./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label49+token_ring.08.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label49+token_ring.08.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 aaf13b6417c3a40bd252c0d41a10a8dacb34259e9c2292b8e82d477fe2508ef5 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 19:06:27,198 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 19:06:27,214 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 19:06:27,238 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 19:06:27,239 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 19:06:27,239 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 19:06:27,240 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 19:06:27,241 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 19:06:27,242 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 19:06:27,243 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 19:06:27,244 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 19:06:27,244 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 19:06:27,245 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 19:06:27,245 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 19:06:27,246 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 19:06:27,247 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 19:06:27,247 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 19:06:27,248 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 19:06:27,249 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 19:06:27,250 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 19:06:27,251 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 19:06:27,252 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 19:06:27,253 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 19:06:27,254 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 19:06:27,255 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 19:06:27,256 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 19:06:27,256 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 19:06:27,257 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 19:06:27,257 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 19:06:27,258 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 19:06:27,258 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 19:06:27,258 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 19:06:27,259 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 19:06:27,259 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 19:06:27,260 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 19:06:27,260 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 19:06:27,261 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 19:06:27,261 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 19:06:27,261 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 19:06:27,262 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 19:06:27,262 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 19:06:27,263 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 19:06:27,276 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 19:06:27,276 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 19:06:27,276 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 19:06:27,276 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 19:06:27,277 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 19:06:27,277 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 19:06:27,277 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 19:06:27,277 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 19:06:27,278 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 19:06:27,278 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 19:06:27,278 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 19:06:27,278 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 19:06:27,278 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 19:06:27,278 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 19:06:27,279 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 19:06:27,279 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 19:06:27,279 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 19:06:27,279 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 19:06:27,279 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 19:06:27,279 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 19:06:27,279 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 19:06:27,279 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 19:06:27,280 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 19:06:27,280 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 19:06:27,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 19:06:27,280 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 19:06:27,280 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 19:06:27,280 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 19:06:27,281 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 19:06:27,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 19:06:27,281 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 19:06:27,281 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 19:06:27,281 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 19:06:27,281 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 19:06:27,281 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aaf13b6417c3a40bd252c0d41a10a8dacb34259e9c2292b8e82d477fe2508ef5 [2021-12-17 19:06:27,457 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 19:06:27,470 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 19:06:27,472 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 19:06:27,473 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 19:06:27,473 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 19:06:27,474 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label49+token_ring.08.cil-2.c [2021-12-17 19:06:27,535 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/677fa1758/d1e1fc8d812d440a80281e8667cbe1af/FLAG89ad287e6 [2021-12-17 19:06:28,317 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 19:06:28,318 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.08.cil-2.c [2021-12-17 19:06:28,357 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/677fa1758/d1e1fc8d812d440a80281e8667cbe1af/FLAG89ad287e6 [2021-12-17 19:06:28,870 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/677fa1758/d1e1fc8d812d440a80281e8667cbe1af [2021-12-17 19:06:28,872 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 19:06:28,873 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 19:06:28,873 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 19:06:28,873 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 19:06:28,875 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 19:06:28,876 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 07:06:28" (1/1) ... [2021-12-17 19:06:28,876 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1772e733 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:06:28, skipping insertion in model container [2021-12-17 19:06:28,876 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 07:06:28" (1/1) ... [2021-12-17 19:06:28,884 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 19:06:29,059 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 19:06:30,329 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.08.cil-2.c[380593,380606] [2021-12-17 19:06:30,348 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.08.cil-2.c[383339,383352] [2021-12-17 19:06:30,523 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 19:06:30,533 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 19:06:31,304 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.08.cil-2.c[380593,380606] [2021-12-17 19:06:31,308 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.08.cil-2.c[383339,383352] [2021-12-17 19:06:31,339 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 19:06:31,387 INFO L208 MainTranslator]: Completed translation [2021-12-17 19:06:31,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:06:31 WrapperNode [2021-12-17 19:06:31,388 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 19:06:31,389 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 19:06:31,389 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 19:06:31,389 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 19:06:31,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:06:31" (1/1) ... [2021-12-17 19:06:31,482 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:06:31" (1/1) ... [2021-12-17 19:06:31,830 INFO L137 Inliner]: procedures = 60, calls = 66, calls flagged for inlining = 37, calls inlined = 37, statements flattened = 12972 [2021-12-17 19:06:31,830 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 19:06:31,831 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 19:06:31,831 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 19:06:31,831 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 19:06:31,839 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:06:31" (1/1) ... [2021-12-17 19:06:31,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:06:31" (1/1) ... [2021-12-17 19:06:31,886 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:06:31" (1/1) ... [2021-12-17 19:06:31,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:06:31" (1/1) ... [2021-12-17 19:06:32,082 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:06:31" (1/1) ... [2021-12-17 19:06:32,146 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:06:31" (1/1) ... [2021-12-17 19:06:32,196 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:06:31" (1/1) ... [2021-12-17 19:06:32,342 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 19:06:32,356 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 19:06:32,356 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 19:06:32,357 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 19:06:32,358 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:06:31" (1/1) ... [2021-12-17 19:06:32,363 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 19:06:32,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 19:06:32,421 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-17 19:06:32,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-17 19:06:32,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 19:06:32,525 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-17 19:06:32,525 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-17 19:06:32,525 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-17 19:06:32,525 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-17 19:06:32,525 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-17 19:06:32,525 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-17 19:06:32,525 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-17 19:06:32,525 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-17 19:06:32,526 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-17 19:06:32,526 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-17 19:06:32,526 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-17 19:06:32,526 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-17 19:06:32,526 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-17 19:06:32,526 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-17 19:06:32,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 19:06:32,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 19:06:32,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 19:06:32,712 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 19:06:32,713 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 19:06:37,378 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 19:06:37,400 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 19:06:37,400 INFO L301 CfgBuilder]: Removed 12 assume(true) statements. [2021-12-17 19:06:37,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 07:06:37 BoogieIcfgContainer [2021-12-17 19:06:37,403 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 19:06:37,405 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 19:06:37,405 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 19:06:37,407 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 19:06:37,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 07:06:28" (1/3) ... [2021-12-17 19:06:37,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25b56061 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 07:06:37, skipping insertion in model container [2021-12-17 19:06:37,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:06:31" (2/3) ... [2021-12-17 19:06:37,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25b56061 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 07:06:37, skipping insertion in model container [2021-12-17 19:06:37,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 07:06:37" (3/3) ... [2021-12-17 19:06:37,409 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.08.cil-2.c [2021-12-17 19:06:37,412 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 19:06:37,412 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-17 19:06:37,447 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 19:06:37,452 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 [2021-12-17 19:06:37,452 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-17 19:06:37,490 INFO L276 IsEmpty]: Start isEmpty. Operand has 2473 states, 2439 states have (on average 1.848708487084871) internal successors, (4509), 2444 states have internal predecessors, (4509), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2021-12-17 19:06:37,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-17 19:06:37,502 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:06:37,503 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, 1] [2021-12-17 19:06:37,503 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:06:37,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:06:37,507 INFO L85 PathProgramCache]: Analyzing trace with hash -970277371, now seen corresponding path program 1 times [2021-12-17 19:06:37,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:06:37,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490830406] [2021-12-17 19:06:37,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:06:37,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:06:37,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:37,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:06:37,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:37,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 19:06:37,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:37,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 19:06:37,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:37,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 19:06:37,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:37,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-17 19:06:37,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:37,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:06:37,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:06:37,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490830406] [2021-12-17 19:06:37,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490830406] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:06:37,894 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:06:37,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 19:06:37,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439865405] [2021-12-17 19:06:37,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:06:37,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 19:06:37,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:06:37,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 19:06:37,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 19:06:37,935 INFO L87 Difference]: Start difference. First operand has 2473 states, 2439 states have (on average 1.848708487084871) internal successors, (4509), 2444 states have internal predecessors, (4509), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) 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, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:06:38,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:06:38,811 INFO L93 Difference]: Finished difference Result 5037 states and 9272 transitions. [2021-12-17 19:06:38,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 19:06:38,813 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, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2021-12-17 19:06:38,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:06:38,834 INFO L225 Difference]: With dead ends: 5037 [2021-12-17 19:06:38,834 INFO L226 Difference]: Without dead ends: 2503 [2021-12-17 19:06:38,842 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 [2021-12-17 19:06:38,845 INFO L933 BasicCegarLoop]: 4511 mSDtfsCounter, 748 mSDsluCounter, 12395 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 16906 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 19:06:38,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [768 Valid, 16906 Invalid, 551 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [56 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-17 19:06:38,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2503 states. [2021-12-17 19:06:38,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2503 to 2405. [2021-12-17 19:06:38,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2405 states, 2373 states have (on average 1.8348082595870205) internal successors, (4354), 2376 states have internal predecessors, (4354), 24 states have call successors, (24), 7 states have call predecessors, (24), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-17 19:06:38,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2405 states to 2405 states and 4400 transitions. [2021-12-17 19:06:38,966 INFO L78 Accepts]: Start accepts. Automaton has 2405 states and 4400 transitions. Word has length 135 [2021-12-17 19:06:38,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:06:38,967 INFO L470 AbstractCegarLoop]: Abstraction has 2405 states and 4400 transitions. [2021-12-17 19:06:38,967 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, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:06:38,968 INFO L276 IsEmpty]: Start isEmpty. Operand 2405 states and 4400 transitions. [2021-12-17 19:06:38,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-17 19:06:38,979 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:06:38,980 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, 1] [2021-12-17 19:06:38,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 19:06:38,980 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:06:38,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:06:38,983 INFO L85 PathProgramCache]: Analyzing trace with hash -540619065, now seen corresponding path program 1 times [2021-12-17 19:06:38,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:06:38,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361603940] [2021-12-17 19:06:38,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:06:38,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:06:39,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:39,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:06:39,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:39,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 19:06:39,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:39,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 19:06:39,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:39,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 19:06:39,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:39,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-17 19:06:39,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:39,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:06:39,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:06:39,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361603940] [2021-12-17 19:06:39,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361603940] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:06:39,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:06:39,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 19:06:39,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682810817] [2021-12-17 19:06:39,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:06:39,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 19:06:39,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:06:39,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 19:06:39,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 19:06:39,251 INFO L87 Difference]: Start difference. First operand 2405 states and 4400 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:06:40,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:06:40,972 INFO L93 Difference]: Finished difference Result 3147 states and 5591 transitions. [2021-12-17 19:06:40,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 19:06:40,973 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2021-12-17 19:06:40,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:06:40,987 INFO L225 Difference]: With dead ends: 3147 [2021-12-17 19:06:40,988 INFO L226 Difference]: Without dead ends: 2879 [2021-12-17 19:06:40,989 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 [2021-12-17 19:06:40,990 INFO L933 BasicCegarLoop]: 4478 mSDtfsCounter, 5066 mSDsluCounter, 12654 mSDsCounter, 0 mSdLazyCounter, 1385 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5081 SdHoareTripleChecker+Valid, 17132 SdHoareTripleChecker+Invalid, 1493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-17 19:06:40,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5081 Valid, 17132 Invalid, 1493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1385 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-17 19:06:40,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2879 states. [2021-12-17 19:06:41,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2879 to 2682. [2021-12-17 19:06:41,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2682 states, 2626 states have (on average 1.8111195734958112) internal successors, (4756), 2630 states have internal predecessors, (4756), 41 states have call successors, (41), 13 states have call predecessors, (41), 13 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2021-12-17 19:06:41,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2682 states to 2682 states and 4839 transitions. [2021-12-17 19:06:41,057 INFO L78 Accepts]: Start accepts. Automaton has 2682 states and 4839 transitions. Word has length 135 [2021-12-17 19:06:41,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:06:41,058 INFO L470 AbstractCegarLoop]: Abstraction has 2682 states and 4839 transitions. [2021-12-17 19:06:41,058 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:06:41,058 INFO L276 IsEmpty]: Start isEmpty. Operand 2682 states and 4839 transitions. [2021-12-17 19:06:41,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-17 19:06:41,060 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:06:41,060 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, 1] [2021-12-17 19:06:41,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 19:06:41,060 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:06:41,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:06:41,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1902621501, now seen corresponding path program 1 times [2021-12-17 19:06:41,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:06:41,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274073214] [2021-12-17 19:06:41,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:06:41,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:06:41,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:41,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:06:41,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:41,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 19:06:41,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:41,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 19:06:41,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:41,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 19:06:41,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:41,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-17 19:06:41,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:41,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:06:41,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:06:41,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274073214] [2021-12-17 19:06:41,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274073214] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:06:41,169 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:06:41,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:06:41,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957820002] [2021-12-17 19:06:41,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:06:41,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:06:41,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:06:41,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:06:41,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:06:41,171 INFO L87 Difference]: Start difference. First operand 2682 states and 4839 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:06:43,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:06:43,114 INFO L93 Difference]: Finished difference Result 3810 states and 6649 transitions. [2021-12-17 19:06:43,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 19:06:43,114 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2021-12-17 19:06:43,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:06:43,128 INFO L225 Difference]: With dead ends: 3810 [2021-12-17 19:06:43,129 INFO L226 Difference]: Without dead ends: 3265 [2021-12-17 19:06:43,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 19:06:43,133 INFO L933 BasicCegarLoop]: 4701 mSDtfsCounter, 5078 mSDsluCounter, 17330 mSDsCounter, 0 mSdLazyCounter, 2177 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5093 SdHoareTripleChecker+Valid, 22031 SdHoareTripleChecker+Invalid, 2249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 2177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-17 19:06:43,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5093 Valid, 22031 Invalid, 2249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 2177 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-17 19:06:43,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3265 states. [2021-12-17 19:06:43,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3265 to 2940. [2021-12-17 19:06:43,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2940 states, 2860 states have (on average 1.7902097902097902) internal successors, (5120), 2865 states have internal predecessors, (5120), 58 states have call successors, (58), 19 states have call predecessors, (58), 20 states have return successors, (61), 57 states have call predecessors, (61), 56 states have call successors, (61) [2021-12-17 19:06:43,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2940 states to 2940 states and 5239 transitions. [2021-12-17 19:06:43,204 INFO L78 Accepts]: Start accepts. Automaton has 2940 states and 5239 transitions. Word has length 135 [2021-12-17 19:06:43,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:06:43,205 INFO L470 AbstractCegarLoop]: Abstraction has 2940 states and 5239 transitions. [2021-12-17 19:06:43,205 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:06:43,206 INFO L276 IsEmpty]: Start isEmpty. Operand 2940 states and 5239 transitions. [2021-12-17 19:06:43,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-17 19:06:43,207 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:06:43,208 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, 1] [2021-12-17 19:06:43,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 19:06:43,208 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:06:43,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:06:43,209 INFO L85 PathProgramCache]: Analyzing trace with hash 26310725, now seen corresponding path program 1 times [2021-12-17 19:06:43,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:06:43,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761266401] [2021-12-17 19:06:43,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:06:43,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:06:43,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:43,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:06:43,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:43,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 19:06:43,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:43,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 19:06:43,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:43,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 19:06:43,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:43,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-17 19:06:43,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:43,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:06:43,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:06:43,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761266401] [2021-12-17 19:06:43,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761266401] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:06:43,314 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:06:43,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:06:43,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004625789] [2021-12-17 19:06:43,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:06:43,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:06:43,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:06:43,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:06:43,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:06:43,315 INFO L87 Difference]: Start difference. First operand 2940 states and 5239 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:06:45,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:06:45,529 INFO L93 Difference]: Finished difference Result 4787 states and 8197 transitions. [2021-12-17 19:06:45,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 19:06:45,529 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2021-12-17 19:06:45,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:06:45,541 INFO L225 Difference]: With dead ends: 4787 [2021-12-17 19:06:45,542 INFO L226 Difference]: Without dead ends: 3984 [2021-12-17 19:06:45,544 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 [2021-12-17 19:06:45,545 INFO L933 BasicCegarLoop]: 4506 mSDtfsCounter, 5157 mSDsluCounter, 16833 mSDsCounter, 0 mSdLazyCounter, 1934 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5172 SdHoareTripleChecker+Valid, 21339 SdHoareTripleChecker+Invalid, 2041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-17 19:06:45,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5172 Valid, 21339 Invalid, 2041 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [107 Valid, 1934 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-17 19:06:45,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3984 states. [2021-12-17 19:06:45,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3984 to 3457. [2021-12-17 19:06:45,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3457 states, 3329 states have (on average 1.756984079303094) internal successors, (5849), 3336 states have internal predecessors, (5849), 92 states have call successors, (92), 31 states have call predecessors, (92), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2021-12-17 19:06:45,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3457 states to 3457 states and 6044 transitions. [2021-12-17 19:06:45,642 INFO L78 Accepts]: Start accepts. Automaton has 3457 states and 6044 transitions. Word has length 135 [2021-12-17 19:06:45,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:06:45,648 INFO L470 AbstractCegarLoop]: Abstraction has 3457 states and 6044 transitions. [2021-12-17 19:06:45,648 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:06:45,649 INFO L276 IsEmpty]: Start isEmpty. Operand 3457 states and 6044 transitions. [2021-12-17 19:06:45,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-17 19:06:45,654 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:06:45,654 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, 1] [2021-12-17 19:06:45,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 19:06:45,656 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:06:45,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:06:45,656 INFO L85 PathProgramCache]: Analyzing trace with hash 2028196995, now seen corresponding path program 1 times [2021-12-17 19:06:45,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:06:45,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662718653] [2021-12-17 19:06:45,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:06:45,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:06:45,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:45,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:06:45,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:45,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 19:06:45,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:45,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 19:06:45,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:45,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 19:06:45,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:45,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-17 19:06:45,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:45,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:06:45,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:06:45,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662718653] [2021-12-17 19:06:45,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662718653] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:06:45,795 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:06:45,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:06:45,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480679974] [2021-12-17 19:06:45,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:06:45,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:06:45,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:06:45,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:06:45,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:06:45,796 INFO L87 Difference]: Start difference. First operand 3457 states and 6044 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:06:47,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:06:47,553 INFO L93 Difference]: Finished difference Result 6668 states and 11162 transitions. [2021-12-17 19:06:47,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 19:06:47,553 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2021-12-17 19:06:47,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:06:47,571 INFO L225 Difference]: With dead ends: 6668 [2021-12-17 19:06:47,571 INFO L226 Difference]: Without dead ends: 5348 [2021-12-17 19:06:47,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 19:06:47,581 INFO L933 BasicCegarLoop]: 4689 mSDtfsCounter, 5073 mSDsluCounter, 17326 mSDsCounter, 0 mSdLazyCounter, 2180 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5088 SdHoareTripleChecker+Valid, 22015 SdHoareTripleChecker+Invalid, 2257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 2180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-17 19:06:47,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5088 Valid, 22015 Invalid, 2257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 2180 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-17 19:06:47,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5348 states. [2021-12-17 19:06:47,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5348 to 4492. [2021-12-17 19:06:47,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4492 states, 4268 states have (on average 1.7120431115276475) internal successors, (7307), 4279 states have internal predecessors, (7307), 160 states have call successors, (160), 55 states have call predecessors, (160), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2021-12-17 19:06:47,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4492 states to 4492 states and 7660 transitions. [2021-12-17 19:06:47,709 INFO L78 Accepts]: Start accepts. Automaton has 4492 states and 7660 transitions. Word has length 135 [2021-12-17 19:06:47,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:06:47,709 INFO L470 AbstractCegarLoop]: Abstraction has 4492 states and 7660 transitions. [2021-12-17 19:06:47,710 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:06:47,710 INFO L276 IsEmpty]: Start isEmpty. Operand 4492 states and 7660 transitions. [2021-12-17 19:06:47,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-17 19:06:47,712 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:06:47,713 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, 1] [2021-12-17 19:06:47,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 19:06:47,713 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:06:47,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:06:47,713 INFO L85 PathProgramCache]: Analyzing trace with hash -539625339, now seen corresponding path program 1 times [2021-12-17 19:06:47,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:06:47,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180248933] [2021-12-17 19:06:47,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:06:47,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:06:47,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:47,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:06:47,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:47,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 19:06:47,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:47,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 19:06:47,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:47,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 19:06:47,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:47,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-17 19:06:47,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:47,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:06:47,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:06:47,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180248933] [2021-12-17 19:06:47,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180248933] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:06:47,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:06:47,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:06:47,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421941296] [2021-12-17 19:06:47,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:06:47,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:06:47,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:06:47,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:06:47,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:06:47,837 INFO L87 Difference]: Start difference. First operand 4492 states and 7660 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:06:50,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:06:50,003 INFO L93 Difference]: Finished difference Result 10422 states and 17096 transitions. [2021-12-17 19:06:50,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 19:06:50,004 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2021-12-17 19:06:50,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:06:50,039 INFO L225 Difference]: With dead ends: 10422 [2021-12-17 19:06:50,039 INFO L226 Difference]: Without dead ends: 8067 [2021-12-17 19:06:50,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-17 19:06:50,049 INFO L933 BasicCegarLoop]: 4681 mSDtfsCounter, 5068 mSDsluCounter, 17326 mSDsCounter, 0 mSdLazyCounter, 2160 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5083 SdHoareTripleChecker+Valid, 22007 SdHoareTripleChecker+Invalid, 2238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-17 19:06:50,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5083 Valid, 22007 Invalid, 2238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2160 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-17 19:06:50,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8067 states. [2021-12-17 19:06:50,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8067 to 6576. [2021-12-17 19:06:50,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6576 states, 6160 states have (on average 1.663474025974026) internal successors, (10247), 6179 states have internal predecessors, (10247), 296 states have call successors, (296), 103 states have call predecessors, (296), 118 states have return successors, (391), 309 states have call predecessors, (391), 294 states have call successors, (391) [2021-12-17 19:06:50,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6576 states to 6576 states and 10934 transitions. [2021-12-17 19:06:50,276 INFO L78 Accepts]: Start accepts. Automaton has 6576 states and 10934 transitions. Word has length 135 [2021-12-17 19:06:50,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:06:50,276 INFO L470 AbstractCegarLoop]: Abstraction has 6576 states and 10934 transitions. [2021-12-17 19:06:50,276 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:06:50,276 INFO L276 IsEmpty]: Start isEmpty. Operand 6576 states and 10934 transitions. [2021-12-17 19:06:50,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-17 19:06:50,280 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:06:50,280 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, 1] [2021-12-17 19:06:50,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 19:06:50,280 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:06:50,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:06:50,281 INFO L85 PathProgramCache]: Analyzing trace with hash 2107979015, now seen corresponding path program 1 times [2021-12-17 19:06:50,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:06:50,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177537412] [2021-12-17 19:06:50,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:06:50,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:06:50,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:50,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:06:50,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:50,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 19:06:50,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:50,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 19:06:50,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:50,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 19:06:50,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:50,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-17 19:06:50,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:50,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:06:50,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:06:50,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177537412] [2021-12-17 19:06:50,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177537412] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:06:50,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:06:50,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:06:50,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490038999] [2021-12-17 19:06:50,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:06:50,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:06:50,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:06:50,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:06:50,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:06:50,405 INFO L87 Difference]: Start difference. First operand 6576 states and 10934 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:06:52,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:06:52,743 INFO L93 Difference]: Finished difference Result 17948 states and 29056 transitions. [2021-12-17 19:06:52,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 19:06:52,744 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2021-12-17 19:06:52,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:06:52,809 INFO L225 Difference]: With dead ends: 17948 [2021-12-17 19:06:52,809 INFO L226 Difference]: Without dead ends: 13509 [2021-12-17 19:06:52,830 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 [2021-12-17 19:06:52,833 INFO L933 BasicCegarLoop]: 4676 mSDtfsCounter, 5067 mSDsluCounter, 17326 mSDsCounter, 0 mSdLazyCounter, 2152 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5082 SdHoareTripleChecker+Valid, 22002 SdHoareTripleChecker+Invalid, 2230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-17 19:06:52,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5082 Valid, 22002 Invalid, 2230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2152 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-17 19:06:52,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13509 states. [2021-12-17 19:06:53,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13509 to 10757. [2021-12-17 19:06:53,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10757 states, 9957 states have (on average 1.6214723310234007) internal successors, (16145), 9992 states have internal predecessors, (16145), 568 states have call successors, (568), 199 states have call predecessors, (568), 230 states have return successors, (841), 597 states have call predecessors, (841), 566 states have call successors, (841) [2021-12-17 19:06:53,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10757 states to 10757 states and 17554 transitions. [2021-12-17 19:06:53,623 INFO L78 Accepts]: Start accepts. Automaton has 10757 states and 17554 transitions. Word has length 135 [2021-12-17 19:06:53,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:06:53,623 INFO L470 AbstractCegarLoop]: Abstraction has 10757 states and 17554 transitions. [2021-12-17 19:06:53,625 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:06:53,625 INFO L276 IsEmpty]: Start isEmpty. Operand 10757 states and 17554 transitions. [2021-12-17 19:06:53,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-17 19:06:53,629 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:06:53,630 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, 1] [2021-12-17 19:06:53,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 19:06:53,630 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:06:53,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:06:53,630 INFO L85 PathProgramCache]: Analyzing trace with hash -23371707, now seen corresponding path program 1 times [2021-12-17 19:06:53,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:06:53,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894555051] [2021-12-17 19:06:53,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:06:53,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:06:53,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:53,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:06:53,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:53,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 19:06:53,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:53,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 19:06:53,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:53,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 19:06:53,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:53,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-17 19:06:53,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:53,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:06:53,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:06:53,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894555051] [2021-12-17 19:06:53,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894555051] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:06:53,730 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:06:53,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:06:53,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426206631] [2021-12-17 19:06:53,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:06:53,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:06:53,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:06:53,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:06:53,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:06:53,732 INFO L87 Difference]: Start difference. First operand 10757 states and 17554 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:06:54,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:06:54,882 INFO L93 Difference]: Finished difference Result 22268 states and 36159 transitions. [2021-12-17 19:06:54,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:06:54,882 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2021-12-17 19:06:54,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:06:54,918 INFO L225 Difference]: With dead ends: 22268 [2021-12-17 19:06:54,919 INFO L226 Difference]: Without dead ends: 13648 [2021-12-17 19:06:54,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 19:06:54,944 INFO L933 BasicCegarLoop]: 4410 mSDtfsCounter, 4885 mSDsluCounter, 12435 mSDsCounter, 0 mSdLazyCounter, 922 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4901 SdHoareTripleChecker+Valid, 16845 SdHoareTripleChecker+Invalid, 1027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 19:06:54,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4901 Valid, 16845 Invalid, 1027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 922 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 19:06:54,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13648 states. [2021-12-17 19:06:55,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13648 to 10757. [2021-12-17 19:06:55,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10757 states, 9957 states have (on average 1.6181580797428945) internal successors, (16112), 9992 states have internal predecessors, (16112), 568 states have call successors, (568), 199 states have call predecessors, (568), 230 states have return successors, (841), 597 states have call predecessors, (841), 566 states have call successors, (841) [2021-12-17 19:06:55,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10757 states to 10757 states and 17521 transitions. [2021-12-17 19:06:55,426 INFO L78 Accepts]: Start accepts. Automaton has 10757 states and 17521 transitions. Word has length 135 [2021-12-17 19:06:55,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:06:55,427 INFO L470 AbstractCegarLoop]: Abstraction has 10757 states and 17521 transitions. [2021-12-17 19:06:55,427 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:06:55,427 INFO L276 IsEmpty]: Start isEmpty. Operand 10757 states and 17521 transitions. [2021-12-17 19:06:55,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-17 19:06:55,432 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:06:55,433 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, 1] [2021-12-17 19:06:55,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 19:06:55,433 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:06:55,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:06:55,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1061956281, now seen corresponding path program 1 times [2021-12-17 19:06:55,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:06:55,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423907001] [2021-12-17 19:06:55,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:06:55,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:06:55,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:55,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:06:55,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:55,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 19:06:55,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:55,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 19:06:55,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:55,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 19:06:55,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:55,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-17 19:06:55,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:55,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:06:55,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:06:55,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423907001] [2021-12-17 19:06:55,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423907001] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:06:55,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:06:55,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:06:55,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725963151] [2021-12-17 19:06:55,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:06:55,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:06:55,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:06:55,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:06:55,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:06:55,551 INFO L87 Difference]: Start difference. First operand 10757 states and 17521 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:06:56,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:06:56,882 INFO L93 Difference]: Finished difference Result 22234 states and 35992 transitions. [2021-12-17 19:06:56,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:06:56,883 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2021-12-17 19:06:56,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:06:56,920 INFO L225 Difference]: With dead ends: 22234 [2021-12-17 19:06:56,921 INFO L226 Difference]: Without dead ends: 13614 [2021-12-17 19:06:56,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 19:06:56,943 INFO L933 BasicCegarLoop]: 4406 mSDtfsCounter, 4764 mSDsluCounter, 16544 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4780 SdHoareTripleChecker+Valid, 20950 SdHoareTripleChecker+Invalid, 1107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 19:06:56,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4780 Valid, 20950 Invalid, 1107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1026 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 19:06:56,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13614 states. [2021-12-17 19:06:57,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13614 to 10757. [2021-12-17 19:06:57,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10757 states, 9957 states have (on average 1.6148438284623883) internal successors, (16079), 9992 states have internal predecessors, (16079), 568 states have call successors, (568), 199 states have call predecessors, (568), 230 states have return successors, (841), 597 states have call predecessors, (841), 566 states have call successors, (841) [2021-12-17 19:06:57,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10757 states to 10757 states and 17488 transitions. [2021-12-17 19:06:57,305 INFO L78 Accepts]: Start accepts. Automaton has 10757 states and 17488 transitions. Word has length 135 [2021-12-17 19:06:57,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:06:57,306 INFO L470 AbstractCegarLoop]: Abstraction has 10757 states and 17488 transitions. [2021-12-17 19:06:57,306 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:06:57,306 INFO L276 IsEmpty]: Start isEmpty. Operand 10757 states and 17488 transitions. [2021-12-17 19:06:57,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-17 19:06:57,311 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:06:57,311 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, 1] [2021-12-17 19:06:57,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 19:06:57,312 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:06:57,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:06:57,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1259845637, now seen corresponding path program 1 times [2021-12-17 19:06:57,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:06:57,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279868176] [2021-12-17 19:06:57,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:06:57,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:06:57,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:57,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:06:57,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:57,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 19:06:57,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:57,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 19:06:57,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:57,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 19:06:57,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:57,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-17 19:06:57,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:57,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:06:57,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:06:57,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279868176] [2021-12-17 19:06:57,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279868176] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:06:57,397 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:06:57,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:06:57,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888351343] [2021-12-17 19:06:57,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:06:57,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:06:57,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:06:57,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:06:57,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:06:57,399 INFO L87 Difference]: Start difference. First operand 10757 states and 17488 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:06:58,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:06:58,959 INFO L93 Difference]: Finished difference Result 22200 states and 35825 transitions. [2021-12-17 19:06:58,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:06:58,960 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2021-12-17 19:06:58,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:06:59,026 INFO L225 Difference]: With dead ends: 22200 [2021-12-17 19:06:59,026 INFO L226 Difference]: Without dead ends: 13580 [2021-12-17 19:06:59,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 19:06:59,048 INFO L933 BasicCegarLoop]: 4402 mSDtfsCounter, 4760 mSDsluCounter, 16542 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4776 SdHoareTripleChecker+Valid, 20944 SdHoareTripleChecker+Invalid, 1099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 19:06:59,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4776 Valid, 20944 Invalid, 1099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 19:06:59,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13580 states. [2021-12-17 19:06:59,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13580 to 10757. [2021-12-17 19:06:59,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10757 states, 9957 states have (on average 1.611529577181882) internal successors, (16046), 9992 states have internal predecessors, (16046), 568 states have call successors, (568), 199 states have call predecessors, (568), 230 states have return successors, (841), 597 states have call predecessors, (841), 566 states have call successors, (841) [2021-12-17 19:06:59,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10757 states to 10757 states and 17455 transitions. [2021-12-17 19:06:59,682 INFO L78 Accepts]: Start accepts. Automaton has 10757 states and 17455 transitions. Word has length 135 [2021-12-17 19:06:59,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:06:59,682 INFO L470 AbstractCegarLoop]: Abstraction has 10757 states and 17455 transitions. [2021-12-17 19:06:59,682 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:06:59,683 INFO L276 IsEmpty]: Start isEmpty. Operand 10757 states and 17455 transitions. [2021-12-17 19:06:59,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-17 19:06:59,690 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:06:59,690 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, 1] [2021-12-17 19:06:59,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 19:06:59,690 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:06:59,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:06:59,691 INFO L85 PathProgramCache]: Analyzing trace with hash -882014841, now seen corresponding path program 1 times [2021-12-17 19:06:59,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:06:59,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225290958] [2021-12-17 19:06:59,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:06:59,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:06:59,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:59,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:06:59,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:59,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 19:06:59,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:59,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 19:06:59,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:59,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 19:06:59,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:59,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-17 19:06:59,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:06:59,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:06:59,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:06:59,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225290958] [2021-12-17 19:06:59,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225290958] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:06:59,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:06:59,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:06:59,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838797238] [2021-12-17 19:06:59,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:06:59,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:06:59,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:06:59,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:06:59,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:06:59,825 INFO L87 Difference]: Start difference. First operand 10757 states and 17455 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:03,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:03,076 INFO L93 Difference]: Finished difference Result 36385 states and 57816 transitions. [2021-12-17 19:07:03,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 19:07:03,076 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2021-12-17 19:07:03,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:03,149 INFO L225 Difference]: With dead ends: 36385 [2021-12-17 19:07:03,149 INFO L226 Difference]: Without dead ends: 27765 [2021-12-17 19:07:03,169 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 [2021-12-17 19:07:03,170 INFO L933 BasicCegarLoop]: 4613 mSDtfsCounter, 5185 mSDsluCounter, 16853 mSDsCounter, 0 mSdLazyCounter, 2246 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5199 SdHoareTripleChecker+Valid, 21466 SdHoareTripleChecker+Invalid, 2354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:03,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5199 Valid, 21466 Invalid, 2354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2246 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-17 19:07:03,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27765 states. [2021-12-17 19:07:03,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27765 to 18833. [2021-12-17 19:07:03,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18833 states, 17297 states have (on average 1.5756489564664393) internal successors, (27254), 17364 states have internal predecessors, (27254), 1080 states have call successors, (1080), 391 states have call predecessors, (1080), 454 states have return successors, (1871), 1141 states have call predecessors, (1871), 1078 states have call successors, (1871) [2021-12-17 19:07:03,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18833 states to 18833 states and 30205 transitions. [2021-12-17 19:07:03,937 INFO L78 Accepts]: Start accepts. Automaton has 18833 states and 30205 transitions. Word has length 135 [2021-12-17 19:07:03,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:07:03,938 INFO L470 AbstractCegarLoop]: Abstraction has 18833 states and 30205 transitions. [2021-12-17 19:07:03,938 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:03,938 INFO L276 IsEmpty]: Start isEmpty. Operand 18833 states and 30205 transitions. [2021-12-17 19:07:03,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-17 19:07:03,947 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:03,947 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, 1] [2021-12-17 19:07:03,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 19:07:03,948 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:03,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:03,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1505296443, now seen corresponding path program 1 times [2021-12-17 19:07:03,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:03,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490952696] [2021-12-17 19:07:03,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:03,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:03,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:03,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:03,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:03,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 19:07:03,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:04,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 19:07:04,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:04,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 19:07:04,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:04,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-17 19:07:04,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:04,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:04,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:04,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490952696] [2021-12-17 19:07:04,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490952696] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:04,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:04,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:07:04,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799545716] [2021-12-17 19:07:04,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:04,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:07:04,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:04,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:07:04,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:07:04,041 INFO L87 Difference]: Start difference. First operand 18833 states and 30205 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:05,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:05,742 INFO L93 Difference]: Finished difference Result 40748 states and 65512 transitions. [2021-12-17 19:07:05,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:07:05,742 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2021-12-17 19:07:05,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:05,813 INFO L225 Difference]: With dead ends: 40748 [2021-12-17 19:07:05,814 INFO L226 Difference]: Without dead ends: 24052 [2021-12-17 19:07:05,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 19:07:05,850 INFO L933 BasicCegarLoop]: 4393 mSDtfsCounter, 4881 mSDsluCounter, 12433 mSDsCounter, 0 mSdLazyCounter, 886 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4897 SdHoareTripleChecker+Valid, 16826 SdHoareTripleChecker+Invalid, 996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:05,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4897 Valid, 16826 Invalid, 996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 886 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 19:07:05,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24052 states. [2021-12-17 19:07:06,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24052 to 18833. [2021-12-17 19:07:06,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18833 states, 17297 states have (on average 1.5718910793779268) internal successors, (27189), 17364 states have internal predecessors, (27189), 1080 states have call successors, (1080), 391 states have call predecessors, (1080), 454 states have return successors, (1871), 1141 states have call predecessors, (1871), 1078 states have call successors, (1871) [2021-12-17 19:07:06,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18833 states to 18833 states and 30140 transitions. [2021-12-17 19:07:06,632 INFO L78 Accepts]: Start accepts. Automaton has 18833 states and 30140 transitions. Word has length 135 [2021-12-17 19:07:06,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:07:06,632 INFO L470 AbstractCegarLoop]: Abstraction has 18833 states and 30140 transitions. [2021-12-17 19:07:06,633 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:06,633 INFO L276 IsEmpty]: Start isEmpty. Operand 18833 states and 30140 transitions. [2021-12-17 19:07:06,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-17 19:07:06,643 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:06,643 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, 1] [2021-12-17 19:07:06,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 19:07:06,644 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:06,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:06,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1386854969, now seen corresponding path program 1 times [2021-12-17 19:07:06,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:06,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532456755] [2021-12-17 19:07:06,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:06,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:06,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:06,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:06,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:06,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 19:07:06,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:06,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 19:07:06,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:06,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 19:07:06,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:06,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-17 19:07:06,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:06,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:06,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:06,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532456755] [2021-12-17 19:07:06,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532456755] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:06,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:06,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:07:06,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231581363] [2021-12-17 19:07:06,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:06,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:07:06,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:06,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:07:06,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:07:06,732 INFO L87 Difference]: Start difference. First operand 18833 states and 30140 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:08,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:08,405 INFO L93 Difference]: Finished difference Result 40616 states and 65053 transitions. [2021-12-17 19:07:08,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:07:08,405 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2021-12-17 19:07:08,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:08,479 INFO L225 Difference]: With dead ends: 40616 [2021-12-17 19:07:08,479 INFO L226 Difference]: Without dead ends: 23920 [2021-12-17 19:07:08,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 19:07:08,533 INFO L933 BasicCegarLoop]: 4387 mSDtfsCounter, 4877 mSDsluCounter, 12433 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4893 SdHoareTripleChecker+Valid, 16820 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:08,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4893 Valid, 16820 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 872 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 19:07:08,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23920 states. [2021-12-17 19:07:09,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23920 to 18833. [2021-12-17 19:07:09,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18833 states, 17297 states have (on average 1.5681332022894143) internal successors, (27124), 17364 states have internal predecessors, (27124), 1080 states have call successors, (1080), 391 states have call predecessors, (1080), 454 states have return successors, (1871), 1141 states have call predecessors, (1871), 1078 states have call successors, (1871) [2021-12-17 19:07:09,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18833 states to 18833 states and 30075 transitions. [2021-12-17 19:07:09,439 INFO L78 Accepts]: Start accepts. Automaton has 18833 states and 30075 transitions. Word has length 135 [2021-12-17 19:07:09,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:07:09,440 INFO L470 AbstractCegarLoop]: Abstraction has 18833 states and 30075 transitions. [2021-12-17 19:07:09,440 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:09,440 INFO L276 IsEmpty]: Start isEmpty. Operand 18833 states and 30075 transitions. [2021-12-17 19:07:09,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-17 19:07:09,448 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:09,448 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, 1] [2021-12-17 19:07:09,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-17 19:07:09,449 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:09,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:09,449 INFO L85 PathProgramCache]: Analyzing trace with hash 874718281, now seen corresponding path program 1 times [2021-12-17 19:07:09,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:09,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194974355] [2021-12-17 19:07:09,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:09,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:09,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:09,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:09,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:09,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 19:07:09,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:09,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 19:07:09,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:09,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 19:07:09,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:09,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-17 19:07:09,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:09,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:09,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:09,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194974355] [2021-12-17 19:07:09,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194974355] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:09,533 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:09,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:07:09,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373265324] [2021-12-17 19:07:09,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:09,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:07:09,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:09,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:07:09,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:07:09,534 INFO L87 Difference]: Start difference. First operand 18833 states and 30075 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:11,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:11,306 INFO L93 Difference]: Finished difference Result 40550 states and 64726 transitions. [2021-12-17 19:07:11,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:07:11,307 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2021-12-17 19:07:11,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:11,368 INFO L225 Difference]: With dead ends: 40550 [2021-12-17 19:07:11,369 INFO L226 Difference]: Without dead ends: 23854 [2021-12-17 19:07:11,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 19:07:11,405 INFO L933 BasicCegarLoop]: 4383 mSDtfsCounter, 4756 mSDsluCounter, 16542 mSDsCounter, 0 mSdLazyCounter, 964 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4772 SdHoareTripleChecker+Valid, 20925 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:11,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4772 Valid, 20925 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 964 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 19:07:11,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23854 states. [2021-12-17 19:07:12,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23854 to 18833. [2021-12-17 19:07:12,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18833 states, 17297 states have (on average 1.5643753252009018) internal successors, (27059), 17364 states have internal predecessors, (27059), 1080 states have call successors, (1080), 391 states have call predecessors, (1080), 454 states have return successors, (1871), 1141 states have call predecessors, (1871), 1078 states have call successors, (1871) [2021-12-17 19:07:12,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18833 states to 18833 states and 30010 transitions. [2021-12-17 19:07:12,243 INFO L78 Accepts]: Start accepts. Automaton has 18833 states and 30010 transitions. Word has length 135 [2021-12-17 19:07:12,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:07:12,243 INFO L470 AbstractCegarLoop]: Abstraction has 18833 states and 30010 transitions. [2021-12-17 19:07:12,243 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:12,243 INFO L276 IsEmpty]: Start isEmpty. Operand 18833 states and 30010 transitions. [2021-12-17 19:07:12,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-17 19:07:12,250 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:12,250 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, 1] [2021-12-17 19:07:12,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-17 19:07:12,251 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:12,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:12,251 INFO L85 PathProgramCache]: Analyzing trace with hash -991990393, now seen corresponding path program 1 times [2021-12-17 19:07:12,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:12,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936830269] [2021-12-17 19:07:12,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:12,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:12,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:12,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:12,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:12,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 19:07:12,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:12,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 19:07:12,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:12,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 19:07:12,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:12,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-17 19:07:12,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:12,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:12,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:12,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936830269] [2021-12-17 19:07:12,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936830269] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:12,335 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:12,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:07:12,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971381489] [2021-12-17 19:07:12,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:12,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:07:12,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:12,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:07:12,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:07:12,337 INFO L87 Difference]: Start difference. First operand 18833 states and 30010 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:16,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:16,513 INFO L93 Difference]: Finished difference Result 64051 states and 101336 transitions. [2021-12-17 19:07:16,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 19:07:16,514 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2021-12-17 19:07:16,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:16,665 INFO L225 Difference]: With dead ends: 64051 [2021-12-17 19:07:16,665 INFO L226 Difference]: Without dead ends: 47355 [2021-12-17 19:07:16,710 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 [2021-12-17 19:07:16,710 INFO L933 BasicCegarLoop]: 4666 mSDtfsCounter, 5045 mSDsluCounter, 17318 mSDsCounter, 0 mSdLazyCounter, 2196 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5059 SdHoareTripleChecker+Valid, 21984 SdHoareTripleChecker+Invalid, 2279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:16,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5059 Valid, 21984 Invalid, 2279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 2196 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-17 19:07:16,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47355 states. [2021-12-17 19:07:18,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47355 to 35526. [2021-12-17 19:07:18,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35526 states, 32550 states have (on average 1.5423963133640552) internal successors, (50205), 32681 states have internal predecessors, (50205), 2072 states have call successors, (2072), 775 states have call predecessors, (2072), 902 states have return successors, (4385), 2197 states have call predecessors, (4385), 2070 states have call successors, (4385) [2021-12-17 19:07:18,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35526 states to 35526 states and 56662 transitions. [2021-12-17 19:07:18,815 INFO L78 Accepts]: Start accepts. Automaton has 35526 states and 56662 transitions. Word has length 135 [2021-12-17 19:07:18,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:07:18,815 INFO L470 AbstractCegarLoop]: Abstraction has 35526 states and 56662 transitions. [2021-12-17 19:07:18,815 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:18,815 INFO L276 IsEmpty]: Start isEmpty. Operand 35526 states and 56662 transitions. [2021-12-17 19:07:18,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-17 19:07:18,828 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:18,829 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, 1] [2021-12-17 19:07:18,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-17 19:07:18,829 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:18,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:18,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1995834505, now seen corresponding path program 1 times [2021-12-17 19:07:18,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:18,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998241940] [2021-12-17 19:07:18,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:18,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:18,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:18,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:18,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:18,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 19:07:18,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:18,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 19:07:18,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:18,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 19:07:18,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:18,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-17 19:07:18,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:18,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:18,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:18,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998241940] [2021-12-17 19:07:18,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998241940] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:18,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:18,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:07:18,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317075481] [2021-12-17 19:07:18,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:18,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:07:18,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:18,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:07:18,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:07:18,976 INFO L87 Difference]: Start difference. First operand 35526 states and 56662 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:25,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:25,706 INFO L93 Difference]: Finished difference Result 123206 states and 197062 transitions. [2021-12-17 19:07:25,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 19:07:25,708 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2021-12-17 19:07:25,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:26,104 INFO L225 Difference]: With dead ends: 123206 [2021-12-17 19:07:26,105 INFO L226 Difference]: Without dead ends: 89817 [2021-12-17 19:07:26,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-17 19:07:26,206 INFO L933 BasicCegarLoop]: 4617 mSDtfsCounter, 5078 mSDsluCounter, 17318 mSDsCounter, 0 mSdLazyCounter, 1994 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5102 SdHoareTripleChecker+Valid, 21935 SdHoareTripleChecker+Invalid, 2080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:26,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5102 Valid, 21935 Invalid, 2080 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 1994 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-17 19:07:26,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89817 states. [2021-12-17 19:07:30,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89817 to 68839. [2021-12-17 19:07:30,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68839 states, 63047 states have (on average 1.5312861833235523) internal successors, (96543), 63306 states have internal predecessors, (96543), 3992 states have call successors, (3992), 1543 states have call predecessors, (3992), 1798 states have return successors, (10807), 4245 states have call predecessors, (10807), 3990 states have call successors, (10807) [2021-12-17 19:07:30,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68839 states to 68839 states and 111342 transitions. [2021-12-17 19:07:30,691 INFO L78 Accepts]: Start accepts. Automaton has 68839 states and 111342 transitions. Word has length 135 [2021-12-17 19:07:30,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:07:30,691 INFO L470 AbstractCegarLoop]: Abstraction has 68839 states and 111342 transitions. [2021-12-17 19:07:30,691 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:30,691 INFO L276 IsEmpty]: Start isEmpty. Operand 68839 states and 111342 transitions. [2021-12-17 19:07:30,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-17 19:07:30,718 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:30,718 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, 1] [2021-12-17 19:07:30,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-17 19:07:30,718 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:30,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:30,719 INFO L85 PathProgramCache]: Analyzing trace with hash -401636025, now seen corresponding path program 1 times [2021-12-17 19:07:30,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:30,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497298599] [2021-12-17 19:07:30,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:30,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:30,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:30,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:30,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:30,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 19:07:30,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:30,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 19:07:30,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:30,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 19:07:30,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:30,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-17 19:07:30,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:30,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:30,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:30,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497298599] [2021-12-17 19:07:30,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497298599] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:30,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:30,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:07:30,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271935881] [2021-12-17 19:07:30,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:30,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:07:30,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:30,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:07:30,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:07:30,811 INFO L87 Difference]: Start difference. First operand 68839 states and 111342 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:36,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:36,918 INFO L93 Difference]: Finished difference Result 152908 states and 251607 transitions. [2021-12-17 19:07:36,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:07:36,919 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2021-12-17 19:07:36,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:37,299 INFO L225 Difference]: With dead ends: 152908 [2021-12-17 19:07:37,299 INFO L226 Difference]: Without dead ends: 86206 [2021-12-17 19:07:37,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 19:07:37,444 INFO L933 BasicCegarLoop]: 4374 mSDtfsCounter, 4875 mSDsluCounter, 12433 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4891 SdHoareTripleChecker+Valid, 16807 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:37,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4891 Valid, 16807 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 19:07:37,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86206 states. [2021-12-17 19:07:41,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86206 to 68839. [2021-12-17 19:07:41,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68839 states, 63047 states have (on average 1.5272098593113075) internal successors, (96286), 63306 states have internal predecessors, (96286), 3992 states have call successors, (3992), 1543 states have call predecessors, (3992), 1798 states have return successors, (10807), 4245 states have call predecessors, (10807), 3990 states have call successors, (10807) [2021-12-17 19:07:41,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68839 states to 68839 states and 111085 transitions. [2021-12-17 19:07:41,715 INFO L78 Accepts]: Start accepts. Automaton has 68839 states and 111085 transitions. Word has length 135 [2021-12-17 19:07:41,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:07:41,715 INFO L470 AbstractCegarLoop]: Abstraction has 68839 states and 111085 transitions. [2021-12-17 19:07:41,715 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:41,715 INFO L276 IsEmpty]: Start isEmpty. Operand 68839 states and 111085 transitions. [2021-12-17 19:07:41,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-17 19:07:41,739 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:41,739 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, 1] [2021-12-17 19:07:41,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-17 19:07:41,739 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:41,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:41,740 INFO L85 PathProgramCache]: Analyzing trace with hash 629404873, now seen corresponding path program 1 times [2021-12-17 19:07:41,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:41,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638982409] [2021-12-17 19:07:41,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:41,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:41,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:41,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:41,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:41,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 19:07:41,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:41,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 19:07:41,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:41,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 19:07:41,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:41,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-17 19:07:41,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:41,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:41,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:41,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638982409] [2021-12-17 19:07:41,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638982409] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:41,829 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:41,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 19:07:41,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756092068] [2021-12-17 19:07:41,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:41,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 19:07:41,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:41,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 19:07:41,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 19:07:41,830 INFO L87 Difference]: Start difference. First operand 68839 states and 111085 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)