./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label44+token_ring.08.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a20f84-68ca-472c-9b3c-bb41d2ed7d32/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a20f84-68ca-472c-9b3c-bb41d2ed7d32/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a20f84-68ca-472c-9b3c-bb41d2ed7d32/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a20f84-68ca-472c-9b3c-bb41d2ed7d32/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label44+token_ring.08.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a20f84-68ca-472c-9b3c-bb41d2ed7d32/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a20f84-68ca-472c-9b3c-bb41d2ed7d32/bin/uautomizer-DQz5hQGWxF --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 a50787eee309f695181bc37c4f84940bb8fed2cb76457a2c563ef0feb29ebac8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:08:16,091 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:08:16,094 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:08:16,138 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:08:16,138 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:08:16,140 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:08:16,142 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:08:16,144 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:08:16,147 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:08:16,148 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:08:16,150 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:08:16,151 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:08:16,152 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:08:16,153 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:08:16,155 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:08:16,159 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:08:16,160 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:08:16,161 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:08:16,164 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:08:16,167 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:08:16,169 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:08:16,176 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:08:16,181 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:08:16,181 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:08:16,190 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:08:16,191 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:08:16,191 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:08:16,192 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:08:16,193 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:08:16,194 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:08:16,194 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:08:16,195 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:08:16,196 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:08:16,197 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:08:16,198 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:08:16,198 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:08:16,202 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:08:16,202 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:08:16,202 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:08:16,206 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:08:16,207 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:08:16,208 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a20f84-68ca-472c-9b3c-bb41d2ed7d32/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 07:08:16,250 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:08:16,251 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:08:16,251 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:08:16,251 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:08:16,258 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 07:08:16,259 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 07:08:16,259 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:08:16,260 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:08:16,260 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:08:16,260 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:08:16,261 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 07:08:16,261 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:08:16,261 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 07:08:16,262 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:08:16,262 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 07:08:16,262 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 07:08:16,262 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 07:08:16,262 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 07:08:16,263 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 07:08:16,263 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:08:16,263 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 07:08:16,263 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:08:16,263 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:08:16,264 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 07:08:16,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:08:16,264 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:08:16,264 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 07:08:16,264 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 07:08:16,265 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 07:08:16,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 07:08:16,266 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 07:08:16,266 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 07:08:16,267 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 07:08:16,267 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:08:16,267 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_72a20f84-68ca-472c-9b3c-bb41d2ed7d32/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a20f84-68ca-472c-9b3c-bb41d2ed7d32/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a50787eee309f695181bc37c4f84940bb8fed2cb76457a2c563ef0feb29ebac8 [2021-11-20 07:08:16,535 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:08:16,567 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:08:16,571 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:08:16,572 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:08:16,573 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:08:16,575 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a20f84-68ca-472c-9b3c-bb41d2ed7d32/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/combinations/Problem05_label44+token_ring.08.cil-1.c [2021-11-20 07:08:16,643 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a20f84-68ca-472c-9b3c-bb41d2ed7d32/bin/uautomizer-DQz5hQGWxF/data/33d338a0a/f75010fe364842e79a2c790fb6ed3f9b/FLAG9eae9244f [2021-11-20 07:08:17,668 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:08:17,669 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a20f84-68ca-472c-9b3c-bb41d2ed7d32/sv-benchmarks/c/combinations/Problem05_label44+token_ring.08.cil-1.c [2021-11-20 07:08:17,725 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a20f84-68ca-472c-9b3c-bb41d2ed7d32/bin/uautomizer-DQz5hQGWxF/data/33d338a0a/f75010fe364842e79a2c790fb6ed3f9b/FLAG9eae9244f [2021-11-20 07:08:18,157 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a20f84-68ca-472c-9b3c-bb41d2ed7d32/bin/uautomizer-DQz5hQGWxF/data/33d338a0a/f75010fe364842e79a2c790fb6ed3f9b [2021-11-20 07:08:18,159 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:08:18,161 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:08:18,164 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:08:18,166 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:08:18,169 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:08:18,170 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:08:18" (1/1) ... [2021-11-20 07:08:18,171 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@739cbec9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:08:18, skipping insertion in model container [2021-11-20 07:08:18,172 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:08:18" (1/1) ... [2021-11-20 07:08:18,179 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:08:18,495 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:08:20,748 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_72a20f84-68ca-472c-9b3c-bb41d2ed7d32/sv-benchmarks/c/combinations/Problem05_label44+token_ring.08.cil-1.c[377340,377353] [2021-11-20 07:08:20,781 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_72a20f84-68ca-472c-9b3c-bb41d2ed7d32/sv-benchmarks/c/combinations/Problem05_label44+token_ring.08.cil-1.c[383339,383352] [2021-11-20 07:08:21,078 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:08:21,088 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:08:22,407 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_72a20f84-68ca-472c-9b3c-bb41d2ed7d32/sv-benchmarks/c/combinations/Problem05_label44+token_ring.08.cil-1.c[377340,377353] [2021-11-20 07:08:22,415 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_72a20f84-68ca-472c-9b3c-bb41d2ed7d32/sv-benchmarks/c/combinations/Problem05_label44+token_ring.08.cil-1.c[383339,383352] [2021-11-20 07:08:22,449 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:08:22,524 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:08:22,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:08:22 WrapperNode [2021-11-20 07:08:22,525 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:08:22,526 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:08:22,526 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:08:22,527 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:08:22,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:08:22" (1/1) ... [2021-11-20 07:08:22,657 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:08:22" (1/1) ... [2021-11-20 07:08:23,308 INFO L137 Inliner]: procedures = 60, calls = 65, calls flagged for inlining = 38, calls inlined = 38, statements flattened = 12967 [2021-11-20 07:08:23,308 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:08:23,309 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:08:23,309 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:08:23,309 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:08:23,318 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:08:22" (1/1) ... [2021-11-20 07:08:23,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:08:22" (1/1) ... [2021-11-20 07:08:23,431 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:08:22" (1/1) ... [2021-11-20 07:08:23,431 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:08:22" (1/1) ... [2021-11-20 07:08:23,746 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:08:22" (1/1) ... [2021-11-20 07:08:23,943 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:08:22" (1/1) ... [2021-11-20 07:08:23,981 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:08:22" (1/1) ... [2021-11-20 07:08:24,056 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:08:24,057 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:08:24,057 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:08:24,058 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:08:24,058 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:08:22" (1/1) ... [2021-11-20 07:08:24,085 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:08:24,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a20f84-68ca-472c-9b3c-bb41d2ed7d32/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:08:24,132 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a20f84-68ca-472c-9b3c-bb41d2ed7d32/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 07:08:24,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a20f84-68ca-472c-9b3c-bb41d2ed7d32/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 07:08:24,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 07:08:24,261 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-11-20 07:08:24,261 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-11-20 07:08:24,261 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-11-20 07:08:24,262 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-11-20 07:08:24,262 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-11-20 07:08:24,262 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-11-20 07:08:24,263 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-11-20 07:08:24,263 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-11-20 07:08:24,263 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-11-20 07:08:24,263 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-11-20 07:08:24,263 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-11-20 07:08:24,263 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-11-20 07:08:24,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 07:08:24,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:08:24,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:08:24,475 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:08:24,477 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:08:32,189 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:08:32,227 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:08:32,227 INFO L301 CfgBuilder]: Removed 12 assume(true) statements. [2021-11-20 07:08:32,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:08:32 BoogieIcfgContainer [2021-11-20 07:08:32,235 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:08:32,237 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 07:08:32,237 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 07:08:32,240 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 07:08:32,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:08:18" (1/3) ... [2021-11-20 07:08:32,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39fb988b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:08:32, skipping insertion in model container [2021-11-20 07:08:32,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:08:22" (2/3) ... [2021-11-20 07:08:32,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39fb988b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:08:32, skipping insertion in model container [2021-11-20 07:08:32,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:08:32" (3/3) ... [2021-11-20 07:08:32,243 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label44+token_ring.08.cil-1.c [2021-11-20 07:08:32,249 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 07:08:32,249 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-20 07:08:32,309 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 07:08:32,316 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 07:08:32,317 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-20 07:08:32,391 INFO L276 IsEmpty]: Start isEmpty. Operand has 2465 states, 2434 states have (on average 1.8483976992604765) internal successors, (4499), 2437 states have internal predecessors, (4499), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-20 07:08:32,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-20 07:08:32,410 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:08:32,411 INFO L514 BasicCegarLoop]: 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] [2021-11-20 07:08:32,411 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:08:32,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:08:32,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1316356206, now seen corresponding path program 1 times [2021-11-20 07:08:32,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:08:32,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357313657] [2021-11-20 07:08:32,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:08:32,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:08:32,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:32,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:08:32,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:32,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:08:32,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:32,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-20 07:08:32,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:32,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-20 07:08:32,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:32,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-20 07:08:32,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:32,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:08:32,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:08:32,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357313657] [2021-11-20 07:08:32,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357313657] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:08:32,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:08:32,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 07:08:32,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696204039] [2021-11-20 07:08:32,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:08:32,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:08:32,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:08:32,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:08:32,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:08:32,909 INFO L87 Difference]: Start difference. First operand has 2465 states, 2434 states have (on average 1.8483976992604765) internal successors, (4499), 2437 states have internal predecessors, (4499), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:08:34,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:08:34,466 INFO L93 Difference]: Finished difference Result 5022 states and 9244 transitions. [2021-11-20 07:08:34,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 07:08:34,480 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-11-20 07:08:34,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:08:34,564 INFO L225 Difference]: With dead ends: 5022 [2021-11-20 07:08:34,576 INFO L226 Difference]: Without dead ends: 2496 [2021-11-20 07:08:34,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:08:34,598 INFO L933 BasicCegarLoop]: 4499 mSDtfsCounter, 734 mSDsluCounter, 12377 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 16876 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-20 07:08:34,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [754 Valid, 16876 Invalid, 547 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [52 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-20 07:08:34,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2496 states. [2021-11-20 07:08:34,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2496 to 2398. [2021-11-20 07:08:34,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2398 states, 2368 states have (on average 1.8344594594594594) internal successors, (4344), 2370 states have internal predecessors, (4344), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-20 07:08:34,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 4388 transitions. [2021-11-20 07:08:34,834 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 4388 transitions. Word has length 134 [2021-11-20 07:08:34,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:08:34,835 INFO L470 AbstractCegarLoop]: Abstraction has 2398 states and 4388 transitions. [2021-11-20 07:08:34,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:08:34,838 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 4388 transitions. [2021-11-20 07:08:34,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-20 07:08:34,851 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:08:34,852 INFO L514 BasicCegarLoop]: 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] [2021-11-20 07:08:34,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 07:08:34,853 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:08:34,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:08:34,857 INFO L85 PathProgramCache]: Analyzing trace with hash 2022952812, now seen corresponding path program 1 times [2021-11-20 07:08:34,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:08:34,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601948551] [2021-11-20 07:08:34,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:08:34,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:08:34,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:35,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:08:35,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:35,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:08:35,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:35,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-20 07:08:35,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:35,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-20 07:08:35,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:35,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-20 07:08:35,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:35,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:08:35,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:08:35,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601948551] [2021-11-20 07:08:35,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601948551] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:08:35,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:08:35,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 07:08:35,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583802360] [2021-11-20 07:08:35,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:08:35,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:08:35,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:08:35,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:08:35,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:08:35,259 INFO L87 Difference]: Start difference. First operand 2398 states and 4388 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:08:37,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:08:37,592 INFO L93 Difference]: Finished difference Result 3126 states and 5555 transitions. [2021-11-20 07:08:37,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 07:08:37,593 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-11-20 07:08:37,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:08:37,617 INFO L225 Difference]: With dead ends: 3126 [2021-11-20 07:08:37,617 INFO L226 Difference]: Without dead ends: 2865 [2021-11-20 07:08:37,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:08:37,623 INFO L933 BasicCegarLoop]: 4466 mSDtfsCounter, 5050 mSDsluCounter, 12616 mSDsCounter, 0 mSdLazyCounter, 1381 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5065 SdHoareTripleChecker+Valid, 17082 SdHoareTripleChecker+Invalid, 1481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-20 07:08:37,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5065 Valid, 17082 Invalid, 1481 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [100 Valid, 1381 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-20 07:08:37,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2865 states. [2021-11-20 07:08:37,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2865 to 2670. [2021-11-20 07:08:37,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2670 states, 2616 states have (on average 1.8103975535168195) internal successors, (4736), 2619 states have internal predecessors, (4736), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2021-11-20 07:08:37,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2670 states to 2670 states and 4817 transitions. [2021-11-20 07:08:37,824 INFO L78 Accepts]: Start accepts. Automaton has 2670 states and 4817 transitions. Word has length 134 [2021-11-20 07:08:37,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:08:37,824 INFO L470 AbstractCegarLoop]: Abstraction has 2670 states and 4817 transitions. [2021-11-20 07:08:37,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:08:37,825 INFO L276 IsEmpty]: Start isEmpty. Operand 2670 states and 4817 transitions. [2021-11-20 07:08:37,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-20 07:08:37,827 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:08:37,827 INFO L514 BasicCegarLoop]: 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] [2021-11-20 07:08:37,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 07:08:37,828 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:08:37,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:08:37,829 INFO L85 PathProgramCache]: Analyzing trace with hash 316449264, now seen corresponding path program 1 times [2021-11-20 07:08:37,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:08:37,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399091877] [2021-11-20 07:08:37,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:08:37,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:08:37,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:37,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:08:37,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:37,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:08:37,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:37,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-20 07:08:37,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:37,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-20 07:08:38,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:38,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-20 07:08:38,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:38,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:08:38,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:08:38,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399091877] [2021-11-20 07:08:38,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399091877] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:08:38,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:08:38,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:08:38,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540841925] [2021-11-20 07:08:38,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:08:38,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:08:38,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:08:38,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:08:38,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:08:38,023 INFO L87 Difference]: Start difference. First operand 2670 states and 4817 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:08:39,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:08:39,552 INFO L93 Difference]: Finished difference Result 3412 states and 6012 transitions. [2021-11-20 07:08:39,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:08:39,553 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-11-20 07:08:39,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:08:39,573 INFO L225 Difference]: With dead ends: 3412 [2021-11-20 07:08:39,573 INFO L226 Difference]: Without dead ends: 2879 [2021-11-20 07:08:39,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:08:39,578 INFO L933 BasicCegarLoop]: 4417 mSDtfsCounter, 4746 mSDsluCounter, 16509 mSDsCounter, 0 mSdLazyCounter, 1080 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4762 SdHoareTripleChecker+Valid, 20926 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:08:39,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4762 Valid, 20926 Invalid, 1150 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [70 Valid, 1080 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-20 07:08:39,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2879 states. [2021-11-20 07:08:39,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2879 to 2670. [2021-11-20 07:08:39,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2670 states, 2616 states have (on average 1.8096330275229358) internal successors, (4734), 2619 states have internal predecessors, (4734), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2021-11-20 07:08:39,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2670 states to 2670 states and 4815 transitions. [2021-11-20 07:08:39,693 INFO L78 Accepts]: Start accepts. Automaton has 2670 states and 4815 transitions. Word has length 134 [2021-11-20 07:08:39,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:08:39,693 INFO L470 AbstractCegarLoop]: Abstraction has 2670 states and 4815 transitions. [2021-11-20 07:08:39,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:08:39,694 INFO L276 IsEmpty]: Start isEmpty. Operand 2670 states and 4815 transitions. [2021-11-20 07:08:39,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-20 07:08:39,696 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:08:39,696 INFO L514 BasicCegarLoop]: 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] [2021-11-20 07:08:39,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 07:08:39,697 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:08:39,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:08:39,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1976631762, now seen corresponding path program 1 times [2021-11-20 07:08:39,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:08:39,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611878214] [2021-11-20 07:08:39,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:08:39,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:08:39,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:39,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:08:39,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:39,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:08:39,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:39,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-20 07:08:39,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:39,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-20 07:08:39,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:39,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-20 07:08:39,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:39,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:08:39,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:08:39,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611878214] [2021-11-20 07:08:39,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611878214] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:08:39,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:08:39,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:08:39,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133973301] [2021-11-20 07:08:39,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:08:39,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:08:39,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:08:39,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:08:39,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:08:39,836 INFO L87 Difference]: Start difference. First operand 2670 states and 4815 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:08:42,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:08:42,605 INFO L93 Difference]: Finished difference Result 3775 states and 6579 transitions. [2021-11-20 07:08:42,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 07:08:42,607 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-11-20 07:08:42,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:08:42,628 INFO L225 Difference]: With dead ends: 3775 [2021-11-20 07:08:42,628 INFO L226 Difference]: Without dead ends: 3242 [2021-11-20 07:08:42,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-11-20 07:08:42,642 INFO L933 BasicCegarLoop]: 4509 mSDtfsCounter, 5127 mSDsluCounter, 16821 mSDsCounter, 0 mSdLazyCounter, 1934 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5142 SdHoareTripleChecker+Valid, 21330 SdHoareTripleChecker+Invalid, 2025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:08:42,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5142 Valid, 21330 Invalid, 2025 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [91 Valid, 1934 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-20 07:08:42,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3242 states. [2021-11-20 07:08:42,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3242 to 2923. [2021-11-20 07:08:42,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2923 states, 2845 states have (on average 1.78804920913884) internal successors, (5087), 2849 states have internal predecessors, (5087), 56 states have call successors, (56), 18 states have call predecessors, (56), 20 states have return successors, (61), 57 states have call predecessors, (61), 56 states have call successors, (61) [2021-11-20 07:08:42,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2923 states to 2923 states and 5204 transitions. [2021-11-20 07:08:42,783 INFO L78 Accepts]: Start accepts. Automaton has 2923 states and 5204 transitions. Word has length 134 [2021-11-20 07:08:42,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:08:42,783 INFO L470 AbstractCegarLoop]: Abstraction has 2923 states and 5204 transitions. [2021-11-20 07:08:42,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:08:42,791 INFO L276 IsEmpty]: Start isEmpty. Operand 2923 states and 5204 transitions. [2021-11-20 07:08:42,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-20 07:08:42,794 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:08:42,794 INFO L514 BasicCegarLoop]: 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] [2021-11-20 07:08:42,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 07:08:42,795 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:08:42,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:08:42,795 INFO L85 PathProgramCache]: Analyzing trace with hash -249486800, now seen corresponding path program 1 times [2021-11-20 07:08:42,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:08:42,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630321176] [2021-11-20 07:08:42,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:08:42,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:08:42,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:42,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:08:42,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:42,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:08:42,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:42,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-20 07:08:42,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:42,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-20 07:08:42,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:42,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-20 07:08:42,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:42,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:08:42,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:08:42,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630321176] [2021-11-20 07:08:42,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630321176] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:08:42,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:08:42,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:08:42,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290556709] [2021-11-20 07:08:42,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:08:42,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:08:42,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:08:42,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:08:42,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:08:42,961 INFO L87 Difference]: Start difference. First operand 2923 states and 5204 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:08:45,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:08:45,704 INFO L93 Difference]: Finished difference Result 4734 states and 8088 transitions. [2021-11-20 07:08:45,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 07:08:45,705 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-11-20 07:08:45,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:08:45,730 INFO L225 Difference]: With dead ends: 4734 [2021-11-20 07:08:45,730 INFO L226 Difference]: Without dead ends: 3948 [2021-11-20 07:08:45,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-11-20 07:08:45,736 INFO L933 BasicCegarLoop]: 4663 mSDtfsCounter, 5060 mSDsluCounter, 17243 mSDsCounter, 0 mSdLazyCounter, 2143 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5075 SdHoareTripleChecker+Valid, 21906 SdHoareTripleChecker+Invalid, 2221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:08:45,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5075 Valid, 21906 Invalid, 2221 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [78 Valid, 2143 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-20 07:08:45,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3948 states. [2021-11-20 07:08:45,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3948 to 3431. [2021-11-20 07:08:45,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3431 states, 3305 states have (on average 1.7537065052950076) internal successors, (5796), 3311 states have internal predecessors, (5796), 90 states have call successors, (90), 30 states have call predecessors, (90), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2021-11-20 07:08:45,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3431 states to 3431 states and 5989 transitions. [2021-11-20 07:08:45,894 INFO L78 Accepts]: Start accepts. Automaton has 3431 states and 5989 transitions. Word has length 134 [2021-11-20 07:08:45,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:08:45,895 INFO L470 AbstractCegarLoop]: Abstraction has 3431 states and 5989 transitions. [2021-11-20 07:08:45,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:08:45,895 INFO L276 IsEmpty]: Start isEmpty. Operand 3431 states and 5989 transitions. [2021-11-20 07:08:45,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-20 07:08:45,898 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:08:45,898 INFO L514 BasicCegarLoop]: 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] [2021-11-20 07:08:45,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 07:08:45,899 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:08:45,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:08:45,899 INFO L85 PathProgramCache]: Analyzing trace with hash 221869550, now seen corresponding path program 1 times [2021-11-20 07:08:45,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:08:45,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347081892] [2021-11-20 07:08:45,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:08:45,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:08:45,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:45,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:08:45,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:45,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:08:45,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:46,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-20 07:08:46,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:46,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-20 07:08:46,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:46,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-20 07:08:46,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:46,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:08:46,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:08:46,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347081892] [2021-11-20 07:08:46,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347081892] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:08:46,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:08:46,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:08:46,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634363974] [2021-11-20 07:08:46,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:08:46,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:08:46,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:08:46,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:08:46,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:08:46,059 INFO L87 Difference]: Start difference. First operand 3431 states and 5989 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:08:47,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:08:47,468 INFO L93 Difference]: Finished difference Result 5228 states and 8858 transitions. [2021-11-20 07:08:47,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:08:47,469 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-11-20 07:08:47,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:08:47,494 INFO L225 Difference]: With dead ends: 5228 [2021-11-20 07:08:47,495 INFO L226 Difference]: Without dead ends: 3934 [2021-11-20 07:08:47,501 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:08:47,502 INFO L933 BasicCegarLoop]: 4402 mSDtfsCounter, 4865 mSDsluCounter, 12408 mSDsCounter, 0 mSdLazyCounter, 922 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4881 SdHoareTripleChecker+Valid, 16810 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-20 07:08:47,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4881 Valid, 16810 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 922 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-20 07:08:47,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3934 states. [2021-11-20 07:08:47,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3934 to 3431. [2021-11-20 07:08:47,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3431 states, 3305 states have (on average 1.7521936459909229) internal successors, (5791), 3311 states have internal predecessors, (5791), 90 states have call successors, (90), 30 states have call predecessors, (90), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2021-11-20 07:08:47,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3431 states to 3431 states and 5984 transitions. [2021-11-20 07:08:47,695 INFO L78 Accepts]: Start accepts. Automaton has 3431 states and 5984 transitions. Word has length 134 [2021-11-20 07:08:47,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:08:47,696 INFO L470 AbstractCegarLoop]: Abstraction has 3431 states and 5984 transitions. [2021-11-20 07:08:47,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:08:47,696 INFO L276 IsEmpty]: Start isEmpty. Operand 3431 states and 5984 transitions. [2021-11-20 07:08:47,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-20 07:08:47,700 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:08:47,700 INFO L514 BasicCegarLoop]: 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] [2021-11-20 07:08:47,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 07:08:47,700 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:08:47,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:08:47,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1909481172, now seen corresponding path program 1 times [2021-11-20 07:08:47,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:08:47,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245417252] [2021-11-20 07:08:47,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:08:47,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:08:47,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:47,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:08:47,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:47,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:08:47,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:47,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-20 07:08:47,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:47,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-20 07:08:47,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:47,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-20 07:08:47,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:47,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:08:47,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:08:47,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245417252] [2021-11-20 07:08:47,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245417252] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:08:47,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:08:47,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:08:47,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389988671] [2021-11-20 07:08:47,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:08:47,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:08:47,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:08:47,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:08:47,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:08:47,833 INFO L87 Difference]: Start difference. First operand 3431 states and 5984 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:08:49,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:08:49,158 INFO L93 Difference]: Finished difference Result 5222 states and 8831 transitions. [2021-11-20 07:08:49,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:08:49,159 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-11-20 07:08:49,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:08:49,186 INFO L225 Difference]: With dead ends: 5222 [2021-11-20 07:08:49,186 INFO L226 Difference]: Without dead ends: 3928 [2021-11-20 07:08:49,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:08:49,193 INFO L933 BasicCegarLoop]: 4398 mSDtfsCounter, 4863 mSDsluCounter, 12408 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4879 SdHoareTripleChecker+Valid, 16806 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-20 07:08:49,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4879 Valid, 16806 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-20 07:08:49,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3928 states. [2021-11-20 07:08:49,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3928 to 3431. [2021-11-20 07:08:49,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3431 states, 3305 states have (on average 1.7506807866868381) internal successors, (5786), 3311 states have internal predecessors, (5786), 90 states have call successors, (90), 30 states have call predecessors, (90), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2021-11-20 07:08:49,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3431 states to 3431 states and 5979 transitions. [2021-11-20 07:08:49,399 INFO L78 Accepts]: Start accepts. Automaton has 3431 states and 5979 transitions. Word has length 134 [2021-11-20 07:08:49,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:08:49,400 INFO L470 AbstractCegarLoop]: Abstraction has 3431 states and 5979 transitions. [2021-11-20 07:08:49,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:08:49,401 INFO L276 IsEmpty]: Start isEmpty. Operand 3431 states and 5979 transitions. [2021-11-20 07:08:49,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-20 07:08:49,404 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:08:49,404 INFO L514 BasicCegarLoop]: 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] [2021-11-20 07:08:49,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 07:08:49,405 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:08:49,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:08:49,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1346901550, now seen corresponding path program 1 times [2021-11-20 07:08:49,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:08:49,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19931830] [2021-11-20 07:08:49,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:08:49,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:08:49,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:49,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:08:49,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:49,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:08:49,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:49,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-20 07:08:49,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:49,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-20 07:08:49,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:49,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-20 07:08:49,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:49,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:08:49,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:08:49,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19931830] [2021-11-20 07:08:49,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19931830] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:08:49,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:08:49,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:08:49,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069511881] [2021-11-20 07:08:49,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:08:49,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:08:49,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:08:49,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:08:49,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:08:49,569 INFO L87 Difference]: Start difference. First operand 3431 states and 5979 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:08:51,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:08:51,006 INFO L93 Difference]: Finished difference Result 5216 states and 8804 transitions. [2021-11-20 07:08:51,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:08:51,007 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-11-20 07:08:51,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:08:51,026 INFO L225 Difference]: With dead ends: 5216 [2021-11-20 07:08:51,026 INFO L226 Difference]: Without dead ends: 3922 [2021-11-20 07:08:51,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:08:51,033 INFO L933 BasicCegarLoop]: 4394 mSDtfsCounter, 4743 mSDsluCounter, 16508 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4759 SdHoareTripleChecker+Valid, 20902 SdHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:08:51,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4759 Valid, 20902 Invalid, 1098 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 1018 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-20 07:08:51,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3922 states. [2021-11-20 07:08:51,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3922 to 3431. [2021-11-20 07:08:51,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3431 states, 3305 states have (on average 1.7491679273827534) internal successors, (5781), 3311 states have internal predecessors, (5781), 90 states have call successors, (90), 30 states have call predecessors, (90), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2021-11-20 07:08:51,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3431 states to 3431 states and 5974 transitions. [2021-11-20 07:08:51,230 INFO L78 Accepts]: Start accepts. Automaton has 3431 states and 5974 transitions. Word has length 134 [2021-11-20 07:08:51,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:08:51,235 INFO L470 AbstractCegarLoop]: Abstraction has 3431 states and 5974 transitions. [2021-11-20 07:08:51,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:08:51,236 INFO L276 IsEmpty]: Start isEmpty. Operand 3431 states and 5974 transitions. [2021-11-20 07:08:51,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-20 07:08:51,239 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:08:51,239 INFO L514 BasicCegarLoop]: 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] [2021-11-20 07:08:51,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 07:08:51,240 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:08:51,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:08:51,240 INFO L85 PathProgramCache]: Analyzing trace with hash -626263828, now seen corresponding path program 1 times [2021-11-20 07:08:51,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:08:51,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767207290] [2021-11-20 07:08:51,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:08:51,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:08:51,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:51,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:08:51,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:51,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:08:51,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:51,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-20 07:08:51,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:51,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-20 07:08:51,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:51,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-20 07:08:51,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:51,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:08:51,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:08:51,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767207290] [2021-11-20 07:08:51,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767207290] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:08:51,380 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:08:51,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:08:51,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670079072] [2021-11-20 07:08:51,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:08:51,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:08:51,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:08:51,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:08:51,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:08:51,383 INFO L87 Difference]: Start difference. First operand 3431 states and 5974 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:08:53,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:08:53,818 INFO L93 Difference]: Finished difference Result 6562 states and 10871 transitions. [2021-11-20 07:08:53,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 07:08:53,818 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-11-20 07:08:53,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:08:53,848 INFO L225 Difference]: With dead ends: 6562 [2021-11-20 07:08:53,849 INFO L226 Difference]: Without dead ends: 5268 [2021-11-20 07:08:53,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-11-20 07:08:53,855 INFO L933 BasicCegarLoop]: 4635 mSDtfsCounter, 5029 mSDsluCounter, 17243 mSDsCounter, 0 mSdLazyCounter, 2069 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5044 SdHoareTripleChecker+Valid, 21878 SdHoareTripleChecker+Invalid, 2146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 2069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-20 07:08:53,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5044 Valid, 21878 Invalid, 2146 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [77 Valid, 2069 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-20 07:08:53,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5268 states. [2021-11-20 07:08:54,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5268 to 4469. [2021-11-20 07:08:54,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4469 states, 4247 states have (on average 1.6993171650576877) internal successors, (7217), 4257 states have internal predecessors, (7217), 158 states have call successors, (158), 54 states have call predecessors, (158), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2021-11-20 07:08:54,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4469 states to 4469 states and 7568 transitions. [2021-11-20 07:08:54,100 INFO L78 Accepts]: Start accepts. Automaton has 4469 states and 7568 transitions. Word has length 134 [2021-11-20 07:08:54,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:08:54,101 INFO L470 AbstractCegarLoop]: Abstraction has 4469 states and 7568 transitions. [2021-11-20 07:08:54,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:08:54,101 INFO L276 IsEmpty]: Start isEmpty. Operand 4469 states and 7568 transitions. [2021-11-20 07:08:54,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-20 07:08:54,105 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:08:54,105 INFO L514 BasicCegarLoop]: 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] [2021-11-20 07:08:54,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 07:08:54,105 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:08:54,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:08:54,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1526842990, now seen corresponding path program 1 times [2021-11-20 07:08:54,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:08:54,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75099823] [2021-11-20 07:08:54,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:08:54,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:08:54,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:54,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:08:54,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:54,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:08:54,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:54,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-20 07:08:54,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:54,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-20 07:08:54,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:54,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-20 07:08:54,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:54,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:08:54,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:08:54,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75099823] [2021-11-20 07:08:54,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75099823] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:08:54,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:08:54,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:08:54,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774311530] [2021-11-20 07:08:54,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:08:54,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:08:54,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:08:54,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:08:54,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:08:54,262 INFO L87 Difference]: Start difference. First operand 4469 states and 7568 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:08:56,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:08:56,866 INFO L93 Difference]: Finished difference Result 11236 states and 18097 transitions. [2021-11-20 07:08:56,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 07:08:56,866 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-11-20 07:08:56,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:08:56,895 INFO L225 Difference]: With dead ends: 11236 [2021-11-20 07:08:56,895 INFO L226 Difference]: Without dead ends: 8904 [2021-11-20 07:08:56,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-11-20 07:08:56,906 INFO L933 BasicCegarLoop]: 4628 mSDtfsCounter, 5358 mSDsluCounter, 17235 mSDsCounter, 0 mSdLazyCounter, 2054 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5382 SdHoareTripleChecker+Valid, 21863 SdHoareTripleChecker+Invalid, 2136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-20 07:08:56,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5382 Valid, 21863 Invalid, 2136 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [82 Valid, 2054 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-20 07:08:56,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8904 states. [2021-11-20 07:08:57,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8904 to 6520. [2021-11-20 07:08:57,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6520 states, 6114 states have (on average 1.6465489041543997) internal successors, (10067), 6132 states have internal predecessors, (10067), 286 states have call successors, (286), 102 states have call predecessors, (286), 118 states have return successors, (383), 301 states have call predecessors, (383), 286 states have call successors, (383) [2021-11-20 07:08:57,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6520 states to 6520 states and 10736 transitions. [2021-11-20 07:08:57,323 INFO L78 Accepts]: Start accepts. Automaton has 6520 states and 10736 transitions. Word has length 134 [2021-11-20 07:08:57,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:08:57,323 INFO L470 AbstractCegarLoop]: Abstraction has 6520 states and 10736 transitions. [2021-11-20 07:08:57,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:08:57,323 INFO L276 IsEmpty]: Start isEmpty. Operand 6520 states and 10736 transitions. [2021-11-20 07:08:57,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-20 07:08:57,328 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:08:57,329 INFO L514 BasicCegarLoop]: 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] [2021-11-20 07:08:57,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 07:08:57,329 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:08:57,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:08:57,330 INFO L85 PathProgramCache]: Analyzing trace with hash 903561388, now seen corresponding path program 1 times [2021-11-20 07:08:57,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:08:57,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020981120] [2021-11-20 07:08:57,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:08:57,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:08:57,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:57,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:08:57,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:57,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:08:57,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:57,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-20 07:08:57,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:57,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-20 07:08:57,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:57,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-20 07:08:57,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:08:57,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:08:57,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:08:57,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020981120] [2021-11-20 07:08:57,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020981120] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:08:57,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:08:57,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:08:57,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284659990] [2021-11-20 07:08:57,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:08:57,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:08:57,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:08:57,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:08:57,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:08:57,460 INFO L87 Difference]: Start difference. First operand 6520 states and 10736 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:09:00,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:09:00,761 INFO L93 Difference]: Finished difference Result 19345 states and 30719 transitions. [2021-11-20 07:09:00,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 07:09:00,761 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-11-20 07:09:00,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:09:00,814 INFO L225 Difference]: With dead ends: 19345 [2021-11-20 07:09:00,814 INFO L226 Difference]: Without dead ends: 14962 [2021-11-20 07:09:00,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-11-20 07:09:00,834 INFO L933 BasicCegarLoop]: 4599 mSDtfsCounter, 5162 mSDsluCounter, 16806 mSDsCounter, 0 mSdLazyCounter, 2226 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5176 SdHoareTripleChecker+Valid, 21405 SdHoareTripleChecker+Invalid, 2331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 2226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:09:00,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5176 Valid, 21405 Invalid, 2331 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [105 Valid, 2226 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-20 07:09:00,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14962 states. [2021-11-20 07:09:01,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14962 to 10533. [2021-11-20 07:09:01,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10533 states, 9767 states have (on average 1.6018224633971536) internal successors, (15645), 9801 states have internal predecessors, (15645), 534 states have call successors, (534), 198 states have call predecessors, (534), 230 states have return successors, (809), 565 states have call predecessors, (809), 534 states have call successors, (809) [2021-11-20 07:09:01,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10533 states to 10533 states and 16988 transitions. [2021-11-20 07:09:01,727 INFO L78 Accepts]: Start accepts. Automaton has 10533 states and 16988 transitions. Word has length 134 [2021-11-20 07:09:01,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:09:01,727 INFO L470 AbstractCegarLoop]: Abstraction has 10533 states and 16988 transitions. [2021-11-20 07:09:01,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:09:01,728 INFO L276 IsEmpty]: Start isEmpty. Operand 10533 states and 16988 transitions. [2021-11-20 07:09:01,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-20 07:09:01,735 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:09:01,735 INFO L514 BasicCegarLoop]: 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] [2021-11-20 07:09:01,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 07:09:01,736 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:09:01,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:09:01,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1022002862, now seen corresponding path program 1 times [2021-11-20 07:09:01,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:09:01,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487372347] [2021-11-20 07:09:01,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:09:01,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:09:01,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:01,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:09:01,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:01,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:09:01,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:01,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-20 07:09:01,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:01,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-20 07:09:01,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:01,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-20 07:09:01,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:01,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:09:01,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:09:01,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487372347] [2021-11-20 07:09:01,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487372347] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:09:01,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:09:01,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:09:01,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116683126] [2021-11-20 07:09:01,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:09:01,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:09:01,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:09:01,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:09:01,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:09:01,859 INFO L87 Difference]: Start difference. First operand 10533 states and 16988 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:09:05,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:09:05,928 INFO L93 Difference]: Finished difference Result 35028 states and 55309 transitions. [2021-11-20 07:09:05,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 07:09:05,929 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-11-20 07:09:05,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:09:06,021 INFO L225 Difference]: With dead ends: 35028 [2021-11-20 07:09:06,022 INFO L226 Difference]: Without dead ends: 26632 [2021-11-20 07:09:06,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-11-20 07:09:06,054 INFO L933 BasicCegarLoop]: 4616 mSDtfsCounter, 5281 mSDsluCounter, 17235 mSDsCounter, 0 mSdLazyCounter, 2035 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5305 SdHoareTripleChecker+Valid, 21851 SdHoareTripleChecker+Invalid, 2120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-20 07:09:06,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5305 Valid, 21851 Invalid, 2120 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [85 Valid, 2035 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-20 07:09:06,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26632 states. [2021-11-20 07:09:07,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26632 to 18622. [2021-11-20 07:09:07,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18622 states, 17152 states have (on average 1.5708372201492538) internal successors, (26943), 17218 states have internal predecessors, (26943), 1014 states have call successors, (1014), 390 states have call predecessors, (1014), 454 states have return successors, (1807), 1077 states have call predecessors, (1807), 1014 states have call successors, (1807) [2021-11-20 07:09:07,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18622 states to 18622 states and 29764 transitions. [2021-11-20 07:09:07,574 INFO L78 Accepts]: Start accepts. Automaton has 18622 states and 29764 transitions. Word has length 134 [2021-11-20 07:09:07,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:09:07,575 INFO L470 AbstractCegarLoop]: Abstraction has 18622 states and 29764 transitions. [2021-11-20 07:09:07,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:09:07,575 INFO L276 IsEmpty]: Start isEmpty. Operand 18622 states and 29764 transitions. [2021-11-20 07:09:07,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-20 07:09:07,588 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:09:07,589 INFO L514 BasicCegarLoop]: 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] [2021-11-20 07:09:07,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-20 07:09:07,589 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:09:07,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:09:07,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1883670420, now seen corresponding path program 1 times [2021-11-20 07:09:07,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:09:07,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248296541] [2021-11-20 07:09:07,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:09:07,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:09:07,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:07,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:09:07,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:07,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:09:07,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:07,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-20 07:09:07,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:07,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-20 07:09:07,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:07,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-20 07:09:07,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:07,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:09:07,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:09:07,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248296541] [2021-11-20 07:09:07,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248296541] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:09:07,708 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:09:07,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:09:07,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386884039] [2021-11-20 07:09:07,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:09:07,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:09:07,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:09:07,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:09:07,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:09:07,710 INFO L87 Difference]: Start difference. First operand 18622 states and 29764 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:09:13,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:09:13,719 INFO L93 Difference]: Finished difference Result 65049 states and 103135 transitions. [2021-11-20 07:09:13,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 07:09:13,720 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-11-20 07:09:13,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:09:14,076 INFO L225 Difference]: With dead ends: 65049 [2021-11-20 07:09:14,076 INFO L226 Difference]: Without dead ends: 48564 [2021-11-20 07:09:14,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-11-20 07:09:14,128 INFO L933 BasicCegarLoop]: 4683 mSDtfsCounter, 5067 mSDsluCounter, 17235 mSDsCounter, 0 mSdLazyCounter, 2281 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5081 SdHoareTripleChecker+Valid, 21918 SdHoareTripleChecker+Invalid, 2363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-20 07:09:14,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5081 Valid, 21918 Invalid, 2363 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [82 Valid, 2281 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-20 07:09:14,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48564 states. [2021-11-20 07:09:16,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48564 to 34832. [2021-11-20 07:09:16,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34832 states, 31986 states have (on average 1.5537735259175889) internal successors, (49699), 32116 states have internal predecessors, (49699), 1942 states have call successors, (1942), 774 states have call predecessors, (1942), 902 states have return successors, (4257), 2069 states have call predecessors, (4257), 1942 states have call successors, (4257) [2021-11-20 07:09:17,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34832 states to 34832 states and 55898 transitions. [2021-11-20 07:09:17,088 INFO L78 Accepts]: Start accepts. Automaton has 34832 states and 55898 transitions. Word has length 134 [2021-11-20 07:09:17,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:09:17,088 INFO L470 AbstractCegarLoop]: Abstraction has 34832 states and 55898 transitions. [2021-11-20 07:09:17,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:09:17,089 INFO L276 IsEmpty]: Start isEmpty. Operand 34832 states and 55898 transitions. [2021-11-20 07:09:17,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-20 07:09:17,117 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:09:17,117 INFO L514 BasicCegarLoop]: 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] [2021-11-20 07:09:17,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-20 07:09:17,118 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:09:17,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:09:17,118 INFO L85 PathProgramCache]: Analyzing trace with hash 544588202, now seen corresponding path program 1 times [2021-11-20 07:09:17,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:09:17,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224335843] [2021-11-20 07:09:17,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:09:17,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:09:17,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:17,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:09:17,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:17,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:09:17,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:17,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-20 07:09:17,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:17,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-20 07:09:17,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:17,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-20 07:09:17,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:17,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:09:17,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:09:17,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224335843] [2021-11-20 07:09:17,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224335843] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:09:17,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:09:17,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:09:17,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780969884] [2021-11-20 07:09:17,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:09:17,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:09:17,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:09:17,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:09:17,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:09:17,245 INFO L87 Difference]: Start difference. First operand 34832 states and 55898 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:09:21,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:09:21,919 INFO L93 Difference]: Finished difference Result 76944 states and 124691 transitions. [2021-11-20 07:09:21,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:09:21,919 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-11-20 07:09:21,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:09:22,100 INFO L225 Difference]: With dead ends: 76944 [2021-11-20 07:09:22,100 INFO L226 Difference]: Without dead ends: 44249 [2021-11-20 07:09:22,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:09:22,371 INFO L933 BasicCegarLoop]: 4371 mSDtfsCounter, 4745 mSDsluCounter, 16506 mSDsCounter, 0 mSdLazyCounter, 964 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4761 SdHoareTripleChecker+Valid, 20877 SdHoareTripleChecker+Invalid, 1049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-20 07:09:22,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4761 Valid, 20877 Invalid, 1049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 964 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-20 07:09:22,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44249 states. [2021-11-20 07:09:25,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44249 to 34832. [2021-11-20 07:09:25,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34832 states, 31986 states have (on average 1.5497405114737697) internal successors, (49570), 32116 states have internal predecessors, (49570), 1942 states have call successors, (1942), 774 states have call predecessors, (1942), 902 states have return successors, (4257), 2069 states have call predecessors, (4257), 1942 states have call successors, (4257) [2021-11-20 07:09:25,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34832 states to 34832 states and 55769 transitions. [2021-11-20 07:09:25,148 INFO L78 Accepts]: Start accepts. Automaton has 34832 states and 55769 transitions. Word has length 134 [2021-11-20 07:09:25,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:09:25,149 INFO L470 AbstractCegarLoop]: Abstraction has 34832 states and 55769 transitions. [2021-11-20 07:09:25,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:09:25,149 INFO L276 IsEmpty]: Start isEmpty. Operand 34832 states and 55769 transitions. [2021-11-20 07:09:25,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-20 07:09:25,174 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:09:25,174 INFO L514 BasicCegarLoop]: 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] [2021-11-20 07:09:25,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-20 07:09:25,174 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:09:25,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:09:25,175 INFO L85 PathProgramCache]: Analyzing trace with hash -762554196, now seen corresponding path program 1 times [2021-11-20 07:09:25,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:09:25,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398992411] [2021-11-20 07:09:25,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:09:25,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:09:25,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:25,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:09:25,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:25,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:09:25,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:25,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-20 07:09:25,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:25,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-20 07:09:25,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:25,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-20 07:09:25,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:25,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:09:25,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:09:25,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398992411] [2021-11-20 07:09:25,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398992411] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:09:25,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:09:25,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:09:25,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032853814] [2021-11-20 07:09:25,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:09:25,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:09:25,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:09:25,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:09:25,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:09:25,346 INFO L87 Difference]: Start difference. First operand 34832 states and 55769 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:09:35,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:09:35,271 INFO L93 Difference]: Finished difference Result 123015 states and 196927 transitions. [2021-11-20 07:09:35,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 07:09:35,271 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2021-11-20 07:09:35,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:09:35,527 INFO L225 Difference]: With dead ends: 123015 [2021-11-20 07:09:35,527 INFO L226 Difference]: Without dead ends: 90320 [2021-11-20 07:09:35,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-11-20 07:09:35,608 INFO L933 BasicCegarLoop]: 4640 mSDtfsCounter, 5039 mSDsluCounter, 17235 mSDsCounter, 0 mSdLazyCounter, 2184 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5053 SdHoareTripleChecker+Valid, 21875 SdHoareTripleChecker+Invalid, 2266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-20 07:09:35,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5053 Valid, 21875 Invalid, 2266 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [82 Valid, 2184 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-20 07:09:35,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90320 states. [2021-11-20 07:09:41,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90320 to 67314. [2021-11-20 07:09:41,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67314 states, 61780 states have (on average 1.54001294917449) internal successors, (95142), 62038 states have internal predecessors, (95142), 3734 states have call successors, (3734), 1542 states have call predecessors, (3734), 1798 states have return successors, (10551), 3989 states have call predecessors, (10551), 3734 states have call successors, (10551) [2021-11-20 07:09:41,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67314 states to 67314 states and 109427 transitions. [2021-11-20 07:09:41,856 INFO L78 Accepts]: Start accepts. Automaton has 67314 states and 109427 transitions. Word has length 134 [2021-11-20 07:09:41,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:09:41,856 INFO L470 AbstractCegarLoop]: Abstraction has 67314 states and 109427 transitions. [2021-11-20 07:09:41,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:09:41,857 INFO L276 IsEmpty]: Start isEmpty. Operand 67314 states and 109427 transitions. [2021-11-20 07:09:41,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-20 07:09:41,889 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:09:41,889 INFO L514 BasicCegarLoop]: 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] [2021-11-20 07:09:41,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-20 07:09:41,890 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:09:41,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:09:41,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1134942570, now seen corresponding path program 1 times [2021-11-20 07:09:41,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:09:41,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836542021] [2021-11-20 07:09:41,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:09:41,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:09:41,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:41,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:09:41,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:41,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-20 07:09:41,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:41,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-20 07:09:41,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:41,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-20 07:09:41,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:42,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-11-20 07:09:42,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:09:42,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:09:42,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:09:42,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836542021] [2021-11-20 07:09:42,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836542021] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:09:42,006 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:09:42,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:09:42,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457511898] [2021-11-20 07:09:42,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:09:42,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:09:42,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:09:42,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:09:42,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:09:42,008 INFO L87 Difference]: Start difference. First operand 67314 states and 109427 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)