./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.11.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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/pc_sfifo_1.cil-2+token_ring.11.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 67b249d19bfb29e53a3ada528cfb44b497320fbfc38e7386ce56807633f41524 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 20:44:55,135 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 20:44:55,137 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 20:44:55,171 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 20:44:55,172 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 20:44:55,173 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 20:44:55,175 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 20:44:55,180 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 20:44:55,182 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 20:44:55,184 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 20:44:55,185 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 20:44:55,187 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 20:44:55,187 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 20:44:55,192 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 20:44:55,194 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 20:44:55,195 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 20:44:55,198 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 20:44:55,199 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 20:44:55,201 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 20:44:55,203 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 20:44:55,206 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 20:44:55,207 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 20:44:55,208 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 20:44:55,209 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 20:44:55,210 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 20:44:55,213 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 20:44:55,214 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 20:44:55,215 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 20:44:55,216 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 20:44:55,216 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 20:44:55,217 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 20:44:55,218 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 20:44:55,219 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 20:44:55,219 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 20:44:55,220 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 20:44:55,221 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 20:44:55,221 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 20:44:55,222 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 20:44:55,222 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 20:44:55,222 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 20:44:55,223 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 20:44:55,225 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 20:44:55,225 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 20:44:55,257 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 20:44:55,258 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 20:44:55,258 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 20:44:55,258 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 20:44:55,259 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 20:44:55,259 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 20:44:55,260 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 20:44:55,260 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 20:44:55,260 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 20:44:55,261 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 20:44:55,261 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 20:44:55,261 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 20:44:55,262 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 20:44:55,262 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 20:44:55,262 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 20:44:55,262 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 20:44:55,262 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 20:44:55,262 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 20:44:55,263 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 20:44:55,263 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 20:44:55,263 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 20:44:55,263 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 20:44:55,263 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 20:44:55,264 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 20:44:55,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 20:44:55,264 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 20:44:55,264 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 20:44:55,264 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 20:44:55,265 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 20:44:55,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 20:44:55,265 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 20:44:55,265 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 20:44:55,265 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 20:44:55,266 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67b249d19bfb29e53a3ada528cfb44b497320fbfc38e7386ce56807633f41524 [2022-07-22 20:44:55,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 20:44:55,514 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 20:44:55,516 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 20:44:55,517 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 20:44:55,517 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 20:44:55,518 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.11.cil-2.c [2022-07-22 20:44:55,580 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d8b07a5c/2ee413b036654da58d50a629966d926f/FLAGb2b58e5d0 [2022-07-22 20:44:56,017 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 20:44:56,018 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.11.cil-2.c [2022-07-22 20:44:56,051 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d8b07a5c/2ee413b036654da58d50a629966d926f/FLAGb2b58e5d0 [2022-07-22 20:44:56,543 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d8b07a5c/2ee413b036654da58d50a629966d926f [2022-07-22 20:44:56,545 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 20:44:56,546 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 20:44:56,547 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 20:44:56,548 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 20:44:56,553 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 20:44:56,554 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 08:44:56" (1/1) ... [2022-07-22 20:44:56,555 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d693ab7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:44:56, skipping insertion in model container [2022-07-22 20:44:56,555 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 08:44:56" (1/1) ... [2022-07-22 20:44:56,560 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 20:44:56,600 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 20:44:56,744 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/pc_sfifo_1.cil-2+token_ring.11.cil-2.c[913,926] [2022-07-22 20:44:56,778 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/pc_sfifo_1.cil-2+token_ring.11.cil-2.c[5977,5990] [2022-07-22 20:44:56,854 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 20:44:56,862 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 20:44:56,872 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/pc_sfifo_1.cil-2+token_ring.11.cil-2.c[913,926] [2022-07-22 20:44:56,883 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/pc_sfifo_1.cil-2+token_ring.11.cil-2.c[5977,5990] [2022-07-22 20:44:56,970 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 20:44:56,992 INFO L208 MainTranslator]: Completed translation [2022-07-22 20:44:56,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:44:56 WrapperNode [2022-07-22 20:44:56,993 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 20:44:56,994 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 20:44:56,994 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 20:44:56,995 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 20:44:57,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:44:56" (1/1) ... [2022-07-22 20:44:57,012 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:44:56" (1/1) ... [2022-07-22 20:44:57,049 INFO L137 Inliner]: procedures = 70, calls = 81, calls flagged for inlining = 45, calls inlined = 45, statements flattened = 997 [2022-07-22 20:44:57,050 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 20:44:57,050 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 20:44:57,050 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 20:44:57,051 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 20:44:57,058 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:44:56" (1/1) ... [2022-07-22 20:44:57,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:44:56" (1/1) ... [2022-07-22 20:44:57,062 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:44:56" (1/1) ... [2022-07-22 20:44:57,062 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:44:56" (1/1) ... [2022-07-22 20:44:57,077 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:44:56" (1/1) ... [2022-07-22 20:44:57,103 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:44:56" (1/1) ... [2022-07-22 20:44:57,106 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:44:56" (1/1) ... [2022-07-22 20:44:57,111 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 20:44:57,112 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 20:44:57,112 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 20:44:57,112 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 20:44:57,113 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:44:56" (1/1) ... [2022-07-22 20:44:57,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 20:44:57,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:44:57,147 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) [2022-07-22 20:44:57,148 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 [2022-07-22 20:44:57,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 20:44:57,175 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-22 20:44:57,175 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-22 20:44:57,175 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2022-07-22 20:44:57,177 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2022-07-22 20:44:57,177 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-22 20:44:57,177 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-22 20:44:57,177 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-22 20:44:57,178 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-22 20:44:57,178 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-22 20:44:57,178 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-22 20:44:57,178 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-22 20:44:57,178 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-22 20:44:57,178 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-22 20:44:57,179 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-22 20:44:57,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 20:44:57,179 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-22 20:44:57,179 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-22 20:44:57,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 20:44:57,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 20:44:57,180 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-22 20:44:57,180 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-22 20:44:57,284 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 20:44:57,285 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 20:44:58,024 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 20:44:58,042 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 20:44:58,043 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2022-07-22 20:44:58,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 08:44:58 BoogieIcfgContainer [2022-07-22 20:44:58,046 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 20:44:58,048 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 20:44:58,048 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 20:44:58,051 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 20:44:58,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 08:44:56" (1/3) ... [2022-07-22 20:44:58,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b07f682 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 08:44:58, skipping insertion in model container [2022-07-22 20:44:58,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:44:56" (2/3) ... [2022-07-22 20:44:58,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b07f682 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 08:44:58, skipping insertion in model container [2022-07-22 20:44:58,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 08:44:58" (3/3) ... [2022-07-22 20:44:58,053 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.11.cil-2.c [2022-07-22 20:44:58,065 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 20:44:58,065 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 20:44:58,133 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 20:44:58,139 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5bae8e8e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1ce5f5fc [2022-07-22 20:44:58,139 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-22 20:44:58,144 INFO L276 IsEmpty]: Start isEmpty. Operand has 429 states, 386 states have (on average 1.645077720207254) internal successors, (635), 391 states have internal predecessors, (635), 31 states have call successors, (31), 9 states have call predecessors, (31), 9 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2022-07-22 20:44:58,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-22 20:44:58,169 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:44:58,170 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:44:58,170 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:44:58,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:44:58,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1865263090, now seen corresponding path program 1 times [2022-07-22 20:44:58,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:44:58,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492861437] [2022-07-22 20:44:58,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:44:58,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:44:58,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:58,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:44:58,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:58,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 20:44:58,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:58,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:44:58,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:44:58,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492861437] [2022-07-22 20:44:58,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492861437] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:44:58,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:44:58,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 20:44:58,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766530435] [2022-07-22 20:44:58,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:44:58,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 20:44:58,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:44:58,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 20:44:58,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 20:44:58,496 INFO L87 Difference]: Start difference. First operand has 429 states, 386 states have (on average 1.645077720207254) internal successors, (635), 391 states have internal predecessors, (635), 31 states have call successors, (31), 9 states have call predecessors, (31), 9 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 20:44:58,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:44:58,792 INFO L93 Difference]: Finished difference Result 904 states and 1464 transitions. [2022-07-22 20:44:58,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 20:44:58,794 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2022-07-22 20:44:58,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:44:58,807 INFO L225 Difference]: With dead ends: 904 [2022-07-22 20:44:58,807 INFO L226 Difference]: Without dead ends: 489 [2022-07-22 20:44:58,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 20:44:58,816 INFO L413 NwaCegarLoop]: 665 mSDtfsCounter, 884 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 20:44:58,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 1061 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 20:44:58,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2022-07-22 20:44:58,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 483. [2022-07-22 20:44:58,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 435 states have (on average 1.5264367816091955) internal successors, (664), 439 states have internal predecessors, (664), 35 states have call successors, (35), 11 states have call predecessors, (35), 11 states have return successors, (39), 33 states have call predecessors, (39), 33 states have call successors, (39) [2022-07-22 20:44:58,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 738 transitions. [2022-07-22 20:44:58,918 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 738 transitions. Word has length 44 [2022-07-22 20:44:58,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:44:58,918 INFO L495 AbstractCegarLoop]: Abstraction has 483 states and 738 transitions. [2022-07-22 20:44:58,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 20:44:58,920 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 738 transitions. [2022-07-22 20:44:58,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-22 20:44:58,927 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:44:58,927 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:44:58,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 20:44:58,928 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:44:58,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:44:58,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1076469852, now seen corresponding path program 1 times [2022-07-22 20:44:58,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:44:58,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832409871] [2022-07-22 20:44:58,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:44:58,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:44:58,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:59,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:44:59,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:59,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 20:44:59,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:59,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:44:59,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:44:59,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832409871] [2022-07-22 20:44:59,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832409871] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:44:59,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:44:59,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 20:44:59,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968387510] [2022-07-22 20:44:59,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:44:59,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 20:44:59,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:44:59,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 20:44:59,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 20:44:59,028 INFO L87 Difference]: Start difference. First operand 483 states and 738 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 20:44:59,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:44:59,436 INFO L93 Difference]: Finished difference Result 731 states and 1078 transitions. [2022-07-22 20:44:59,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 20:44:59,437 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2022-07-22 20:44:59,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:44:59,441 INFO L225 Difference]: With dead ends: 731 [2022-07-22 20:44:59,441 INFO L226 Difference]: Without dead ends: 607 [2022-07-22 20:44:59,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 20:44:59,443 INFO L413 NwaCegarLoop]: 693 mSDtfsCounter, 348 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 1368 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 20:44:59,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 1368 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 20:44:59,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2022-07-22 20:44:59,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 550. [2022-07-22 20:44:59,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 496 states have (on average 1.5080645161290323) internal successors, (748), 500 states have internal predecessors, (748), 38 states have call successors, (38), 14 states have call predecessors, (38), 14 states have return successors, (42), 36 states have call predecessors, (42), 36 states have call successors, (42) [2022-07-22 20:44:59,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 828 transitions. [2022-07-22 20:44:59,489 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 828 transitions. Word has length 45 [2022-07-22 20:44:59,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:44:59,490 INFO L495 AbstractCegarLoop]: Abstraction has 550 states and 828 transitions. [2022-07-22 20:44:59,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 20:44:59,490 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 828 transitions. [2022-07-22 20:44:59,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-22 20:44:59,492 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:44:59,492 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:44:59,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 20:44:59,493 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:44:59,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:44:59,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1934139983, now seen corresponding path program 1 times [2022-07-22 20:44:59,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:44:59,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694176385] [2022-07-22 20:44:59,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:44:59,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:44:59,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:59,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:44:59,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:59,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 20:44:59,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:59,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:44:59,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:44:59,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694176385] [2022-07-22 20:44:59,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694176385] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:44:59,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:44:59,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 20:44:59,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111257622] [2022-07-22 20:44:59,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:44:59,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 20:44:59,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:44:59,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 20:44:59,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 20:44:59,564 INFO L87 Difference]: Start difference. First operand 550 states and 828 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 20:44:59,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:44:59,751 INFO L93 Difference]: Finished difference Result 958 states and 1387 transitions. [2022-07-22 20:44:59,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 20:44:59,752 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2022-07-22 20:44:59,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:44:59,757 INFO L225 Difference]: With dead ends: 958 [2022-07-22 20:44:59,757 INFO L226 Difference]: Without dead ends: 767 [2022-07-22 20:44:59,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 20:44:59,764 INFO L413 NwaCegarLoop]: 668 mSDtfsCounter, 893 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 1062 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 20:44:59,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 1062 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 20:44:59,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2022-07-22 20:44:59,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 715. [2022-07-22 20:44:59,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 642 states have (on average 1.4610591900311527) internal successors, (938), 649 states have internal predecessors, (938), 49 states have call successors, (49), 21 states have call predecessors, (49), 22 states have return successors, (59), 45 states have call predecessors, (59), 47 states have call successors, (59) [2022-07-22 20:44:59,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 1046 transitions. [2022-07-22 20:44:59,803 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 1046 transitions. Word has length 45 [2022-07-22 20:44:59,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:44:59,804 INFO L495 AbstractCegarLoop]: Abstraction has 715 states and 1046 transitions. [2022-07-22 20:44:59,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 20:44:59,804 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 1046 transitions. [2022-07-22 20:44:59,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-22 20:44:59,807 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:44:59,808 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:44:59,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 20:44:59,808 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:44:59,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:44:59,809 INFO L85 PathProgramCache]: Analyzing trace with hash -850776738, now seen corresponding path program 1 times [2022-07-22 20:44:59,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:44:59,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151984899] [2022-07-22 20:44:59,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:44:59,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:44:59,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:59,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:44:59,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:59,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 20:44:59,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:59,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 20:44:59,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:44:59,880 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 20:44:59,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:44:59,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151984899] [2022-07-22 20:44:59,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151984899] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:44:59,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:44:59,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 20:44:59,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97564272] [2022-07-22 20:44:59,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:44:59,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 20:44:59,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:44:59,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 20:44:59,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 20:44:59,883 INFO L87 Difference]: Start difference. First operand 715 states and 1046 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-22 20:45:00,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:45:00,269 INFO L93 Difference]: Finished difference Result 1299 states and 1831 transitions. [2022-07-22 20:45:00,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 20:45:00,269 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 62 [2022-07-22 20:45:00,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:45:00,274 INFO L225 Difference]: With dead ends: 1299 [2022-07-22 20:45:00,274 INFO L226 Difference]: Without dead ends: 943 [2022-07-22 20:45:00,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 20:45:00,276 INFO L413 NwaCegarLoop]: 717 mSDtfsCounter, 332 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 20:45:00,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 1423 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 20:45:00,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2022-07-22 20:45:00,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 905. [2022-07-22 20:45:00,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 905 states, 808 states have (on average 1.4084158415841583) internal successors, (1138), 817 states have internal predecessors, (1138), 63 states have call successors, (63), 29 states have call predecessors, (63), 32 states have return successors, (83), 59 states have call predecessors, (83), 61 states have call successors, (83) [2022-07-22 20:45:00,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1284 transitions. [2022-07-22 20:45:00,312 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1284 transitions. Word has length 62 [2022-07-22 20:45:00,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:45:00,313 INFO L495 AbstractCegarLoop]: Abstraction has 905 states and 1284 transitions. [2022-07-22 20:45:00,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-22 20:45:00,313 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1284 transitions. [2022-07-22 20:45:00,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-22 20:45:00,315 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:45:00,315 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:45:00,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 20:45:00,316 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:45:00,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:45:00,316 INFO L85 PathProgramCache]: Analyzing trace with hash 33645861, now seen corresponding path program 1 times [2022-07-22 20:45:00,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:45:00,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801430775] [2022-07-22 20:45:00,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:45:00,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:45:00,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:00,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:45:00,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:00,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 20:45:00,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:00,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 20:45:00,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:00,360 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-22 20:45:00,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:45:00,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801430775] [2022-07-22 20:45:00,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801430775] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:45:00,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:45:00,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 20:45:00,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007196186] [2022-07-22 20:45:00,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:45:00,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 20:45:00,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:45:00,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 20:45:00,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 20:45:00,362 INFO L87 Difference]: Start difference. First operand 905 states and 1284 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 20:45:00,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:45:00,533 INFO L93 Difference]: Finished difference Result 1558 states and 2137 transitions. [2022-07-22 20:45:00,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 20:45:00,534 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 67 [2022-07-22 20:45:00,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:45:00,539 INFO L225 Difference]: With dead ends: 1558 [2022-07-22 20:45:00,539 INFO L226 Difference]: Without dead ends: 1104 [2022-07-22 20:45:00,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 20:45:00,541 INFO L413 NwaCegarLoop]: 663 mSDtfsCounter, 880 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 1059 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 20:45:00,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [905 Valid, 1059 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 20:45:00,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1104 states. [2022-07-22 20:45:00,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1104 to 1049. [2022-07-22 20:45:00,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1049 states, 936 states have (on average 1.3771367521367521) internal successors, (1289), 947 states have internal predecessors, (1289), 71 states have call successors, (71), 35 states have call predecessors, (71), 40 states have return successors, (97), 67 states have call predecessors, (97), 69 states have call successors, (97) [2022-07-22 20:45:00,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1049 states to 1049 states and 1457 transitions. [2022-07-22 20:45:00,591 INFO L78 Accepts]: Start accepts. Automaton has 1049 states and 1457 transitions. Word has length 67 [2022-07-22 20:45:00,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:45:00,591 INFO L495 AbstractCegarLoop]: Abstraction has 1049 states and 1457 transitions. [2022-07-22 20:45:00,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-22 20:45:00,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1049 states and 1457 transitions. [2022-07-22 20:45:00,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-22 20:45:00,594 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:45:00,594 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:45:00,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 20:45:00,595 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:45:00,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:45:00,595 INFO L85 PathProgramCache]: Analyzing trace with hash -2088486643, now seen corresponding path program 1 times [2022-07-22 20:45:00,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:45:00,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519090862] [2022-07-22 20:45:00,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:45:00,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:45:00,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:00,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:45:00,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:00,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 20:45:00,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:00,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 20:45:00,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:00,711 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 20:45:00,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:45:00,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519090862] [2022-07-22 20:45:00,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519090862] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:45:00,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971852035] [2022-07-22 20:45:00,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:45:00,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:45:00,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:45:00,719 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 20:45:00,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 20:45:00,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:00,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 20:45:00,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:45:00,985 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:45:00,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 20:45:01,040 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-22 20:45:01,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971852035] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 20:45:01,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-22 20:45:01,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 8 [2022-07-22 20:45:01,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315767927] [2022-07-22 20:45:01,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:45:01,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 20:45:01,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:45:01,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 20:45:01,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:45:01,042 INFO L87 Difference]: Start difference. First operand 1049 states and 1457 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-22 20:45:01,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:45:01,285 INFO L93 Difference]: Finished difference Result 1105 states and 1525 transitions. [2022-07-22 20:45:01,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 20:45:01,286 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 68 [2022-07-22 20:45:01,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:45:01,292 INFO L225 Difference]: With dead ends: 1105 [2022-07-22 20:45:01,292 INFO L226 Difference]: Without dead ends: 1102 [2022-07-22 20:45:01,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-22 20:45:01,294 INFO L413 NwaCegarLoop]: 672 mSDtfsCounter, 1181 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1181 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 20:45:01,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1181 Valid, 739 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 20:45:01,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2022-07-22 20:45:01,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 1048. [2022-07-22 20:45:01,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1048 states, 936 states have (on average 1.375) internal successors, (1287), 946 states have internal predecessors, (1287), 70 states have call successors, (70), 35 states have call predecessors, (70), 40 states have return successors, (97), 67 states have call predecessors, (97), 69 states have call successors, (97) [2022-07-22 20:45:01,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1454 transitions. [2022-07-22 20:45:01,361 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 1454 transitions. Word has length 68 [2022-07-22 20:45:01,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:45:01,362 INFO L495 AbstractCegarLoop]: Abstraction has 1048 states and 1454 transitions. [2022-07-22 20:45:01,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-22 20:45:01,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 1454 transitions. [2022-07-22 20:45:01,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-22 20:45:01,364 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:45:01,364 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:45:01,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 20:45:01,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-07-22 20:45:01,587 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:45:01,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:45:01,588 INFO L85 PathProgramCache]: Analyzing trace with hash -319896280, now seen corresponding path program 1 times [2022-07-22 20:45:01,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:45:01,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902544548] [2022-07-22 20:45:01,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:45:01,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:45:01,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:01,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:45:01,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:01,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 20:45:01,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:01,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 20:45:01,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:01,691 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 20:45:01,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:45:01,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902544548] [2022-07-22 20:45:01,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902544548] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:45:01,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704198484] [2022-07-22 20:45:01,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:45:01,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:45:01,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:45:01,696 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 20:45:01,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 20:45:01,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:01,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-22 20:45:01,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:45:02,100 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:45:02,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 20:45:02,177 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-22 20:45:02,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704198484] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 20:45:02,177 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 20:45:02,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 11 [2022-07-22 20:45:02,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12931631] [2022-07-22 20:45:02,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 20:45:02,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 20:45:02,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:45:02,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 20:45:02,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:45:02,181 INFO L87 Difference]: Start difference. First operand 1048 states and 1454 transitions. Second operand has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2022-07-22 20:45:03,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:45:03,734 INFO L93 Difference]: Finished difference Result 2748 states and 3674 transitions. [2022-07-22 20:45:03,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-07-22 20:45:03,735 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 69 [2022-07-22 20:45:03,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:45:03,744 INFO L225 Difference]: With dead ends: 2748 [2022-07-22 20:45:03,744 INFO L226 Difference]: Without dead ends: 2204 [2022-07-22 20:45:03,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=324, Invalid=1482, Unknown=0, NotChecked=0, Total=1806 [2022-07-22 20:45:03,747 INFO L413 NwaCegarLoop]: 777 mSDtfsCounter, 1237 mSDsluCounter, 3242 mSDsCounter, 0 mSdLazyCounter, 2192 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1269 SdHoareTripleChecker+Valid, 4019 SdHoareTripleChecker+Invalid, 2239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:45:03,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1269 Valid, 4019 Invalid, 2239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 2192 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 20:45:03,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2204 states. [2022-07-22 20:45:03,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2204 to 1437. [2022-07-22 20:45:03,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1437 states, 1286 states have (on average 1.3382581648522551) internal successors, (1721), 1304 states have internal predecessors, (1721), 90 states have call successors, (90), 49 states have call predecessors, (90), 59 states have return successors, (131), 84 states have call predecessors, (131), 89 states have call successors, (131) [2022-07-22 20:45:03,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 1942 transitions. [2022-07-22 20:45:03,819 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 1942 transitions. Word has length 69 [2022-07-22 20:45:03,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:45:03,820 INFO L495 AbstractCegarLoop]: Abstraction has 1437 states and 1942 transitions. [2022-07-22 20:45:03,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2022-07-22 20:45:03,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 1942 transitions. [2022-07-22 20:45:03,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-22 20:45:03,823 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:45:03,823 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:45:03,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 20:45:04,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-07-22 20:45:04,047 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:45:04,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:45:04,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1470276952, now seen corresponding path program 1 times [2022-07-22 20:45:04,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:45:04,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049923707] [2022-07-22 20:45:04,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:45:04,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:45:04,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:04,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:45:04,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:04,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 20:45:04,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:04,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 20:45:04,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:04,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 20:45:04,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:04,124 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-22 20:45:04,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:45:04,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049923707] [2022-07-22 20:45:04,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049923707] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:45:04,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487575242] [2022-07-22 20:45:04,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:45:04,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:45:04,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:45:04,127 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 20:45:04,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 20:45:04,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:04,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 20:45:04,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:45:04,270 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-22 20:45:04,270 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 20:45:04,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487575242] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:45:04,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 20:45:04,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-22 20:45:04,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64730663] [2022-07-22 20:45:04,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:45:04,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:45:04,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:45:04,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:45:04,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:45:04,272 INFO L87 Difference]: Start difference. First operand 1437 states and 1942 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-22 20:45:04,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:45:04,352 INFO L93 Difference]: Finished difference Result 2160 states and 2880 transitions. [2022-07-22 20:45:04,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 20:45:04,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 88 [2022-07-22 20:45:04,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:45:04,359 INFO L225 Difference]: With dead ends: 2160 [2022-07-22 20:45:04,359 INFO L226 Difference]: Without dead ends: 1315 [2022-07-22 20:45:04,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:45:04,365 INFO L413 NwaCegarLoop]: 678 mSDtfsCounter, 607 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 607 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:45:04,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [607 Valid, 753 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:45:04,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2022-07-22 20:45:04,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 1300. [2022-07-22 20:45:04,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1300 states, 1165 states have (on average 1.3416309012875536) internal successors, (1563), 1182 states have internal predecessors, (1563), 82 states have call successors, (82), 43 states have call predecessors, (82), 51 states have return successors, (117), 75 states have call predecessors, (117), 81 states have call successors, (117) [2022-07-22 20:45:04,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1300 states to 1300 states and 1762 transitions. [2022-07-22 20:45:04,422 INFO L78 Accepts]: Start accepts. Automaton has 1300 states and 1762 transitions. Word has length 88 [2022-07-22 20:45:04,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:45:04,423 INFO L495 AbstractCegarLoop]: Abstraction has 1300 states and 1762 transitions. [2022-07-22 20:45:04,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-22 20:45:04,423 INFO L276 IsEmpty]: Start isEmpty. Operand 1300 states and 1762 transitions. [2022-07-22 20:45:04,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-22 20:45:04,431 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:45:04,431 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:45:04,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 20:45:04,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:45:04,647 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:45:04,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:45:04,648 INFO L85 PathProgramCache]: Analyzing trace with hash 852635580, now seen corresponding path program 1 times [2022-07-22 20:45:04,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:45:04,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438357082] [2022-07-22 20:45:04,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:45:04,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:45:04,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:04,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:45:04,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:04,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 20:45:04,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:04,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 20:45:04,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:04,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 20:45:04,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:04,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 20:45:04,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:04,725 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-22 20:45:04,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:45:04,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438357082] [2022-07-22 20:45:04,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438357082] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:45:04,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492477658] [2022-07-22 20:45:04,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:45:04,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:45:04,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:45:04,728 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 20:45:04,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 20:45:04,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:04,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 20:45:04,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:45:04,879 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 20:45:04,880 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 20:45:04,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492477658] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:45:04,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 20:45:04,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-22 20:45:04,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796984594] [2022-07-22 20:45:04,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:45:04,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:45:04,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:45:04,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:45:04,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:45:04,882 INFO L87 Difference]: Start difference. First operand 1300 states and 1762 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-22 20:45:04,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:45:04,930 INFO L93 Difference]: Finished difference Result 1679 states and 2230 transitions. [2022-07-22 20:45:04,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 20:45:04,930 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 103 [2022-07-22 20:45:04,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:45:04,932 INFO L225 Difference]: With dead ends: 1679 [2022-07-22 20:45:04,932 INFO L226 Difference]: Without dead ends: 353 [2022-07-22 20:45:04,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:45:04,937 INFO L413 NwaCegarLoop]: 692 mSDtfsCounter, 62 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 1314 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:45:04,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 1314 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:45:04,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2022-07-22 20:45:04,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 353. [2022-07-22 20:45:04,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 321 states have (on average 1.573208722741433) internal successors, (505), 322 states have internal predecessors, (505), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-07-22 20:45:04,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 555 transitions. [2022-07-22 20:45:04,969 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 555 transitions. Word has length 103 [2022-07-22 20:45:04,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:45:04,969 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 555 transitions. [2022-07-22 20:45:04,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-22 20:45:04,970 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 555 transitions. [2022-07-22 20:45:04,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-22 20:45:04,971 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:45:04,971 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:45:04,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 20:45:05,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:45:05,188 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:45:05,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:45:05,188 INFO L85 PathProgramCache]: Analyzing trace with hash -971993518, now seen corresponding path program 1 times [2022-07-22 20:45:05,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:45:05,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71118940] [2022-07-22 20:45:05,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:45:05,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:45:05,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:05,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:45:05,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:05,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:45:05,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:05,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 20:45:05,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:05,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 20:45:05,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:05,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 20:45:05,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:05,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:45:05,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:45:05,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71118940] [2022-07-22 20:45:05,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71118940] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:45:05,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:45:05,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 20:45:05,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145532700] [2022-07-22 20:45:05,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:45:05,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 20:45:05,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:45:05,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 20:45:05,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 20:45:05,306 INFO L87 Difference]: Start difference. First operand 353 states and 555 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:45:06,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:45:06,426 INFO L93 Difference]: Finished difference Result 827 states and 1321 transitions. [2022-07-22 20:45:06,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 20:45:06,426 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-07-22 20:45:06,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:45:06,429 INFO L225 Difference]: With dead ends: 827 [2022-07-22 20:45:06,429 INFO L226 Difference]: Without dead ends: 484 [2022-07-22 20:45:06,431 INFO L412 NwaCegarLoop]: 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 [2022-07-22 20:45:06,431 INFO L413 NwaCegarLoop]: 611 mSDtfsCounter, 952 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 977 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 20:45:06,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [975 Valid, 977 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 20:45:06,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2022-07-22 20:45:06,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 353. [2022-07-22 20:45:06,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 321 states have (on average 1.5700934579439252) internal successors, (504), 322 states have internal predecessors, (504), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-07-22 20:45:06,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 554 transitions. [2022-07-22 20:45:06,451 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 554 transitions. Word has length 167 [2022-07-22 20:45:06,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:45:06,452 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 554 transitions. [2022-07-22 20:45:06,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:45:06,452 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 554 transitions. [2022-07-22 20:45:06,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-22 20:45:06,454 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:45:06,454 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:45:06,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 20:45:06,454 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:45:06,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:45:06,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1952948332, now seen corresponding path program 1 times [2022-07-22 20:45:06,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:45:06,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072767940] [2022-07-22 20:45:06,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:45:06,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:45:06,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:06,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:45:06,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:06,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:45:06,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:06,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 20:45:06,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:06,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 20:45:06,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:06,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 20:45:06,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:06,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:45:06,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:45:06,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072767940] [2022-07-22 20:45:06,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072767940] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:45:06,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:45:06,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 20:45:06,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470832065] [2022-07-22 20:45:06,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:45:06,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 20:45:06,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:45:06,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 20:45:06,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 20:45:06,565 INFO L87 Difference]: Start difference. First operand 353 states and 554 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:45:07,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:45:07,771 INFO L93 Difference]: Finished difference Result 819 states and 1304 transitions. [2022-07-22 20:45:07,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 20:45:07,772 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-07-22 20:45:07,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:45:07,775 INFO L225 Difference]: With dead ends: 819 [2022-07-22 20:45:07,775 INFO L226 Difference]: Without dead ends: 484 [2022-07-22 20:45:07,776 INFO L412 NwaCegarLoop]: 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 [2022-07-22 20:45:07,776 INFO L413 NwaCegarLoop]: 610 mSDtfsCounter, 943 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 966 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:45:07,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [966 Valid, 975 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 669 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 20:45:07,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2022-07-22 20:45:07,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 353. [2022-07-22 20:45:07,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 321 states have (on average 1.5669781931464175) internal successors, (503), 322 states have internal predecessors, (503), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-07-22 20:45:07,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 553 transitions. [2022-07-22 20:45:07,803 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 553 transitions. Word has length 167 [2022-07-22 20:45:07,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:45:07,804 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 553 transitions. [2022-07-22 20:45:07,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:45:07,805 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 553 transitions. [2022-07-22 20:45:07,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-22 20:45:07,807 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:45:07,807 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:45:07,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 20:45:07,807 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:45:07,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:45:07,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1688300842, now seen corresponding path program 1 times [2022-07-22 20:45:07,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:45:07,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160110506] [2022-07-22 20:45:07,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:45:07,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:45:07,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:07,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:45:07,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:07,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:45:07,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:07,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 20:45:07,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:07,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 20:45:07,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:07,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 20:45:07,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:07,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:45:07,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:45:07,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160110506] [2022-07-22 20:45:07,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160110506] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:45:07,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:45:07,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 20:45:07,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106552886] [2022-07-22 20:45:07,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:45:07,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 20:45:07,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:45:07,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 20:45:07,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 20:45:07,946 INFO L87 Difference]: Start difference. First operand 353 states and 553 transitions. Second operand has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:45:10,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:45:10,464 INFO L93 Difference]: Finished difference Result 1297 states and 2080 transitions. [2022-07-22 20:45:10,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 20:45:10,464 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-07-22 20:45:10,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:45:10,469 INFO L225 Difference]: With dead ends: 1297 [2022-07-22 20:45:10,469 INFO L226 Difference]: Without dead ends: 964 [2022-07-22 20:45:10,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:45:10,471 INFO L413 NwaCegarLoop]: 658 mSDtfsCounter, 1437 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 1868 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1455 SdHoareTripleChecker+Valid, 1540 SdHoareTripleChecker+Invalid, 1980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-22 20:45:10,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1455 Valid, 1540 Invalid, 1980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1868 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-22 20:45:10,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2022-07-22 20:45:10,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 703. [2022-07-22 20:45:10,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 644 states have (on average 1.5807453416149069) internal successors, (1018), 646 states have internal predecessors, (1018), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (48), 45 states have call predecessors, (48), 45 states have call successors, (48) [2022-07-22 20:45:10,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 1111 transitions. [2022-07-22 20:45:10,518 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 1111 transitions. Word has length 167 [2022-07-22 20:45:10,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:45:10,519 INFO L495 AbstractCegarLoop]: Abstraction has 703 states and 1111 transitions. [2022-07-22 20:45:10,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:45:10,519 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 1111 transitions. [2022-07-22 20:45:10,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-22 20:45:10,520 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:45:10,521 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:45:10,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 20:45:10,521 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:45:10,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:45:10,522 INFO L85 PathProgramCache]: Analyzing trace with hash -688714662, now seen corresponding path program 1 times [2022-07-22 20:45:10,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:45:10,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144062079] [2022-07-22 20:45:10,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:45:10,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:45:10,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:10,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:45:10,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:10,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:45:10,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:10,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 20:45:10,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:10,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 20:45:10,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:10,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 20:45:10,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:10,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:45:10,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:45:10,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144062079] [2022-07-22 20:45:10,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144062079] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:45:10,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:45:10,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:45:10,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387541067] [2022-07-22 20:45:10,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:45:10,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:45:10,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:45:10,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:45:10,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:45:10,692 INFO L87 Difference]: Start difference. First operand 703 states and 1111 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:45:13,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:45:13,804 INFO L93 Difference]: Finished difference Result 2145 states and 3445 transitions. [2022-07-22 20:45:13,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:45:13,806 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-07-22 20:45:13,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:45:13,812 INFO L225 Difference]: With dead ends: 2145 [2022-07-22 20:45:13,813 INFO L226 Difference]: Without dead ends: 1462 [2022-07-22 20:45:13,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 20:45:13,816 INFO L413 NwaCegarLoop]: 935 mSDtfsCounter, 1467 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 2899 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 2680 SdHoareTripleChecker+Invalid, 2977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-22 20:45:13,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1485 Valid, 2680 Invalid, 2977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2899 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-22 20:45:13,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2022-07-22 20:45:13,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 1028. [2022-07-22 20:45:13,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 942 states have (on average 1.5743099787685775) internal successors, (1483), 945 states have internal predecessors, (1483), 65 states have call successors, (65), 18 states have call predecessors, (65), 20 states have return successors, (70), 66 states have call predecessors, (70), 65 states have call successors, (70) [2022-07-22 20:45:13,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1618 transitions. [2022-07-22 20:45:13,892 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1618 transitions. Word has length 167 [2022-07-22 20:45:13,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:45:13,893 INFO L495 AbstractCegarLoop]: Abstraction has 1028 states and 1618 transitions. [2022-07-22 20:45:13,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:45:13,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1618 transitions. [2022-07-22 20:45:13,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-22 20:45:13,895 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:45:13,895 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:45:13,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 20:45:13,895 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:45:13,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:45:13,896 INFO L85 PathProgramCache]: Analyzing trace with hash -350427112, now seen corresponding path program 1 times [2022-07-22 20:45:13,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:45:13,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215339840] [2022-07-22 20:45:13,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:45:13,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:45:13,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:13,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:45:13,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:13,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:45:13,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:14,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 20:45:14,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:14,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 20:45:14,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:14,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 20:45:14,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:14,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:45:14,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:45:14,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215339840] [2022-07-22 20:45:14,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215339840] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:45:14,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:45:14,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:45:14,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961133202] [2022-07-22 20:45:14,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:45:14,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:45:14,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:45:14,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:45:14,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:45:14,044 INFO L87 Difference]: Start difference. First operand 1028 states and 1618 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:45:15,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:45:15,622 INFO L93 Difference]: Finished difference Result 2486 states and 3990 transitions. [2022-07-22 20:45:15,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:45:15,622 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-07-22 20:45:15,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:45:15,628 INFO L225 Difference]: With dead ends: 2486 [2022-07-22 20:45:15,628 INFO L226 Difference]: Without dead ends: 1478 [2022-07-22 20:45:15,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:45:15,631 INFO L413 NwaCegarLoop]: 554 mSDtfsCounter, 1118 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 1307 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1137 SdHoareTripleChecker+Valid, 1422 SdHoareTripleChecker+Invalid, 1391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 20:45:15,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1137 Valid, 1422 Invalid, 1391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1307 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 20:45:15,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1478 states. [2022-07-22 20:45:15,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1478 to 1028. [2022-07-22 20:45:15,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 942 states have (on average 1.5711252653927814) internal successors, (1480), 945 states have internal predecessors, (1480), 65 states have call successors, (65), 18 states have call predecessors, (65), 20 states have return successors, (70), 66 states have call predecessors, (70), 65 states have call successors, (70) [2022-07-22 20:45:15,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1615 transitions. [2022-07-22 20:45:15,711 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1615 transitions. Word has length 167 [2022-07-22 20:45:15,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:45:15,711 INFO L495 AbstractCegarLoop]: Abstraction has 1028 states and 1615 transitions. [2022-07-22 20:45:15,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:45:15,712 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1615 transitions. [2022-07-22 20:45:15,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-22 20:45:15,713 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:45:15,714 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:45:15,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 20:45:15,714 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:45:15,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:45:15,715 INFO L85 PathProgramCache]: Analyzing trace with hash -890856618, now seen corresponding path program 1 times [2022-07-22 20:45:15,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:45:15,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821932578] [2022-07-22 20:45:15,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:45:15,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:45:15,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:15,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:45:15,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:15,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:45:15,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:15,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 20:45:15,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:15,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 20:45:15,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:15,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 20:45:15,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:15,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:45:15,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:45:15,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821932578] [2022-07-22 20:45:15,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821932578] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:45:15,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:45:15,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:45:15,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500891758] [2022-07-22 20:45:15,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:45:15,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:45:15,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:45:15,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:45:15,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:45:15,857 INFO L87 Difference]: Start difference. First operand 1028 states and 1615 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:45:17,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:45:17,267 INFO L93 Difference]: Finished difference Result 2482 states and 3973 transitions. [2022-07-22 20:45:17,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:45:17,268 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-07-22 20:45:17,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:45:17,273 INFO L225 Difference]: With dead ends: 2482 [2022-07-22 20:45:17,273 INFO L226 Difference]: Without dead ends: 1474 [2022-07-22 20:45:17,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:45:17,277 INFO L413 NwaCegarLoop]: 592 mSDtfsCounter, 1188 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1207 SdHoareTripleChecker+Valid, 1279 SdHoareTripleChecker+Invalid, 1331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 20:45:17,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1207 Valid, 1279 Invalid, 1331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 20:45:17,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2022-07-22 20:45:17,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1028. [2022-07-22 20:45:17,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 942 states have (on average 1.5679405520169851) internal successors, (1477), 945 states have internal predecessors, (1477), 65 states have call successors, (65), 18 states have call predecessors, (65), 20 states have return successors, (70), 66 states have call predecessors, (70), 65 states have call successors, (70) [2022-07-22 20:45:17,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1612 transitions. [2022-07-22 20:45:17,360 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1612 transitions. Word has length 167 [2022-07-22 20:45:17,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:45:17,360 INFO L495 AbstractCegarLoop]: Abstraction has 1028 states and 1612 transitions. [2022-07-22 20:45:17,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:45:17,361 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1612 transitions. [2022-07-22 20:45:17,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-22 20:45:17,362 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:45:17,362 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:45:17,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 20:45:17,363 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:45:17,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:45:17,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1046837160, now seen corresponding path program 1 times [2022-07-22 20:45:17,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:45:17,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704060330] [2022-07-22 20:45:17,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:45:17,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:45:17,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:17,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:45:17,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:17,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:45:17,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:17,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 20:45:17,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:17,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 20:45:17,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:17,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 20:45:17,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:17,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:45:17,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:45:17,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704060330] [2022-07-22 20:45:17,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704060330] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:45:17,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:45:17,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:45:17,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440633195] [2022-07-22 20:45:17,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:45:17,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:45:17,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:45:17,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:45:17,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:45:17,518 INFO L87 Difference]: Start difference. First operand 1028 states and 1612 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:45:20,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:45:20,552 INFO L93 Difference]: Finished difference Result 3386 states and 5396 transitions. [2022-07-22 20:45:20,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:45:20,553 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-07-22 20:45:20,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:45:20,561 INFO L225 Difference]: With dead ends: 3386 [2022-07-22 20:45:20,561 INFO L226 Difference]: Without dead ends: 2378 [2022-07-22 20:45:20,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 20:45:20,565 INFO L413 NwaCegarLoop]: 911 mSDtfsCounter, 1447 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 2850 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1465 SdHoareTripleChecker+Valid, 2656 SdHoareTripleChecker+Invalid, 2930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-22 20:45:20,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1465 Valid, 2656 Invalid, 2930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2850 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-22 20:45:20,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2378 states. [2022-07-22 20:45:20,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2378 to 1688. [2022-07-22 20:45:20,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1688 states, 1548 states have (on average 1.562015503875969) internal successors, (2418), 1553 states have internal predecessors, (2418), 105 states have call successors, (105), 30 states have call predecessors, (105), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2022-07-22 20:45:20,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1688 states to 1688 states and 2641 transitions. [2022-07-22 20:45:20,712 INFO L78 Accepts]: Start accepts. Automaton has 1688 states and 2641 transitions. Word has length 167 [2022-07-22 20:45:20,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:45:20,712 INFO L495 AbstractCegarLoop]: Abstraction has 1688 states and 2641 transitions. [2022-07-22 20:45:20,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:45:20,712 INFO L276 IsEmpty]: Start isEmpty. Operand 1688 states and 2641 transitions. [2022-07-22 20:45:20,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-22 20:45:20,714 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:45:20,715 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:45:20,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 20:45:20,715 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:45:20,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:45:20,715 INFO L85 PathProgramCache]: Analyzing trace with hash -636226794, now seen corresponding path program 1 times [2022-07-22 20:45:20,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:45:20,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020713329] [2022-07-22 20:45:20,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:45:20,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:45:20,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:20,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:45:20,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:20,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:45:20,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:20,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 20:45:20,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:20,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 20:45:20,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:20,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 20:45:20,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:20,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:45:20,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:45:20,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020713329] [2022-07-22 20:45:20,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020713329] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:45:20,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:45:20,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:45:20,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570768737] [2022-07-22 20:45:20,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:45:20,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:45:20,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:45:20,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:45:20,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:45:20,849 INFO L87 Difference]: Start difference. First operand 1688 states and 2641 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:45:22,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:45:22,392 INFO L93 Difference]: Finished difference Result 4034 states and 6414 transitions. [2022-07-22 20:45:22,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:45:22,393 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-07-22 20:45:22,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:45:22,402 INFO L225 Difference]: With dead ends: 4034 [2022-07-22 20:45:22,402 INFO L226 Difference]: Without dead ends: 2366 [2022-07-22 20:45:22,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:45:22,407 INFO L413 NwaCegarLoop]: 585 mSDtfsCounter, 1033 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 1362 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1052 SdHoareTripleChecker+Valid, 1453 SdHoareTripleChecker+Invalid, 1445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-22 20:45:22,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1052 Valid, 1453 Invalid, 1445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1362 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-22 20:45:22,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2366 states. [2022-07-22 20:45:22,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2366 to 1688. [2022-07-22 20:45:22,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1688 states, 1548 states have (on average 1.5587855297157622) internal successors, (2413), 1553 states have internal predecessors, (2413), 105 states have call successors, (105), 30 states have call predecessors, (105), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2022-07-22 20:45:22,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1688 states to 1688 states and 2636 transitions. [2022-07-22 20:45:22,561 INFO L78 Accepts]: Start accepts. Automaton has 1688 states and 2636 transitions. Word has length 167 [2022-07-22 20:45:22,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:45:22,561 INFO L495 AbstractCegarLoop]: Abstraction has 1688 states and 2636 transitions. [2022-07-22 20:45:22,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:45:22,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1688 states and 2636 transitions. [2022-07-22 20:45:22,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-22 20:45:22,563 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:45:22,564 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:45:22,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 20:45:22,564 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:45:22,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:45:22,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1870870680, now seen corresponding path program 1 times [2022-07-22 20:45:22,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:45:22,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519204794] [2022-07-22 20:45:22,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:45:22,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:45:22,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:22,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:45:22,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:22,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:45:22,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:22,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 20:45:22,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:22,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 20:45:22,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:22,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 20:45:22,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:22,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:45:22,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:45:22,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519204794] [2022-07-22 20:45:22,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519204794] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:45:22,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:45:22,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:45:22,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402848173] [2022-07-22 20:45:22,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:45:22,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:45:22,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:45:22,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:45:22,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:45:22,733 INFO L87 Difference]: Start difference. First operand 1688 states and 2636 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:45:25,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:45:25,628 INFO L93 Difference]: Finished difference Result 5790 states and 9161 transitions. [2022-07-22 20:45:25,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:45:25,631 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-07-22 20:45:25,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:45:25,647 INFO L225 Difference]: With dead ends: 5790 [2022-07-22 20:45:25,647 INFO L226 Difference]: Without dead ends: 4122 [2022-07-22 20:45:25,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 20:45:25,652 INFO L413 NwaCegarLoop]: 900 mSDtfsCounter, 1439 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 2823 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1457 SdHoareTripleChecker+Valid, 2645 SdHoareTripleChecker+Invalid, 2903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-22 20:45:25,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1457 Valid, 2645 Invalid, 2903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2823 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-22 20:45:25,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4122 states. [2022-07-22 20:45:25,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4122 to 3010. [2022-07-22 20:45:25,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3010 states, 2762 states have (on average 1.552860246198407) internal successors, (4289), 2771 states have internal predecessors, (4289), 185 states have call successors, (185), 54 states have call predecessors, (185), 62 states have return successors, (220), 192 states have call predecessors, (220), 185 states have call successors, (220) [2022-07-22 20:45:25,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3010 states to 3010 states and 4694 transitions. [2022-07-22 20:45:25,961 INFO L78 Accepts]: Start accepts. Automaton has 3010 states and 4694 transitions. Word has length 167 [2022-07-22 20:45:25,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:45:25,962 INFO L495 AbstractCegarLoop]: Abstraction has 3010 states and 4694 transitions. [2022-07-22 20:45:25,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:45:25,962 INFO L276 IsEmpty]: Start isEmpty. Operand 3010 states and 4694 transitions. [2022-07-22 20:45:25,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-22 20:45:25,965 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:45:25,965 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:45:25,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 20:45:25,965 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:45:25,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:45:25,965 INFO L85 PathProgramCache]: Analyzing trace with hash -265012522, now seen corresponding path program 1 times [2022-07-22 20:45:25,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:45:25,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953450108] [2022-07-22 20:45:25,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:45:25,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:45:25,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:25,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:45:25,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:26,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:45:26,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:26,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 20:45:26,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:26,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 20:45:26,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:26,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 20:45:26,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:26,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:45:26,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:45:26,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953450108] [2022-07-22 20:45:26,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953450108] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:45:26,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:45:26,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:45:26,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060922553] [2022-07-22 20:45:26,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:45:26,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:45:26,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:45:26,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:45:26,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:45:26,092 INFO L87 Difference]: Start difference. First operand 3010 states and 4694 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:45:27,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:45:27,454 INFO L93 Difference]: Finished difference Result 7130 states and 11281 transitions. [2022-07-22 20:45:27,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:45:27,455 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-07-22 20:45:27,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:45:27,468 INFO L225 Difference]: With dead ends: 7130 [2022-07-22 20:45:27,469 INFO L226 Difference]: Without dead ends: 4140 [2022-07-22 20:45:27,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:45:27,475 INFO L413 NwaCegarLoop]: 578 mSDtfsCounter, 1186 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 1193 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1205 SdHoareTripleChecker+Valid, 1265 SdHoareTripleChecker+Invalid, 1301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 20:45:27,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1205 Valid, 1265 Invalid, 1301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1193 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 20:45:27,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4140 states. [2022-07-22 20:45:27,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4140 to 3010. [2022-07-22 20:45:27,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3010 states, 2762 states have (on average 1.549601737871108) internal successors, (4280), 2771 states have internal predecessors, (4280), 185 states have call successors, (185), 54 states have call predecessors, (185), 62 states have return successors, (220), 192 states have call predecessors, (220), 185 states have call successors, (220) [2022-07-22 20:45:27,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3010 states to 3010 states and 4685 transitions. [2022-07-22 20:45:27,779 INFO L78 Accepts]: Start accepts. Automaton has 3010 states and 4685 transitions. Word has length 167 [2022-07-22 20:45:27,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:45:27,779 INFO L495 AbstractCegarLoop]: Abstraction has 3010 states and 4685 transitions. [2022-07-22 20:45:27,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:45:27,780 INFO L276 IsEmpty]: Start isEmpty. Operand 3010 states and 4685 transitions. [2022-07-22 20:45:27,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-22 20:45:27,783 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:45:27,783 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:45:27,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 20:45:27,783 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:45:27,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:45:27,784 INFO L85 PathProgramCache]: Analyzing trace with hash -195364648, now seen corresponding path program 1 times [2022-07-22 20:45:27,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:45:27,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67385811] [2022-07-22 20:45:27,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:45:27,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:45:27,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:27,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:45:27,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:27,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:45:27,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:27,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 20:45:27,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:27,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 20:45:27,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:27,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 20:45:27,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:27,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:45:27,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:45:27,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67385811] [2022-07-22 20:45:27,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67385811] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:45:27,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:45:27,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:45:27,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127610821] [2022-07-22 20:45:27,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:45:27,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:45:27,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:45:27,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:45:27,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:45:27,919 INFO L87 Difference]: Start difference. First operand 3010 states and 4685 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:45:30,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:45:30,934 INFO L93 Difference]: Finished difference Result 10596 states and 16685 transitions. [2022-07-22 20:45:30,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:45:30,935 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-07-22 20:45:30,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:45:30,958 INFO L225 Difference]: With dead ends: 10596 [2022-07-22 20:45:30,959 INFO L226 Difference]: Without dead ends: 7606 [2022-07-22 20:45:30,967 INFO L412 NwaCegarLoop]: 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 [2022-07-22 20:45:30,968 INFO L413 NwaCegarLoop]: 887 mSDtfsCounter, 1434 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 2793 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1452 SdHoareTripleChecker+Valid, 2632 SdHoareTripleChecker+Invalid, 2876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:45:30,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1452 Valid, 2632 Invalid, 2876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 2793 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-22 20:45:30,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7606 states. [2022-07-22 20:45:31,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7606 to 5668. [2022-07-22 20:45:31,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5668 states, 5204 states have (on average 1.5449654112221367) internal successors, (8040), 5221 states have internal predecessors, (8040), 345 states have call successors, (345), 102 states have call predecessors, (345), 118 states have return successors, (442), 360 states have call predecessors, (442), 345 states have call successors, (442) [2022-07-22 20:45:31,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5668 states to 5668 states and 8827 transitions. [2022-07-22 20:45:31,449 INFO L78 Accepts]: Start accepts. Automaton has 5668 states and 8827 transitions. Word has length 167 [2022-07-22 20:45:31,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:45:31,449 INFO L495 AbstractCegarLoop]: Abstraction has 5668 states and 8827 transitions. [2022-07-22 20:45:31,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:45:31,450 INFO L276 IsEmpty]: Start isEmpty. Operand 5668 states and 8827 transitions. [2022-07-22 20:45:31,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-22 20:45:31,454 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:45:31,454 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:45:31,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-22 20:45:31,454 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:45:31,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:45:31,455 INFO L85 PathProgramCache]: Analyzing trace with hash 222524054, now seen corresponding path program 1 times [2022-07-22 20:45:31,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:45:31,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455902497] [2022-07-22 20:45:31,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:45:31,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:45:31,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:31,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:45:31,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:31,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:45:31,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:31,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 20:45:31,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:31,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 20:45:31,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:31,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 20:45:31,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:31,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:45:31,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:45:31,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455902497] [2022-07-22 20:45:31,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455902497] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:45:31,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:45:31,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:45:31,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873968487] [2022-07-22 20:45:31,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:45:31,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:45:31,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:45:31,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:45:31,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:45:31,580 INFO L87 Difference]: Start difference. First operand 5668 states and 8827 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:45:33,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:45:33,266 INFO L93 Difference]: Finished difference Result 13304 states and 20996 transitions. [2022-07-22 20:45:33,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:45:33,267 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-07-22 20:45:33,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:45:33,291 INFO L225 Difference]: With dead ends: 13304 [2022-07-22 20:45:33,291 INFO L226 Difference]: Without dead ends: 7656 [2022-07-22 20:45:33,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:45:33,307 INFO L413 NwaCegarLoop]: 541 mSDtfsCounter, 1236 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 1143 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1255 SdHoareTripleChecker+Valid, 1228 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 20:45:33,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1255 Valid, 1228 Invalid, 1255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1143 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 20:45:33,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7656 states. [2022-07-22 20:45:33,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7656 to 5668. [2022-07-22 20:45:33,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5668 states, 5204 states have (on average 1.5416986933128363) internal successors, (8023), 5221 states have internal predecessors, (8023), 345 states have call successors, (345), 102 states have call predecessors, (345), 118 states have return successors, (442), 360 states have call predecessors, (442), 345 states have call successors, (442) [2022-07-22 20:45:33,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5668 states to 5668 states and 8810 transitions. [2022-07-22 20:45:33,931 INFO L78 Accepts]: Start accepts. Automaton has 5668 states and 8810 transitions. Word has length 167 [2022-07-22 20:45:33,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:45:33,932 INFO L495 AbstractCegarLoop]: Abstraction has 5668 states and 8810 transitions. [2022-07-22 20:45:33,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:45:33,932 INFO L276 IsEmpty]: Start isEmpty. Operand 5668 states and 8810 transitions. [2022-07-22 20:45:33,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-22 20:45:33,936 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:45:33,937 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:45:33,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-22 20:45:33,937 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:45:33,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:45:33,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1394916396, now seen corresponding path program 1 times [2022-07-22 20:45:33,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:45:33,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857740377] [2022-07-22 20:45:33,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:45:33,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:45:33,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:33,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:45:33,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:34,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:45:34,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:34,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 20:45:34,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:34,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 20:45:34,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:34,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 20:45:34,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:34,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:45:34,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:45:34,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857740377] [2022-07-22 20:45:34,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857740377] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:45:34,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:45:34,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:45:34,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868344360] [2022-07-22 20:45:34,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:45:34,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:45:34,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:45:34,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:45:34,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:45:34,091 INFO L87 Difference]: Start difference. First operand 5668 states and 8810 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:45:36,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:45:36,066 INFO L93 Difference]: Finished difference Result 13286 states and 20909 transitions. [2022-07-22 20:45:36,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:45:36,067 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-07-22 20:45:36,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:45:36,086 INFO L225 Difference]: With dead ends: 13286 [2022-07-22 20:45:36,087 INFO L226 Difference]: Without dead ends: 7638 [2022-07-22 20:45:36,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:45:36,099 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 1028 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 1305 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1047 SdHoareTripleChecker+Valid, 1429 SdHoareTripleChecker+Invalid, 1393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 20:45:36,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1047 Valid, 1429 Invalid, 1393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1305 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 20:45:36,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7638 states. [2022-07-22 20:45:36,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7638 to 5668. [2022-07-22 20:45:36,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5668 states, 5204 states have (on average 1.5384319754035358) internal successors, (8006), 5221 states have internal predecessors, (8006), 345 states have call successors, (345), 102 states have call predecessors, (345), 118 states have return successors, (442), 360 states have call predecessors, (442), 345 states have call successors, (442) [2022-07-22 20:45:36,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5668 states to 5668 states and 8793 transitions. [2022-07-22 20:45:36,658 INFO L78 Accepts]: Start accepts. Automaton has 5668 states and 8793 transitions. Word has length 167 [2022-07-22 20:45:36,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:45:36,659 INFO L495 AbstractCegarLoop]: Abstraction has 5668 states and 8793 transitions. [2022-07-22 20:45:36,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:45:36,659 INFO L276 IsEmpty]: Start isEmpty. Operand 5668 states and 8793 transitions. [2022-07-22 20:45:36,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-22 20:45:36,663 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:45:36,663 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:45:36,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-22 20:45:36,664 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:45:36,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:45:36,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1031449898, now seen corresponding path program 1 times [2022-07-22 20:45:36,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:45:36,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802259365] [2022-07-22 20:45:36,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:45:36,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:45:36,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:36,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:45:36,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:36,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:45:36,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:36,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 20:45:36,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:36,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 20:45:36,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:36,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 20:45:36,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:36,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:45:36,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:45:36,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802259365] [2022-07-22 20:45:36,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802259365] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:45:36,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:45:36,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:45:36,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195748203] [2022-07-22 20:45:36,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:45:36,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:45:36,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:45:36,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:45:36,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:45:36,791 INFO L87 Difference]: Start difference. First operand 5668 states and 8793 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:45:41,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:45:41,913 INFO L93 Difference]: Finished difference Result 22590 states and 35327 transitions. [2022-07-22 20:45:41,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 20:45:41,914 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-07-22 20:45:41,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:45:41,962 INFO L225 Difference]: With dead ends: 22590 [2022-07-22 20:45:41,963 INFO L226 Difference]: Without dead ends: 16942 [2022-07-22 20:45:41,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 20:45:41,980 INFO L413 NwaCegarLoop]: 1035 mSDtfsCounter, 1517 mSDsluCounter, 1734 mSDsCounter, 0 mSdLazyCounter, 3233 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1534 SdHoareTripleChecker+Valid, 2769 SdHoareTripleChecker+Invalid, 3318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 3233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-22 20:45:41,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1534 Valid, 2769 Invalid, 3318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 3233 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-22 20:45:41,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16942 states. [2022-07-22 20:45:43,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16942 to 10920. [2022-07-22 20:45:43,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10920 states, 10040 states have (on average 1.5360557768924303) internal successors, (15422), 10073 states have internal predecessors, (15422), 649 states have call successors, (649), 198 states have call predecessors, (649), 230 states have return successors, (924), 680 states have call predecessors, (924), 649 states have call successors, (924) [2022-07-22 20:45:43,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10920 states to 10920 states and 16995 transitions. [2022-07-22 20:45:43,061 INFO L78 Accepts]: Start accepts. Automaton has 10920 states and 16995 transitions. Word has length 167 [2022-07-22 20:45:43,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:45:43,061 INFO L495 AbstractCegarLoop]: Abstraction has 10920 states and 16995 transitions. [2022-07-22 20:45:43,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:45:43,062 INFO L276 IsEmpty]: Start isEmpty. Operand 10920 states and 16995 transitions. [2022-07-22 20:45:43,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-22 20:45:43,067 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:45:43,067 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:45:43,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-22 20:45:43,068 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:45:43,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:45:43,068 INFO L85 PathProgramCache]: Analyzing trace with hash -742630508, now seen corresponding path program 1 times [2022-07-22 20:45:43,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:45:43,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883450802] [2022-07-22 20:45:43,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:45:43,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:45:43,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:43,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:45:43,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:43,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:45:43,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:43,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 20:45:43,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:43,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 20:45:43,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:43,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 20:45:43,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:43,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:45:43,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:45:43,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883450802] [2022-07-22 20:45:43,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883450802] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:45:43,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:45:43,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:45:43,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681697335] [2022-07-22 20:45:43,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:45:43,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:45:43,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:45:43,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:45:43,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:45:43,182 INFO L87 Difference]: Start difference. First operand 10920 states and 16995 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:45:50,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:45:50,397 INFO L93 Difference]: Finished difference Result 43472 states and 68187 transitions. [2022-07-22 20:45:50,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 20:45:50,398 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-07-22 20:45:50,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:45:50,512 INFO L225 Difference]: With dead ends: 43472 [2022-07-22 20:45:50,513 INFO L226 Difference]: Without dead ends: 32572 [2022-07-22 20:45:50,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 20:45:50,556 INFO L413 NwaCegarLoop]: 859 mSDtfsCounter, 1783 mSDsluCounter, 1737 mSDsCounter, 0 mSdLazyCounter, 2722 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1813 SdHoareTripleChecker+Valid, 2596 SdHoareTripleChecker+Invalid, 2810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 2722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-22 20:45:50,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1813 Valid, 2596 Invalid, 2810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 2722 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-22 20:45:50,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32572 states. [2022-07-22 20:45:52,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32572 to 21481. [2022-07-22 20:45:52,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21481 states, 19785 states have (on average 1.5357088703563306) internal successors, (30384), 19850 states have internal predecessors, (30384), 1241 states have call successors, (1241), 390 states have call predecessors, (1241), 454 states have return successors, (2034), 1304 states have call predecessors, (2034), 1241 states have call successors, (2034) [2022-07-22 20:45:52,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21481 states to 21481 states and 33659 transitions. [2022-07-22 20:45:52,890 INFO L78 Accepts]: Start accepts. Automaton has 21481 states and 33659 transitions. Word has length 167 [2022-07-22 20:45:52,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:45:52,890 INFO L495 AbstractCegarLoop]: Abstraction has 21481 states and 33659 transitions. [2022-07-22 20:45:52,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:45:52,890 INFO L276 IsEmpty]: Start isEmpty. Operand 21481 states and 33659 transitions. [2022-07-22 20:45:52,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-22 20:45:52,901 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:45:52,901 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:45:52,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-22 20:45:52,902 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:45:52,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:45:52,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1287503082, now seen corresponding path program 1 times [2022-07-22 20:45:52,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:45:52,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969487507] [2022-07-22 20:45:52,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:45:52,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:45:52,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:52,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:45:52,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:52,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:45:52,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:53,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 20:45:53,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:53,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 20:45:53,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:53,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 20:45:53,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:45:53,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:45:53,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:45:53,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969487507] [2022-07-22 20:45:53,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969487507] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:45:53,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:45:53,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:45:53,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884673163] [2022-07-22 20:45:53,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:45:53,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:45:53,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:45:53,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:45:53,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:45:53,023 INFO L87 Difference]: Start difference. First operand 21481 states and 33659 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:46:05,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:46:05,008 INFO L93 Difference]: Finished difference Result 84847 states and 133953 transitions. [2022-07-22 20:46:05,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 20:46:05,009 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-07-22 20:46:05,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:46:05,334 INFO L225 Difference]: With dead ends: 84847 [2022-07-22 20:46:05,334 INFO L226 Difference]: Without dead ends: 63386 [2022-07-22 20:46:05,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 20:46:05,401 INFO L413 NwaCegarLoop]: 994 mSDtfsCounter, 1496 mSDsluCounter, 1737 mSDsCounter, 0 mSdLazyCounter, 3148 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 2731 SdHoareTripleChecker+Invalid, 3233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 3148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-22 20:46:05,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1513 Valid, 2731 Invalid, 3233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 3148 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-22 20:46:05,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63386 states. [2022-07-22 20:46:10,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63386 to 42570. [2022-07-22 20:46:10,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42570 states, 39274 states have (on average 1.5363344706421551) internal successors, (60338), 39403 states have internal predecessors, (60338), 2393 states have call successors, (2393), 774 states have call predecessors, (2393), 902 states have return successors, (4708), 2520 states have call predecessors, (4708), 2393 states have call successors, (4708) [2022-07-22 20:46:10,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42570 states to 42570 states and 67439 transitions. [2022-07-22 20:46:10,433 INFO L78 Accepts]: Start accepts. Automaton has 42570 states and 67439 transitions. Word has length 167 [2022-07-22 20:46:10,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:46:10,434 INFO L495 AbstractCegarLoop]: Abstraction has 42570 states and 67439 transitions. [2022-07-22 20:46:10,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:46:10,434 INFO L276 IsEmpty]: Start isEmpty. Operand 42570 states and 67439 transitions. [2022-07-22 20:46:10,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-22 20:46:10,452 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:46:10,452 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:46:10,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-22 20:46:10,452 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:46:10,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:46:10,453 INFO L85 PathProgramCache]: Analyzing trace with hash -612342956, now seen corresponding path program 1 times [2022-07-22 20:46:10,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:46:10,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013449632] [2022-07-22 20:46:10,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:46:10,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:46:10,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:46:10,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:46:10,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:46:10,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:46:10,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:46:10,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 20:46:10,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:46:10,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 20:46:10,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:46:10,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 20:46:10,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:46:10,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:46:10,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:46:10,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013449632] [2022-07-22 20:46:10,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013449632] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:46:10,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:46:10,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:46:10,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586491437] [2022-07-22 20:46:10,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:46:10,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:46:10,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:46:10,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:46:10,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:46:10,593 INFO L87 Difference]: Start difference. First operand 42570 states and 67439 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:46:31,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:46:31,804 INFO L93 Difference]: Finished difference Result 166414 states and 265543 transitions. [2022-07-22 20:46:31,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 20:46:31,805 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-07-22 20:46:31,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:46:32,177 INFO L225 Difference]: With dead ends: 166414 [2022-07-22 20:46:32,178 INFO L226 Difference]: Without dead ends: 123864 [2022-07-22 20:46:32,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 20:46:32,299 INFO L413 NwaCegarLoop]: 849 mSDtfsCounter, 1703 mSDsluCounter, 1737 mSDsCounter, 0 mSdLazyCounter, 2706 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1733 SdHoareTripleChecker+Valid, 2586 SdHoareTripleChecker+Invalid, 2794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 2706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-22 20:46:32,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1733 Valid, 2586 Invalid, 2794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 2706 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-22 20:46:32,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123864 states. [2022-07-22 20:46:42,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123864 to 84683. [2022-07-22 20:46:42,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84683 states, 78251 states have (on average 1.5374627800283702) internal successors, (120308), 78508 states have internal predecessors, (120308), 4633 states have call successors, (4633), 1542 states have call predecessors, (4633), 1798 states have return successors, (11450), 4888 states have call predecessors, (11450), 4633 states have call successors, (11450) [2022-07-22 20:46:42,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84683 states to 84683 states and 136391 transitions. [2022-07-22 20:46:42,647 INFO L78 Accepts]: Start accepts. Automaton has 84683 states and 136391 transitions. Word has length 167 [2022-07-22 20:46:42,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:46:42,647 INFO L495 AbstractCegarLoop]: Abstraction has 84683 states and 136391 transitions. [2022-07-22 20:46:42,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:46:42,648 INFO L276 IsEmpty]: Start isEmpty. Operand 84683 states and 136391 transitions. [2022-07-22 20:46:42,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-22 20:46:42,686 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:46:42,686 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:46:42,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-22 20:46:42,687 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:46:42,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:46:42,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1560394922, now seen corresponding path program 1 times [2022-07-22 20:46:42,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:46:42,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342957600] [2022-07-22 20:46:42,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:46:42,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:46:42,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:46:42,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:46:42,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:46:42,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:46:42,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:46:42,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 20:46:42,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:46:42,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-22 20:46:42,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:46:42,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 20:46:42,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:46:42,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:46:42,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:46:42,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342957600] [2022-07-22 20:46:42,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342957600] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:46:42,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:46:42,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:46:42,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584184297] [2022-07-22 20:46:42,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:46:42,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:46:42,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:46:42,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:46:42,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:46:42,821 INFO L87 Difference]: Start difference. First operand 84683 states and 136391 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:47:25,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:47:25,901 INFO L93 Difference]: Finished difference Result 327181 states and 530781 transitions. [2022-07-22 20:47:25,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 20:47:25,901 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-07-22 20:47:25,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:47:26,919 INFO L225 Difference]: With dead ends: 327181 [2022-07-22 20:47:26,920 INFO L226 Difference]: Without dead ends: 242518 [2022-07-22 20:47:27,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 20:47:27,150 INFO L413 NwaCegarLoop]: 842 mSDtfsCounter, 1666 mSDsluCounter, 1737 mSDsCounter, 0 mSdLazyCounter, 2695 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1696 SdHoareTripleChecker+Valid, 2579 SdHoareTripleChecker+Invalid, 2786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 2695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-22 20:47:27,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1696 Valid, 2579 Invalid, 2786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 2695 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-22 20:47:27,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242518 states.