./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label49+token_ring.13.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label49+token_ring.13.cil-1.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 21d4f13e72175539cc78aacb8d1d416269d0755bd0c7a4b3f37d9d8805a7ca70 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 19:07:06,104 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 19:07:06,105 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 19:07:06,162 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 19:07:06,162 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 19:07:06,163 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 19:07:06,164 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 19:07:06,165 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 19:07:06,166 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 19:07:06,166 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 19:07:06,167 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 19:07:06,168 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 19:07:06,168 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 19:07:06,169 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 19:07:06,170 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 19:07:06,170 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 19:07:06,171 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 19:07:06,172 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 19:07:06,173 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 19:07:06,174 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 19:07:06,175 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 19:07:06,176 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 19:07:06,177 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 19:07:06,178 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 19:07:06,179 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 19:07:06,180 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 19:07:06,180 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 19:07:06,181 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 19:07:06,181 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 19:07:06,182 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 19:07:06,182 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 19:07:06,182 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 19:07:06,183 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 19:07:06,184 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 19:07:06,184 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 19:07:06,185 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 19:07:06,185 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 19:07:06,185 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 19:07:06,185 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 19:07:06,186 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 19:07:06,187 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 19:07:06,187 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 19:07:06,201 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 19:07:06,201 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 19:07:06,202 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 19:07:06,202 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 19:07:06,202 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 19:07:06,202 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 19:07:06,203 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 19:07:06,203 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 19:07:06,203 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 19:07:06,203 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 19:07:06,204 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 19:07:06,204 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 19:07:06,204 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 19:07:06,204 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 19:07:06,204 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 19:07:06,204 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 19:07:06,204 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 19:07:06,205 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 19:07:06,205 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 19:07:06,205 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 19:07:06,205 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 19:07:06,205 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 19:07:06,205 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 19:07:06,206 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 19:07:06,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 19:07:06,206 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 19:07:06,206 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 19:07:06,206 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 19:07:06,206 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 19:07:06,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 19:07:06,207 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 19:07:06,207 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 19:07:06,207 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 19:07:06,207 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 19:07:06,207 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 21d4f13e72175539cc78aacb8d1d416269d0755bd0c7a4b3f37d9d8805a7ca70 [2021-12-17 19:07:06,396 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 19:07:06,417 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 19:07:06,429 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 19:07:06,430 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 19:07:06,431 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 19:07:06,432 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label49+token_ring.13.cil-1.c [2021-12-17 19:07:06,497 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e0dc0d96/aeb55b4040cb42e6abacaa23da6509a8/FLAG7fd2c90f0 [2021-12-17 19:07:07,177 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 19:07:07,177 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.13.cil-1.c [2021-12-17 19:07:07,230 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e0dc0d96/aeb55b4040cb42e6abacaa23da6509a8/FLAG7fd2c90f0 [2021-12-17 19:07:07,512 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e0dc0d96/aeb55b4040cb42e6abacaa23da6509a8 [2021-12-17 19:07:07,514 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 19:07:07,516 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 19:07:07,518 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 19:07:07,518 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 19:07:07,520 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 19:07:07,521 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 07:07:07" (1/1) ... [2021-12-17 19:07:07,522 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77ac882e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:07:07, skipping insertion in model container [2021-12-17 19:07:07,522 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 07:07:07" (1/1) ... [2021-12-17 19:07:07,527 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 19:07:07,684 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 19:07:08,862 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.13.cil-1.c[380593,380606] [2021-12-17 19:07:08,880 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.13.cil-1.c[383339,383352] [2021-12-17 19:07:09,099 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 19:07:09,106 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 19:07:09,691 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.13.cil-1.c[380593,380606] [2021-12-17 19:07:09,695 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.13.cil-1.c[383339,383352] [2021-12-17 19:07:09,710 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 19:07:09,750 INFO L208 MainTranslator]: Completed translation [2021-12-17 19:07:09,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:07:09 WrapperNode [2021-12-17 19:07:09,751 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 19:07:09,752 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 19:07:09,752 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 19:07:09,752 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 19:07:09,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:07:09" (1/1) ... [2021-12-17 19:07:09,843 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:07:09" (1/1) ... [2021-12-17 19:07:10,079 INFO L137 Inliner]: procedures = 70, calls = 81, calls flagged for inlining = 47, calls inlined = 47, statements flattened = 13262 [2021-12-17 19:07:10,080 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 19:07:10,080 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 19:07:10,080 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 19:07:10,081 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 19:07:10,086 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:07:09" (1/1) ... [2021-12-17 19:07:10,087 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:07:09" (1/1) ... [2021-12-17 19:07:10,190 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:07:09" (1/1) ... [2021-12-17 19:07:10,195 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:07:09" (1/1) ... [2021-12-17 19:07:10,379 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:07:09" (1/1) ... [2021-12-17 19:07:10,418 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:07:09" (1/1) ... [2021-12-17 19:07:10,444 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:07:09" (1/1) ... [2021-12-17 19:07:10,593 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 19:07:10,607 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 19:07:10,608 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 19:07:10,608 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 19:07:10,609 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:07:09" (1/1) ... [2021-12-17 19:07:10,615 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 19:07:10,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 19:07:10,652 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-17 19:07:10,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-17 19:07:10,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 19:07:10,697 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-17 19:07:10,697 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-17 19:07:10,697 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-17 19:07:10,697 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-17 19:07:10,697 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-17 19:07:10,697 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-17 19:07:10,698 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-12-17 19:07:10,698 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-12-17 19:07:10,698 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-17 19:07:10,698 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-17 19:07:10,698 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-17 19:07:10,698 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-17 19:07:10,698 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-17 19:07:10,698 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-17 19:07:10,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 19:07:10,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 19:07:10,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 19:07:10,843 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 19:07:10,844 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 19:07:15,486 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 19:07:15,513 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 19:07:15,513 INFO L301 CfgBuilder]: Removed 17 assume(true) statements. [2021-12-17 19:07:15,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 07:07:15 BoogieIcfgContainer [2021-12-17 19:07:15,517 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 19:07:15,518 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 19:07:15,518 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 19:07:15,520 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 19:07:15,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 07:07:07" (1/3) ... [2021-12-17 19:07:15,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d01ecbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 07:07:15, skipping insertion in model container [2021-12-17 19:07:15,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:07:09" (2/3) ... [2021-12-17 19:07:15,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d01ecbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 07:07:15, skipping insertion in model container [2021-12-17 19:07:15,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 07:07:15" (3/3) ... [2021-12-17 19:07:15,522 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.13.cil-1.c [2021-12-17 19:07:15,525 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 19:07:15,526 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-17 19:07:15,561 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 19:07:15,565 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 19:07:15,565 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-17 19:07:15,604 INFO L276 IsEmpty]: Start isEmpty. Operand has 2598 states, 2559 states have (on average 1.842125830402501) internal successors, (4714), 2564 states have internal predecessors, (4714), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2021-12-17 19:07:15,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 19:07:15,616 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:15,616 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:07:15,617 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:15,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:15,621 INFO L85 PathProgramCache]: Analyzing trace with hash -384467650, now seen corresponding path program 1 times [2021-12-17 19:07:15,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:15,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586534725] [2021-12-17 19:07:15,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:15,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:15,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:15,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:15,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:15,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:07:15,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:15,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:07:15,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:15,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:07:15,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:15,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:07:15,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:15,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:15,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:15,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586534725] [2021-12-17 19:07:15,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586534725] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:15,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:15,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 19:07:15,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730305490] [2021-12-17 19:07:15,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:15,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 19:07:15,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:15,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 19:07:15,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 19:07:15,962 INFO L87 Difference]: Start difference. First operand has 2598 states, 2559 states have (on average 1.842125830402501) internal successors, (4714), 2564 states have internal predecessors, (4714), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:17,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:17,482 INFO L93 Difference]: Finished difference Result 5340 states and 9793 transitions. [2021-12-17 19:07:17,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 19:07:17,485 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 19:07:17,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:17,504 INFO L225 Difference]: With dead ends: 5340 [2021-12-17 19:07:17,504 INFO L226 Difference]: Without dead ends: 2683 [2021-12-17 19:07:17,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-17 19:07:17,515 INFO L933 BasicCegarLoop]: 4741 mSDtfsCounter, 1121 mSDsluCounter, 12530 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1146 SdHoareTripleChecker+Valid, 17271 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:17,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1146 Valid, 17271 Invalid, 821 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [66 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-17 19:07:17,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2683 states. [2021-12-17 19:07:17,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2683 to 2530. [2021-12-17 19:07:17,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2530 states, 2493 states have (on average 1.824709185720016) internal successors, (4549), 2496 states have internal predecessors, (4549), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-17 19:07:17,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2530 states to 2530 states and 4605 transitions. [2021-12-17 19:07:17,618 INFO L78 Accepts]: Start accepts. Automaton has 2530 states and 4605 transitions. Word has length 190 [2021-12-17 19:07:17,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:07:17,618 INFO L470 AbstractCegarLoop]: Abstraction has 2530 states and 4605 transitions. [2021-12-17 19:07:17,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:17,619 INFO L276 IsEmpty]: Start isEmpty. Operand 2530 states and 4605 transitions. [2021-12-17 19:07:17,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 19:07:17,622 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:17,622 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:07:17,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 19:07:17,623 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:17,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:17,623 INFO L85 PathProgramCache]: Analyzing trace with hash 431579580, now seen corresponding path program 1 times [2021-12-17 19:07:17,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:17,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91329626] [2021-12-17 19:07:17,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:17,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:17,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:17,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:17,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:17,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:07:17,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:17,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:07:17,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:17,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:07:17,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:17,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:07:17,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:17,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:17,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:17,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91329626] [2021-12-17 19:07:17,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91329626] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:17,785 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:17,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 19:07:17,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786490993] [2021-12-17 19:07:17,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:17,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 19:07:17,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:17,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 19:07:17,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 19:07:17,787 INFO L87 Difference]: Start difference. First operand 2530 states and 4605 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:19,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:19,038 INFO L93 Difference]: Finished difference Result 3075 states and 5487 transitions. [2021-12-17 19:07:19,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 19:07:19,039 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 19:07:19,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:19,048 INFO L225 Difference]: With dead ends: 3075 [2021-12-17 19:07:19,049 INFO L226 Difference]: Without dead ends: 2683 [2021-12-17 19:07:19,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-17 19:07:19,052 INFO L933 BasicCegarLoop]: 4671 mSDtfsCounter, 1107 mSDsluCounter, 12327 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 16998 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:19,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1132 Valid, 16998 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 19:07:19,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2683 states. [2021-12-17 19:07:19,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2683 to 2530. [2021-12-17 19:07:19,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2530 states, 2493 states have (on average 1.8243080625752106) internal successors, (4548), 2496 states have internal predecessors, (4548), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-17 19:07:19,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2530 states to 2530 states and 4604 transitions. [2021-12-17 19:07:19,108 INFO L78 Accepts]: Start accepts. Automaton has 2530 states and 4604 transitions. Word has length 190 [2021-12-17 19:07:19,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:07:19,108 INFO L470 AbstractCegarLoop]: Abstraction has 2530 states and 4604 transitions. [2021-12-17 19:07:19,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:19,109 INFO L276 IsEmpty]: Start isEmpty. Operand 2530 states and 4604 transitions. [2021-12-17 19:07:19,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 19:07:19,111 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:19,111 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:07:19,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 19:07:19,111 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:19,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:19,112 INFO L85 PathProgramCache]: Analyzing trace with hash -217013190, now seen corresponding path program 1 times [2021-12-17 19:07:19,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:19,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389986355] [2021-12-17 19:07:19,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:19,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:19,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:19,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:19,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:19,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:07:19,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:19,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:07:19,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:19,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:07:19,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:19,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:07:19,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:19,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:19,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:19,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389986355] [2021-12-17 19:07:19,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389986355] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:19,278 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:19,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 19:07:19,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581175873] [2021-12-17 19:07:19,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:19,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 19:07:19,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:19,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 19:07:19,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 19:07:19,280 INFO L87 Difference]: Start difference. First operand 2530 states and 4604 transitions. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:20,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:20,887 INFO L93 Difference]: Finished difference Result 3070 states and 5479 transitions. [2021-12-17 19:07:20,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 19:07:20,888 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 19:07:20,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:20,897 INFO L225 Difference]: With dead ends: 3070 [2021-12-17 19:07:20,897 INFO L226 Difference]: Without dead ends: 2682 [2021-12-17 19:07:20,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-17 19:07:20,900 INFO L933 BasicCegarLoop]: 4625 mSDtfsCounter, 5056 mSDsluCounter, 12608 mSDsCounter, 0 mSdLazyCounter, 1419 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5077 SdHoareTripleChecker+Valid, 17233 SdHoareTripleChecker+Invalid, 1491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:20,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5077 Valid, 17233 Invalid, 1491 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [72 Valid, 1419 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-17 19:07:20,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2682 states. [2021-12-17 19:07:20,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2682 to 2530. [2021-12-17 19:07:20,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2530 states, 2493 states have (on average 1.823906939430405) internal successors, (4547), 2496 states have internal predecessors, (4547), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-17 19:07:20,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2530 states to 2530 states and 4603 transitions. [2021-12-17 19:07:20,954 INFO L78 Accepts]: Start accepts. Automaton has 2530 states and 4603 transitions. Word has length 190 [2021-12-17 19:07:20,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:07:20,954 INFO L470 AbstractCegarLoop]: Abstraction has 2530 states and 4603 transitions. [2021-12-17 19:07:20,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:20,954 INFO L276 IsEmpty]: Start isEmpty. Operand 2530 states and 4603 transitions. [2021-12-17 19:07:20,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 19:07:20,956 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:20,956 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:07:20,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 19:07:20,957 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:20,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:20,957 INFO L85 PathProgramCache]: Analyzing trace with hash 291765624, now seen corresponding path program 1 times [2021-12-17 19:07:20,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:20,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366221830] [2021-12-17 19:07:20,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:20,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:20,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:20,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:20,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:21,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:07:21,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:21,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:07:21,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:21,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:07:21,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:21,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:07:21,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:21,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:21,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:21,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366221830] [2021-12-17 19:07:21,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366221830] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:21,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:21,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:07:21,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25826837] [2021-12-17 19:07:21,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:21,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:07:21,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:21,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:07:21,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:07:21,086 INFO L87 Difference]: Start difference. First operand 2530 states and 4603 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:22,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:22,384 INFO L93 Difference]: Finished difference Result 3069 states and 5477 transitions. [2021-12-17 19:07:22,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 19:07:22,384 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 19:07:22,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:22,393 INFO L225 Difference]: With dead ends: 3069 [2021-12-17 19:07:22,394 INFO L226 Difference]: Without dead ends: 2681 [2021-12-17 19:07:22,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-17 19:07:22,397 INFO L933 BasicCegarLoop]: 4615 mSDtfsCounter, 5339 mSDsluCounter, 12687 mSDsCounter, 0 mSdLazyCounter, 1326 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5360 SdHoareTripleChecker+Valid, 17302 SdHoareTripleChecker+Invalid, 1433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:22,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5360 Valid, 17302 Invalid, 1433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1326 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 19:07:22,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2681 states. [2021-12-17 19:07:22,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2681 to 2530. [2021-12-17 19:07:22,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2530 states, 2493 states have (on average 1.8227035699959888) internal successors, (4544), 2496 states have internal predecessors, (4544), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-17 19:07:22,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2530 states to 2530 states and 4600 transitions. [2021-12-17 19:07:22,455 INFO L78 Accepts]: Start accepts. Automaton has 2530 states and 4600 transitions. Word has length 190 [2021-12-17 19:07:22,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:07:22,456 INFO L470 AbstractCegarLoop]: Abstraction has 2530 states and 4600 transitions. [2021-12-17 19:07:22,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:22,456 INFO L276 IsEmpty]: Start isEmpty. Operand 2530 states and 4600 transitions. [2021-12-17 19:07:22,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 19:07:22,458 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:22,458 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:07:22,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 19:07:22,458 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:22,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:22,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1984573188, now seen corresponding path program 1 times [2021-12-17 19:07:22,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:22,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496936553] [2021-12-17 19:07:22,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:22,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:22,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:22,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:22,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:22,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:07:22,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:22,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:07:22,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:22,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:07:22,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:22,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:07:22,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:22,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:22,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:22,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496936553] [2021-12-17 19:07:22,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496936553] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:22,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:22,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:07:22,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863136014] [2021-12-17 19:07:22,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:22,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:07:22,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:22,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:07:22,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:07:22,588 INFO L87 Difference]: Start difference. First operand 2530 states and 4600 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:24,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:24,067 INFO L93 Difference]: Finished difference Result 3095 states and 5519 transitions. [2021-12-17 19:07:24,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:07:24,068 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 19:07:24,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:24,077 INFO L225 Difference]: With dead ends: 3095 [2021-12-17 19:07:24,077 INFO L226 Difference]: Without dead ends: 2707 [2021-12-17 19:07:24,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 19:07:24,081 INFO L933 BasicCegarLoop]: 4662 mSDtfsCounter, 5333 mSDsluCounter, 12686 mSDsCounter, 0 mSdLazyCounter, 1427 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5354 SdHoareTripleChecker+Valid, 17348 SdHoareTripleChecker+Invalid, 1536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:24,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5354 Valid, 17348 Invalid, 1536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1427 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-17 19:07:24,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2707 states. [2021-12-17 19:07:24,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2707 to 2530. [2021-12-17 19:07:24,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2530 states, 2493 states have (on average 1.8223024468511833) internal successors, (4543), 2496 states have internal predecessors, (4543), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-17 19:07:24,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2530 states to 2530 states and 4599 transitions. [2021-12-17 19:07:24,141 INFO L78 Accepts]: Start accepts. Automaton has 2530 states and 4599 transitions. Word has length 190 [2021-12-17 19:07:24,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:07:24,141 INFO L470 AbstractCegarLoop]: Abstraction has 2530 states and 4599 transitions. [2021-12-17 19:07:24,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:24,142 INFO L276 IsEmpty]: Start isEmpty. Operand 2530 states and 4599 transitions. [2021-12-17 19:07:24,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 19:07:24,144 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:24,144 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:07:24,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 19:07:24,144 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:24,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:24,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1486016386, now seen corresponding path program 1 times [2021-12-17 19:07:24,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:24,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422505709] [2021-12-17 19:07:24,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:24,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:24,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:24,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:24,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:24,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:07:24,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:24,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:07:24,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:24,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:07:24,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:24,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:07:24,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:24,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:24,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:24,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422505709] [2021-12-17 19:07:24,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422505709] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:24,278 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:24,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:07:24,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906391168] [2021-12-17 19:07:24,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:24,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:07:24,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:24,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:07:24,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:07:24,280 INFO L87 Difference]: Start difference. First operand 2530 states and 4599 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:25,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:25,953 INFO L93 Difference]: Finished difference Result 3094 states and 5514 transitions. [2021-12-17 19:07:25,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:07:25,954 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 19:07:25,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:25,962 INFO L225 Difference]: With dead ends: 3094 [2021-12-17 19:07:25,963 INFO L226 Difference]: Without dead ends: 2706 [2021-12-17 19:07:25,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 19:07:25,965 INFO L933 BasicCegarLoop]: 4658 mSDtfsCounter, 5153 mSDsluCounter, 16859 mSDsCounter, 0 mSdLazyCounter, 1600 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5174 SdHoareTripleChecker+Valid, 21517 SdHoareTripleChecker+Invalid, 1680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:25,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5174 Valid, 21517 Invalid, 1680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1600 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-17 19:07:25,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2706 states. [2021-12-17 19:07:26,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2706 to 2530. [2021-12-17 19:07:26,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2530 states, 2493 states have (on average 1.821901323706378) internal successors, (4542), 2496 states have internal predecessors, (4542), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-12-17 19:07:26,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2530 states to 2530 states and 4598 transitions. [2021-12-17 19:07:26,027 INFO L78 Accepts]: Start accepts. Automaton has 2530 states and 4598 transitions. Word has length 190 [2021-12-17 19:07:26,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:07:26,027 INFO L470 AbstractCegarLoop]: Abstraction has 2530 states and 4598 transitions. [2021-12-17 19:07:26,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:26,028 INFO L276 IsEmpty]: Start isEmpty. Operand 2530 states and 4598 transitions. [2021-12-17 19:07:26,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 19:07:26,029 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:26,030 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:07:26,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 19:07:26,030 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:26,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:26,031 INFO L85 PathProgramCache]: Analyzing trace with hash -915744580, now seen corresponding path program 1 times [2021-12-17 19:07:26,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:26,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271085251] [2021-12-17 19:07:26,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:26,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:26,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:26,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:26,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:26,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:07:26,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:26,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:07:26,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:26,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:07:26,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:26,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:07:26,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:26,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:26,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:26,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271085251] [2021-12-17 19:07:26,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271085251] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:26,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:26,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 19:07:26,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630055057] [2021-12-17 19:07:26,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:26,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 19:07:26,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:26,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 19:07:26,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-17 19:07:26,176 INFO L87 Difference]: Start difference. First operand 2530 states and 4598 transitions. Second operand has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:29,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:29,451 INFO L93 Difference]: Finished difference Result 3654 states and 6411 transitions. [2021-12-17 19:07:29,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 19:07:29,451 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 19:07:29,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:29,461 INFO L225 Difference]: With dead ends: 3654 [2021-12-17 19:07:29,462 INFO L226 Difference]: Without dead ends: 3266 [2021-12-17 19:07:29,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-12-17 19:07:29,464 INFO L933 BasicCegarLoop]: 5038 mSDtfsCounter, 5809 mSDsluCounter, 22669 mSDsCounter, 0 mSdLazyCounter, 3367 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5830 SdHoareTripleChecker+Valid, 27707 SdHoareTripleChecker+Invalid, 3460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 3367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:29,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5830 Valid, 27707 Invalid, 3460 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [93 Valid, 3367 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-17 19:07:29,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3266 states. [2021-12-17 19:07:29,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3266 to 2936. [2021-12-17 19:07:29,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2869 states have (on average 1.7908678982223771) internal successors, (5138), 2873 states have internal predecessors, (5138), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 19:07:29,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5243 transitions. [2021-12-17 19:07:29,535 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5243 transitions. Word has length 190 [2021-12-17 19:07:29,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:07:29,536 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 5243 transitions. [2021-12-17 19:07:29,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:29,537 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5243 transitions. [2021-12-17 19:07:29,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 19:07:29,539 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:29,539 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:07:29,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 19:07:29,539 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:29,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:29,540 INFO L85 PathProgramCache]: Analyzing trace with hash 488124606, now seen corresponding path program 1 times [2021-12-17 19:07:29,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:29,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260428604] [2021-12-17 19:07:29,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:29,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:29,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:29,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:29,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:29,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:07:29,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:29,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:07:29,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:29,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:07:29,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:29,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:07:29,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:29,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:29,692 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:29,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260428604] [2021-12-17 19:07:29,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260428604] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:29,692 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:29,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:07:29,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395996698] [2021-12-17 19:07:29,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:29,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:07:29,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:29,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:07:29,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:07:29,694 INFO L87 Difference]: Start difference. First operand 2936 states and 5243 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:31,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:31,005 INFO L93 Difference]: Finished difference Result 4101 states and 7141 transitions. [2021-12-17 19:07:31,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:07:31,007 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 19:07:31,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:31,017 INFO L225 Difference]: With dead ends: 4101 [2021-12-17 19:07:31,017 INFO L226 Difference]: Without dead ends: 3307 [2021-12-17 19:07:31,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 19:07:31,021 INFO L933 BasicCegarLoop]: 4605 mSDtfsCounter, 5416 mSDsluCounter, 12684 mSDsCounter, 0 mSdLazyCounter, 1353 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5437 SdHoareTripleChecker+Valid, 17289 SdHoareTripleChecker+Invalid, 1467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:31,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5437 Valid, 17289 Invalid, 1467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1353 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 19:07:31,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3307 states. [2021-12-17 19:07:31,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3307 to 2936. [2021-12-17 19:07:31,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2869 states have (on average 1.7901707912164517) internal successors, (5136), 2873 states have internal predecessors, (5136), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 19:07:31,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5241 transitions. [2021-12-17 19:07:31,091 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5241 transitions. Word has length 190 [2021-12-17 19:07:31,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:07:31,091 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 5241 transitions. [2021-12-17 19:07:31,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:31,092 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5241 transitions. [2021-12-17 19:07:31,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 19:07:31,093 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:31,094 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:07:31,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 19:07:31,094 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:31,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:31,094 INFO L85 PathProgramCache]: Analyzing trace with hash -297873284, now seen corresponding path program 1 times [2021-12-17 19:07:31,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:31,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977920062] [2021-12-17 19:07:31,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:31,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:31,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:31,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:31,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:31,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:07:31,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:31,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:07:31,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:31,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:07:31,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:31,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:07:31,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:31,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:31,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:31,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977920062] [2021-12-17 19:07:31,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977920062] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:31,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:31,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:07:31,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987293680] [2021-12-17 19:07:31,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:31,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:07:31,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:31,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:07:31,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:07:31,229 INFO L87 Difference]: Start difference. First operand 2936 states and 5241 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:32,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:32,626 INFO L93 Difference]: Finished difference Result 4098 states and 7129 transitions. [2021-12-17 19:07:32,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:07:32,627 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 19:07:32,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:32,636 INFO L225 Difference]: With dead ends: 4098 [2021-12-17 19:07:32,636 INFO L226 Difference]: Without dead ends: 3304 [2021-12-17 19:07:32,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 19:07:32,639 INFO L933 BasicCegarLoop]: 4646 mSDtfsCounter, 5328 mSDsluCounter, 12686 mSDsCounter, 0 mSdLazyCounter, 1390 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5349 SdHoareTripleChecker+Valid, 17332 SdHoareTripleChecker+Invalid, 1502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:32,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5349 Valid, 17332 Invalid, 1502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1390 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 19:07:32,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3304 states. [2021-12-17 19:07:32,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3304 to 2936. [2021-12-17 19:07:32,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2869 states have (on average 1.7894736842105263) internal successors, (5134), 2873 states have internal predecessors, (5134), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 19:07:32,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5239 transitions. [2021-12-17 19:07:32,708 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5239 transitions. Word has length 190 [2021-12-17 19:07:32,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:07:32,709 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 5239 transitions. [2021-12-17 19:07:32,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:32,709 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5239 transitions. [2021-12-17 19:07:32,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 19:07:32,711 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:32,711 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:07:32,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 19:07:32,711 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:32,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:32,713 INFO L85 PathProgramCache]: Analyzing trace with hash 369508606, now seen corresponding path program 1 times [2021-12-17 19:07:32,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:32,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162843294] [2021-12-17 19:07:32,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:32,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:32,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:32,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:32,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:32,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:07:32,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:32,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:07:32,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:32,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:07:32,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:32,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:07:32,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:32,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:32,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:32,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162843294] [2021-12-17 19:07:32,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162843294] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:32,836 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:32,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:07:32,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740419505] [2021-12-17 19:07:32,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:32,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:07:32,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:32,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:07:32,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:07:32,838 INFO L87 Difference]: Start difference. First operand 2936 states and 5239 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:34,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:34,323 INFO L93 Difference]: Finished difference Result 4095 states and 7117 transitions. [2021-12-17 19:07:34,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:07:34,336 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 19:07:34,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:34,344 INFO L225 Difference]: With dead ends: 4095 [2021-12-17 19:07:34,344 INFO L226 Difference]: Without dead ends: 3301 [2021-12-17 19:07:34,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 19:07:34,351 INFO L933 BasicCegarLoop]: 4642 mSDtfsCounter, 5148 mSDsluCounter, 16859 mSDsCounter, 0 mSdLazyCounter, 1555 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5169 SdHoareTripleChecker+Valid, 21501 SdHoareTripleChecker+Invalid, 1638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:34,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5169 Valid, 21501 Invalid, 1638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1555 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-17 19:07:34,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3301 states. [2021-12-17 19:07:34,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3301 to 2936. [2021-12-17 19:07:34,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2869 states have (on average 1.788776577204601) internal successors, (5132), 2873 states have internal predecessors, (5132), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 19:07:34,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5237 transitions. [2021-12-17 19:07:34,424 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5237 transitions. Word has length 190 [2021-12-17 19:07:34,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:07:34,425 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 5237 transitions. [2021-12-17 19:07:34,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:34,425 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5237 transitions. [2021-12-17 19:07:34,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 19:07:34,426 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:34,426 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:07:34,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 19:07:34,427 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:34,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:34,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1825720260, now seen corresponding path program 1 times [2021-12-17 19:07:34,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:34,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238501465] [2021-12-17 19:07:34,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:34,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:34,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:34,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:34,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:34,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:07:34,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:34,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:07:34,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:34,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:07:34,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:34,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:07:34,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:34,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:34,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:34,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238501465] [2021-12-17 19:07:34,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238501465] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:34,570 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:34,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:07:34,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430364676] [2021-12-17 19:07:34,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:34,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:07:34,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:34,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:07:34,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:07:34,571 INFO L87 Difference]: Start difference. First operand 2936 states and 5237 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:35,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:35,870 INFO L93 Difference]: Finished difference Result 4092 states and 7105 transitions. [2021-12-17 19:07:35,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:07:35,871 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 19:07:35,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:35,878 INFO L225 Difference]: With dead ends: 4092 [2021-12-17 19:07:35,878 INFO L226 Difference]: Without dead ends: 3298 [2021-12-17 19:07:35,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 19:07:35,882 INFO L933 BasicCegarLoop]: 4636 mSDtfsCounter, 5327 mSDsluCounter, 12686 mSDsCounter, 0 mSdLazyCounter, 1367 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5348 SdHoareTripleChecker+Valid, 17322 SdHoareTripleChecker+Invalid, 1482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:35,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5348 Valid, 17322 Invalid, 1482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1367 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 19:07:35,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3298 states. [2021-12-17 19:07:35,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3298 to 2936. [2021-12-17 19:07:35,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2869 states have (on average 1.7880794701986755) internal successors, (5130), 2873 states have internal predecessors, (5130), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 19:07:35,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5235 transitions. [2021-12-17 19:07:35,967 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5235 transitions. Word has length 190 [2021-12-17 19:07:35,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:07:35,968 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 5235 transitions. [2021-12-17 19:07:35,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:35,968 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5235 transitions. [2021-12-17 19:07:35,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 19:07:35,970 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:35,970 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:07:35,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 19:07:35,971 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:35,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:35,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1480892098, now seen corresponding path program 1 times [2021-12-17 19:07:35,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:35,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199649973] [2021-12-17 19:07:35,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:35,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:35,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:35,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:36,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:36,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:07:36,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:36,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:07:36,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:36,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:07:36,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:36,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:07:36,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:36,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:36,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:36,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199649973] [2021-12-17 19:07:36,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199649973] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:36,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:36,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:07:36,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427174494] [2021-12-17 19:07:36,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:36,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:07:36,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:36,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:07:36,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:07:36,084 INFO L87 Difference]: Start difference. First operand 2936 states and 5235 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:37,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:37,569 INFO L93 Difference]: Finished difference Result 4086 states and 7087 transitions. [2021-12-17 19:07:37,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:07:37,570 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 19:07:37,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:37,577 INFO L225 Difference]: With dead ends: 4086 [2021-12-17 19:07:37,577 INFO L226 Difference]: Without dead ends: 3292 [2021-12-17 19:07:37,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 19:07:37,580 INFO L933 BasicCegarLoop]: 4630 mSDtfsCounter, 5145 mSDsluCounter, 16859 mSDsCounter, 0 mSdLazyCounter, 1522 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5166 SdHoareTripleChecker+Valid, 21489 SdHoareTripleChecker+Invalid, 1608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:37,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5166 Valid, 21489 Invalid, 1608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1522 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-17 19:07:37,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3292 states. [2021-12-17 19:07:37,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3292 to 2936. [2021-12-17 19:07:37,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2869 states have (on average 1.7873823631927501) internal successors, (5128), 2873 states have internal predecessors, (5128), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 19:07:37,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5233 transitions. [2021-12-17 19:07:37,643 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5233 transitions. Word has length 190 [2021-12-17 19:07:37,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:07:37,644 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 5233 transitions. [2021-12-17 19:07:37,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:37,644 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5233 transitions. [2021-12-17 19:07:37,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 19:07:37,646 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:37,646 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:07:37,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 19:07:37,646 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:37,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:37,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1044603584, now seen corresponding path program 1 times [2021-12-17 19:07:37,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:37,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967088447] [2021-12-17 19:07:37,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:37,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:37,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:37,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:37,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:37,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:07:37,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:37,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:07:37,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:37,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:07:37,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:37,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:07:37,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:37,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:37,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:37,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967088447] [2021-12-17 19:07:37,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967088447] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:37,753 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:37,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:07:37,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457766856] [2021-12-17 19:07:37,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:37,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:07:37,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:37,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:07:37,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:07:37,754 INFO L87 Difference]: Start difference. First operand 2936 states and 5233 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:39,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:39,297 INFO L93 Difference]: Finished difference Result 4083 states and 7075 transitions. [2021-12-17 19:07:39,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:07:39,298 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 19:07:39,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:39,304 INFO L225 Difference]: With dead ends: 4083 [2021-12-17 19:07:39,305 INFO L226 Difference]: Without dead ends: 3289 [2021-12-17 19:07:39,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 19:07:39,309 INFO L933 BasicCegarLoop]: 4626 mSDtfsCounter, 5143 mSDsluCounter, 16859 mSDsCounter, 0 mSdLazyCounter, 1510 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5164 SdHoareTripleChecker+Valid, 21485 SdHoareTripleChecker+Invalid, 1596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:39,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5164 Valid, 21485 Invalid, 1596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1510 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-17 19:07:39,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3289 states. [2021-12-17 19:07:39,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3289 to 2936. [2021-12-17 19:07:39,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2869 states have (on average 1.7866852561868247) internal successors, (5126), 2873 states have internal predecessors, (5126), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 19:07:39,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5231 transitions. [2021-12-17 19:07:39,379 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5231 transitions. Word has length 190 [2021-12-17 19:07:39,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:07:39,380 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 5231 transitions. [2021-12-17 19:07:39,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:39,380 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5231 transitions. [2021-12-17 19:07:39,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 19:07:39,382 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:39,382 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:07:39,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-17 19:07:39,382 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:39,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:39,383 INFO L85 PathProgramCache]: Analyzing trace with hash 433334526, now seen corresponding path program 1 times [2021-12-17 19:07:39,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:39,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173908600] [2021-12-17 19:07:39,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:39,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:39,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:39,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:39,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:39,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:07:39,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:39,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:07:39,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:39,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:07:39,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:39,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:07:39,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:39,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:39,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:39,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173908600] [2021-12-17 19:07:39,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173908600] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:39,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:39,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:07:39,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873886720] [2021-12-17 19:07:39,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:39,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:07:39,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:39,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:07:39,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:07:39,501 INFO L87 Difference]: Start difference. First operand 2936 states and 5231 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:40,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:40,983 INFO L93 Difference]: Finished difference Result 4080 states and 7063 transitions. [2021-12-17 19:07:40,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:07:40,984 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 19:07:40,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:40,989 INFO L225 Difference]: With dead ends: 4080 [2021-12-17 19:07:40,990 INFO L226 Difference]: Without dead ends: 3286 [2021-12-17 19:07:40,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 19:07:40,993 INFO L933 BasicCegarLoop]: 4622 mSDtfsCounter, 5141 mSDsluCounter, 16859 mSDsCounter, 0 mSdLazyCounter, 1498 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5162 SdHoareTripleChecker+Valid, 21481 SdHoareTripleChecker+Invalid, 1584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:40,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5162 Valid, 21481 Invalid, 1584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1498 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-17 19:07:40,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3286 states. [2021-12-17 19:07:41,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3286 to 2936. [2021-12-17 19:07:41,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2869 states have (on average 1.7859881491808993) internal successors, (5124), 2873 states have internal predecessors, (5124), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 19:07:41,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5229 transitions. [2021-12-17 19:07:41,059 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5229 transitions. Word has length 190 [2021-12-17 19:07:41,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:07:41,059 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 5229 transitions. [2021-12-17 19:07:41,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:41,059 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5229 transitions. [2021-12-17 19:07:41,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 19:07:41,061 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:41,061 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:07:41,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-17 19:07:41,061 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:41,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:41,062 INFO L85 PathProgramCache]: Analyzing trace with hash -971857152, now seen corresponding path program 1 times [2021-12-17 19:07:41,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:41,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879988639] [2021-12-17 19:07:41,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:41,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:41,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:41,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:41,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:41,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:07:41,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:41,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:07:41,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:41,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:07:41,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:41,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:07:41,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:41,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:41,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:41,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879988639] [2021-12-17 19:07:41,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879988639] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:41,167 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:41,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:07:41,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502271768] [2021-12-17 19:07:41,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:41,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:07:41,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:41,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:07:41,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:07:41,169 INFO L87 Difference]: Start difference. First operand 2936 states and 5229 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:42,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:42,420 INFO L93 Difference]: Finished difference Result 4077 states and 7051 transitions. [2021-12-17 19:07:42,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:07:42,421 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 19:07:42,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:42,427 INFO L225 Difference]: With dead ends: 4077 [2021-12-17 19:07:42,427 INFO L226 Difference]: Without dead ends: 3283 [2021-12-17 19:07:42,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 19:07:42,430 INFO L933 BasicCegarLoop]: 4589 mSDtfsCounter, 5369 mSDsluCounter, 12682 mSDsCounter, 0 mSdLazyCounter, 1294 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5390 SdHoareTripleChecker+Valid, 17271 SdHoareTripleChecker+Invalid, 1413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:42,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5390 Valid, 17271 Invalid, 1413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1294 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 19:07:42,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3283 states. [2021-12-17 19:07:42,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3283 to 2936. [2021-12-17 19:07:42,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2869 states have (on average 1.785291042174974) internal successors, (5122), 2873 states have internal predecessors, (5122), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 19:07:42,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5227 transitions. [2021-12-17 19:07:42,502 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5227 transitions. Word has length 190 [2021-12-17 19:07:42,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:07:42,502 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 5227 transitions. [2021-12-17 19:07:42,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:42,502 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5227 transitions. [2021-12-17 19:07:42,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 19:07:42,504 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:42,504 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:07:42,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-17 19:07:42,504 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:42,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:42,505 INFO L85 PathProgramCache]: Analyzing trace with hash 922476734, now seen corresponding path program 1 times [2021-12-17 19:07:42,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:42,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513078440] [2021-12-17 19:07:42,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:42,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:42,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:42,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:42,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:42,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:07:42,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:42,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:07:42,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:42,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:07:42,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:42,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:07:42,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:42,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:42,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:42,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513078440] [2021-12-17 19:07:42,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513078440] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:42,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:42,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:07:42,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510484232] [2021-12-17 19:07:42,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:42,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:07:42,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:42,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:07:42,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:07:42,623 INFO L87 Difference]: Start difference. First operand 2936 states and 5227 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:43,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:43,841 INFO L93 Difference]: Finished difference Result 4074 states and 7039 transitions. [2021-12-17 19:07:43,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:07:43,841 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 19:07:43,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:43,848 INFO L225 Difference]: With dead ends: 4074 [2021-12-17 19:07:43,848 INFO L226 Difference]: Without dead ends: 3280 [2021-12-17 19:07:43,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 19:07:43,852 INFO L933 BasicCegarLoop]: 4614 mSDtfsCounter, 5313 mSDsluCounter, 12684 mSDsCounter, 0 mSdLazyCounter, 1315 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5334 SdHoareTripleChecker+Valid, 17298 SdHoareTripleChecker+Invalid, 1432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:43,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5334 Valid, 17298 Invalid, 1432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1315 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 19:07:43,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3280 states. [2021-12-17 19:07:43,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3280 to 2936. [2021-12-17 19:07:43,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2869 states have (on average 1.7845939351690485) internal successors, (5120), 2873 states have internal predecessors, (5120), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 19:07:43,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5225 transitions. [2021-12-17 19:07:43,925 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5225 transitions. Word has length 190 [2021-12-17 19:07:43,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:07:43,925 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 5225 transitions. [2021-12-17 19:07:43,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:43,926 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5225 transitions. [2021-12-17 19:07:43,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 19:07:43,927 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:43,927 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:07:43,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-17 19:07:43,927 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:43,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:43,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1925909696, now seen corresponding path program 1 times [2021-12-17 19:07:43,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:43,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632365426] [2021-12-17 19:07:43,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:43,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:43,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:43,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:43,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:43,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:07:43,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:44,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:07:44,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:44,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:07:44,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:44,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:07:44,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:44,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:44,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:44,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632365426] [2021-12-17 19:07:44,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632365426] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:44,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:44,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:07:44,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162983305] [2021-12-17 19:07:44,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:44,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:07:44,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:44,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:07:44,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:07:44,034 INFO L87 Difference]: Start difference. First operand 2936 states and 5225 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:45,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:45,473 INFO L93 Difference]: Finished difference Result 4071 states and 7027 transitions. [2021-12-17 19:07:45,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:07:45,473 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 19:07:45,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:45,479 INFO L225 Difference]: With dead ends: 4071 [2021-12-17 19:07:45,479 INFO L226 Difference]: Without dead ends: 3277 [2021-12-17 19:07:45,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 19:07:45,482 INFO L933 BasicCegarLoop]: 4610 mSDtfsCounter, 5133 mSDsluCounter, 16857 mSDsCounter, 0 mSdLazyCounter, 1464 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5154 SdHoareTripleChecker+Valid, 21467 SdHoareTripleChecker+Invalid, 1552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:45,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5154 Valid, 21467 Invalid, 1552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1464 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 19:07:45,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3277 states. [2021-12-17 19:07:45,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3277 to 2936. [2021-12-17 19:07:45,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2869 states have (on average 1.7838968281631231) internal successors, (5118), 2873 states have internal predecessors, (5118), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 19:07:45,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5223 transitions. [2021-12-17 19:07:45,552 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5223 transitions. Word has length 190 [2021-12-17 19:07:45,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:07:45,552 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 5223 transitions. [2021-12-17 19:07:45,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:45,552 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5223 transitions. [2021-12-17 19:07:45,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 19:07:45,554 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:45,554 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:07:45,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-17 19:07:45,554 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:45,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:45,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1445890174, now seen corresponding path program 1 times [2021-12-17 19:07:45,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:45,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542694970] [2021-12-17 19:07:45,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:45,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:45,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:45,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:45,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:45,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:07:45,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:45,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:07:45,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:45,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:07:45,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:45,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:07:45,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:45,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:45,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:45,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542694970] [2021-12-17 19:07:45,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542694970] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:45,677 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:45,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:07:45,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237069951] [2021-12-17 19:07:45,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:45,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:07:45,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:45,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:07:45,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:07:45,678 INFO L87 Difference]: Start difference. First operand 2936 states and 5223 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:47,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:47,120 INFO L93 Difference]: Finished difference Result 4068 states and 7015 transitions. [2021-12-17 19:07:47,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:07:47,120 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 19:07:47,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:47,125 INFO L225 Difference]: With dead ends: 4068 [2021-12-17 19:07:47,125 INFO L226 Difference]: Without dead ends: 3274 [2021-12-17 19:07:47,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 19:07:47,128 INFO L933 BasicCegarLoop]: 4604 mSDtfsCounter, 5133 mSDsluCounter, 16857 mSDsCounter, 0 mSdLazyCounter, 1449 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5154 SdHoareTripleChecker+Valid, 21461 SdHoareTripleChecker+Invalid, 1540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:47,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5154 Valid, 21461 Invalid, 1540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1449 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 19:07:47,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3274 states. [2021-12-17 19:07:47,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3274 to 2936. [2021-12-17 19:07:47,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2869 states have (on average 1.7831997211571977) internal successors, (5116), 2873 states have internal predecessors, (5116), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 19:07:47,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5221 transitions. [2021-12-17 19:07:47,198 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5221 transitions. Word has length 190 [2021-12-17 19:07:47,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:07:47,198 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 5221 transitions. [2021-12-17 19:07:47,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:47,198 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5221 transitions. [2021-12-17 19:07:47,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 19:07:47,200 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:47,200 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:07:47,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-17 19:07:47,200 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:47,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:47,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1831752576, now seen corresponding path program 1 times [2021-12-17 19:07:47,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:47,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811958281] [2021-12-17 19:07:47,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:47,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:47,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:47,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:47,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:47,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:07:47,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:47,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:07:47,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:47,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:07:47,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:47,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:07:47,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:47,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:47,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:47,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811958281] [2021-12-17 19:07:47,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811958281] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:47,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:47,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:07:47,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603032515] [2021-12-17 19:07:47,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:47,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:07:47,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:47,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:07:47,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:07:47,318 INFO L87 Difference]: Start difference. First operand 2936 states and 5221 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:48,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:48,573 INFO L93 Difference]: Finished difference Result 4062 states and 6997 transitions. [2021-12-17 19:07:48,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:07:48,574 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 19:07:48,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:48,578 INFO L225 Difference]: With dead ends: 4062 [2021-12-17 19:07:48,578 INFO L226 Difference]: Without dead ends: 3268 [2021-12-17 19:07:48,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 19:07:48,580 INFO L933 BasicCegarLoop]: 4598 mSDtfsCounter, 5308 mSDsluCounter, 12684 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5329 SdHoareTripleChecker+Valid, 17282 SdHoareTripleChecker+Invalid, 1398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:48,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5329 Valid, 17282 Invalid, 1398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1278 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 19:07:48,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3268 states. [2021-12-17 19:07:48,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3268 to 2936. [2021-12-17 19:07:48,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2869 states have (on average 1.7825026141512723) internal successors, (5114), 2873 states have internal predecessors, (5114), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 19:07:48,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5219 transitions. [2021-12-17 19:07:48,653 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5219 transitions. Word has length 190 [2021-12-17 19:07:48,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:07:48,653 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 5219 transitions. [2021-12-17 19:07:48,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:48,654 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5219 transitions. [2021-12-17 19:07:48,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 19:07:48,655 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:48,655 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:07:48,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-17 19:07:48,656 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:48,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:48,656 INFO L85 PathProgramCache]: Analyzing trace with hash -532089086, now seen corresponding path program 1 times [2021-12-17 19:07:48,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:48,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785296930] [2021-12-17 19:07:48,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:48,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:48,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:48,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:48,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:48,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:07:48,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:48,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:07:48,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:48,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:07:48,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:48,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:07:48,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:48,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:48,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:48,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785296930] [2021-12-17 19:07:48,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785296930] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:48,771 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:48,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:07:48,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768316928] [2021-12-17 19:07:48,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:48,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:07:48,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:48,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:07:48,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:07:48,774 INFO L87 Difference]: Start difference. First operand 2936 states and 5219 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:50,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:50,275 INFO L93 Difference]: Finished difference Result 4059 states and 6985 transitions. [2021-12-17 19:07:50,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:07:50,276 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 19:07:50,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:50,280 INFO L225 Difference]: With dead ends: 4059 [2021-12-17 19:07:50,281 INFO L226 Difference]: Without dead ends: 3265 [2021-12-17 19:07:50,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 19:07:50,283 INFO L933 BasicCegarLoop]: 4594 mSDtfsCounter, 5128 mSDsluCounter, 16857 mSDsCounter, 0 mSdLazyCounter, 1419 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5149 SdHoareTripleChecker+Valid, 21451 SdHoareTripleChecker+Invalid, 1510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:50,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5149 Valid, 21451 Invalid, 1510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1419 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-17 19:07:50,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3265 states. [2021-12-17 19:07:50,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3265 to 2936. [2021-12-17 19:07:50,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2869 states have (on average 1.781805507145347) internal successors, (5112), 2873 states have internal predecessors, (5112), 52 states have call successors, (52), 13 states have call predecessors, (52), 13 states have return successors, (53), 51 states have call predecessors, (53), 50 states have call successors, (53) [2021-12-17 19:07:50,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 5217 transitions. [2021-12-17 19:07:50,358 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 5217 transitions. Word has length 190 [2021-12-17 19:07:50,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:07:50,358 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 5217 transitions. [2021-12-17 19:07:50,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:50,358 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 5217 transitions. [2021-12-17 19:07:50,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 19:07:50,361 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:50,361 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:07:50,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-17 19:07:50,361 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:50,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:50,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1855268032, now seen corresponding path program 1 times [2021-12-17 19:07:50,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:50,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886292643] [2021-12-17 19:07:50,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:50,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:50,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:50,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:50,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:50,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:07:50,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:50,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:07:50,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:50,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:07:50,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:50,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:07:50,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:50,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:50,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:50,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886292643] [2021-12-17 19:07:50,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886292643] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:50,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:50,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 19:07:50,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374368331] [2021-12-17 19:07:50,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:50,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 19:07:50,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:50,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 19:07:50,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-17 19:07:50,476 INFO L87 Difference]: Start difference. First operand 2936 states and 5217 transitions. Second operand has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:53,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:53,525 INFO L93 Difference]: Finished difference Result 5358 states and 9027 transitions. [2021-12-17 19:07:53,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 19:07:53,526 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 19:07:53,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:53,534 INFO L225 Difference]: With dead ends: 5358 [2021-12-17 19:07:53,534 INFO L226 Difference]: Without dead ends: 4564 [2021-12-17 19:07:53,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-12-17 19:07:53,536 INFO L933 BasicCegarLoop]: 4939 mSDtfsCounter, 5948 mSDsluCounter, 22653 mSDsCounter, 0 mSdLazyCounter, 2968 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5984 SdHoareTripleChecker+Valid, 27592 SdHoareTripleChecker+Invalid, 3074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:53,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5984 Valid, 27592 Invalid, 3074 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [106 Valid, 2968 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-17 19:07:53,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4564 states. [2021-12-17 19:07:53,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4564 to 3742. [2021-12-17 19:07:53,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3742 states, 3615 states have (on average 1.7336099585062241) internal successors, (6267), 3623 states have internal predecessors, (6267), 96 states have call successors, (96), 25 states have call predecessors, (96), 29 states have return successors, (109), 97 states have call predecessors, (109), 94 states have call successors, (109) [2021-12-17 19:07:53,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3742 states to 3742 states and 6472 transitions. [2021-12-17 19:07:53,673 INFO L78 Accepts]: Start accepts. Automaton has 3742 states and 6472 transitions. Word has length 190 [2021-12-17 19:07:53,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:07:53,673 INFO L470 AbstractCegarLoop]: Abstraction has 3742 states and 6472 transitions. [2021-12-17 19:07:53,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:53,674 INFO L276 IsEmpty]: Start isEmpty. Operand 3742 states and 6472 transitions. [2021-12-17 19:07:53,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 19:07:53,675 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:53,675 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:07:53,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-17 19:07:53,676 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:53,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:53,676 INFO L85 PathProgramCache]: Analyzing trace with hash 41711426, now seen corresponding path program 1 times [2021-12-17 19:07:53,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:53,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790463457] [2021-12-17 19:07:53,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:53,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:53,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:53,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:53,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:53,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:07:53,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:53,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:07:53,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:53,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:07:53,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:53,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:07:53,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:53,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:53,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:53,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790463457] [2021-12-17 19:07:53,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790463457] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:53,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:53,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:07:53,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346565354] [2021-12-17 19:07:53,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:53,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:07:53,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:53,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:07:53,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:07:53,803 INFO L87 Difference]: Start difference. First operand 3742 states and 6472 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:55,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:55,354 INFO L93 Difference]: Finished difference Result 6009 states and 10036 transitions. [2021-12-17 19:07:55,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:07:55,355 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 19:07:55,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:55,361 INFO L225 Difference]: With dead ends: 6009 [2021-12-17 19:07:55,361 INFO L226 Difference]: Without dead ends: 4409 [2021-12-17 19:07:55,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 19:07:55,364 INFO L933 BasicCegarLoop]: 4574 mSDtfsCounter, 5149 mSDsluCounter, 16855 mSDsCounter, 0 mSdLazyCounter, 1372 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5170 SdHoareTripleChecker+Valid, 21429 SdHoareTripleChecker+Invalid, 1465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:55,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5170 Valid, 21429 Invalid, 1465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1372 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 19:07:55,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4409 states. [2021-12-17 19:07:55,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4409 to 3742. [2021-12-17 19:07:55,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3742 states, 3615 states have (on average 1.7325034578146612) internal successors, (6263), 3623 states have internal predecessors, (6263), 96 states have call successors, (96), 25 states have call predecessors, (96), 29 states have return successors, (109), 97 states have call predecessors, (109), 94 states have call successors, (109) [2021-12-17 19:07:55,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3742 states to 3742 states and 6468 transitions. [2021-12-17 19:07:55,499 INFO L78 Accepts]: Start accepts. Automaton has 3742 states and 6468 transitions. Word has length 190 [2021-12-17 19:07:55,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:07:55,499 INFO L470 AbstractCegarLoop]: Abstraction has 3742 states and 6468 transitions. [2021-12-17 19:07:55,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:55,500 INFO L276 IsEmpty]: Start isEmpty. Operand 3742 states and 6468 transitions. [2021-12-17 19:07:55,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 19:07:55,501 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:55,501 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:07:55,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-17 19:07:55,502 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:55,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:55,502 INFO L85 PathProgramCache]: Analyzing trace with hash 379998976, now seen corresponding path program 1 times [2021-12-17 19:07:55,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:55,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644083001] [2021-12-17 19:07:55,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:55,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:55,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:55,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:55,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:55,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:07:55,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:55,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:07:55,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:55,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:07:55,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:55,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:07:55,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:55,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:55,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:55,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644083001] [2021-12-17 19:07:55,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644083001] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:55,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:55,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:07:55,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084134022] [2021-12-17 19:07:55,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:55,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:07:55,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:55,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:07:55,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:07:55,619 INFO L87 Difference]: Start difference. First operand 3742 states and 6468 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:57,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:57,095 INFO L93 Difference]: Finished difference Result 6000 states and 10006 transitions. [2021-12-17 19:07:57,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:07:57,095 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 19:07:57,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:57,102 INFO L225 Difference]: With dead ends: 6000 [2021-12-17 19:07:57,102 INFO L226 Difference]: Without dead ends: 4400 [2021-12-17 19:07:57,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 19:07:57,105 INFO L933 BasicCegarLoop]: 4583 mSDtfsCounter, 5125 mSDsluCounter, 16857 mSDsCounter, 0 mSdLazyCounter, 1388 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5146 SdHoareTripleChecker+Valid, 21440 SdHoareTripleChecker+Invalid, 1479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:57,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5146 Valid, 21440 Invalid, 1479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1388 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 19:07:57,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4400 states. [2021-12-17 19:07:57,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4400 to 3742. [2021-12-17 19:07:57,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3742 states, 3615 states have (on average 1.7313969571230983) internal successors, (6259), 3623 states have internal predecessors, (6259), 96 states have call successors, (96), 25 states have call predecessors, (96), 29 states have return successors, (109), 97 states have call predecessors, (109), 94 states have call successors, (109) [2021-12-17 19:07:57,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3742 states to 3742 states and 6464 transitions. [2021-12-17 19:07:57,235 INFO L78 Accepts]: Start accepts. Automaton has 3742 states and 6464 transitions. Word has length 190 [2021-12-17 19:07:57,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:07:57,235 INFO L470 AbstractCegarLoop]: Abstraction has 3742 states and 6464 transitions. [2021-12-17 19:07:57,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:57,235 INFO L276 IsEmpty]: Start isEmpty. Operand 3742 states and 6464 transitions. [2021-12-17 19:07:57,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 19:07:57,237 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:57,237 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:07:57,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-17 19:07:57,237 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:57,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:57,238 INFO L85 PathProgramCache]: Analyzing trace with hash 806553474, now seen corresponding path program 1 times [2021-12-17 19:07:57,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:57,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845808581] [2021-12-17 19:07:57,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:57,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:57,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:57,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:57,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:57,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:07:57,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:57,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:07:57,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:57,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:07:57,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:57,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:07:57,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:57,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:57,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:57,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845808581] [2021-12-17 19:07:57,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845808581] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:57,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:57,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:07:57,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520566625] [2021-12-17 19:07:57,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:57,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:07:57,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:57,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:07:57,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:07:57,335 INFO L87 Difference]: Start difference. First operand 3742 states and 6464 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:58,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:07:58,642 INFO L93 Difference]: Finished difference Result 5991 states and 9976 transitions. [2021-12-17 19:07:58,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:07:58,643 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 19:07:58,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:07:58,649 INFO L225 Difference]: With dead ends: 5991 [2021-12-17 19:07:58,649 INFO L226 Difference]: Without dead ends: 4391 [2021-12-17 19:07:58,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 19:07:58,652 INFO L933 BasicCegarLoop]: 4579 mSDtfsCounter, 5301 mSDsluCounter, 12684 mSDsCounter, 0 mSdLazyCounter, 1233 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5322 SdHoareTripleChecker+Valid, 17263 SdHoareTripleChecker+Invalid, 1353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 19:07:58,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5322 Valid, 17263 Invalid, 1353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1233 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 19:07:58,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4391 states. [2021-12-17 19:07:58,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4391 to 3742. [2021-12-17 19:07:58,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3742 states, 3615 states have (on average 1.7302904564315353) internal successors, (6255), 3623 states have internal predecessors, (6255), 96 states have call successors, (96), 25 states have call predecessors, (96), 29 states have return successors, (109), 97 states have call predecessors, (109), 94 states have call successors, (109) [2021-12-17 19:07:58,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3742 states to 3742 states and 6460 transitions. [2021-12-17 19:07:58,783 INFO L78 Accepts]: Start accepts. Automaton has 3742 states and 6460 transitions. Word has length 190 [2021-12-17 19:07:58,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:07:58,783 INFO L470 AbstractCegarLoop]: Abstraction has 3742 states and 6460 transitions. [2021-12-17 19:07:58,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:07:58,783 INFO L276 IsEmpty]: Start isEmpty. Operand 3742 states and 6460 transitions. [2021-12-17 19:07:58,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 19:07:58,785 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:07:58,785 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:07:58,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-17 19:07:58,785 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:07:58,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:07:58,786 INFO L85 PathProgramCache]: Analyzing trace with hash 266123968, now seen corresponding path program 1 times [2021-12-17 19:07:58,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:07:58,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315113424] [2021-12-17 19:07:58,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:07:58,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:07:58,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:58,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:07:58,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:58,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:07:58,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:58,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:07:58,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:58,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:07:58,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:58,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:07:58,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:07:58,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:07:58,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:07:58,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315113424] [2021-12-17 19:07:58,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315113424] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:07:58,891 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:07:58,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 19:07:58,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054093386] [2021-12-17 19:07:58,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:07:58,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 19:07:58,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:07:58,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 19:07:58,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 19:07:58,893 INFO L87 Difference]: Start difference. First operand 3742 states and 6460 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:08:00,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:08:00,165 INFO L93 Difference]: Finished difference Result 5982 states and 9946 transitions. [2021-12-17 19:08:00,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 19:08:00,166 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 19:08:00,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:08:00,172 INFO L225 Difference]: With dead ends: 5982 [2021-12-17 19:08:00,172 INFO L226 Difference]: Without dead ends: 4382 [2021-12-17 19:08:00,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 19:08:00,175 INFO L933 BasicCegarLoop]: 4573 mSDtfsCounter, 5302 mSDsluCounter, 12684 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5323 SdHoareTripleChecker+Valid, 17257 SdHoareTripleChecker+Invalid, 1343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 19:08:00,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5323 Valid, 17257 Invalid, 1343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1220 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 19:08:00,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4382 states. [2021-12-17 19:08:00,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4382 to 3742. [2021-12-17 19:08:00,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3742 states, 3615 states have (on average 1.7291839557399724) internal successors, (6251), 3623 states have internal predecessors, (6251), 96 states have call successors, (96), 25 states have call predecessors, (96), 29 states have return successors, (109), 97 states have call predecessors, (109), 94 states have call successors, (109) [2021-12-17 19:08:00,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3742 states to 3742 states and 6456 transitions. [2021-12-17 19:08:00,310 INFO L78 Accepts]: Start accepts. Automaton has 3742 states and 6456 transitions. Word has length 190 [2021-12-17 19:08:00,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:08:00,310 INFO L470 AbstractCegarLoop]: Abstraction has 3742 states and 6456 transitions. [2021-12-17 19:08:00,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:08:00,310 INFO L276 IsEmpty]: Start isEmpty. Operand 3742 states and 6456 transitions. [2021-12-17 19:08:00,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 19:08:00,312 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:08:00,312 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:08:00,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-17 19:08:00,312 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:08:00,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:08:00,313 INFO L85 PathProgramCache]: Analyzing trace with hash 110143426, now seen corresponding path program 1 times [2021-12-17 19:08:00,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:08:00,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454893469] [2021-12-17 19:08:00,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:08:00,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:08:00,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:00,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:08:00,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:00,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:08:00,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:00,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:08:00,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:00,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:08:00,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:00,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:08:00,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:00,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:08:00,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:08:00,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454893469] [2021-12-17 19:08:00,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454893469] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:08:00,424 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:08:00,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 19:08:00,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052104793] [2021-12-17 19:08:00,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:08:00,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 19:08:00,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:08:00,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 19:08:00,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-17 19:08:00,425 INFO L87 Difference]: Start difference. First operand 3742 states and 6456 transitions. Second operand has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:08:03,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:08:03,241 INFO L93 Difference]: Finished difference Result 8222 states and 13478 transitions. [2021-12-17 19:08:03,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 19:08:03,241 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 19:08:03,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:08:03,254 INFO L225 Difference]: With dead ends: 8222 [2021-12-17 19:08:03,254 INFO L226 Difference]: Without dead ends: 6622 [2021-12-17 19:08:03,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-12-17 19:08:03,259 INFO L933 BasicCegarLoop]: 4918 mSDtfsCounter, 6014 mSDsluCounter, 18293 mSDsCounter, 0 mSdLazyCounter, 2751 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6034 SdHoareTripleChecker+Valid, 23211 SdHoareTripleChecker+Invalid, 2885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 2751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-17 19:08:03,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6034 Valid, 23211 Invalid, 2885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 2751 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-17 19:08:03,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6622 states. [2021-12-17 19:08:03,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6622 to 5342. [2021-12-17 19:08:03,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5342 states, 5091 states have (on average 1.671380868198782) internal successors, (8509), 5113 states have internal predecessors, (8509), 182 states have call successors, (182), 49 states have call predecessors, (182), 67 states have return successors, (243), 187 states have call predecessors, (243), 180 states have call successors, (243) [2021-12-17 19:08:03,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5342 states to 5342 states and 8934 transitions. [2021-12-17 19:08:03,527 INFO L78 Accepts]: Start accepts. Automaton has 5342 states and 8934 transitions. Word has length 190 [2021-12-17 19:08:03,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:08:03,528 INFO L470 AbstractCegarLoop]: Abstraction has 5342 states and 8934 transitions. [2021-12-17 19:08:03,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 6 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:08:03,528 INFO L276 IsEmpty]: Start isEmpty. Operand 5342 states and 8934 transitions. [2021-12-17 19:08:03,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-17 19:08:03,530 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:08:03,530 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:08:03,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-17 19:08:03,530 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:08:03,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:08:03,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1677726396, now seen corresponding path program 1 times [2021-12-17 19:08:03,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:08:03,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074338346] [2021-12-17 19:08:03,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:08:03,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:08:03,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:03,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:08:03,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:03,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:08:03,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:03,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:08:03,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:03,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:08:03,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:03,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:08:03,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:03,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 19:08:03,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:08:03,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074338346] [2021-12-17 19:08:03,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074338346] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:08:03,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 19:08:03,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 19:08:03,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764429993] [2021-12-17 19:08:03,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:08:03,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 19:08:03,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:08:03,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 19:08:03,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 19:08:03,624 INFO L87 Difference]: Start difference. First operand 5342 states and 8934 transitions. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:08:06,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:08:06,682 INFO L93 Difference]: Finished difference Result 14087 states and 22564 transitions. [2021-12-17 19:08:06,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 19:08:06,682 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2021-12-17 19:08:06,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:08:06,703 INFO L225 Difference]: With dead ends: 14087 [2021-12-17 19:08:06,704 INFO L226 Difference]: Without dead ends: 10888 [2021-12-17 19:08:06,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-17 19:08:06,714 INFO L933 BasicCegarLoop]: 5231 mSDtfsCounter, 6000 mSDsluCounter, 13245 mSDsCounter, 0 mSdLazyCounter, 2421 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6046 SdHoareTripleChecker+Valid, 18476 SdHoareTripleChecker+Invalid, 2554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 2421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-17 19:08:06,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6046 Valid, 18476 Invalid, 2554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 2421 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-17 19:08:06,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10888 states. [2021-12-17 19:08:07,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10888 to 8464. [2021-12-17 19:08:07,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8464 states, 7970 states have (on average 1.6155583437892096) internal successors, (12876), 8019 states have internal predecessors, (12876), 358 states have call successors, (358), 97 states have call predecessors, (358), 134 states have return successors, (475), 355 states have call predecessors, (475), 356 states have call successors, (475) [2021-12-17 19:08:07,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8464 states to 8464 states and 13709 transitions. [2021-12-17 19:08:07,275 INFO L78 Accepts]: Start accepts. Automaton has 8464 states and 13709 transitions. Word has length 190 [2021-12-17 19:08:07,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:08:07,275 INFO L470 AbstractCegarLoop]: Abstraction has 8464 states and 13709 transitions. [2021-12-17 19:08:07,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 19:08:07,275 INFO L276 IsEmpty]: Start isEmpty. Operand 8464 states and 13709 transitions. [2021-12-17 19:08:07,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-12-17 19:08:07,284 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:08:07,284 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:08:07,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-17 19:08:07,284 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:08:07,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:08:07,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1020287586, now seen corresponding path program 1 times [2021-12-17 19:08:07,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:08:07,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443744338] [2021-12-17 19:08:07,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:08:07,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:08:07,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:07,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:08:07,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:07,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:08:07,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:07,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:08:07,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:07,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:08:07,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:07,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:08:07,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:07,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-17 19:08:07,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:07,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-17 19:08:07,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:07,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-12-17 19:08:07,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:07,418 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-17 19:08:07,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:08:07,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443744338] [2021-12-17 19:08:07,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443744338] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 19:08:07,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877528501] [2021-12-17 19:08:07,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:08:07,419 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 19:08:07,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 19:08:07,421 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) [2021-12-17 19:08:07,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-17 19:08:07,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:07,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 1333 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 19:08:07,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 19:08:07,961 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-12-17 19:08:07,961 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 19:08:07,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877528501] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:08:07,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 19:08:07,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-17 19:08:07,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911836641] [2021-12-17 19:08:07,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:08:07,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 19:08:07,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:08:07,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 19:08:07,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 19:08:07,963 INFO L87 Difference]: Start difference. First operand 8464 states and 13709 transitions. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 2 states have internal predecessors, (242), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 19:08:08,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:08:08,921 INFO L93 Difference]: Finished difference Result 21025 states and 33257 transitions. [2021-12-17 19:08:08,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 19:08:08,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 2 states have internal predecessors, (242), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 309 [2021-12-17 19:08:08,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:08:08,952 INFO L225 Difference]: With dead ends: 21025 [2021-12-17 19:08:08,952 INFO L226 Difference]: Without dead ends: 14704 [2021-12-17 19:08:08,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 19:08:08,969 INFO L933 BasicCegarLoop]: 4599 mSDtfsCounter, 4473 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4473 SdHoareTripleChecker+Valid, 5176 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 19:08:08,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4473 Valid, 5176 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 19:08:08,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14704 states. [2021-12-17 19:08:09,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14704 to 14668. [2021-12-17 19:08:09,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14668 states, 13704 states have (on average 1.5774956217162872) internal successors, (21618), 13799 states have internal predecessors, (21618), 694 states have call successors, (694), 193 states have call predecessors, (694), 268 states have return successors, (923), 683 states have call predecessors, (923), 692 states have call successors, (923) [2021-12-17 19:08:09,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14668 states to 14668 states and 23235 transitions. [2021-12-17 19:08:09,982 INFO L78 Accepts]: Start accepts. Automaton has 14668 states and 23235 transitions. Word has length 309 [2021-12-17 19:08:09,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:08:09,982 INFO L470 AbstractCegarLoop]: Abstraction has 14668 states and 23235 transitions. [2021-12-17 19:08:09,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 2 states have internal predecessors, (242), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 19:08:09,983 INFO L276 IsEmpty]: Start isEmpty. Operand 14668 states and 23235 transitions. [2021-12-17 19:08:09,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-12-17 19:08:09,998 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:08:09,999 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:08:10,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-17 19:08:10,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-12-17 19:08:10,216 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:08:10,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:08:10,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1774320002, now seen corresponding path program 1 times [2021-12-17 19:08:10,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:08:10,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546615957] [2021-12-17 19:08:10,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:08:10,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:08:10,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:10,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:08:10,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:10,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:08:10,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:10,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:08:10,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:10,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:08:10,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:10,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:08:10,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:10,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-17 19:08:10,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:10,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-17 19:08:10,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:10,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-12-17 19:08:10,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:10,384 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-17 19:08:10,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:08:10,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546615957] [2021-12-17 19:08:10,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546615957] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 19:08:10,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097360501] [2021-12-17 19:08:10,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:08:10,385 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 19:08:10,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 19:08:10,386 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) [2021-12-17 19:08:10,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-17 19:08:10,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:10,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 1327 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 19:08:10,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 19:08:10,983 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-17 19:08:10,984 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 19:08:10,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097360501] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:08:10,984 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 19:08:10,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-17 19:08:10,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157173846] [2021-12-17 19:08:10,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:08:10,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 19:08:10,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:08:10,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 19:08:10,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 19:08:10,985 INFO L87 Difference]: Start difference. First operand 14668 states and 23235 transitions. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 2 states have internal predecessors, (254), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 19:08:12,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:08:12,763 INFO L93 Difference]: Finished difference Result 39557 states and 61947 transitions. [2021-12-17 19:08:12,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 19:08:12,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 2 states have internal predecessors, (254), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 309 [2021-12-17 19:08:12,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:08:12,827 INFO L225 Difference]: With dead ends: 39557 [2021-12-17 19:08:12,827 INFO L226 Difference]: Without dead ends: 27032 [2021-12-17 19:08:12,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 19:08:12,854 INFO L933 BasicCegarLoop]: 4599 mSDtfsCounter, 4461 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4461 SdHoareTripleChecker+Valid, 5176 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 19:08:12,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4461 Valid, 5176 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 19:08:12,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27032 states. [2021-12-17 19:08:14,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27032 to 26964. [2021-12-17 19:08:14,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26964 states, 25076 states have (on average 1.5535970649226352) internal successors, (38958), 25263 states have internal predecessors, (38958), 1350 states have call successors, (1350), 385 states have call predecessors, (1350), 536 states have return successors, (1803), 1323 states have call predecessors, (1803), 1348 states have call successors, (1803) [2021-12-17 19:08:14,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26964 states to 26964 states and 42111 transitions. [2021-12-17 19:08:14,859 INFO L78 Accepts]: Start accepts. Automaton has 26964 states and 42111 transitions. Word has length 309 [2021-12-17 19:08:14,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:08:14,860 INFO L470 AbstractCegarLoop]: Abstraction has 26964 states and 42111 transitions. [2021-12-17 19:08:14,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 2 states have internal predecessors, (254), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 19:08:14,860 INFO L276 IsEmpty]: Start isEmpty. Operand 26964 states and 42111 transitions. [2021-12-17 19:08:14,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-12-17 19:08:14,886 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:08:14,887 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:08:14,906 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-17 19:08:15,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-12-17 19:08:15,089 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:08:15,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:08:15,090 INFO L85 PathProgramCache]: Analyzing trace with hash -170833758, now seen corresponding path program 1 times [2021-12-17 19:08:15,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:08:15,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560499910] [2021-12-17 19:08:15,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:08:15,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:08:15,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:15,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:08:15,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:15,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:08:15,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:15,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:08:15,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:15,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:08:15,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:15,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:08:15,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:15,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-17 19:08:15,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:15,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-17 19:08:15,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:15,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-12-17 19:08:15,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:15,260 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-17 19:08:15,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:08:15,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560499910] [2021-12-17 19:08:15,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560499910] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 19:08:15,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132598274] [2021-12-17 19:08:15,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:08:15,261 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 19:08:15,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 19:08:15,262 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) [2021-12-17 19:08:15,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-17 19:08:15,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:15,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 1321 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 19:08:15,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 19:08:15,754 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-12-17 19:08:15,754 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 19:08:15,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132598274] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:08:15,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 19:08:15,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-17 19:08:15,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347580228] [2021-12-17 19:08:15,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:08:15,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 19:08:15,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:08:15,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 19:08:15,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 19:08:15,756 INFO L87 Difference]: Start difference. First operand 26964 states and 42111 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 19:08:19,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:08:19,414 INFO L93 Difference]: Finished difference Result 76285 states and 118783 transitions. [2021-12-17 19:08:19,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 19:08:19,414 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 309 [2021-12-17 19:08:19,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:08:19,536 INFO L225 Difference]: With dead ends: 76285 [2021-12-17 19:08:19,536 INFO L226 Difference]: Without dead ends: 51464 [2021-12-17 19:08:19,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 19:08:19,587 INFO L933 BasicCegarLoop]: 4599 mSDtfsCounter, 4497 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4497 SdHoareTripleChecker+Valid, 5176 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 19:08:19,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4497 Valid, 5176 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 19:08:19,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51464 states. [2021-12-17 19:08:23,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51464 to 51332. [2021-12-17 19:08:23,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51332 states, 47628 states have (on average 1.5400604686318973) internal successors, (73350), 47999 states have internal predecessors, (73350), 2630 states have call successors, (2630), 769 states have call predecessors, (2630), 1072 states have return successors, (3531), 2571 states have call predecessors, (3531), 2628 states have call successors, (3531) [2021-12-17 19:08:23,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51332 states to 51332 states and 79511 transitions. [2021-12-17 19:08:23,979 INFO L78 Accepts]: Start accepts. Automaton has 51332 states and 79511 transitions. Word has length 309 [2021-12-17 19:08:23,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:08:23,980 INFO L470 AbstractCegarLoop]: Abstraction has 51332 states and 79511 transitions. [2021-12-17 19:08:23,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 19:08:23,980 INFO L276 IsEmpty]: Start isEmpty. Operand 51332 states and 79511 transitions. [2021-12-17 19:08:24,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-12-17 19:08:24,035 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:08:24,036 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:08:24,054 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-17 19:08:24,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 19:08:24,254 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:08:24,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:08:24,255 INFO L85 PathProgramCache]: Analyzing trace with hash 631211970, now seen corresponding path program 1 times [2021-12-17 19:08:24,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:08:24,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483606221] [2021-12-17 19:08:24,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:08:24,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:08:24,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:24,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:08:24,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:24,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:08:24,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:24,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:08:24,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:24,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:08:24,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:24,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:08:24,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:24,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-17 19:08:24,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:24,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-17 19:08:24,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:24,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-12-17 19:08:24,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:24,396 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-17 19:08:24,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:08:24,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483606221] [2021-12-17 19:08:24,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483606221] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 19:08:24,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599440449] [2021-12-17 19:08:24,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:08:24,396 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 19:08:24,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 19:08:24,397 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) [2021-12-17 19:08:24,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-17 19:08:24,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:24,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 1315 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 19:08:24,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 19:08:24,916 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-12-17 19:08:24,916 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 19:08:24,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599440449] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:08:24,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 19:08:24,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-17 19:08:24,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101789062] [2021-12-17 19:08:24,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:08:24,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 19:08:24,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:08:24,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 19:08:24,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 19:08:24,919 INFO L87 Difference]: Start difference. First operand 51332 states and 79511 transitions. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 2 states have internal predecessors, (230), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 19:08:32,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 19:08:32,514 INFO L93 Difference]: Finished difference Result 149069 states and 231367 transitions. [2021-12-17 19:08:32,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 19:08:32,514 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 2 states have internal predecessors, (230), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 309 [2021-12-17 19:08:32,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 19:08:32,768 INFO L225 Difference]: With dead ends: 149069 [2021-12-17 19:08:32,768 INFO L226 Difference]: Without dead ends: 99880 [2021-12-17 19:08:32,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 19:08:32,986 INFO L933 BasicCegarLoop]: 4599 mSDtfsCounter, 4485 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4485 SdHoareTripleChecker+Valid, 5176 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 19:08:32,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4485 Valid, 5176 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 19:08:33,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99880 states. [2021-12-17 19:08:40,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99880 to 99620. [2021-12-17 19:08:40,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99620 states, 92348 states have (on average 1.5328756443019882) internal successors, (141558), 93087 states have internal predecessors, (141558), 5126 states have call successors, (5126), 1537 states have call predecessors, (5126), 2144 states have return successors, (6923), 5003 states have call predecessors, (6923), 5124 states have call successors, (6923) [2021-12-17 19:08:41,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99620 states to 99620 states and 153607 transitions. [2021-12-17 19:08:41,269 INFO L78 Accepts]: Start accepts. Automaton has 99620 states and 153607 transitions. Word has length 309 [2021-12-17 19:08:41,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 19:08:41,269 INFO L470 AbstractCegarLoop]: Abstraction has 99620 states and 153607 transitions. [2021-12-17 19:08:41,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 2 states have internal predecessors, (230), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 19:08:41,269 INFO L276 IsEmpty]: Start isEmpty. Operand 99620 states and 153607 transitions. [2021-12-17 19:08:41,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-12-17 19:08:41,356 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 19:08:41,356 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 19:08:41,374 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-17 19:08:41,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 19:08:41,571 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 19:08:41,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 19:08:41,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1568966942, now seen corresponding path program 1 times [2021-12-17 19:08:41,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 19:08:41,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153407448] [2021-12-17 19:08:41,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:08:41,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 19:08:41,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:41,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 19:08:41,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:41,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 19:08:41,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:41,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 19:08:41,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:41,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 19:08:41,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:41,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-17 19:08:41,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:41,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-17 19:08:41,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:41,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-17 19:08:41,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:41,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-12-17 19:08:41,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:41,724 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-17 19:08:41,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 19:08:41,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153407448] [2021-12-17 19:08:41,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153407448] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 19:08:41,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497211127] [2021-12-17 19:08:41,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 19:08:41,724 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 19:08:41,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 19:08:41,725 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 19:08:41,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-17 19:08:41,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 19:08:41,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 1309 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 19:08:41,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 19:08:42,348 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-17 19:08:42,348 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 19:08:42,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497211127] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 19:08:42,348 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 19:08:42,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-17 19:08:42,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527298707] [2021-12-17 19:08:42,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 19:08:42,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 19:08:42,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 19:08:42,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 19:08:42,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 19:08:42,350 INFO L87 Difference]: Start difference. First operand 99620 states and 153607 transitions. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 2 states have internal predecessors, (212), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)