./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_741d8921-f621-447d-add6-a27ce2f90bec/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_741d8921-f621-447d-add6-a27ce2f90bec/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_741d8921-f621-447d-add6-a27ce2f90bec/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_741d8921-f621-447d-add6-a27ce2f90bec/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_741d8921-f621-447d-add6-a27ce2f90bec/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_741d8921-f621-447d-add6-a27ce2f90bec/bin/uautomizer-J5u9QxTXDZ --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 f4eb782e6042aea0609a33229d26d2fc0e173871777f83d353b448b155d9fa10 --- 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-dbf71c6-m [2022-10-17 10:28:20,007 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:28:20,010 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:28:20,076 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:28:20,077 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:28:20,083 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:28:20,086 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:28:20,093 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:28:20,096 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:28:20,103 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:28:20,104 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:28:20,108 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:28:20,108 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:28:20,111 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:28:20,114 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:28:20,117 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:28:20,119 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:28:20,120 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:28:20,123 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:28:20,132 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:28:20,135 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:28:20,137 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:28:20,141 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:28:20,143 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:28:20,155 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:28:20,156 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:28:20,157 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:28:20,159 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:28:20,160 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:28:20,163 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:28:20,164 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:28:20,165 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:28:20,168 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:28:20,169 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:28:20,171 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:28:20,172 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:28:20,172 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:28:20,173 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:28:20,173 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:28:20,175 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:28:20,176 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:28:20,177 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_741d8921-f621-447d-add6-a27ce2f90bec/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:28:20,227 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:28:20,228 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:28:20,229 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:28:20,229 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:28:20,230 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:28:20,231 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:28:20,231 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:28:20,232 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:28:20,232 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:28:20,233 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:28:20,234 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:28:20,234 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:28:20,235 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:28:20,235 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:28:20,235 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:28:20,236 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:28:20,236 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:28:20,236 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:28:20,237 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:28:20,237 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:28:20,237 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:28:20,238 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:28:20,238 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:28:20,239 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:28:20,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:28:20,239 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:28:20,240 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:28:20,240 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:28:20,241 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:28:20,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:28:20,243 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:28:20,243 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:28:20,244 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:28:20,244 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_741d8921-f621-447d-add6-a27ce2f90bec/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_741d8921-f621-447d-add6-a27ce2f90bec/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4eb782e6042aea0609a33229d26d2fc0e173871777f83d353b448b155d9fa10 [2022-10-17 10:28:20,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:28:20,690 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:28:20,694 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:28:20,695 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:28:20,696 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:28:20,698 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_741d8921-f621-447d-add6-a27ce2f90bec/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c [2022-10-17 10:28:20,789 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_741d8921-f621-447d-add6-a27ce2f90bec/bin/uautomizer-J5u9QxTXDZ/data/5dcf083d3/64469190fbc848cf9883ee0cc5f225a8/FLAGd7af16d13 [2022-10-17 10:28:21,635 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:28:21,636 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_741d8921-f621-447d-add6-a27ce2f90bec/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c [2022-10-17 10:28:21,664 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_741d8921-f621-447d-add6-a27ce2f90bec/bin/uautomizer-J5u9QxTXDZ/data/5dcf083d3/64469190fbc848cf9883ee0cc5f225a8/FLAGd7af16d13 [2022-10-17 10:28:21,691 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_741d8921-f621-447d-add6-a27ce2f90bec/bin/uautomizer-J5u9QxTXDZ/data/5dcf083d3/64469190fbc848cf9883ee0cc5f225a8 [2022-10-17 10:28:21,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:28:21,695 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:28:21,697 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:28:21,698 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:28:21,701 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:28:21,702 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:28:21" (1/1) ... [2022-10-17 10:28:21,704 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b1e157c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:21, skipping insertion in model container [2022-10-17 10:28:21,704 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:28:21" (1/1) ... [2022-10-17 10:28:21,712 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:28:21,874 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:28:22,667 WARN L230 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_741d8921-f621-447d-add6-a27ce2f90bec/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c[30249,30262] [2022-10-17 10:28:22,754 WARN L230 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_741d8921-f621-447d-add6-a27ce2f90bec/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c[33700,33713] [2022-10-17 10:28:23,038 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:28:23,052 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:28:23,393 WARN L230 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_741d8921-f621-447d-add6-a27ce2f90bec/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c[30249,30262] [2022-10-17 10:28:23,459 WARN L230 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_741d8921-f621-447d-add6-a27ce2f90bec/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c[33700,33713] [2022-10-17 10:28:23,675 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:28:23,698 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:28:23,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:23 WrapperNode [2022-10-17 10:28:23,699 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:28:23,700 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:28:23,701 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:28:23,701 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:28:23,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:23" (1/1) ... [2022-10-17 10:28:23,741 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:23" (1/1) ... [2022-10-17 10:28:23,854 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 3743 [2022-10-17 10:28:23,859 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:28:23,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:28:23,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:28:23,860 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:28:23,869 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:23" (1/1) ... [2022-10-17 10:28:23,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:23" (1/1) ... [2022-10-17 10:28:23,877 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:23" (1/1) ... [2022-10-17 10:28:23,878 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:23" (1/1) ... [2022-10-17 10:28:23,943 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:23" (1/1) ... [2022-10-17 10:28:24,002 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:23" (1/1) ... [2022-10-17 10:28:24,016 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:23" (1/1) ... [2022-10-17 10:28:24,031 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:23" (1/1) ... [2022-10-17 10:28:24,051 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:28:24,053 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:28:24,053 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:28:24,053 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:28:24,054 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:23" (1/1) ... [2022-10-17 10:28:24,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:28:24,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_741d8921-f621-447d-add6-a27ce2f90bec/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:28:24,090 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_741d8921-f621-447d-add6-a27ce2f90bec/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:28:24,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_741d8921-f621-447d-add6-a27ce2f90bec/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:28:24,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:28:24,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:28:24,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:28:24,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:28:24,439 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:28:24,442 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:28:27,473 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:28:27,503 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:28:27,503 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 10:28:27,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:28:27 BoogieIcfgContainer [2022-10-17 10:28:27,508 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:28:27,512 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:28:27,512 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:28:27,522 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:28:27,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:28:21" (1/3) ... [2022-10-17 10:28:27,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@588967de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:28:27, skipping insertion in model container [2022-10-17 10:28:27,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:28:23" (2/3) ... [2022-10-17 10:28:27,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@588967de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:28:27, skipping insertion in model container [2022-10-17 10:28:27,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:28:27" (3/3) ... [2022-10-17 10:28:27,526 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c [2022-10-17 10:28:27,547 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:28:27,547 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-10-17 10:28:27,645 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:28:27,653 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;@4ea32614, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:28:27,653 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-10-17 10:28:27,679 INFO L276 IsEmpty]: Start isEmpty. Operand has 1073 states, 1070 states have (on average 1.749532710280374) internal successors, (1872), 1072 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:27,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-10-17 10:28:27,741 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:28:27,742 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:28:27,743 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:28:27,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:28:27,749 INFO L85 PathProgramCache]: Analyzing trace with hash -410519448, now seen corresponding path program 1 times [2022-10-17 10:28:27,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:28:27,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558617715] [2022-10-17 10:28:27,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:28:27,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:28:28,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:28,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:28:28,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:28:28,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558617715] [2022-10-17 10:28:28,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558617715] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:28:28,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:28:28,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:28:28,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308007406] [2022-10-17 10:28:28,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:28:28,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:28:28,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:28:28,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:28:28,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:28:28,818 INFO L87 Difference]: Start difference. First operand has 1073 states, 1070 states have (on average 1.749532710280374) internal successors, (1872), 1072 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:29,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:28:29,182 INFO L93 Difference]: Finished difference Result 1964 states and 3398 transitions. [2022-10-17 10:28:29,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:28:29,185 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 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 156 [2022-10-17 10:28:29,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:28:29,234 INFO L225 Difference]: With dead ends: 1964 [2022-10-17 10:28:29,234 INFO L226 Difference]: Without dead ends: 1070 [2022-10-17 10:28:29,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:28:29,248 INFO L413 NwaCegarLoop]: 1865 mSDtfsCounter, 223 mSDsluCounter, 3455 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 5320 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:28:29,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 5320 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:28:29,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2022-10-17 10:28:29,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 1070. [2022-10-17 10:28:29,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1070 states, 1068 states have (on average 1.6975655430711611) internal successors, (1813), 1069 states have internal predecessors, (1813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:29,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1813 transitions. [2022-10-17 10:28:29,412 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1813 transitions. Word has length 156 [2022-10-17 10:28:29,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:28:29,413 INFO L495 AbstractCegarLoop]: Abstraction has 1070 states and 1813 transitions. [2022-10-17 10:28:29,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:29,414 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1813 transitions. [2022-10-17 10:28:29,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-10-17 10:28:29,419 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:28:29,420 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:28:29,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:28:29,420 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:28:29,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:28:29,421 INFO L85 PathProgramCache]: Analyzing trace with hash -2027184705, now seen corresponding path program 1 times [2022-10-17 10:28:29,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:28:29,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70744607] [2022-10-17 10:28:29,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:28:29,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:28:29,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:29,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:28:29,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:28:29,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70744607] [2022-10-17 10:28:29,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70744607] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:28:29,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:28:29,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:28:29,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738352761] [2022-10-17 10:28:29,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:28:29,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:28:29,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:28:29,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:28:29,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:28:29,747 INFO L87 Difference]: Start difference. First operand 1070 states and 1813 transitions. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:30,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:28:30,067 INFO L93 Difference]: Finished difference Result 2707 states and 4596 transitions. [2022-10-17 10:28:30,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:28:30,069 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 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 197 [2022-10-17 10:28:30,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:28:30,093 INFO L225 Difference]: With dead ends: 2707 [2022-10-17 10:28:30,094 INFO L226 Difference]: Without dead ends: 1854 [2022-10-17 10:28:30,104 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 [2022-10-17 10:28:30,106 INFO L413 NwaCegarLoop]: 2880 mSDtfsCounter, 1312 mSDsluCounter, 1659 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1312 SdHoareTripleChecker+Valid, 4539 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:28:30,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1312 Valid, 4539 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 10:28:30,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1854 states. [2022-10-17 10:28:30,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1854 to 1850. [2022-10-17 10:28:30,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1850 states, 1848 states have (on average 1.6785714285714286) internal successors, (3102), 1849 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:30,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1850 states to 1850 states and 3102 transitions. [2022-10-17 10:28:30,265 INFO L78 Accepts]: Start accepts. Automaton has 1850 states and 3102 transitions. Word has length 197 [2022-10-17 10:28:30,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:28:30,268 INFO L495 AbstractCegarLoop]: Abstraction has 1850 states and 3102 transitions. [2022-10-17 10:28:30,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:30,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1850 states and 3102 transitions. [2022-10-17 10:28:30,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-10-17 10:28:30,283 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:28:30,283 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:28:30,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:28:30,284 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:28:30,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:28:30,287 INFO L85 PathProgramCache]: Analyzing trace with hash -945736116, now seen corresponding path program 1 times [2022-10-17 10:28:30,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:28:30,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020137374] [2022-10-17 10:28:30,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:28:30,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:28:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:30,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:28:30,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:28:30,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020137374] [2022-10-17 10:28:30,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020137374] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:28:30,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:28:30,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:28:30,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116643980] [2022-10-17 10:28:30,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:28:30,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:28:30,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:28:30,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:28:30,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:28:30,548 INFO L87 Difference]: Start difference. First operand 1850 states and 3102 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:30,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:28:30,794 INFO L93 Difference]: Finished difference Result 3084 states and 5213 transitions. [2022-10-17 10:28:30,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:28:30,795 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 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 200 [2022-10-17 10:28:30,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:28:30,811 INFO L225 Difference]: With dead ends: 3084 [2022-10-17 10:28:30,812 INFO L226 Difference]: Without dead ends: 2223 [2022-10-17 10:28:30,819 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 [2022-10-17 10:28:30,824 INFO L413 NwaCegarLoop]: 2627 mSDtfsCounter, 1194 mSDsluCounter, 1562 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1194 SdHoareTripleChecker+Valid, 4189 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:28:30,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1194 Valid, 4189 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:28:30,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2223 states. [2022-10-17 10:28:30,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2223 to 2219. [2022-10-17 10:28:30,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2219 states, 2217 states have (on average 1.6833558863328824) internal successors, (3732), 2218 states have internal predecessors, (3732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:30,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2219 states to 2219 states and 3732 transitions. [2022-10-17 10:28:30,965 INFO L78 Accepts]: Start accepts. Automaton has 2219 states and 3732 transitions. Word has length 200 [2022-10-17 10:28:30,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:28:30,965 INFO L495 AbstractCegarLoop]: Abstraction has 2219 states and 3732 transitions. [2022-10-17 10:28:30,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:30,966 INFO L276 IsEmpty]: Start isEmpty. Operand 2219 states and 3732 transitions. [2022-10-17 10:28:30,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-10-17 10:28:30,975 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:28:30,975 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:28:30,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:28:30,976 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:28:30,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:28:30,978 INFO L85 PathProgramCache]: Analyzing trace with hash 366700065, now seen corresponding path program 1 times [2022-10-17 10:28:30,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:28:30,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008565411] [2022-10-17 10:28:30,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:28:30,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:28:31,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:31,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:28:31,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:28:31,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008565411] [2022-10-17 10:28:31,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008565411] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:28:31,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:28:31,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:28:31,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102218941] [2022-10-17 10:28:31,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:28:31,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:28:31,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:28:31,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:28:31,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:28:31,327 INFO L87 Difference]: Start difference. First operand 2219 states and 3732 transitions. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:31,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:28:31,725 INFO L93 Difference]: Finished difference Result 6033 states and 10140 transitions. [2022-10-17 10:28:31,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:28:31,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 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 203 [2022-10-17 10:28:31,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:28:31,759 INFO L225 Difference]: With dead ends: 6033 [2022-10-17 10:28:31,760 INFO L226 Difference]: Without dead ends: 4049 [2022-10-17 10:28:31,767 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 [2022-10-17 10:28:31,778 INFO L413 NwaCegarLoop]: 3063 mSDtfsCounter, 1334 mSDsluCounter, 1661 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1334 SdHoareTripleChecker+Valid, 4724 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:28:31,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1334 Valid, 4724 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:28:31,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4049 states. [2022-10-17 10:28:32,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4049 to 4045. [2022-10-17 10:28:32,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4045 states, 4043 states have (on average 1.6747464753895622) internal successors, (6771), 4044 states have internal predecessors, (6771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:32,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4045 states to 4045 states and 6771 transitions. [2022-10-17 10:28:32,084 INFO L78 Accepts]: Start accepts. Automaton has 4045 states and 6771 transitions. Word has length 203 [2022-10-17 10:28:32,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:28:32,086 INFO L495 AbstractCegarLoop]: Abstraction has 4045 states and 6771 transitions. [2022-10-17 10:28:32,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:32,087 INFO L276 IsEmpty]: Start isEmpty. Operand 4045 states and 6771 transitions. [2022-10-17 10:28:32,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-10-17 10:28:32,102 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:28:32,103 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:28:32,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:28:32,103 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:28:32,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:28:32,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1687787636, now seen corresponding path program 1 times [2022-10-17 10:28:32,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:28:32,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797415443] [2022-10-17 10:28:32,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:28:32,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:28:32,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:32,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:28:32,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:28:32,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797415443] [2022-10-17 10:28:32,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797415443] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:28:32,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:28:32,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:28:32,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848736694] [2022-10-17 10:28:32,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:28:32,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:28:32,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:28:32,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:28:32,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:28:32,353 INFO L87 Difference]: Start difference. First operand 4045 states and 6771 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:32,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:28:32,837 INFO L93 Difference]: Finished difference Result 7151 states and 12024 transitions. [2022-10-17 10:28:32,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:28:32,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 206 [2022-10-17 10:28:32,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:28:32,873 INFO L225 Difference]: With dead ends: 7151 [2022-10-17 10:28:32,874 INFO L226 Difference]: Without dead ends: 5159 [2022-10-17 10:28:32,879 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 [2022-10-17 10:28:32,880 INFO L413 NwaCegarLoop]: 2561 mSDtfsCounter, 1169 mSDsluCounter, 1524 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1169 SdHoareTripleChecker+Valid, 4085 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:28:32,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1169 Valid, 4085 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:28:32,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5159 states. [2022-10-17 10:28:33,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5159 to 5155. [2022-10-17 10:28:33,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5155 states, 5153 states have (on average 1.6768872501455463) internal successors, (8641), 5154 states have internal predecessors, (8641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:33,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5155 states to 5155 states and 8641 transitions. [2022-10-17 10:28:33,368 INFO L78 Accepts]: Start accepts. Automaton has 5155 states and 8641 transitions. Word has length 206 [2022-10-17 10:28:33,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:28:33,369 INFO L495 AbstractCegarLoop]: Abstraction has 5155 states and 8641 transitions. [2022-10-17 10:28:33,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:33,369 INFO L276 IsEmpty]: Start isEmpty. Operand 5155 states and 8641 transitions. [2022-10-17 10:28:33,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-10-17 10:28:33,385 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:28:33,385 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:28:33,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:28:33,386 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:28:33,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:28:33,386 INFO L85 PathProgramCache]: Analyzing trace with hash -469779909, now seen corresponding path program 1 times [2022-10-17 10:28:33,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:28:33,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309412605] [2022-10-17 10:28:33,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:28:33,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:28:33,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:33,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:28:33,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:28:33,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309412605] [2022-10-17 10:28:33,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309412605] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:28:33,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:28:33,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:28:33,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629186558] [2022-10-17 10:28:33,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:28:33,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:28:33,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:28:33,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:28:33,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:28:33,613 INFO L87 Difference]: Start difference. First operand 5155 states and 8641 transitions. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:34,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:28:34,501 INFO L93 Difference]: Finished difference Result 14517 states and 24269 transitions. [2022-10-17 10:28:34,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:28:34,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 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 209 [2022-10-17 10:28:34,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:28:34,570 INFO L225 Difference]: With dead ends: 14517 [2022-10-17 10:28:34,570 INFO L226 Difference]: Without dead ends: 9615 [2022-10-17 10:28:34,581 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 [2022-10-17 10:28:34,581 INFO L413 NwaCegarLoop]: 2996 mSDtfsCounter, 1308 mSDsluCounter, 1615 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1308 SdHoareTripleChecker+Valid, 4611 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:28:34,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1308 Valid, 4611 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:28:34,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9615 states. [2022-10-17 10:28:35,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9615 to 9611. [2022-10-17 10:28:35,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9611 states, 9609 states have (on average 1.6636486627120408) internal successors, (15986), 9610 states have internal predecessors, (15986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:35,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9611 states to 9611 states and 15986 transitions. [2022-10-17 10:28:35,626 INFO L78 Accepts]: Start accepts. Automaton has 9611 states and 15986 transitions. Word has length 209 [2022-10-17 10:28:35,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:28:35,627 INFO L495 AbstractCegarLoop]: Abstraction has 9611 states and 15986 transitions. [2022-10-17 10:28:35,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:35,628 INFO L276 IsEmpty]: Start isEmpty. Operand 9611 states and 15986 transitions. [2022-10-17 10:28:35,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-10-17 10:28:35,652 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:28:35,653 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:28:35,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:28:35,653 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:28:35,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:28:35,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1363493332, now seen corresponding path program 1 times [2022-10-17 10:28:35,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:28:35,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579233368] [2022-10-17 10:28:35,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:28:35,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:28:35,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:35,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:28:35,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:28:35,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579233368] [2022-10-17 10:28:35,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579233368] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:28:35,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:28:35,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:28:35,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402514133] [2022-10-17 10:28:35,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:28:35,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:28:35,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:28:35,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:28:35,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:28:35,859 INFO L87 Difference]: Start difference. First operand 9611 states and 15986 transitions. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:36,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:28:36,900 INFO L93 Difference]: Finished difference Result 17411 states and 29089 transitions. [2022-10-17 10:28:36,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:28:36,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 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 212 [2022-10-17 10:28:36,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:28:36,954 INFO L225 Difference]: With dead ends: 17411 [2022-10-17 10:28:36,955 INFO L226 Difference]: Without dead ends: 12501 [2022-10-17 10:28:36,969 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 [2022-10-17 10:28:36,970 INFO L413 NwaCegarLoop]: 2495 mSDtfsCounter, 1144 mSDsluCounter, 1478 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1144 SdHoareTripleChecker+Valid, 3973 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:28:36,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1144 Valid, 3973 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:28:36,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12501 states. [2022-10-17 10:28:38,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12501 to 12497. [2022-10-17 10:28:38,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12497 states, 12495 states have (on average 1.6641856742697079) internal successors, (20794), 12496 states have internal predecessors, (20794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:38,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12497 states to 12497 states and 20794 transitions. [2022-10-17 10:28:38,177 INFO L78 Accepts]: Start accepts. Automaton has 12497 states and 20794 transitions. Word has length 212 [2022-10-17 10:28:38,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:28:38,178 INFO L495 AbstractCegarLoop]: Abstraction has 12497 states and 20794 transitions. [2022-10-17 10:28:38,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:38,179 INFO L276 IsEmpty]: Start isEmpty. Operand 12497 states and 20794 transitions. [2022-10-17 10:28:38,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-10-17 10:28:38,209 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:28:38,209 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:28:38,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 10:28:38,209 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:28:38,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:28:38,210 INFO L85 PathProgramCache]: Analyzing trace with hash -590783271, now seen corresponding path program 1 times [2022-10-17 10:28:38,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:28:38,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69446709] [2022-10-17 10:28:38,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:28:38,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:28:38,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:38,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:28:38,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:28:38,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69446709] [2022-10-17 10:28:38,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69446709] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:28:38,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:28:38,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:28:38,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450505141] [2022-10-17 10:28:38,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:28:38,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:28:38,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:28:38,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:28:38,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:28:38,442 INFO L87 Difference]: Start difference. First operand 12497 states and 20794 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:40,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:28:40,730 INFO L93 Difference]: Finished difference Result 35661 states and 59076 transitions. [2022-10-17 10:28:40,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:28:40,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 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 215 [2022-10-17 10:28:40,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:28:40,809 INFO L225 Difference]: With dead ends: 35661 [2022-10-17 10:28:40,809 INFO L226 Difference]: Without dead ends: 23435 [2022-10-17 10:28:40,835 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 [2022-10-17 10:28:40,835 INFO L413 NwaCegarLoop]: 2929 mSDtfsCounter, 1282 mSDsluCounter, 1569 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1282 SdHoareTripleChecker+Valid, 4498 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:28:40,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1282 Valid, 4498 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:28:40,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23435 states. [2022-10-17 10:28:42,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23435 to 23431. [2022-10-17 10:28:42,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23431 states, 23429 states have (on average 1.6463784199069529) internal successors, (38573), 23430 states have internal predecessors, (38573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:43,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23431 states to 23431 states and 38573 transitions. [2022-10-17 10:28:43,036 INFO L78 Accepts]: Start accepts. Automaton has 23431 states and 38573 transitions. Word has length 215 [2022-10-17 10:28:43,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:28:43,036 INFO L495 AbstractCegarLoop]: Abstraction has 23431 states and 38573 transitions. [2022-10-17 10:28:43,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:43,037 INFO L276 IsEmpty]: Start isEmpty. Operand 23431 states and 38573 transitions. [2022-10-17 10:28:43,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-10-17 10:28:43,090 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:28:43,090 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:28:43,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 10:28:43,091 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:28:43,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:28:43,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1924814136, now seen corresponding path program 1 times [2022-10-17 10:28:43,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:28:43,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880746723] [2022-10-17 10:28:43,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:28:43,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:28:43,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:28:43,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:28:43,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:28:43,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880746723] [2022-10-17 10:28:43,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880746723] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:28:43,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:28:43,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:28:43,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434856758] [2022-10-17 10:28:43,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:28:43,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:28:43,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:28:43,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:28:43,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:28:43,302 INFO L87 Difference]: Start difference. First operand 23431 states and 38573 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:28:46,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:28:46,203 INFO L93 Difference]: Finished difference Result 42593 states and 70422 transitions. [2022-10-17 10:28:46,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:28:46,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 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 218 [2022-10-17 10:28:46,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:28:46,309 INFO L225 Difference]: With dead ends: 42593 [2022-10-17 10:28:46,309 INFO L226 Difference]: Without dead ends: 30359 [2022-10-17 10:28:46,335 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 [2022-10-17 10:28:46,338 INFO L413 NwaCegarLoop]: 2429 mSDtfsCounter, 1119 mSDsluCounter, 1432 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1119 SdHoareTripleChecker+Valid, 3861 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:28:46,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1119 Valid, 3861 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:28:46,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30359 states.