without dead ends: 1432 [2022-11-18 18:47:36,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:47:36,242 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 134 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 940 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:47:36,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 940 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:47:36,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2022-11-18 18:47:36,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1430. [2022-11-18 18:47:36,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1430 states, 1429 states have (on average 1.722183344996501) internal successors, (2461), 1429 states have internal predecessors, (2461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:36,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 2461 transitions. [2022-11-18 18:47:36,326 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 2461 transitions. Word has length 131 [2022-11-18 18:47:36,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:47:36,327 INFO L495 AbstractCegarLoop]: Abstraction has 1430 states and 2461 transitions. [2022-11-18 18:47:36,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:36,327 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 2461 transitions. [2022-11-18 18:47:36,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-18 18:47:36,335 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:47:36,336 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:47:36,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 18:47:36,336 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:47:36,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:47:36,337 INFO L85 PathProgramCache]: Analyzing trace with hash -904041234, now seen corresponding path program 1 times [2022-11-18 18:47:36,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:47:36,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55156689] [2022-11-18 18:47:36,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:47:36,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:47:36,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:47:36,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:47:36,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:47:36,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55156689] [2022-11-18 18:47:36,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55156689] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:47:36,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:47:36,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 18:47:36,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964985145] [2022-11-18 18:47:36,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:47:36,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:47:36,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:47:36,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:47:36,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:47:36,629 INFO L87 Difference]: Start difference. First operand 1430 states and 2461 transitions. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:37,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:47:37,216 INFO L93 Difference]: Finished difference Result 7238 states and 12653 transitions. [2022-11-18 18:47:37,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:47:37,217 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2022-11-18 18:47:37,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:47:37,246 INFO L225 Difference]: With dead ends: 7238 [2022-11-18 18:47:37,246 INFO L226 Difference]: Without dead ends: 6004 [2022-11-18 18:47:37,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:47:37,251 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 1397 mSDsluCounter, 3354 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1397 SdHoareTripleChecker+Valid, 3839 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:47:37,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1397 Valid, 3839 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 18:47:37,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6004 states. [2022-11-18 18:47:37,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6004 to 2578. [2022-11-18 18:47:37,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2578 states, 2577 states have (on average 1.7283663174233606) internal successors, (4454), 2577 states have internal predecessors, (4454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:37,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2578 states to 2578 states and 4454 transitions. [2022-11-18 18:47:37,522 INFO L78 Accepts]: Start accepts. Automaton has 2578 states and 4454 transitions. Word has length 134 [2022-11-18 18:47:37,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:47:37,522 INFO L495 AbstractCegarLoop]: Abstraction has 2578 states and 4454 transitions. [2022-11-18 18:47:37,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:37,523 INFO L276 IsEmpty]: Start isEmpty. Operand 2578 states and 4454 transitions. [2022-11-18 18:47:37,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-18 18:47:37,527 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:47:37,527 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:47:37,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 18:47:37,527 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:47:37,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:47:37,528 INFO L85 PathProgramCache]: Analyzing trace with hash -55113831, now seen corresponding path program 1 times [2022-11-18 18:47:37,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:47:37,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998173902] [2022-11-18 18:47:37,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:47:37,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:47:37,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:47:37,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:47:37,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:47:37,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998173902] [2022-11-18 18:47:37,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998173902] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:47:37,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:47:37,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:47:37,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337662082] [2022-11-18 18:47:37,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:47:37,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:47:37,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:47:37,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:47:37,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:47:37,710 INFO L87 Difference]: Start difference. First operand 2578 states and 4454 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:38,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:47:38,077 INFO L93 Difference]: Finished difference Result 7484 states and 13044 transitions. [2022-11-18 18:47:38,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:47:38,077 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 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 135 [2022-11-18 18:47:38,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:47:38,101 INFO L225 Difference]: With dead ends: 7484 [2022-11-18 18:47:38,101 INFO L226 Difference]: Without dead ends: 5102 [2022-11-18 18:47:38,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:47:38,106 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 510 mSDsluCounter, 1085 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 1573 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:47:38,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [510 Valid, 1573 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:47:38,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5102 states. [2022-11-18 18:47:38,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5102 to 3823. [2022-11-18 18:47:38,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3823 states, 3822 states have (on average 1.7318158032443747) internal successors, (6619), 3822 states have internal predecessors, (6619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:38,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3823 states to 3823 states and 6619 transitions. [2022-11-18 18:47:38,446 INFO L78 Accepts]: Start accepts. Automaton has 3823 states and 6619 transitions. Word has length 135 [2022-11-18 18:47:38,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:47:38,446 INFO L495 AbstractCegarLoop]: Abstraction has 3823 states and 6619 transitions. [2022-11-18 18:47:38,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:38,447 INFO L276 IsEmpty]: Start isEmpty. Operand 3823 states and 6619 transitions. [2022-11-18 18:47:38,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-18 18:47:38,453 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:47:38,453 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:47:38,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 18:47:38,454 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:47:38,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:47:38,455 INFO L85 PathProgramCache]: Analyzing trace with hash -979745861, now seen corresponding path program 1 times [2022-11-18 18:47:38,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:47:38,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905241903] [2022-11-18 18:47:38,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:47:38,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:47:38,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:47:38,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:47:38,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:47:38,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905241903] [2022-11-18 18:47:38,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905241903] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:47:38,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:47:38,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:47:38,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022319574] [2022-11-18 18:47:38,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:47:38,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:47:38,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:47:38,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:47:38,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:47:38,615 INFO L87 Difference]: Start difference. First operand 3823 states and 6619 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:38,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:47:38,934 INFO L93 Difference]: Finished difference Result 7409 states and 12838 transitions. [2022-11-18 18:47:38,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:47:38,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2022-11-18 18:47:38,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:47:38,960 INFO L225 Difference]: With dead ends: 7409 [2022-11-18 18:47:38,960 INFO L226 Difference]: Without dead ends: 5415 [2022-11-18 18:47:38,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:47:38,965 INFO L413 NwaCegarLoop]: 598 mSDtfsCounter, 149 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 1060 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:47:38,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 1060 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:47:38,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5415 states. [2022-11-18 18:47:39,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5415 to 5413. [2022-11-18 18:47:39,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5413 states, 5412 states have (on average 1.7235772357723578) internal successors, (9328), 5412 states have internal predecessors, (9328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:39,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5413 states to 5413 states and 9328 transitions. [2022-11-18 18:47:39,361 INFO L78 Accepts]: Start accepts. Automaton has 5413 states and 9328 transitions. Word has length 136 [2022-11-18 18:47:39,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:47:39,362 INFO L495 AbstractCegarLoop]: Abstraction has 5413 states and 9328 transitions. [2022-11-18 18:47:39,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:39,363 INFO L276 IsEmpty]: Start isEmpty. Operand 5413 states and 9328 transitions. [2022-11-18 18:47:39,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-18 18:47:39,366 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:47:39,367 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:47:39,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 18:47:39,367 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:47:39,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:47:39,368 INFO L85 PathProgramCache]: Analyzing trace with hash -993525919, now seen corresponding path program 1 times [2022-11-18 18:47:39,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:47:39,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626421115] [2022-11-18 18:47:39,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:47:39,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:47:39,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:47:39,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:47:39,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:47:39,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626421115] [2022-11-18 18:47:39,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626421115] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:47:39,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:47:39,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:47:39,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806889262] [2022-11-18 18:47:39,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:47:39,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:47:39,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:47:39,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:47:39,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:47:39,500 INFO L87 Difference]: Start difference. First operand 5413 states and 9328 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:39,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:47:39,983 INFO L93 Difference]: Finished difference Result 10473 states and 18062 transitions. [2022-11-18 18:47:39,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:47:39,984 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2022-11-18 18:47:39,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:47:40,038 INFO L225 Difference]: With dead ends: 10473 [2022-11-18 18:47:40,038 INFO L226 Difference]: Without dead ends: 7639 [2022-11-18 18:47:40,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:47:40,046 INFO L413 NwaCegarLoop]: 582 mSDtfsCounter, 142 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 1045 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:47:40,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 1045 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:47:40,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7639 states. [2022-11-18 18:47:40,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7639 to 7637. [2022-11-18 18:47:40,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7637 states, 7636 states have (on average 1.714772132006286) internal successors, (13094), 7636 states have internal predecessors, (13094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:40,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7637 states to 7637 states and 13094 transitions. [2022-11-18 18:47:40,720 INFO L78 Accepts]: Start accepts. Automaton has 7637 states and 13094 transitions. Word has length 136 [2022-11-18 18:47:40,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:47:40,721 INFO L495 AbstractCegarLoop]: Abstraction has 7637 states and 13094 transitions. [2022-11-18 18:47:40,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:40,722 INFO L276 IsEmpty]: Start isEmpty. Operand 7637 states and 13094 transitions. [2022-11-18 18:47:40,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-18 18:47:40,725 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:47:40,726 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:47:40,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 18:47:40,726 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:47:40,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:47:40,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1484688773, now seen corresponding path program 1 times [2022-11-18 18:47:40,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:47:40,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011806994] [2022-11-18 18:47:40,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:47:40,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:47:40,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:47:40,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:47:40,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:47:40,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011806994] [2022-11-18 18:47:40,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011806994] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:47:40,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:47:40,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:47:40,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156719171] [2022-11-18 18:47:40,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:47:40,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:47:40,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:47:40,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:47:40,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:47:40,902 INFO L87 Difference]: Start difference. First operand 7637 states and 13094 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:41,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:47:41,630 INFO L93 Difference]: Finished difference Result 14737 states and 25278 transitions. [2022-11-18 18:47:41,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:47:41,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2022-11-18 18:47:41,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:47:41,661 INFO L225 Difference]: With dead ends: 14737 [2022-11-18 18:47:41,661 INFO L226 Difference]: Without dead ends: 10721 [2022-11-18 18:47:41,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:47:41,669 INFO L413 NwaCegarLoop]: 566 mSDtfsCounter, 135 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 1030 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:47:41,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 1030 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:47:41,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10721 states. [2022-11-18 18:47:42,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10721 to 10719. [2022-11-18 18:47:42,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10719 states, 10718 states have (on average 1.70460906885613) internal successors, (18270), 10718 states have internal predecessors, (18270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:42,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10719 states to 10719 states and 18270 transitions. [2022-11-18 18:47:42,475 INFO L78 Accepts]: Start accepts. Automaton has 10719 states and 18270 transitions. Word has length 136 [2022-11-18 18:47:42,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:47:42,476 INFO L495 AbstractCegarLoop]: Abstraction has 10719 states and 18270 transitions. [2022-11-18 18:47:42,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:42,476 INFO L276 IsEmpty]: Start isEmpty. Operand 10719 states and 18270 transitions. [2022-11-18 18:47:42,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-18 18:47:42,479 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:47:42,479 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:47:42,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 18:47:42,480 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:47:42,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:47:42,481 INFO L85 PathProgramCache]: Analyzing trace with hash 660836229, now seen corresponding path program 1 times [2022-11-18 18:47:42,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:47:42,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850755141] [2022-11-18 18:47:42,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:47:42,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:47:42,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:47:42,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:47:42,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:47:42,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850755141] [2022-11-18 18:47:42,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850755141] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:47:42,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:47:42,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:47:42,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281664620] [2022-11-18 18:47:42,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:47:42,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:47:42,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:47:42,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:47:42,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:47:42,672 INFO L87 Difference]: Start difference. First operand 10719 states and 18270 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 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) [2022-11-18 18:47:44,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:47:44,327 INFO L93 Difference]: Finished difference Result 34764 states and 59349 transitions. [2022-11-18 18:47:44,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:47:44,328 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 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 [2022-11-18 18:47:44,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:47:44,393 INFO L225 Difference]: With dead ends: 34764 [2022-11-18 18:47:44,393 INFO L226 Difference]: Without dead ends: 24351 [2022-11-18 18:47:44,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:47:44,408 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 509 mSDsluCounter, 1087 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 1569 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:47:44,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [509 Valid, 1569 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:47:44,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24351 states. [2022-11-18 18:47:45,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24351 to 17481. [2022-11-18 18:47:45,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17481 states, 17480 states have (on average 1.6966819221967964) internal successors, (29658), 17480 states have internal predecessors, (29658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:45,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17481 states to 17481 states and 29658 transitions. [2022-11-18 18:47:45,750 INFO L78 Accepts]: Start accepts. Automaton has 17481 states and 29658 transitions. Word has length 136 [2022-11-18 18:47:45,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:47:45,750 INFO L495 AbstractCegarLoop]: Abstraction has 17481 states and 29658 transitions. [2022-11-18 18:47:45,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 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) [2022-11-18 18:47:45,751 INFO L276 IsEmpty]: Start isEmpty. Operand 17481 states and 29658 transitions. [2022-11-18 18:47:45,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-18 18:47:45,753 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:47:45,753 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:47:45,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 18:47:45,754 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:47:45,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:47:45,755 INFO L85 PathProgramCache]: Analyzing trace with hash -375568863, now seen corresponding path program 1 times [2022-11-18 18:47:45,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:47:45,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417655808] [2022-11-18 18:47:45,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:47:45,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:47:45,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:47:45,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:47:45,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:47:45,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417655808] [2022-11-18 18:47:45,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417655808] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:47:45,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:47:45,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:47:45,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192278596] [2022-11-18 18:47:45,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:47:45,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:47:45,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:47:45,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:47:45,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:47:45,882 INFO L87 Difference]: Start difference. First operand 17481 states and 29658 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:47,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:47:47,714 INFO L93 Difference]: Finished difference Result 38978 states and 66415 transitions. [2022-11-18 18:47:47,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:47:47,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2022-11-18 18:47:47,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:47:47,814 INFO L225 Difference]: With dead ends: 38978 [2022-11-18 18:47:47,814 INFO L226 Difference]: Without dead ends: 26602 [2022-11-18 18:47:47,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:47:47,843 INFO L413 NwaCegarLoop]: 624 mSDtfsCounter, 156 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 1085 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:47:47,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 1085 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:47:47,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26602 states. [2022-11-18 18:47:49,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26602 to 26600. [2022-11-18 18:47:49,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26600 states, 26599 states have (on average 1.6881085755103575) internal successors, (44902), 26599 states have internal predecessors, (44902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:49,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26600 states to 26600 states and 44902 transitions. [2022-11-18 18:47:49,782 INFO L78 Accepts]: Start accepts. Automaton has 26600 states and 44902 transitions. Word has length 136 [2022-11-18 18:47:49,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:47:49,783 INFO L495 AbstractCegarLoop]: Abstraction has 26600 states and 44902 transitions. [2022-11-18 18:47:49,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:49,783 INFO L276 IsEmpty]: Start isEmpty. Operand 26600 states and 44902 transitions. [2022-11-18 18:47:49,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-18 18:47:49,785 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:47:49,786 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:47:49,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 18:47:49,786 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:47:49,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:47:49,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1549455952, now seen corresponding path program 1 times [2022-11-18 18:47:49,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:47:49,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569567830] [2022-11-18 18:47:49,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:47:49,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:47:49,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:47:49,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:47:49,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:47:49,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569567830] [2022-11-18 18:47:49,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569567830] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:47:49,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:47:49,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:47:49,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944891473] [2022-11-18 18:47:49,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:47:49,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:47:49,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:47:49,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:47:49,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:47:49,966 INFO L87 Difference]: Start difference. First operand 26600 states and 44902 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:53,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:47:53,266 INFO L93 Difference]: Finished difference Result 86940 states and 146868 transitions. [2022-11-18 18:47:53,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:47:53,267 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 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 137 [2022-11-18 18:47:53,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:47:53,456 INFO L225 Difference]: With dead ends: 86940 [2022-11-18 18:47:53,456 INFO L226 Difference]: Without dead ends: 60568 [2022-11-18 18:47:53,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:47:53,494 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 507 mSDsluCounter, 1089 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 1571 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:47:53,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 1571 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:47:53,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60568 states. [2022-11-18 18:47:55,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60568 to 43441. [2022-11-18 18:47:55,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43441 states, 43440 states have (on average 1.6784300184162062) internal successors, (72911), 43440 states have internal predecessors, (72911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:56,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43441 states to 43441 states and 72911 transitions. [2022-11-18 18:47:56,097 INFO L78 Accepts]: Start accepts. Automaton has 43441 states and 72911 transitions. Word has length 137 [2022-11-18 18:47:56,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:47:56,098 INFO L495 AbstractCegarLoop]: Abstraction has 43441 states and 72911 transitions. [2022-11-18 18:47:56,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:47:56,098 INFO L276 IsEmpty]: Start isEmpty. Operand 43441 states and 72911 transitions. [2022-11-18 18:47:56,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-18 18:47:56,100 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:47:56,100 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:47:56,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 18:47:56,101 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:47:56,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:47:56,102 INFO L85 PathProgramCache]: Analyzing trace with hash -799099364, now seen corresponding path program 1 times [2022-11-18 18:47:56,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:47:56,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800294752] [2022-11-18 18:47:56,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:47:56,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:47:56,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:47:56,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:47:56,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:47:56,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800294752] [2022-11-18 18:47:56,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800294752] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:47:56,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:47:56,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:47:56,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728501917] [2022-11-18 18:47:56,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:47:56,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:47:56,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:47:56,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:47:56,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:47:56,421 INFO L87 Difference]: Start difference. First operand 43441 states and 72911 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:00,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:48:00,888 INFO L93 Difference]: Finished difference Result 140394 states and 235818 transitions. [2022-11-18 18:48:00,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:48:00,888 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2022-11-18 18:48:00,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:48:01,077 INFO L225 Difference]: With dead ends: 140394 [2022-11-18 18:48:01,077 INFO L226 Difference]: Without dead ends: 97181 [2022-11-18 18:48:01,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:48:01,155 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 505 mSDsluCounter, 1091 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 1573 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:48:01,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [505 Valid, 1573 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:48:01,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97181 states. [2022-11-18 18:48:04,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97181 to 70086. [2022-11-18 18:48:04,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70086 states, 70085 states have (on average 1.6690589997859742) internal successors, (116976), 70085 states have internal predecessors, (116976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:05,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70086 states to 70086 states and 116976 transitions. [2022-11-18 18:48:05,147 INFO L78 Accepts]: Start accepts. Automaton has 70086 states and 116976 transitions. Word has length 138 [2022-11-18 18:48:05,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:48:05,148 INFO L495 AbstractCegarLoop]: Abstraction has 70086 states and 116976 transitions. [2022-11-18 18:48:05,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:05,148 INFO L276 IsEmpty]: Start isEmpty. Operand 70086 states and 116976 transitions. [2022-11-18 18:48:05,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-18 18:48:05,151 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:48:05,151 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:48:05,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 18:48:05,152 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:48:05,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:05,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1351493516, now seen corresponding path program 1 times [2022-11-18 18:48:05,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:05,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159827558] [2022-11-18 18:48:05,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:05,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:05,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:05,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:05,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:05,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159827558] [2022-11-18 18:48:05,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159827558] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:48:05,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:48:05,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 18:48:05,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588529986] [2022-11-18 18:48:05,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:48:05,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:48:05,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:05,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:48:05,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:48:05,835 INFO L87 Difference]: Start difference. First operand 70086 states and 116976 transitions. Second operand has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:09,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:48:09,534 INFO L93 Difference]: Finished difference Result 139946 states and 233587 transitions. [2022-11-18 18:48:09,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:48:09,534 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-11-18 18:48:09,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:48:09,665 INFO L225 Difference]: With dead ends: 139946 [2022-11-18 18:48:09,665 INFO L226 Difference]: Without dead ends: 70088 [2022-11-18 18:48:09,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:48:09,702 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 294 mSDsluCounter, 1812 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 2299 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:48:09,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 2299 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:48:09,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70088 states. [2022-11-18 18:48:13,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70088 to 70086. [2022-11-18 18:48:13,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70086 states, 70085 states have (on average 1.6601412570450167) internal successors, (116351), 70085 states have internal predecessors, (116351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:13,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70086 states to 70086 states and 116351 transitions. [2022-11-18 18:48:13,522 INFO L78 Accepts]: Start accepts. Automaton has 70086 states and 116351 transitions. Word has length 140 [2022-11-18 18:48:13,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:48:13,523 INFO L495 AbstractCegarLoop]: Abstraction has 70086 states and 116351 transitions. [2022-11-18 18:48:13,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:48:13,523 INFO L276 IsEmpty]: Start isEmpty. Operand 70086 states and 116351 transitions. [2022-11-18 18:48:13,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-18 18:48:13,525 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:48:13,525 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:48:13,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 18:48:13,526 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:48:13,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:13,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1927733203, now seen corresponding path program 1 times [2022-11-18 18:48:13,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:13,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803490211] [2022-11-18 18:48:13,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:13,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:13,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:13,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:13,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:13,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803490211] [2022-11-18 18:48:13,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803490211] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:48:13,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:48:13,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 18:48:13,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924320799] [2022-11-18 18:48:13,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:48:13,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:48:13,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:13,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:48:13,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:48:13,893 INFO L87 Difference]: Start difference. First operand 70086 states and 116351 transitions. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)